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/sanfoundry_27_true-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:16:39,304 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:16:39,306 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:16:39,324 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:16:39,324 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:16:39,326 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:16:39,328 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:16:39,330 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:16:39,332 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:16:39,333 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:16:39,334 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:16:39,334 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:16:39,343 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:16:39,344 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:16:39,345 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:16:39,349 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:16:39,350 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:16:39,355 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:16:39,357 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:16:39,361 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:16:39,364 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:16:39,365 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:16:39,368 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:16:39,369 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:16:39,369 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:16:39,370 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:16:39,370 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:16:39,371 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:16:39,371 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:16:39,372 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:16:39,373 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:16:39,373 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:16:39,374 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:16:39,375 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:16:39,375 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:16:39,375 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:16:39,376 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:16:39,376 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:16:39,377 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:16:39,377 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:16:39,401 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:16:39,402 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:16:39,403 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:16:39,403 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:16:39,403 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:16:39,404 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:16:39,404 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:16:39,404 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:16:39,404 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:16:39,404 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:16:39,405 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:16:39,405 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:16:39,405 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:16:39,405 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:16:39,405 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:16:39,406 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:16:39,406 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:16:39,406 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:16:39,406 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:16:39,406 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:16:39,407 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:16:39,407 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:16:39,407 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:16:39,407 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:16:39,408 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:16:39,408 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:16:39,408 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:16:39,408 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:16:39,408 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 11:16:39,444 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:16:39,458 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:16:39,464 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:16:39,466 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:16:39,466 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:16:39,467 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/sanfoundry_27_true-unreach-call_ground.i [2019-05-23 11:16:39,536 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b98597d09/20759013f3d1459b92bdf3a2f0e54c99/FLAG1733f1113 [2019-05-23 11:16:39,929 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:16:39,930 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/sanfoundry_27_true-unreach-call_ground.i [2019-05-23 11:16:39,935 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b98597d09/20759013f3d1459b92bdf3a2f0e54c99/FLAG1733f1113 [2019-05-23 11:16:40,318 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b98597d09/20759013f3d1459b92bdf3a2f0e54c99 [2019-05-23 11:16:40,328 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:16:40,330 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:16:40,331 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:16:40,331 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:16:40,334 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:16:40,335 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:16:40" (1/1) ... [2019-05-23 11:16:40,338 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e57fb10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:40, skipping insertion in model container [2019-05-23 11:16:40,338 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:16:40" (1/1) ... [2019-05-23 11:16:40,346 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:16:40,372 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:16:40,596 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:16:40,603 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:16:40,627 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:16:40,645 INFO L146 ILogger]: Completed translation [2019-05-23 11:16:40,645 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:40 WrapperNode [2019-05-23 11:16:40,646 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:16:40,646 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:16:40,646 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:16:40,647 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:16:40,654 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:40" (1/1) ... [2019-05-23 11:16:40,664 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:40" (1/1) ... [2019-05-23 11:16:40,681 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:16:40,682 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:16:40,682 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:16:40,682 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:16:40,690 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:40" (1/1) ... [2019-05-23 11:16:40,690 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:40" (1/1) ... [2019-05-23 11:16:40,692 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:40" (1/1) ... [2019-05-23 11:16:40,692 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:40" (1/1) ... [2019-05-23 11:16:40,698 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:40" (1/1) ... [2019-05-23 11:16:40,789 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:40" (1/1) ... [2019-05-23 11:16:40,791 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:40" (1/1) ... [2019-05-23 11:16:40,792 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:16:40,793 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:16:40,793 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:16:40,793 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:16:40,794 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:40" (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 11:16:40,851 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:16:40,851 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:16:40,851 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:16:40,851 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:16:40,852 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:16:41,237 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:16:41,237 INFO L146 ILogger]: Removed 8 assume(true) statements. [2019-05-23 11:16:41,239 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:16:41 BoogieIcfgContainer [2019-05-23 11:16:41,239 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:16:41,240 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:16:41,240 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:16:41,243 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:16:41,243 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:16:40" (1/3) ... [2019-05-23 11:16:41,244 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fb38f32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:16:41, skipping insertion in model container [2019-05-23 11:16:41,244 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:40" (2/3) ... [2019-05-23 11:16:41,245 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fb38f32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:16:41, skipping insertion in model container [2019-05-23 11:16:41,245 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:16:41" (3/3) ... [2019-05-23 11:16:41,247 INFO L146 ILogger]: Analyzing ICFG sanfoundry_27_true-unreach-call_ground.i [2019-05-23 11:16:41,256 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:16:41,265 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:16:41,281 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:16:41,314 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:16:41,315 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:16:41,315 INFO L146 ILogger]: Hoare is true [2019-05-23 11:16:41,316 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:16:41,316 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:16:41,316 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:16:41,316 INFO L146 ILogger]: Difference is false [2019-05-23 11:16:41,316 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:16:41,316 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:16:41,332 INFO L146 ILogger]: Start isEmpty. Operand 41 states. [2019-05-23 11:16:41,341 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 21 [2019-05-23 11:16:41,341 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:41,343 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] [2019-05-23 11:16:41,345 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:41,350 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:41,351 INFO L146 ILogger]: Analyzing trace with hash -1758827129, now seen corresponding path program 1 times [2019-05-23 11:16:41,353 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:41,354 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:41,392 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:41,392 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:41,392 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:41,430 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:41,505 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 11:16:41,507 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:16:41,507 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:16:41,510 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:16:41,523 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:16:41,524 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:16:41,526 INFO L146 ILogger]: Start difference. First operand 41 states. Second operand 3 states. [2019-05-23 11:16:41,594 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:41,595 INFO L146 ILogger]: Finished difference Result 71 states and 81 transitions. [2019-05-23 11:16:41,595 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:16:41,597 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 20 [2019-05-23 11:16:41,597 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:41,606 INFO L146 ILogger]: With dead ends: 71 [2019-05-23 11:16:41,606 INFO L146 ILogger]: Without dead ends: 45 [2019-05-23 11:16:41,609 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 11:16:41,624 INFO L146 ILogger]: Start minimizeSevpa. Operand 45 states. [2019-05-23 11:16:41,639 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 45 to 36. [2019-05-23 11:16:41,640 INFO L146 ILogger]: Start removeUnreachable. Operand 36 states. [2019-05-23 11:16:41,641 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2019-05-23 11:16:41,643 INFO L146 ILogger]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 20 [2019-05-23 11:16:41,644 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:41,644 INFO L146 ILogger]: Abstraction has 36 states and 38 transitions. [2019-05-23 11:16:41,644 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:16:41,644 INFO L146 ILogger]: Start isEmpty. Operand 36 states and 38 transitions. [2019-05-23 11:16:41,645 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 28 [2019-05-23 11:16:41,645 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:41,646 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] [2019-05-23 11:16:41,646 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:41,646 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:41,647 INFO L146 ILogger]: Analyzing trace with hash 1458648409, now seen corresponding path program 1 times [2019-05-23 11:16:41,647 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:41,647 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:41,648 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:41,648 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:41,649 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:41,668 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:41,771 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:41,772 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:41,772 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 11:16:41,792 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:41,833 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:41,836 INFO L146 ILogger]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:16:41,845 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:41,934 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:41,956 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:41,956 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:16:41,957 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:16:41,957 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:16:41,958 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:16:41,958 INFO L146 ILogger]: Start difference. First operand 36 states and 38 transitions. Second operand 7 states. [2019-05-23 11:16:42,332 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:42,332 INFO L146 ILogger]: Finished difference Result 70 states and 75 transitions. [2019-05-23 11:16:42,332 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:16:42,333 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 27 [2019-05-23 11:16:42,333 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:42,334 INFO L146 ILogger]: With dead ends: 70 [2019-05-23 11:16:42,334 INFO L146 ILogger]: Without dead ends: 56 [2019-05-23 11:16:42,337 INFO L146 ILogger]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:16:42,338 INFO L146 ILogger]: Start minimizeSevpa. Operand 56 states. [2019-05-23 11:16:42,348 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 56 to 47. [2019-05-23 11:16:42,348 INFO L146 ILogger]: Start removeUnreachable. Operand 47 states. [2019-05-23 11:16:42,349 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2019-05-23 11:16:42,350 INFO L146 ILogger]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 27 [2019-05-23 11:16:42,350 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:42,350 INFO L146 ILogger]: Abstraction has 47 states and 50 transitions. [2019-05-23 11:16:42,351 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:16:42,352 INFO L146 ILogger]: Start isEmpty. Operand 47 states and 50 transitions. [2019-05-23 11:16:42,353 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 35 [2019-05-23 11:16:42,354 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:42,354 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:16:42,354 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:42,355 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:42,355 INFO L146 ILogger]: Analyzing trace with hash -1392288441, now seen corresponding path program 2 times [2019-05-23 11:16:42,356 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:42,356 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:42,357 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:42,358 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:42,358 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:42,382 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:42,518 INFO L146 ILogger]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:42,519 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:42,519 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 11:16:42,536 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:16:42,553 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-05-23 11:16:42,554 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:42,555 INFO L146 ILogger]: Trace formula consists of 40 conjuncts, 13 conjunts are in the unsatisfiable core [2019-05-23 11:16:42,557 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:42,808 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:16:42,809 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:16:42,826 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:16:42,826 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:16:42,827 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-05-23 11:16:42,934 INFO L146 ILogger]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-05-23 11:16:42,962 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:16:42,962 INFO L146 ILogger]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2019-05-23 11:16:42,963 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:16:42,963 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:16:42,966 INFO L146 ILogger]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:16:42,966 INFO L146 ILogger]: Start difference. First operand 47 states and 50 transitions. Second operand 14 states. [2019-05-23 11:16:43,226 WARN L146 ILogger]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2019-05-23 11:16:44,700 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:44,700 INFO L146 ILogger]: Finished difference Result 141 states and 153 transitions. [2019-05-23 11:16:44,701 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:16:44,701 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 34 [2019-05-23 11:16:44,701 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:44,703 INFO L146 ILogger]: With dead ends: 141 [2019-05-23 11:16:44,703 INFO L146 ILogger]: Without dead ends: 127 [2019-05-23 11:16:44,705 INFO L146 ILogger]: 0 DeclaredPredicates, 61 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=233, Invalid=957, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:16:44,706 INFO L146 ILogger]: Start minimizeSevpa. Operand 127 states. [2019-05-23 11:16:44,713 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 127 to 84. [2019-05-23 11:16:44,714 INFO L146 ILogger]: Start removeUnreachable. Operand 84 states. [2019-05-23 11:16:44,715 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 84 states to 84 states and 91 transitions. [2019-05-23 11:16:44,715 INFO L146 ILogger]: Start accepts. Automaton has 84 states and 91 transitions. Word has length 34 [2019-05-23 11:16:44,716 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:44,716 INFO L146 ILogger]: Abstraction has 84 states and 91 transitions. [2019-05-23 11:16:44,716 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:16:44,716 INFO L146 ILogger]: Start isEmpty. Operand 84 states and 91 transitions. [2019-05-23 11:16:44,717 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 45 [2019-05-23 11:16:44,717 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:44,718 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 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] [2019-05-23 11:16:44,718 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:44,718 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:44,718 INFO L146 ILogger]: Analyzing trace with hash -701188464, now seen corresponding path program 1 times [2019-05-23 11:16:44,719 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:44,719 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:44,720 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:44,720 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:44,720 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:44,735 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:44,839 INFO L146 ILogger]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:44,840 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:44,840 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 11:16:44,852 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:44,870 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:44,871 INFO L146 ILogger]: Trace formula consists of 75 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:16:44,873 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:44,940 INFO L146 ILogger]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:44,972 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:44,973 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2019-05-23 11:16:44,973 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:16:44,973 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:16:44,974 INFO L146 ILogger]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:16:44,974 INFO L146 ILogger]: Start difference. First operand 84 states and 91 transitions. Second operand 11 states. [2019-05-23 11:16:45,133 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:45,133 INFO L146 ILogger]: Finished difference Result 138 states and 151 transitions. [2019-05-23 11:16:45,133 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:16:45,133 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 44 [2019-05-23 11:16:45,134 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:45,135 INFO L146 ILogger]: With dead ends: 138 [2019-05-23 11:16:45,135 INFO L146 ILogger]: Without dead ends: 116 [2019-05-23 11:16:45,136 INFO L146 ILogger]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:16:45,137 INFO L146 ILogger]: Start minimizeSevpa. Operand 116 states. [2019-05-23 11:16:45,145 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 116 to 102. [2019-05-23 11:16:45,145 INFO L146 ILogger]: Start removeUnreachable. Operand 102 states. [2019-05-23 11:16:45,146 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 102 states to 102 states and 111 transitions. [2019-05-23 11:16:45,147 INFO L146 ILogger]: Start accepts. Automaton has 102 states and 111 transitions. Word has length 44 [2019-05-23 11:16:45,147 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:45,147 INFO L146 ILogger]: Abstraction has 102 states and 111 transitions. [2019-05-23 11:16:45,147 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:16:45,147 INFO L146 ILogger]: Start isEmpty. Operand 102 states and 111 transitions. [2019-05-23 11:16:45,149 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 52 [2019-05-23 11:16:45,149 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:45,149 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 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] [2019-05-23 11:16:45,150 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:45,150 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:45,150 INFO L146 ILogger]: Analyzing trace with hash -715300816, now seen corresponding path program 2 times [2019-05-23 11:16:45,150 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:45,150 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:45,151 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:45,152 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:45,152 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:45,167 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:45,390 INFO L146 ILogger]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:45,390 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:45,390 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 11:16:45,407 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:16:45,451 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:16:45,451 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:45,452 INFO L146 ILogger]: Trace formula consists of 85 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:16:45,454 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:45,505 INFO L146 ILogger]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:45,530 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:45,531 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2019-05-23 11:16:45,531 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:16:45,531 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:16:45,532 INFO L146 ILogger]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:16:45,532 INFO L146 ILogger]: Start difference. First operand 102 states and 111 transitions. Second operand 13 states. [2019-05-23 11:16:45,747 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:45,748 INFO L146 ILogger]: Finished difference Result 156 states and 171 transitions. [2019-05-23 11:16:45,753 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:16:45,753 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 51 [2019-05-23 11:16:45,753 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:45,754 INFO L146 ILogger]: With dead ends: 156 [2019-05-23 11:16:45,754 INFO L146 ILogger]: Without dead ends: 134 [2019-05-23 11:16:45,755 INFO L146 ILogger]: 0 DeclaredPredicates, 69 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:16:45,756 INFO L146 ILogger]: Start minimizeSevpa. Operand 134 states. [2019-05-23 11:16:45,763 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 134 to 120. [2019-05-23 11:16:45,763 INFO L146 ILogger]: Start removeUnreachable. Operand 120 states. [2019-05-23 11:16:45,765 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 120 states to 120 states and 131 transitions. [2019-05-23 11:16:45,765 INFO L146 ILogger]: Start accepts. Automaton has 120 states and 131 transitions. Word has length 51 [2019-05-23 11:16:45,765 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:45,766 INFO L146 ILogger]: Abstraction has 120 states and 131 transitions. [2019-05-23 11:16:45,766 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:16:45,766 INFO L146 ILogger]: Start isEmpty. Operand 120 states and 131 transitions. [2019-05-23 11:16:45,767 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 59 [2019-05-23 11:16:45,767 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:45,767 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 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] [2019-05-23 11:16:45,768 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:45,768 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:45,768 INFO L146 ILogger]: Analyzing trace with hash -1936678256, now seen corresponding path program 3 times [2019-05-23 11:16:45,768 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:45,769 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:45,769 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:45,770 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:45,770 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:45,785 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:45,917 INFO L146 ILogger]: Checked inductivity of 71 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:45,917 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:45,918 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 11:16:45,928 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:16:45,999 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:16:45,999 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:46,000 INFO L146 ILogger]: Trace formula consists of 75 conjuncts, 17 conjunts are in the unsatisfiable core [2019-05-23 11:16:46,003 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:46,567 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:16:46,568 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 22 [2019-05-23 11:16:46,570 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:16:46,621 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:16:46,622 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:16:46,623 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:32, output treesize:5 [2019-05-23 11:16:46,733 INFO L146 ILogger]: Checked inductivity of 71 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2019-05-23 11:16:46,753 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:46,753 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2019-05-23 11:16:46,754 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:16:46,754 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:16:46,754 INFO L146 ILogger]: CoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:16:46,755 INFO L146 ILogger]: Start difference. First operand 120 states and 131 transitions. Second operand 24 states. [2019-05-23 11:16:51,427 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:51,428 INFO L146 ILogger]: Finished difference Result 230 states and 248 transitions. [2019-05-23 11:16:51,428 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2019-05-23 11:16:51,428 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 58 [2019-05-23 11:16:51,429 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:51,432 INFO L146 ILogger]: With dead ends: 230 [2019-05-23 11:16:51,432 INFO L146 ILogger]: Without dead ends: 208 [2019-05-23 11:16:51,438 INFO L146 ILogger]: 0 DeclaredPredicates, 165 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4969 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=2064, Invalid=11978, Unknown=0, NotChecked=0, Total=14042 [2019-05-23 11:16:51,439 INFO L146 ILogger]: Start minimizeSevpa. Operand 208 states. [2019-05-23 11:16:51,447 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 208 to 97. [2019-05-23 11:16:51,447 INFO L146 ILogger]: Start removeUnreachable. Operand 97 states. [2019-05-23 11:16:51,448 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 97 states to 97 states and 104 transitions. [2019-05-23 11:16:51,449 INFO L146 ILogger]: Start accepts. Automaton has 97 states and 104 transitions. Word has length 58 [2019-05-23 11:16:51,449 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:51,449 INFO L146 ILogger]: Abstraction has 97 states and 104 transitions. [2019-05-23 11:16:51,449 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:16:51,449 INFO L146 ILogger]: Start isEmpty. Operand 97 states and 104 transitions. [2019-05-23 11:16:51,451 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 73 [2019-05-23 11:16:51,451 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:51,451 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 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] [2019-05-23 11:16:51,451 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:51,451 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:51,452 INFO L146 ILogger]: Analyzing trace with hash 1294402234, now seen corresponding path program 1 times [2019-05-23 11:16:51,452 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:51,452 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:51,453 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:51,453 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:51,453 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:51,470 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:51,645 INFO L146 ILogger]: Checked inductivity of 117 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:16:51,646 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:51,646 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 11:16:51,654 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:51,675 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:51,675 INFO L146 ILogger]: Trace formula consists of 115 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:16:51,678 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:51,719 INFO L146 ILogger]: Checked inductivity of 117 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:16:51,741 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:51,742 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2019-05-23 11:16:51,742 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:16:51,742 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:16:51,743 INFO L146 ILogger]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:16:51,743 INFO L146 ILogger]: Start difference. First operand 97 states and 104 transitions. Second operand 17 states. [2019-05-23 11:16:51,953 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:51,953 INFO L146 ILogger]: Finished difference Result 137 states and 147 transitions. [2019-05-23 11:16:51,955 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:16:51,955 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 72 [2019-05-23 11:16:51,956 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:51,957 INFO L146 ILogger]: With dead ends: 137 [2019-05-23 11:16:51,957 INFO L146 ILogger]: Without dead ends: 117 [2019-05-23 11:16:51,958 INFO L146 ILogger]: 0 DeclaredPredicates, 98 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:16:51,958 INFO L146 ILogger]: Start minimizeSevpa. Operand 117 states. [2019-05-23 11:16:51,964 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 117 to 108. [2019-05-23 11:16:51,964 INFO L146 ILogger]: Start removeUnreachable. Operand 108 states. [2019-05-23 11:16:51,965 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 108 states to 108 states and 116 transitions. [2019-05-23 11:16:51,965 INFO L146 ILogger]: Start accepts. Automaton has 108 states and 116 transitions. Word has length 72 [2019-05-23 11:16:51,966 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:51,966 INFO L146 ILogger]: Abstraction has 108 states and 116 transitions. [2019-05-23 11:16:51,966 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:16:51,966 INFO L146 ILogger]: Start isEmpty. Operand 108 states and 116 transitions. [2019-05-23 11:16:51,967 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 80 [2019-05-23 11:16:51,967 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:51,968 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 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] [2019-05-23 11:16:51,968 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:51,968 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:51,968 INFO L146 ILogger]: Analyzing trace with hash 1343088012, now seen corresponding path program 2 times [2019-05-23 11:16:51,968 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:51,969 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:51,969 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:51,970 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:51,970 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:51,985 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:52,204 INFO L146 ILogger]: Checked inductivity of 160 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:16:52,205 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:52,205 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 11:16:52,213 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:16:52,256 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:16:52,256 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:52,257 INFO L146 ILogger]: Trace formula consists of 125 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:16:52,261 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:52,418 INFO L146 ILogger]: Checked inductivity of 160 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:16:52,445 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:52,445 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2019-05-23 11:16:52,445 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:16:52,446 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:16:52,446 INFO L146 ILogger]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:16:52,446 INFO L146 ILogger]: Start difference. First operand 108 states and 116 transitions. Second operand 19 states. [2019-05-23 11:16:53,041 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:53,041 INFO L146 ILogger]: Finished difference Result 148 states and 159 transitions. [2019-05-23 11:16:53,048 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:16:53,049 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 79 [2019-05-23 11:16:53,049 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:53,050 INFO L146 ILogger]: With dead ends: 148 [2019-05-23 11:16:53,050 INFO L146 ILogger]: Without dead ends: 128 [2019-05-23 11:16:53,051 INFO L146 ILogger]: 0 DeclaredPredicates, 109 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:16:53,051 INFO L146 ILogger]: Start minimizeSevpa. Operand 128 states. [2019-05-23 11:16:53,061 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 128 to 119. [2019-05-23 11:16:53,062 INFO L146 ILogger]: Start removeUnreachable. Operand 119 states. [2019-05-23 11:16:53,062 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 119 states to 119 states and 128 transitions. [2019-05-23 11:16:53,066 INFO L146 ILogger]: Start accepts. Automaton has 119 states and 128 transitions. Word has length 79 [2019-05-23 11:16:53,066 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:53,066 INFO L146 ILogger]: Abstraction has 119 states and 128 transitions. [2019-05-23 11:16:53,066 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:16:53,067 INFO L146 ILogger]: Start isEmpty. Operand 119 states and 128 transitions. [2019-05-23 11:16:53,070 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 87 [2019-05-23 11:16:53,070 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:53,070 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 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] [2019-05-23 11:16:53,070 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:53,071 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:53,071 INFO L146 ILogger]: Analyzing trace with hash 1589351034, now seen corresponding path program 3 times [2019-05-23 11:16:53,071 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:53,071 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:53,072 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:53,072 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:53,072 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:53,109 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:53,389 INFO L146 ILogger]: Checked inductivity of 210 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:16:53,390 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:53,390 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 11:16:53,405 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:16:53,425 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:16:53,426 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:53,426 INFO L146 ILogger]: Trace formula consists of 85 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:16:53,429 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:54,322 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:16:54,323 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:16:54,324 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:16:54,324 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:16:54,325 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-05-23 11:16:54,391 INFO L146 ILogger]: Checked inductivity of 210 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2019-05-23 11:16:54,416 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:54,416 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14] total 31 [2019-05-23 11:16:54,416 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:16:54,420 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:16:54,420 INFO L146 ILogger]: CoverageRelationStatistics Valid=147, Invalid=783, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:16:54,421 INFO L146 ILogger]: Start difference. First operand 119 states and 128 transitions. Second operand 31 states. [2019-05-23 11:16:56,364 WARN L146 ILogger]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2019-05-23 11:16:56,959 WARN L146 ILogger]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2019-05-23 11:16:58,226 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:58,227 INFO L146 ILogger]: Finished difference Result 289 states and 313 transitions. [2019-05-23 11:16:58,227 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2019-05-23 11:16:58,227 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 86 [2019-05-23 11:16:58,228 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:58,229 INFO L146 ILogger]: With dead ends: 289 [2019-05-23 11:16:58,229 INFO L146 ILogger]: Without dead ends: 269 [2019-05-23 11:16:58,233 INFO L146 ILogger]: 0 DeclaredPredicates, 175 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3202 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1787, Invalid=8515, Unknown=0, NotChecked=0, Total=10302 [2019-05-23 11:16:58,233 INFO L146 ILogger]: Start minimizeSevpa. Operand 269 states. [2019-05-23 11:16:58,253 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 269 to 202. [2019-05-23 11:16:58,253 INFO L146 ILogger]: Start removeUnreachable. Operand 202 states. [2019-05-23 11:16:58,254 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 202 states to 202 states and 221 transitions. [2019-05-23 11:16:58,254 INFO L146 ILogger]: Start accepts. Automaton has 202 states and 221 transitions. Word has length 86 [2019-05-23 11:16:58,255 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:58,255 INFO L146 ILogger]: Abstraction has 202 states and 221 transitions. [2019-05-23 11:16:58,255 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:16:58,255 INFO L146 ILogger]: Start isEmpty. Operand 202 states and 221 transitions. [2019-05-23 11:16:58,256 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 97 [2019-05-23 11:16:58,257 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:58,257 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 8, 8, 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] [2019-05-23 11:16:58,257 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:58,257 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:58,257 INFO L146 ILogger]: Analyzing trace with hash -1361114813, now seen corresponding path program 1 times [2019-05-23 11:16:58,258 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:58,258 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:58,259 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:58,259 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:58,259 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:58,273 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:58,509 INFO L146 ILogger]: Checked inductivity of 259 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:16:58,509 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:58,510 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 11:16:58,518 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:58,540 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:58,541 INFO L146 ILogger]: Trace formula consists of 150 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:16:58,543 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:58,587 INFO L146 ILogger]: Checked inductivity of 259 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:16:58,607 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:58,607 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-05-23 11:16:58,607 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:16:58,608 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:16:58,609 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:16:58,609 INFO L146 ILogger]: Start difference. First operand 202 states and 221 transitions. Second operand 23 states. [2019-05-23 11:16:59,076 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:59,076 INFO L146 ILogger]: Finished difference Result 266 states and 291 transitions. [2019-05-23 11:16:59,076 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:16:59,077 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 96 [2019-05-23 11:16:59,077 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:59,078 INFO L146 ILogger]: With dead ends: 266 [2019-05-23 11:16:59,078 INFO L146 ILogger]: Without dead ends: 234 [2019-05-23 11:16:59,079 INFO L146 ILogger]: 0 DeclaredPredicates, 134 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:16:59,080 INFO L146 ILogger]: Start minimizeSevpa. Operand 234 states. [2019-05-23 11:16:59,086 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 234 to 220. [2019-05-23 11:16:59,086 INFO L146 ILogger]: Start removeUnreachable. Operand 220 states. [2019-05-23 11:16:59,087 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 220 states to 220 states and 241 transitions. [2019-05-23 11:16:59,087 INFO L146 ILogger]: Start accepts. Automaton has 220 states and 241 transitions. Word has length 96 [2019-05-23 11:16:59,088 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:59,088 INFO L146 ILogger]: Abstraction has 220 states and 241 transitions. [2019-05-23 11:16:59,088 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:16:59,088 INFO L146 ILogger]: Start isEmpty. Operand 220 states and 241 transitions. [2019-05-23 11:16:59,089 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 104 [2019-05-23 11:16:59,090 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:59,090 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 9, 9, 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] [2019-05-23 11:16:59,090 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:59,090 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:59,090 INFO L146 ILogger]: Analyzing trace with hash -303815965, now seen corresponding path program 2 times [2019-05-23 11:16:59,091 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:59,091 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:59,091 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:59,092 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:59,092 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:59,105 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:59,342 INFO L146 ILogger]: Checked inductivity of 322 backedges. 0 proven. 316 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:16:59,342 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:59,342 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-05-23 11:16:59,351 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:16:59,376 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:16:59,376 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:59,377 INFO L146 ILogger]: Trace formula consists of 160 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 11:16:59,379 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:59,448 INFO L146 ILogger]: Checked inductivity of 322 backedges. 0 proven. 316 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:16:59,476 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:59,476 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2019-05-23 11:16:59,477 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:16:59,477 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:16:59,477 INFO L146 ILogger]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:16:59,478 INFO L146 ILogger]: Start difference. First operand 220 states and 241 transitions. Second operand 25 states. [2019-05-23 11:16:59,868 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:59,868 INFO L146 ILogger]: Finished difference Result 284 states and 311 transitions. [2019-05-23 11:16:59,870 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:16:59,870 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 103 [2019-05-23 11:16:59,870 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:59,871 INFO L146 ILogger]: With dead ends: 284 [2019-05-23 11:16:59,871 INFO L146 ILogger]: Without dead ends: 252 [2019-05-23 11:16:59,872 INFO L146 ILogger]: 0 DeclaredPredicates, 145 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:16:59,873 INFO L146 ILogger]: Start minimizeSevpa. Operand 252 states. [2019-05-23 11:16:59,879 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 252 to 238. [2019-05-23 11:16:59,879 INFO L146 ILogger]: Start removeUnreachable. Operand 238 states. [2019-05-23 11:16:59,880 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 238 states to 238 states and 261 transitions. [2019-05-23 11:16:59,880 INFO L146 ILogger]: Start accepts. Automaton has 238 states and 261 transitions. Word has length 103 [2019-05-23 11:16:59,881 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:59,881 INFO L146 ILogger]: Abstraction has 238 states and 261 transitions. [2019-05-23 11:16:59,881 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:16:59,881 INFO L146 ILogger]: Start isEmpty. Operand 238 states and 261 transitions. [2019-05-23 11:16:59,882 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 111 [2019-05-23 11:16:59,882 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:59,883 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 10, 10, 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] [2019-05-23 11:16:59,883 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:59,883 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:59,883 INFO L146 ILogger]: Analyzing trace with hash -1721961149, now seen corresponding path program 3 times [2019-05-23 11:16:59,883 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:59,884 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:59,884 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:59,884 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:59,885 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:59,898 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:00,822 INFO L146 ILogger]: Checked inductivity of 392 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:17:00,822 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:00,822 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-05-23 11:17:00,831 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:17:00,850 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:17:00,851 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:00,851 INFO L146 ILogger]: Trace formula consists of 90 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:17:00,854 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:01,068 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:17:01,068 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:17:01,070 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:01,070 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:17:01,070 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-05-23 11:17:01,160 INFO L146 ILogger]: Checked inductivity of 392 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2019-05-23 11:17:01,180 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:01,180 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 14] total 37 [2019-05-23 11:17:01,180 INFO L146 ILogger]: Interpolant automaton has 37 states [2019-05-23 11:17:01,181 INFO L146 ILogger]: Constructing interpolant automaton starting with 37 interpolants. [2019-05-23 11:17:01,181 INFO L146 ILogger]: CoverageRelationStatistics Valid=219, Invalid=1113, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:17:01,181 INFO L146 ILogger]: Start difference. First operand 238 states and 261 transitions. Second operand 37 states. [2019-05-23 11:17:04,042 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:04,042 INFO L146 ILogger]: Finished difference Result 455 states and 498 transitions. [2019-05-23 11:17:04,043 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2019-05-23 11:17:04,043 INFO L146 ILogger]: Start accepts. Automaton has 37 states. Word has length 110 [2019-05-23 11:17:04,043 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:04,045 INFO L146 ILogger]: With dead ends: 455 [2019-05-23 11:17:04,045 INFO L146 ILogger]: Without dead ends: 423 [2019-05-23 11:17:04,050 INFO L146 ILogger]: 0 DeclaredPredicates, 214 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4380 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2669, Invalid=10903, Unknown=0, NotChecked=0, Total=13572 [2019-05-23 11:17:04,051 INFO L146 ILogger]: Start minimizeSevpa. Operand 423 states. [2019-05-23 11:17:04,058 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 423 to 249. [2019-05-23 11:17:04,058 INFO L146 ILogger]: Start removeUnreachable. Operand 249 states. [2019-05-23 11:17:04,059 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 249 states to 249 states and 273 transitions. [2019-05-23 11:17:04,059 INFO L146 ILogger]: Start accepts. Automaton has 249 states and 273 transitions. Word has length 110 [2019-05-23 11:17:04,059 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:04,059 INFO L146 ILogger]: Abstraction has 249 states and 273 transitions. [2019-05-23 11:17:04,059 INFO L146 ILogger]: Interpolant automaton has 37 states. [2019-05-23 11:17:04,060 INFO L146 ILogger]: Start isEmpty. Operand 249 states and 273 transitions. [2019-05-23 11:17:04,060 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 118 [2019-05-23 11:17:04,061 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:04,061 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 11, 11, 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] [2019-05-23 11:17:04,061 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:04,061 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:04,062 INFO L146 ILogger]: Analyzing trace with hash -53138795, now seen corresponding path program 4 times [2019-05-23 11:17:04,062 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:04,062 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:04,062 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:04,063 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:04,063 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:04,076 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:04,412 INFO L146 ILogger]: Checked inductivity of 469 backedges. 0 proven. 463 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:17:04,413 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:04,413 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-05-23 11:17:04,422 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:17:04,443 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:17:04,444 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:04,445 INFO L146 ILogger]: Trace formula consists of 157 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:17:04,447 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:05,217 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:05,217 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 26 [2019-05-23 11:17:05,219 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:17:05,222 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:05,222 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:17:05,223 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:40, output treesize:5 [2019-05-23 11:17:05,347 INFO L146 ILogger]: Checked inductivity of 469 backedges. 64 proven. 50 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2019-05-23 11:17:05,378 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:05,379 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 17] total 41 [2019-05-23 11:17:05,379 INFO L146 ILogger]: Interpolant automaton has 41 states [2019-05-23 11:17:05,379 INFO L146 ILogger]: Constructing interpolant automaton starting with 41 interpolants. [2019-05-23 11:17:05,380 INFO L146 ILogger]: CoverageRelationStatistics Valid=237, Invalid=1403, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:17:05,380 INFO L146 ILogger]: Start difference. First operand 249 states and 273 transitions. Second operand 41 states. [2019-05-23 11:17:17,215 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:17,216 INFO L146 ILogger]: Finished difference Result 672 states and 732 transitions. [2019-05-23 11:17:17,217 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 238 states. [2019-05-23 11:17:17,217 INFO L146 ILogger]: Start accepts. Automaton has 41 states. Word has length 117 [2019-05-23 11:17:17,218 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:17,221 INFO L146 ILogger]: With dead ends: 672 [2019-05-23 11:17:17,221 INFO L146 ILogger]: Without dead ends: 640 [2019-05-23 11:17:17,228 INFO L146 ILogger]: 0 DeclaredPredicates, 361 GetRequests, 102 SyntacticMatches, 2 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27340 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=8527, Invalid=58295, Unknown=0, NotChecked=0, Total=66822 [2019-05-23 11:17:17,229 INFO L146 ILogger]: Start minimizeSevpa. Operand 640 states. [2019-05-23 11:17:17,241 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 640 to 403. [2019-05-23 11:17:17,242 INFO L146 ILogger]: Start removeUnreachable. Operand 403 states. [2019-05-23 11:17:17,243 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 403 states to 403 states and 442 transitions. [2019-05-23 11:17:17,243 INFO L146 ILogger]: Start accepts. Automaton has 403 states and 442 transitions. Word has length 117 [2019-05-23 11:17:17,244 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:17,244 INFO L146 ILogger]: Abstraction has 403 states and 442 transitions. [2019-05-23 11:17:17,244 INFO L146 ILogger]: Interpolant automaton has 41 states. [2019-05-23 11:17:17,244 INFO L146 ILogger]: Start isEmpty. Operand 403 states and 442 transitions. [2019-05-23 11:17:17,246 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 128 [2019-05-23 11:17:17,246 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:17,246 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 11, 11, 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] [2019-05-23 11:17:17,246 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:17,247 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:17,247 INFO L146 ILogger]: Analyzing trace with hash -655055110, now seen corresponding path program 5 times [2019-05-23 11:17:17,247 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:17,247 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:17,248 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:17,248 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:17,248 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:17,280 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:17,616 INFO L146 ILogger]: Checked inductivity of 546 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:17:17,616 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:17,616 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-05-23 11:17:17,626 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:17:17,662 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2019-05-23 11:17:17,662 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:17,664 INFO L146 ILogger]: Trace formula consists of 195 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:17:17,666 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:17,710 INFO L146 ILogger]: Checked inductivity of 546 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:17:17,739 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:17,739 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2019-05-23 11:17:17,739 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:17:17,740 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:17:17,740 INFO L146 ILogger]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:17:17,740 INFO L146 ILogger]: Start difference. First operand 403 states and 442 transitions. Second operand 31 states. [2019-05-23 11:17:19,496 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:19,496 INFO L146 ILogger]: Finished difference Result 487 states and 535 transitions. [2019-05-23 11:17:19,497 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-05-23 11:17:19,497 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 127 [2019-05-23 11:17:19,497 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:19,500 INFO L146 ILogger]: With dead ends: 487 [2019-05-23 11:17:19,500 INFO L146 ILogger]: Without dead ends: 455 [2019-05-23 11:17:19,502 INFO L146 ILogger]: 0 DeclaredPredicates, 181 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2019-05-23 11:17:19,503 INFO L146 ILogger]: Start minimizeSevpa. Operand 455 states. [2019-05-23 11:17:19,518 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 455 to 432. [2019-05-23 11:17:19,518 INFO L146 ILogger]: Start removeUnreachable. Operand 432 states. [2019-05-23 11:17:19,520 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 432 states to 432 states and 474 transitions. [2019-05-23 11:17:19,520 INFO L146 ILogger]: Start accepts. Automaton has 432 states and 474 transitions. Word has length 127 [2019-05-23 11:17:19,520 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:19,520 INFO L146 ILogger]: Abstraction has 432 states and 474 transitions. [2019-05-23 11:17:19,521 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:17:19,521 INFO L146 ILogger]: Start isEmpty. Operand 432 states and 474 transitions. [2019-05-23 11:17:19,522 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 135 [2019-05-23 11:17:19,522 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:19,522 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 12, 12, 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] [2019-05-23 11:17:19,522 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:19,523 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:19,523 INFO L146 ILogger]: Analyzing trace with hash -1934952116, now seen corresponding path program 6 times [2019-05-23 11:17:19,523 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:19,523 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:19,524 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:19,524 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:19,524 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:19,537 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:20,253 INFO L146 ILogger]: Checked inductivity of 636 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:17:20,253 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:20,253 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-05-23 11:17:20,263 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:17:20,291 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2019-05-23 11:17:20,292 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:20,293 INFO L146 ILogger]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:17:20,295 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:20,980 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:20,981 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 22 [2019-05-23 11:17:20,982 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:17:20,985 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:20,986 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:17:20,986 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:32, output treesize:5 [2019-05-23 11:17:21,128 INFO L146 ILogger]: Checked inductivity of 636 backedges. 66 proven. 60 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2019-05-23 11:17:21,146 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:21,146 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 18] total 47 [2019-05-23 11:17:21,147 INFO L146 ILogger]: Interpolant automaton has 47 states [2019-05-23 11:17:21,147 INFO L146 ILogger]: Constructing interpolant automaton starting with 47 interpolants. [2019-05-23 11:17:21,147 INFO L146 ILogger]: CoverageRelationStatistics Valid=329, Invalid=1833, Unknown=0, NotChecked=0, Total=2162 [2019-05-23 11:17:21,147 INFO L146 ILogger]: Start difference. First operand 432 states and 474 transitions. Second operand 47 states. [2019-05-23 11:17:22,433 WARN L146 ILogger]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2019-05-23 11:17:22,906 WARN L146 ILogger]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2019-05-23 11:17:32,404 WARN L146 ILogger]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2019-05-23 11:17:36,909 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:36,910 INFO L146 ILogger]: Finished difference Result 652 states and 704 transitions. [2019-05-23 11:17:36,910 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 275 states. [2019-05-23 11:17:36,910 INFO L146 ILogger]: Start accepts. Automaton has 47 states. Word has length 134 [2019-05-23 11:17:36,911 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:36,914 INFO L146 ILogger]: With dead ends: 652 [2019-05-23 11:17:36,914 INFO L146 ILogger]: Without dead ends: 620 [2019-05-23 11:17:36,918 INFO L146 ILogger]: 0 DeclaredPredicates, 430 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 311 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42296 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=13685, Invalid=83971, Unknown=0, NotChecked=0, Total=97656 [2019-05-23 11:17:36,919 INFO L146 ILogger]: Start minimizeSevpa. Operand 620 states. [2019-05-23 11:17:36,927 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 620 to 206. [2019-05-23 11:17:36,927 INFO L146 ILogger]: Start removeUnreachable. Operand 206 states. [2019-05-23 11:17:36,928 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 206 states to 206 states and 222 transitions. [2019-05-23 11:17:36,928 INFO L146 ILogger]: Start accepts. Automaton has 206 states and 222 transitions. Word has length 134 [2019-05-23 11:17:36,928 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:36,928 INFO L146 ILogger]: Abstraction has 206 states and 222 transitions. [2019-05-23 11:17:36,929 INFO L146 ILogger]: Interpolant automaton has 47 states. [2019-05-23 11:17:36,929 INFO L146 ILogger]: Start isEmpty. Operand 206 states and 222 transitions. [2019-05-23 11:17:36,929 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 146 [2019-05-23 11:17:36,930 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:36,930 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:36,930 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:36,930 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:36,930 INFO L146 ILogger]: Analyzing trace with hash 1114499647, now seen corresponding path program 4 times [2019-05-23 11:17:36,931 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:36,931 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:36,931 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:36,932 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:36,932 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:36,944 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:37,371 INFO L146 ILogger]: Checked inductivity of 772 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-05-23 11:17:37,372 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:37,372 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-05-23 11:17:37,380 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:17:37,408 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:17:37,408 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:37,410 INFO L146 ILogger]: Trace formula consists of 193 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:17:37,413 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:37,855 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2019-05-23 11:17:37,855 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:17:37,857 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:37,858 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:17:37,858 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2019-05-23 11:17:37,953 INFO L146 ILogger]: Checked inductivity of 772 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked. [2019-05-23 11:17:37,972 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:37,972 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 17] total 46 [2019-05-23 11:17:37,973 INFO L146 ILogger]: Interpolant automaton has 46 states [2019-05-23 11:17:37,973 INFO L146 ILogger]: Constructing interpolant automaton starting with 46 interpolants. [2019-05-23 11:17:37,973 INFO L146 ILogger]: CoverageRelationStatistics Valid=338, Invalid=1732, Unknown=0, NotChecked=0, Total=2070 [2019-05-23 11:17:37,973 INFO L146 ILogger]: Start difference. First operand 206 states and 222 transitions. Second operand 46 states. [2019-05-23 11:17:42,119 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:42,119 INFO L146 ILogger]: Finished difference Result 456 states and 493 transitions. [2019-05-23 11:17:42,119 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2019-05-23 11:17:42,119 INFO L146 ILogger]: Start accepts. Automaton has 46 states. Word has length 145 [2019-05-23 11:17:42,120 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:42,121 INFO L146 ILogger]: With dead ends: 456 [2019-05-23 11:17:42,121 INFO L146 ILogger]: Without dead ends: 426 [2019-05-23 11:17:42,122 INFO L146 ILogger]: 0 DeclaredPredicates, 280 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6537 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=3663, Invalid=18389, Unknown=0, NotChecked=0, Total=22052 [2019-05-23 11:17:42,123 INFO L146 ILogger]: Start minimizeSevpa. Operand 426 states. [2019-05-23 11:17:42,132 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 426 to 331. [2019-05-23 11:17:42,132 INFO L146 ILogger]: Start removeUnreachable. Operand 331 states. [2019-05-23 11:17:42,133 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 331 states to 331 states and 363 transitions. [2019-05-23 11:17:42,133 INFO L146 ILogger]: Start accepts. Automaton has 331 states and 363 transitions. Word has length 145 [2019-05-23 11:17:42,133 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:42,134 INFO L146 ILogger]: Abstraction has 331 states and 363 transitions. [2019-05-23 11:17:42,134 INFO L146 ILogger]: Interpolant automaton has 46 states. [2019-05-23 11:17:42,134 INFO L146 ILogger]: Start isEmpty. Operand 331 states and 363 transitions. [2019-05-23 11:17:42,135 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 156 [2019-05-23 11:17:42,135 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:42,135 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 15, 15, 3, 3, 3, 3, 3, 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] [2019-05-23 11:17:42,136 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:42,136 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:42,136 INFO L146 ILogger]: Analyzing trace with hash -1584300024, now seen corresponding path program 7 times [2019-05-23 11:17:42,136 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:42,136 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:42,137 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:42,137 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:42,137 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:42,151 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:42,996 INFO L146 ILogger]: Checked inductivity of 863 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-05-23 11:17:42,997 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:42,997 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:43,005 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:43,039 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:43,040 INFO L146 ILogger]: Trace formula consists of 235 conjuncts, 34 conjunts are in the unsatisfiable core [2019-05-23 11:17:43,042 INFO L146 ILogger]: Computing forward predicates...