java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-examples/standard_partial_init_true-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:19:09,308 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:19:09,310 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:19:09,322 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:19:09,322 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:19:09,324 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:19:09,325 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:19:09,327 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:19:09,335 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:19:09,336 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:19:09,337 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:19:09,337 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:19:09,341 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:19:09,342 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:19:09,346 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:19:09,348 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:19:09,349 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:19:09,353 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:19:09,355 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:19:09,357 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:19:09,358 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:19:09,359 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:19:09,361 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:19:09,362 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:19:09,362 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:19:09,363 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:19:09,363 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:19:09,364 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:19:09,364 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:19:09,365 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:19:09,366 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:19:09,367 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:19:09,367 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:19:09,368 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:19:09,368 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:19:09,368 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:19:09,369 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:19:09,370 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:19:09,370 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:19:09,371 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:19:09,386 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:19:09,386 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:19:09,387 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:19:09,388 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:19:09,388 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:19:09,388 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:19:09,388 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:19:09,388 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:19:09,389 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:19:09,389 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:19:09,389 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:19:09,389 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:19:09,389 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:19:09,390 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:19:09,390 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:19:09,390 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:19:09,390 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:19:09,390 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:19:09,391 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:19:09,391 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:19:09,391 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:19:09,391 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:19:09,391 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:19:09,392 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:19:09,392 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:19:09,393 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:19:09,393 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:19:09,394 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:19:09,394 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 11:19:09,437 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:19:09,459 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:19:09,466 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:19:09,467 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:19:09,468 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:19:09,468 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_partial_init_true-unreach-call_ground.i [2019-05-23 11:19:09,537 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bc45b313/9bdb08f6ed95418ea040c1133c226b38/FLAG07d0c3e4c [2019-05-23 11:19:09,992 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:19:09,992 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_partial_init_true-unreach-call_ground.i [2019-05-23 11:19:10,000 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bc45b313/9bdb08f6ed95418ea040c1133c226b38/FLAG07d0c3e4c [2019-05-23 11:19:10,379 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bc45b313/9bdb08f6ed95418ea040c1133c226b38 [2019-05-23 11:19:10,389 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:19:10,390 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:19:10,391 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:19:10,391 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:19:10,395 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:19:10,396 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:19:10" (1/1) ... [2019-05-23 11:19:10,399 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ea85588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:10, skipping insertion in model container [2019-05-23 11:19:10,399 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:19:10" (1/1) ... [2019-05-23 11:19:10,406 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:19:10,426 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:19:10,674 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:19:10,680 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:19:10,715 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:19:10,742 INFO L146 ILogger]: Completed translation [2019-05-23 11:19:10,743 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:10 WrapperNode [2019-05-23 11:19:10,743 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:19:10,744 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:19:10,745 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:19:10,745 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:19:10,756 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:10" (1/1) ... [2019-05-23 11:19:10,771 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:10" (1/1) ... [2019-05-23 11:19:10,804 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:19:10,804 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:19:10,805 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:19:10,805 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:19:10,816 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:10" (1/1) ... [2019-05-23 11:19:10,816 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:10" (1/1) ... [2019-05-23 11:19:10,818 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:10" (1/1) ... [2019-05-23 11:19:10,819 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:10" (1/1) ... [2019-05-23 11:19:10,830 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:10" (1/1) ... [2019-05-23 11:19:10,846 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:10" (1/1) ... [2019-05-23 11:19:10,847 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:10" (1/1) ... [2019-05-23 11:19:10,850 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:19:10,850 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:19:10,851 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:19:10,851 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:19:10,852 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:10" (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 11:19:11,008 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:19:11,009 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:19:11,009 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:19:11,009 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:19:11,009 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:19:11,009 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:19:11,489 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:19:11,490 INFO L146 ILogger]: Removed 11 assume(true) statements. [2019-05-23 11:19:11,491 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:19:11 BoogieIcfgContainer [2019-05-23 11:19:11,491 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:19:11,492 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:19:11,492 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:19:11,495 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:19:11,496 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:19:10" (1/3) ... [2019-05-23 11:19:11,497 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cae447d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:19:11, skipping insertion in model container [2019-05-23 11:19:11,497 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:10" (2/3) ... [2019-05-23 11:19:11,497 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cae447d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:19:11, skipping insertion in model container [2019-05-23 11:19:11,497 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:19:11" (3/3) ... [2019-05-23 11:19:11,499 INFO L146 ILogger]: Analyzing ICFG standard_partial_init_true-unreach-call_ground.i [2019-05-23 11:19:11,510 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:19:11,518 INFO L146 ILogger]: Appying trace abstraction to program that has 2 error locations. [2019-05-23 11:19:11,536 INFO L146 ILogger]: Starting to check reachability of 2 error locations. [2019-05-23 11:19:11,568 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:19:11,569 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:19:11,569 INFO L146 ILogger]: Hoare is true [2019-05-23 11:19:11,569 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:19:11,570 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:19:11,570 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:19:11,570 INFO L146 ILogger]: Difference is false [2019-05-23 11:19:11,570 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:19:11,570 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:19:11,585 INFO L146 ILogger]: Start isEmpty. Operand 60 states. [2019-05-23 11:19:11,592 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 21 [2019-05-23 11:19:11,592 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:11,593 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 11:19:11,596 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:11,602 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:11,602 INFO L146 ILogger]: Analyzing trace with hash -53941111, now seen corresponding path program 1 times [2019-05-23 11:19:11,604 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:11,604 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:11,654 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:11,654 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:11,655 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:11,706 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:11,775 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 11:19:11,777 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:19:11,778 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:19:11,782 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:19:11,795 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:19:11,796 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:19:11,798 INFO L146 ILogger]: Start difference. First operand 60 states. Second operand 3 states. [2019-05-23 11:19:11,892 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:11,892 INFO L146 ILogger]: Finished difference Result 109 states and 125 transitions. [2019-05-23 11:19:11,893 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:19:11,894 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 20 [2019-05-23 11:19:11,894 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:11,904 INFO L146 ILogger]: With dead ends: 109 [2019-05-23 11:19:11,904 INFO L146 ILogger]: Without dead ends: 62 [2019-05-23 11:19:11,907 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 11:19:11,925 INFO L146 ILogger]: Start minimizeSevpa. Operand 62 states. [2019-05-23 11:19:11,944 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 62 to 51. [2019-05-23 11:19:11,946 INFO L146 ILogger]: Start removeUnreachable. Operand 51 states. [2019-05-23 11:19:11,947 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2019-05-23 11:19:11,949 INFO L146 ILogger]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 20 [2019-05-23 11:19:11,949 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:11,949 INFO L146 ILogger]: Abstraction has 51 states and 54 transitions. [2019-05-23 11:19:11,950 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:19:11,950 INFO L146 ILogger]: Start isEmpty. Operand 51 states and 54 transitions. [2019-05-23 11:19:11,951 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 30 [2019-05-23 11:19:11,951 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:11,951 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:11,952 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:11,952 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:11,952 INFO L146 ILogger]: Analyzing trace with hash 466448756, now seen corresponding path program 1 times [2019-05-23 11:19:11,952 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:11,953 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:11,954 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:11,954 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:11,954 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:11,977 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:12,110 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 11:19:12,111 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:12,111 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 11:19:12,131 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:12,168 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:12,170 INFO L146 ILogger]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:19:12,177 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:12,406 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 11:19:12,428 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:12,429 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:19:12,429 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:19:12,430 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:19:12,430 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:19:12,431 INFO L146 ILogger]: Start difference. First operand 51 states and 54 transitions. Second operand 7 states. [2019-05-23 11:19:12,803 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:12,803 INFO L146 ILogger]: Finished difference Result 102 states and 109 transitions. [2019-05-23 11:19:12,804 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:19:12,804 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 29 [2019-05-23 11:19:12,804 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:12,806 INFO L146 ILogger]: With dead ends: 102 [2019-05-23 11:19:12,806 INFO L146 ILogger]: Without dead ends: 75 [2019-05-23 11:19:12,807 INFO L146 ILogger]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:19:12,808 INFO L146 ILogger]: Start minimizeSevpa. Operand 75 states. [2019-05-23 11:19:12,814 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 75 to 64. [2019-05-23 11:19:12,814 INFO L146 ILogger]: Start removeUnreachable. Operand 64 states. [2019-05-23 11:19:12,815 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2019-05-23 11:19:12,816 INFO L146 ILogger]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 29 [2019-05-23 11:19:12,816 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:12,816 INFO L146 ILogger]: Abstraction has 64 states and 68 transitions. [2019-05-23 11:19:12,816 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:19:12,817 INFO L146 ILogger]: Start isEmpty. Operand 64 states and 68 transitions. [2019-05-23 11:19:12,818 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 39 [2019-05-23 11:19:12,818 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:12,818 INFO L146 ILogger]: trace histogram [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 11:19:12,819 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:12,819 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:12,819 INFO L146 ILogger]: Analyzing trace with hash -1089977111, now seen corresponding path program 2 times [2019-05-23 11:19:12,819 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:12,819 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:12,821 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:12,821 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:12,821 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:12,849 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:13,085 INFO L146 ILogger]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:13,086 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:13,086 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 11:19:13,107 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:19:13,139 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-05-23 11:19:13,139 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:13,141 INFO L146 ILogger]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:19:13,143 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:13,193 INFO L146 ILogger]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-05-23 11:19:13,220 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:19:13,220 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2019-05-23 11:19:13,221 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:19:13,222 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:19:13,223 INFO L146 ILogger]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:19:13,223 INFO L146 ILogger]: Start difference. First operand 64 states and 68 transitions. Second operand 9 states. [2019-05-23 11:19:13,958 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:13,958 INFO L146 ILogger]: Finished difference Result 161 states and 175 transitions. [2019-05-23 11:19:13,967 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:19:13,967 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 38 [2019-05-23 11:19:13,967 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:13,969 INFO L146 ILogger]: With dead ends: 161 [2019-05-23 11:19:13,969 INFO L146 ILogger]: Without dead ends: 129 [2019-05-23 11:19:13,972 INFO L146 ILogger]: 0 DeclaredPredicates, 55 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:19:13,972 INFO L146 ILogger]: Start minimizeSevpa. Operand 129 states. [2019-05-23 11:19:13,980 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 129 to 93. [2019-05-23 11:19:13,980 INFO L146 ILogger]: Start removeUnreachable. Operand 93 states. [2019-05-23 11:19:13,982 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2019-05-23 11:19:13,982 INFO L146 ILogger]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 38 [2019-05-23 11:19:13,982 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:13,982 INFO L146 ILogger]: Abstraction has 93 states and 100 transitions. [2019-05-23 11:19:13,983 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:19:13,983 INFO L146 ILogger]: Start isEmpty. Operand 93 states and 100 transitions. [2019-05-23 11:19:13,984 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 50 [2019-05-23 11:19:13,984 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:13,985 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 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 11:19:13,985 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:13,985 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:13,985 INFO L146 ILogger]: Analyzing trace with hash 691984505, now seen corresponding path program 1 times [2019-05-23 11:19:13,985 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:13,986 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:13,986 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:13,986 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:13,987 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:14,022 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:14,207 INFO L146 ILogger]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:14,207 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:14,207 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 11:19:14,229 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:14,270 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:14,271 INFO L146 ILogger]: Trace formula consists of 96 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:19:14,273 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:14,316 INFO L146 ILogger]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:14,336 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:14,336 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2019-05-23 11:19:14,337 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:19:14,337 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:19:14,337 INFO L146 ILogger]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:19:14,337 INFO L146 ILogger]: Start difference. First operand 93 states and 100 transitions. Second operand 11 states. [2019-05-23 11:19:14,898 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:14,898 INFO L146 ILogger]: Finished difference Result 166 states and 179 transitions. [2019-05-23 11:19:14,899 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:19:14,899 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 49 [2019-05-23 11:19:14,900 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:14,901 INFO L146 ILogger]: With dead ends: 166 [2019-05-23 11:19:14,901 INFO L146 ILogger]: Without dead ends: 139 [2019-05-23 11:19:14,902 INFO L146 ILogger]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:19:14,902 INFO L146 ILogger]: Start minimizeSevpa. Operand 139 states. [2019-05-23 11:19:14,911 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 139 to 115. [2019-05-23 11:19:14,913 INFO L146 ILogger]: Start removeUnreachable. Operand 115 states. [2019-05-23 11:19:14,914 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 115 states to 115 states and 124 transitions. [2019-05-23 11:19:14,914 INFO L146 ILogger]: Start accepts. Automaton has 115 states and 124 transitions. Word has length 49 [2019-05-23 11:19:14,914 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:14,915 INFO L146 ILogger]: Abstraction has 115 states and 124 transitions. [2019-05-23 11:19:14,915 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:19:14,915 INFO L146 ILogger]: Start isEmpty. Operand 115 states and 124 transitions. [2019-05-23 11:19:14,917 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 59 [2019-05-23 11:19:14,917 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:14,917 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:14,917 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:14,917 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:14,918 INFO L146 ILogger]: Analyzing trace with hash -1834355836, now seen corresponding path program 2 times [2019-05-23 11:19:14,918 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:14,918 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:14,919 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:14,919 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:14,919 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:14,942 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:15,123 INFO L146 ILogger]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:15,123 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:15,123 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 11:19:15,132 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:19:15,179 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:19:15,179 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:15,180 INFO L146 ILogger]: Trace formula consists of 109 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:19:15,183 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:15,244 INFO L146 ILogger]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:15,265 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:15,265 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2019-05-23 11:19:15,266 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:19:15,266 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:19:15,266 INFO L146 ILogger]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:19:15,267 INFO L146 ILogger]: Start difference. First operand 115 states and 124 transitions. Second operand 13 states. [2019-05-23 11:19:15,505 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:15,506 INFO L146 ILogger]: Finished difference Result 188 states and 203 transitions. [2019-05-23 11:19:15,506 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:19:15,506 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 58 [2019-05-23 11:19:15,507 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:15,508 INFO L146 ILogger]: With dead ends: 188 [2019-05-23 11:19:15,508 INFO L146 ILogger]: Without dead ends: 161 [2019-05-23 11:19:15,509 INFO L146 ILogger]: 0 DeclaredPredicates, 76 GetRequests, 57 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 11:19:15,510 INFO L146 ILogger]: Start minimizeSevpa. Operand 161 states. [2019-05-23 11:19:15,519 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 161 to 137. [2019-05-23 11:19:15,519 INFO L146 ILogger]: Start removeUnreachable. Operand 137 states. [2019-05-23 11:19:15,520 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 137 states to 137 states and 148 transitions. [2019-05-23 11:19:15,521 INFO L146 ILogger]: Start accepts. Automaton has 137 states and 148 transitions. Word has length 58 [2019-05-23 11:19:15,521 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:15,521 INFO L146 ILogger]: Abstraction has 137 states and 148 transitions. [2019-05-23 11:19:15,521 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:19:15,522 INFO L146 ILogger]: Start isEmpty. Operand 137 states and 148 transitions. [2019-05-23 11:19:15,524 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 68 [2019-05-23 11:19:15,524 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:15,524 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:15,525 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:15,525 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:15,525 INFO L146 ILogger]: Analyzing trace with hash -810216231, now seen corresponding path program 3 times [2019-05-23 11:19:15,525 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:15,526 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:15,527 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:15,527 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:15,527 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:15,543 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:15,695 INFO L146 ILogger]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:15,696 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:15,696 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 11:19:15,708 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:19:15,777 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:19:15,777 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:15,778 INFO L146 ILogger]: Trace formula consists of 109 conjuncts, 17 conjunts are in the unsatisfiable core [2019-05-23 11:19:15,782 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:15,957 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:19:15,957 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:15,971 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:15,972 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 11:19:15,972 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2019-05-23 11:19:16,169 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:19:16,177 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:16,177 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 17 treesize of output 10 [2019-05-23 11:19:16,178 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:16,193 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:16,194 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 11:19:16,194 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:13 [2019-05-23 11:19:16,260 INFO L146 ILogger]: Checked inductivity of 87 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-05-23 11:19:16,279 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:16,280 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2019-05-23 11:19:16,280 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:19:16,280 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:19:16,281 INFO L146 ILogger]: CoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:19:16,281 INFO L146 ILogger]: Start difference. First operand 137 states and 148 transitions. Second operand 23 states. [2019-05-23 11:19:18,816 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:18,817 INFO L146 ILogger]: Finished difference Result 358 states and 386 transitions. [2019-05-23 11:19:18,817 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2019-05-23 11:19:18,817 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 67 [2019-05-23 11:19:18,818 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:18,820 INFO L146 ILogger]: With dead ends: 358 [2019-05-23 11:19:18,820 INFO L146 ILogger]: Without dead ends: 331 [2019-05-23 11:19:18,825 INFO L146 ILogger]: 0 DeclaredPredicates, 138 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2087 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1175, Invalid=5467, Unknown=0, NotChecked=0, Total=6642 [2019-05-23 11:19:18,826 INFO L146 ILogger]: Start minimizeSevpa. Operand 331 states. [2019-05-23 11:19:18,839 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 331 to 227. [2019-05-23 11:19:18,839 INFO L146 ILogger]: Start removeUnreachable. Operand 227 states. [2019-05-23 11:19:18,841 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 227 states to 227 states and 246 transitions. [2019-05-23 11:19:18,841 INFO L146 ILogger]: Start accepts. Automaton has 227 states and 246 transitions. Word has length 67 [2019-05-23 11:19:18,841 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:18,841 INFO L146 ILogger]: Abstraction has 227 states and 246 transitions. [2019-05-23 11:19:18,842 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:19:18,842 INFO L146 ILogger]: Start isEmpty. Operand 227 states and 246 transitions. [2019-05-23 11:19:18,845 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 79 [2019-05-23 11:19:18,845 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:18,846 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 4, 4, 4, 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 11:19:18,846 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:18,846 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:18,846 INFO L146 ILogger]: Analyzing trace with hash 1626073929, now seen corresponding path program 4 times [2019-05-23 11:19:18,846 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:18,847 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:18,847 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:18,848 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:18,848 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:18,865 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:19,092 INFO L146 ILogger]: Checked inductivity of 127 backedges. 0 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:19,092 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:19,092 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:19:19,101 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:19:19,132 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:19:19,133 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:19,134 INFO L146 ILogger]: Trace formula consists of 108 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:19:19,137 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:19,195 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:19:19,195 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:19,203 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:19,203 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:19,204 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2019-05-23 11:19:19,401 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:19,402 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 48 [2019-05-23 11:19:19,404 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:19,420 INFO L146 ILogger]: treesize reduction 24, result has 50.0 percent of original size [2019-05-23 11:19:19,421 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:19,422 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:24 [2019-05-23 11:19:20,118 INFO L146 ILogger]: treesize reduction 10, result has 73.0 percent of original size [2019-05-23 11:19:20,119 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2019-05-23 11:19:20,126 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-05-23 11:19:20,152 INFO L146 ILogger]: treesize reduction 35, result has 25.5 percent of original size [2019-05-23 11:19:20,153 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 11:19:20,153 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:44, output treesize:12 [2019-05-23 11:19:20,243 INFO L146 ILogger]: Checked inductivity of 127 backedges. 66 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:20,263 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:20,263 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 23] total 36 [2019-05-23 11:19:20,263 INFO L146 ILogger]: Interpolant automaton has 36 states [2019-05-23 11:19:20,264 INFO L146 ILogger]: Constructing interpolant automaton starting with 36 interpolants. [2019-05-23 11:19:20,264 INFO L146 ILogger]: CoverageRelationStatistics Valid=133, Invalid=1127, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:19:20,265 INFO L146 ILogger]: Start difference. First operand 227 states and 246 transitions. Second operand 36 states. [2019-05-23 11:19:24,731 WARN L146 ILogger]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2019-05-23 11:19:28,684 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:28,684 INFO L146 ILogger]: Finished difference Result 803 states and 870 transitions. [2019-05-23 11:19:28,684 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2019-05-23 11:19:28,684 INFO L146 ILogger]: Start accepts. Automaton has 36 states. Word has length 78 [2019-05-23 11:19:28,685 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:28,691 INFO L146 ILogger]: With dead ends: 803 [2019-05-23 11:19:28,691 INFO L146 ILogger]: Without dead ends: 768 [2019-05-23 11:19:28,700 INFO L146 ILogger]: 0 DeclaredPredicates, 240 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12620 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=2826, Invalid=30846, Unknown=0, NotChecked=0, Total=33672 [2019-05-23 11:19:28,701 INFO L146 ILogger]: Start minimizeSevpa. Operand 768 states. [2019-05-23 11:19:28,721 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 768 to 392. [2019-05-23 11:19:28,721 INFO L146 ILogger]: Start removeUnreachable. Operand 392 states. [2019-05-23 11:19:28,723 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 392 states to 392 states and 429 transitions. [2019-05-23 11:19:28,723 INFO L146 ILogger]: Start accepts. Automaton has 392 states and 429 transitions. Word has length 78 [2019-05-23 11:19:28,724 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:28,724 INFO L146 ILogger]: Abstraction has 392 states and 429 transitions. [2019-05-23 11:19:28,724 INFO L146 ILogger]: Interpolant automaton has 36 states. [2019-05-23 11:19:28,724 INFO L146 ILogger]: Start isEmpty. Operand 392 states and 429 transitions. [2019-05-23 11:19:28,729 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 88 [2019-05-23 11:19:28,729 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:28,729 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 5, 5, 5, 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 11:19:28,729 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:28,730 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:28,730 INFO L146 ILogger]: Analyzing trace with hash 322923380, now seen corresponding path program 5 times [2019-05-23 11:19:28,730 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:28,730 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:28,731 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:28,731 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:28,731 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:28,746 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:28,920 INFO L146 ILogger]: Checked inductivity of 178 backedges. 0 proven. 178 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:28,920 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:28,920 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:19:28,939 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:19:29,075 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2019-05-23 11:19:29,075 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:29,077 INFO L146 ILogger]: Trace formula consists of 152 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:19:29,081 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:29,188 INFO L146 ILogger]: Checked inductivity of 178 backedges. 0 proven. 178 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:29,207 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:29,207 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2019-05-23 11:19:29,207 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:19:29,208 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:19:29,208 INFO L146 ILogger]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:19:29,208 INFO L146 ILogger]: Start difference. First operand 392 states and 429 transitions. Second operand 19 states. [2019-05-23 11:19:29,662 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:29,663 INFO L146 ILogger]: Finished difference Result 575 states and 635 transitions. [2019-05-23 11:19:29,663 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:19:29,664 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 87 [2019-05-23 11:19:29,664 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:29,668 INFO L146 ILogger]: With dead ends: 575 [2019-05-23 11:19:29,669 INFO L146 ILogger]: Without dead ends: 540 [2019-05-23 11:19:29,670 INFO L146 ILogger]: 0 DeclaredPredicates, 117 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:19:29,671 INFO L146 ILogger]: Start minimizeSevpa. Operand 540 states. [2019-05-23 11:19:29,685 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 540 to 440. [2019-05-23 11:19:29,686 INFO L146 ILogger]: Start removeUnreachable. Operand 440 states. [2019-05-23 11:19:29,687 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 440 states to 440 states and 481 transitions. [2019-05-23 11:19:29,687 INFO L146 ILogger]: Start accepts. Automaton has 440 states and 481 transitions. Word has length 87 [2019-05-23 11:19:29,688 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:29,688 INFO L146 ILogger]: Abstraction has 440 states and 481 transitions. [2019-05-23 11:19:29,688 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:19:29,688 INFO L146 ILogger]: Start isEmpty. Operand 440 states and 481 transitions. [2019-05-23 11:19:29,691 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 97 [2019-05-23 11:19:29,691 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:29,692 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 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 11:19:29,692 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:29,692 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:29,692 INFO L146 ILogger]: Analyzing trace with hash -779557313, now seen corresponding path program 6 times [2019-05-23 11:19:29,693 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:29,693 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:29,693 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:29,694 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:29,694 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:29,709 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:29,940 INFO L146 ILogger]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:29,940 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:29,940 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:19:29,950 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:19:30,012 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2019-05-23 11:19:30,012 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:30,013 INFO L146 ILogger]: Trace formula consists of 165 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:19:30,017 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:30,067 INFO L146 ILogger]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:30,096 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:30,096 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:19:30,097 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:19:30,097 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:19:30,097 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:19:30,097 INFO L146 ILogger]: Start difference. First operand 440 states and 481 transitions. Second operand 21 states. [2019-05-23 11:19:30,423 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:30,423 INFO L146 ILogger]: Finished difference Result 623 states and 687 transitions. [2019-05-23 11:19:30,423 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:19:30,424 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 96 [2019-05-23 11:19:30,424 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:30,427 INFO L146 ILogger]: With dead ends: 623 [2019-05-23 11:19:30,427 INFO L146 ILogger]: Without dead ends: 588 [2019-05-23 11:19:30,428 INFO L146 ILogger]: 0 DeclaredPredicates, 130 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:19:30,429 INFO L146 ILogger]: Start minimizeSevpa. Operand 588 states. [2019-05-23 11:19:30,439 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 588 to 488. [2019-05-23 11:19:30,439 INFO L146 ILogger]: Start removeUnreachable. Operand 488 states. [2019-05-23 11:19:30,441 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 488 states to 488 states and 533 transitions. [2019-05-23 11:19:30,441 INFO L146 ILogger]: Start accepts. Automaton has 488 states and 533 transitions. Word has length 96 [2019-05-23 11:19:30,441 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:30,442 INFO L146 ILogger]: Abstraction has 488 states and 533 transitions. [2019-05-23 11:19:30,442 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:19:30,442 INFO L146 ILogger]: Start isEmpty. Operand 488 states and 533 transitions. [2019-05-23 11:19:30,443 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 106 [2019-05-23 11:19:30,444 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:30,444 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 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 11:19:30,444 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:30,444 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:30,444 INFO L146 ILogger]: Analyzing trace with hash -880451628, now seen corresponding path program 7 times [2019-05-23 11:19:30,445 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:30,445 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:30,445 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:30,446 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:30,446 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:30,466 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:30,709 INFO L146 ILogger]: Checked inductivity of 307 backedges. 0 proven. 307 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:30,710 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:30,710 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:19:30,724 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:30,752 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:30,753 INFO L146 ILogger]: Trace formula consists of 178 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:19:30,755 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:30,802 INFO L146 ILogger]: Checked inductivity of 307 backedges. 0 proven. 307 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:30,830 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:30,831 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-05-23 11:19:30,831 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:19:30,832 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:19:30,832 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:19:30,832 INFO L146 ILogger]: Start difference. First operand 488 states and 533 transitions. Second operand 23 states. [2019-05-23 11:19:33,116 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:33,116 INFO L146 ILogger]: Finished difference Result 671 states and 739 transitions. [2019-05-23 11:19:33,117 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:19:33,117 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 105 [2019-05-23 11:19:33,117 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:33,120 INFO L146 ILogger]: With dead ends: 671 [2019-05-23 11:19:33,121 INFO L146 ILogger]: Without dead ends: 636 [2019-05-23 11:19:33,122 INFO L146 ILogger]: 0 DeclaredPredicates, 143 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:19:33,123 INFO L146 ILogger]: Start minimizeSevpa. Operand 636 states. [2019-05-23 11:19:33,138 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 636 to 536. [2019-05-23 11:19:33,139 INFO L146 ILogger]: Start removeUnreachable. Operand 536 states. [2019-05-23 11:19:33,141 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 536 states to 536 states and 585 transitions. [2019-05-23 11:19:33,142 INFO L146 ILogger]: Start accepts. Automaton has 536 states and 585 transitions. Word has length 105 [2019-05-23 11:19:33,142 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:33,143 INFO L146 ILogger]: Abstraction has 536 states and 585 transitions. [2019-05-23 11:19:33,143 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:19:33,143 INFO L146 ILogger]: Start isEmpty. Operand 536 states and 585 transitions. [2019-05-23 11:19:33,153 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 115 [2019-05-23 11:19:33,153 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:33,153 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 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 11:19:33,154 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:33,154 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:33,154 INFO L146 ILogger]: Analyzing trace with hash 843046367, now seen corresponding path program 8 times [2019-05-23 11:19:33,155 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:33,155 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:33,156 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:33,156 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:33,157 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:33,193 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:34,060 INFO L146 ILogger]: Checked inductivity of 385 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:34,060 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:34,061 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 11:19:34,069 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:19:34,097 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:19:34,097 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:34,098 INFO L146 ILogger]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 11:19:34,100 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:34,139 INFO L146 ILogger]: Checked inductivity of 385 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:34,159 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:34,159 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2019-05-23 11:19:34,159 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:19:34,159 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:19:34,160 INFO L146 ILogger]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:19:34,160 INFO L146 ILogger]: Start difference. First operand 536 states and 585 transitions. Second operand 25 states. [2019-05-23 11:19:34,923 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:34,923 INFO L146 ILogger]: Finished difference Result 719 states and 791 transitions. [2019-05-23 11:19:34,924 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:19:34,924 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 114 [2019-05-23 11:19:34,924 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:34,927 INFO L146 ILogger]: With dead ends: 719 [2019-05-23 11:19:34,927 INFO L146 ILogger]: Without dead ends: 684 [2019-05-23 11:19:34,929 INFO L146 ILogger]: 0 DeclaredPredicates, 156 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:19:34,930 INFO L146 ILogger]: Start minimizeSevpa. Operand 684 states. [2019-05-23 11:19:34,941 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 684 to 584. [2019-05-23 11:19:34,942 INFO L146 ILogger]: Start removeUnreachable. Operand 584 states. [2019-05-23 11:19:34,943 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 584 states to 584 states and 637 transitions. [2019-05-23 11:19:34,943 INFO L146 ILogger]: Start accepts. Automaton has 584 states and 637 transitions. Word has length 114 [2019-05-23 11:19:34,943 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:34,943 INFO L146 ILogger]: Abstraction has 584 states and 637 transitions. [2019-05-23 11:19:34,944 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:19:34,944 INFO L146 ILogger]: Start isEmpty. Operand 584 states and 637 transitions. [2019-05-23 11:19:34,945 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 124 [2019-05-23 11:19:34,946 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:34,946 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 9, 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] [2019-05-23 11:19:34,946 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:34,946 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:34,947 INFO L146 ILogger]: Analyzing trace with hash 1637547060, now seen corresponding path program 9 times [2019-05-23 11:19:34,947 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:34,947 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:34,947 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:34,948 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:34,948 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:34,962 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:35,784 INFO L146 ILogger]: Checked inductivity of 472 backedges. 0 proven. 472 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:35,785 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:35,785 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 11:19:35,795 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:19:35,827 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-05-23 11:19:35,828 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:35,829 INFO L146 ILogger]: Trace formula consists of 126 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:19:35,831 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:35,914 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:19:35,915 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:35,920 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:35,921 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 11:19:35,921 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2019-05-23 11:19:36,016 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:19:36,018 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2019-05-23 11:19:36,019 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:36,033 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:36,034 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 11:19:36,034 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:14 [2019-05-23 11:19:36,120 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:19:36,122 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:36,123 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 17 treesize of output 10 [2019-05-23 11:19:36,124 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:36,130 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:36,130 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 11:19:36,131 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:13 [2019-05-23 11:19:36,249 INFO L146 ILogger]: Checked inductivity of 472 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2019-05-23 11:19:36,268 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:36,268 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 13] total 36 [2019-05-23 11:19:36,269 INFO L146 ILogger]: Interpolant automaton has 36 states [2019-05-23 11:19:36,269 INFO L146 ILogger]: Constructing interpolant automaton starting with 36 interpolants. [2019-05-23 11:19:36,270 INFO L146 ILogger]: CoverageRelationStatistics Valid=215, Invalid=1045, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:19:36,270 INFO L146 ILogger]: Start difference. First operand 584 states and 637 transitions. Second operand 36 states. [2019-05-23 11:19:41,905 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:41,906 INFO L146 ILogger]: Finished difference Result 1281 states and 1410 transitions. [2019-05-23 11:19:41,906 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2019-05-23 11:19:41,906 INFO L146 ILogger]: Start accepts. Automaton has 36 states. Word has length 123 [2019-05-23 11:19:41,907 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:41,912 INFO L146 ILogger]: With dead ends: 1281 [2019-05-23 11:19:41,912 INFO L146 ILogger]: Without dead ends: 1246 [2019-05-23 11:19:41,918 INFO L146 ILogger]: 0 DeclaredPredicates, 294 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12283 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=5706, Invalid=27600, Unknown=0, NotChecked=0, Total=33306 [2019-05-23 11:19:41,919 INFO L146 ILogger]: Start minimizeSevpa. Operand 1246 states. [2019-05-23 11:19:41,937 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 1246 to 745. [2019-05-23 11:19:41,937 INFO L146 ILogger]: Start removeUnreachable. Operand 745 states. [2019-05-23 11:19:41,938 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 745 states to 745 states and 813 transitions. [2019-05-23 11:19:41,938 INFO L146 ILogger]: Start accepts. Automaton has 745 states and 813 transitions. Word has length 123 [2019-05-23 11:19:41,939 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:41,939 INFO L146 ILogger]: Abstraction has 745 states and 813 transitions. [2019-05-23 11:19:41,939 INFO L146 ILogger]: Interpolant automaton has 36 states. [2019-05-23 11:19:41,939 INFO L146 ILogger]: Start isEmpty. Operand 745 states and 813 transitions. [2019-05-23 11:19:41,941 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 133 [2019-05-23 11:19:41,941 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:41,942 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 10, 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] [2019-05-23 11:19:41,942 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:41,942 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:41,942 INFO L146 ILogger]: Analyzing trace with hash -1570378519, now seen corresponding path program 10 times [2019-05-23 11:19:41,942 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:41,943 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:41,943 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:41,943 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:41,944 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:41,960 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:42,727 INFO L146 ILogger]: Checked inductivity of 568 backedges. 0 proven. 568 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:42,728 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:42,728 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 11:19:42,737 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:19:42,765 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:19:42,765 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:42,766 INFO L146 ILogger]: Trace formula consists of 180 conjuncts, 38 conjunts are in the unsatisfiable core [2019-05-23 11:19:42,768 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:42,803 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:19:42,803 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:42,811 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:42,812 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:42,812 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2019-05-23 11:19:43,242 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:43,243 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 48 [2019-05-23 11:19:43,244 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:43,261 INFO L146 ILogger]: treesize reduction 24, result has 50.0 percent of original size [2019-05-23 11:19:43,261 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:43,262 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:24 [2019-05-23 11:19:43,796 INFO L146 ILogger]: treesize reduction 10, result has 73.0 percent of original size [2019-05-23 11:19:43,797 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2019-05-23 11:19:43,801 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-05-23 11:19:43,851 INFO L146 ILogger]: treesize reduction 37, result has 24.5 percent of original size [2019-05-23 11:19:43,851 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 11:19:43,851 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:44, output treesize:12 [2019-05-23 11:19:44,000 INFO L146 ILogger]: Checked inductivity of 568 backedges. 207 proven. 357 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-05-23 11:19:44,018 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:44,019 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 33] total 58 [2019-05-23 11:19:44,019 INFO L146 ILogger]: Interpolant automaton has 58 states [2019-05-23 11:19:44,019 INFO L146 ILogger]: Constructing interpolant automaton starting with 58 interpolants. [2019-05-23 11:19:44,020 INFO L146 ILogger]: CoverageRelationStatistics Valid=324, Invalid=2982, Unknown=0, NotChecked=0, Total=3306 [2019-05-23 11:19:44,020 INFO L146 ILogger]: Start difference. First operand 745 states and 813 transitions. Second operand 58 states. [2019-05-23 11:20:05,405 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:05,405 INFO L146 ILogger]: Finished difference Result 2422 states and 2650 transitions. [2019-05-23 11:20:05,406 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 407 states. [2019-05-23 11:20:05,406 INFO L146 ILogger]: Start accepts. Automaton has 58 states. Word has length 132 [2019-05-23 11:20:05,406 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:05,415 INFO L146 ILogger]: With dead ends: 2422 [2019-05-23 11:20:05,415 INFO L146 ILogger]: Without dead ends: 2384 [2019-05-23 11:20:05,426 INFO L146 ILogger]: 0 DeclaredPredicates, 534 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 432 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79096 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=16780, Invalid=171142, Unknown=0, NotChecked=0, Total=187922 [2019-05-23 11:20:05,428 INFO L146 ILogger]: Start minimizeSevpa. Operand 2384 states. [2019-05-23 11:20:05,458 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 2384 to 1181. [2019-05-23 11:20:05,458 INFO L146 ILogger]: Start removeUnreachable. Operand 1181 states. [2019-05-23 11:20:05,460 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1299 transitions. [2019-05-23 11:20:05,460 INFO L146 ILogger]: Start accepts. Automaton has 1181 states and 1299 transitions. Word has length 132 [2019-05-23 11:20:05,461 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:05,461 INFO L146 ILogger]: Abstraction has 1181 states and 1299 transitions. [2019-05-23 11:20:05,461 INFO L146 ILogger]: Interpolant automaton has 58 states. [2019-05-23 11:20:05,461 INFO L146 ILogger]: Start isEmpty. Operand 1181 states and 1299 transitions. [2019-05-23 11:20:05,464 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 142 [2019-05-23 11:20:05,464 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:05,465 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 11, 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] [2019-05-23 11:20:05,465 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:05,465 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:05,465 INFO L146 ILogger]: Analyzing trace with hash -1044077484, now seen corresponding path program 11 times [2019-05-23 11:20:05,466 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:05,466 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:05,466 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:05,467 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:05,467 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:05,490 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:05,918 INFO L146 ILogger]: Checked inductivity of 673 backedges. 0 proven. 673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:05,918 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:05,918 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:20:05,929 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:05,996 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2019-05-23 11:20:05,996 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:05,997 INFO L146 ILogger]: Trace formula consists of 230 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:20:06,000 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:06,054 INFO L146 ILogger]: Checked inductivity of 673 backedges. 0 proven. 673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:06,072 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:06,073 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2019-05-23 11:20:06,073 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:20:06,074 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:20:06,074 INFO L146 ILogger]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:20:06,074 INFO L146 ILogger]: Start difference. First operand 1181 states and 1299 transitions. Second operand 31 states. [2019-05-23 11:20:06,886 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:06,887 INFO L146 ILogger]: Finished difference Result 1491 states and 1653 transitions. [2019-05-23 11:20:06,887 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-05-23 11:20:06,887 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 141 [2019-05-23 11:20:06,888 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:06,892 INFO L146 ILogger]: With dead ends: 1491 [2019-05-23 11:20:06,892 INFO L146 ILogger]: Without dead ends: 1453 [2019-05-23 11:20:06,893 INFO L146 ILogger]: 0 DeclaredPredicates, 195 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2019-05-23 11:20:06,895 INFO L146 ILogger]: Start minimizeSevpa. Operand 1453 states. [2019-05-23 11:20:06,920 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 1453 to 1238. [2019-05-23 11:20:06,920 INFO L146 ILogger]: Start removeUnreachable. Operand 1238 states. [2019-05-23 11:20:06,923 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1361 transitions. [2019-05-23 11:20:06,923 INFO L146 ILogger]: Start accepts. Automaton has 1238 states and 1361 transitions. Word has length 141 [2019-05-23 11:20:06,923 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:06,924 INFO L146 ILogger]: Abstraction has 1238 states and 1361 transitions. [2019-05-23 11:20:06,924 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:20:06,924 INFO L146 ILogger]: Start isEmpty. Operand 1238 states and 1361 transitions. [2019-05-23 11:20:06,927 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 151 [2019-05-23 11:20:06,927 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:06,928 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 12, 12, 12, 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 11:20:06,928 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:06,928 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:06,928 INFO L146 ILogger]: Analyzing trace with hash 610056691, now seen corresponding path program 12 times [2019-05-23 11:20:06,928 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:06,928 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:06,929 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:06,929 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:06,929 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:06,948 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:07,664 INFO L146 ILogger]: Checked inductivity of 787 backedges. 0 proven. 787 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:07,665 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:07,665 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 11:20:07,676 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:20:07,708 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:20:07,708 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:07,709 INFO L146 ILogger]: Trace formula consists of 139 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:20:07,712 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:07,774 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:20:07,774 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:07,779 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:07,780 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:07,780 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2019-05-23 11:20:07,936 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:20:07,937 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2019-05-23 11:20:07,937 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:07,944 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:07,944 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 11:20:07,945 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:14 [2019-05-23 11:20:08,040 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:20:08,042 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:08,042 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 17 treesize of output 10 [2019-05-23 11:20:08,043 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:08,051 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:08,052 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 11:20:08,052 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:13 [2019-05-23 11:20:08,175 INFO L146 ILogger]: Checked inductivity of 787 backedges. 0 proven. 415 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2019-05-23 11:20:08,194 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:08,195 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 15] total 44 [2019-05-23 11:20:08,195 INFO L146 ILogger]: Interpolant automaton has 44 states [2019-05-23 11:20:08,195 INFO L146 ILogger]: Constructing interpolant automaton starting with 44 interpolants. [2019-05-23 11:20:08,196 INFO L146 ILogger]: CoverageRelationStatistics Valid=295, Invalid=1597, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:20:08,196 INFO L146 ILogger]: Start difference. First operand 1238 states and 1361 transitions. Second operand 44 states.