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_copy5_false-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:14:16,281 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:14:16,283 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:14:16,302 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:14:16,303 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:14:16,304 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:14:16,305 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:14:16,308 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:14:16,311 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:14:16,318 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:14:16,319 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:14:16,319 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:14:16,322 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:14:16,326 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:14:16,327 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:14:16,329 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:14:16,331 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:14:16,333 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:14:16,339 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:14:16,342 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:14:16,343 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:14:16,345 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:14:16,346 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:14:16,348 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:14:16,348 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:14:16,349 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:14:16,349 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:14:16,350 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:14:16,351 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:14:16,351 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:14:16,353 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:14:16,354 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:14:16,356 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:14:16,356 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:14:16,357 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:14:16,357 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:14:16,357 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:14:16,358 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:14:16,360 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:14:16,361 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:14:16,385 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:14:16,385 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:14:16,388 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:14:16,388 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:14:16,389 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:14:16,389 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:14:16,389 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:14:16,389 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:14:16,389 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:14:16,390 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:14:16,390 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:14:16,390 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:14:16,390 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:14:16,391 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:14:16,391 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:14:16,391 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:14:16,391 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:14:16,392 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:14:16,392 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:14:16,392 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:14:16,392 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:14:16,392 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:14:16,393 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:14:16,394 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:14:16,394 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:14:16,395 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:14:16,395 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:14:16,395 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:14:16,395 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 11:14:16,453 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:14:16,474 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:14:16,480 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:14:16,482 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:14:16,482 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:14:16,483 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_copy5_false-unreach-call_ground.i [2019-05-23 11:14:16,547 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae5d15ad5/e42898de91fb4987bc26f2b5b1c68202/FLAGf6572dab9 [2019-05-23 11:14:17,022 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:14:17,023 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_copy5_false-unreach-call_ground.i [2019-05-23 11:14:17,029 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae5d15ad5/e42898de91fb4987bc26f2b5b1c68202/FLAGf6572dab9 [2019-05-23 11:14:17,381 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae5d15ad5/e42898de91fb4987bc26f2b5b1c68202 [2019-05-23 11:14:17,392 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:14:17,393 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:14:17,394 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:14:17,395 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:14:17,398 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:14:17,399 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,402 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62b69f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17, skipping insertion in model container [2019-05-23 11:14:17,402 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,410 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:14:17,431 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:14:17,635 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:14:17,640 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:14:17,670 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:14:17,693 INFO L146 ILogger]: Completed translation [2019-05-23 11:14:17,693 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17 WrapperNode [2019-05-23 11:14:17,694 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:14:17,694 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:14:17,695 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:14:17,695 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:14:17,703 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,714 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,740 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:14:17,741 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:14:17,741 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:14:17,741 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:14:17,750 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,750 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,753 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,753 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,761 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,857 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,863 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,866 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:14:17,866 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:14:17,866 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:14:17,866 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:14:17,867 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (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 11:14:17,914 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:14:17,914 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:14:17,914 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:14:17,914 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:14:17,915 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:14:17,915 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:14:18,532 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:14:18,533 INFO L146 ILogger]: Removed 13 assume(true) statements. [2019-05-23 11:14:18,535 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:14:18 BoogieIcfgContainer [2019-05-23 11:14:18,535 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:14:18,536 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:14:18,536 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:14:18,540 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:14:18,540 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:14:17" (1/3) ... [2019-05-23 11:14:18,541 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2850dbfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:14:18, skipping insertion in model container [2019-05-23 11:14:18,541 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (2/3) ... [2019-05-23 11:14:18,542 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2850dbfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:14:18, skipping insertion in model container [2019-05-23 11:14:18,543 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:14:18" (3/3) ... [2019-05-23 11:14:18,545 INFO L146 ILogger]: Analyzing ICFG standard_copy5_false-unreach-call_ground.i [2019-05-23 11:14:18,558 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:14:18,567 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:14:18,583 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:14:18,614 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:14:18,615 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:14:18,615 INFO L146 ILogger]: Hoare is true [2019-05-23 11:14:18,615 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:14:18,615 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:14:18,616 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:14:18,616 INFO L146 ILogger]: Difference is false [2019-05-23 11:14:18,616 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:14:18,616 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:14:18,632 INFO L146 ILogger]: Start isEmpty. Operand 95 states. [2019-05-23 11:14:18,640 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 35 [2019-05-23 11:14:18,641 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:18,642 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:18,644 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:18,648 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:18,649 INFO L146 ILogger]: Analyzing trace with hash -535257703, now seen corresponding path program 1 times [2019-05-23 11:14:18,650 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:18,651 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:18,692 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:18,693 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:18,693 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:18,740 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:18,789 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 11:14:18,792 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:14:18,793 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:14:18,799 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:14:18,810 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:14:18,811 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:14:18,812 INFO L146 ILogger]: Start difference. First operand 95 states. Second operand 2 states. [2019-05-23 11:14:18,838 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:18,838 INFO L146 ILogger]: Finished difference Result 168 states and 194 transitions. [2019-05-23 11:14:18,838 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:14:18,840 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 34 [2019-05-23 11:14:18,840 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:18,851 INFO L146 ILogger]: With dead ends: 168 [2019-05-23 11:14:18,851 INFO L146 ILogger]: Without dead ends: 79 [2019-05-23 11:14:18,855 INFO L146 ILogger]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:14:18,872 INFO L146 ILogger]: Start minimizeSevpa. Operand 79 states. [2019-05-23 11:14:18,890 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 79 to 79. [2019-05-23 11:14:18,892 INFO L146 ILogger]: Start removeUnreachable. Operand 79 states. [2019-05-23 11:14:18,894 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 79 states to 79 states and 85 transitions. [2019-05-23 11:14:18,896 INFO L146 ILogger]: Start accepts. Automaton has 79 states and 85 transitions. Word has length 34 [2019-05-23 11:14:18,896 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:18,896 INFO L146 ILogger]: Abstraction has 79 states and 85 transitions. [2019-05-23 11:14:18,897 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:14:18,897 INFO L146 ILogger]: Start isEmpty. Operand 79 states and 85 transitions. [2019-05-23 11:14:18,898 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 35 [2019-05-23 11:14:18,898 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:18,899 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:18,899 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:18,899 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:18,900 INFO L146 ILogger]: Analyzing trace with hash -186094469, now seen corresponding path program 1 times [2019-05-23 11:14:18,900 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:18,900 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:18,901 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:18,901 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:18,902 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:18,921 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:18,970 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 11:14:18,970 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:14:18,970 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:14:18,972 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:14:18,973 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:14:18,974 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:14:18,974 INFO L146 ILogger]: Start difference. First operand 79 states and 85 transitions. Second operand 3 states. [2019-05-23 11:14:19,077 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:19,077 INFO L146 ILogger]: Finished difference Result 145 states and 157 transitions. [2019-05-23 11:14:19,078 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:14:19,078 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 34 [2019-05-23 11:14:19,078 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:19,080 INFO L146 ILogger]: With dead ends: 145 [2019-05-23 11:14:19,080 INFO L146 ILogger]: Without dead ends: 88 [2019-05-23 11:14:19,081 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 11:14:19,082 INFO L146 ILogger]: Start minimizeSevpa. Operand 88 states. [2019-05-23 11:14:19,090 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 88 to 80. [2019-05-23 11:14:19,090 INFO L146 ILogger]: Start removeUnreachable. Operand 80 states. [2019-05-23 11:14:19,092 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 80 states to 80 states and 86 transitions. [2019-05-23 11:14:19,092 INFO L146 ILogger]: Start accepts. Automaton has 80 states and 86 transitions. Word has length 34 [2019-05-23 11:14:19,093 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:19,093 INFO L146 ILogger]: Abstraction has 80 states and 86 transitions. [2019-05-23 11:14:19,093 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:14:19,093 INFO L146 ILogger]: Start isEmpty. Operand 80 states and 86 transitions. [2019-05-23 11:14:19,095 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 45 [2019-05-23 11:14:19,095 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:19,095 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:19,096 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:19,096 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:19,096 INFO L146 ILogger]: Analyzing trace with hash -1993277535, now seen corresponding path program 1 times [2019-05-23 11:14:19,096 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:19,097 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:19,098 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:19,098 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:19,098 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:19,121 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:19,353 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 11:14:19,353 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:19,353 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 11:14:19,370 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:19,419 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:19,421 INFO L146 ILogger]: Trace formula consists of 107 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:14:19,428 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:19,477 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:14:19,502 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:14:19,502 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:14:19,503 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:14:19,503 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:14:19,504 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:14:19,504 INFO L146 ILogger]: Start difference. First operand 80 states and 86 transitions. Second operand 6 states. [2019-05-23 11:14:20,089 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:20,089 INFO L146 ILogger]: Finished difference Result 185 states and 202 transitions. [2019-05-23 11:14:20,090 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:14:20,090 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 44 [2019-05-23 11:14:20,091 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:20,093 INFO L146 ILogger]: With dead ends: 185 [2019-05-23 11:14:20,093 INFO L146 ILogger]: Without dead ends: 128 [2019-05-23 11:14:20,094 INFO L146 ILogger]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:14:20,095 INFO L146 ILogger]: Start minimizeSevpa. Operand 128 states. [2019-05-23 11:14:20,102 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 128 to 95. [2019-05-23 11:14:20,103 INFO L146 ILogger]: Start removeUnreachable. Operand 95 states. [2019-05-23 11:14:20,104 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 95 states to 95 states and 101 transitions. [2019-05-23 11:14:20,104 INFO L146 ILogger]: Start accepts. Automaton has 95 states and 101 transitions. Word has length 44 [2019-05-23 11:14:20,104 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:20,104 INFO L146 ILogger]: Abstraction has 95 states and 101 transitions. [2019-05-23 11:14:20,105 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:14:20,105 INFO L146 ILogger]: Start isEmpty. Operand 95 states and 101 transitions. [2019-05-23 11:14:20,107 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 90 [2019-05-23 11:14:20,108 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:20,108 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:14:20,108 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:20,108 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:20,109 INFO L146 ILogger]: Analyzing trace with hash 1356146406, now seen corresponding path program 1 times [2019-05-23 11:14:20,109 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:20,109 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:20,110 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:20,110 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:20,110 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:20,138 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:20,220 INFO L146 ILogger]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-05-23 11:14:20,220 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:20,221 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 11:14:20,238 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:20,287 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:20,288 INFO L146 ILogger]: Trace formula consists of 171 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:14:20,292 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:20,694 INFO L146 ILogger]: Checked inductivity of 17 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-05-23 11:14:20,712 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:20,713 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2019-05-23 11:14:20,713 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:14:20,714 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:14:20,714 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:14:20,714 INFO L146 ILogger]: Start difference. First operand 95 states and 101 transitions. Second operand 10 states. [2019-05-23 11:14:21,303 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:21,304 INFO L146 ILogger]: Finished difference Result 207 states and 220 transitions. [2019-05-23 11:14:21,305 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:14:21,305 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 89 [2019-05-23 11:14:21,306 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:21,307 INFO L146 ILogger]: With dead ends: 207 [2019-05-23 11:14:21,307 INFO L146 ILogger]: Without dead ends: 145 [2019-05-23 11:14:21,308 INFO L146 ILogger]: 0 DeclaredPredicates, 99 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:14:21,309 INFO L146 ILogger]: Start minimizeSevpa. Operand 145 states. [2019-05-23 11:14:21,317 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 145 to 112. [2019-05-23 11:14:21,317 INFO L146 ILogger]: Start removeUnreachable. Operand 112 states. [2019-05-23 11:14:21,318 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 112 states to 112 states and 118 transitions. [2019-05-23 11:14:21,318 INFO L146 ILogger]: Start accepts. Automaton has 112 states and 118 transitions. Word has length 89 [2019-05-23 11:14:21,318 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:21,319 INFO L146 ILogger]: Abstraction has 112 states and 118 transitions. [2019-05-23 11:14:21,319 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:14:21,319 INFO L146 ILogger]: Start isEmpty. Operand 112 states and 118 transitions. [2019-05-23 11:14:21,320 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 107 [2019-05-23 11:14:21,321 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:21,321 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:14:21,321 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:21,322 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:21,322 INFO L146 ILogger]: Analyzing trace with hash -760617317, now seen corresponding path program 2 times [2019-05-23 11:14:21,322 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:21,322 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:21,323 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:21,323 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:21,324 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:21,356 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:21,628 INFO L146 ILogger]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-05-23 11:14:21,629 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:21,629 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 11:14:21,648 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:14:21,711 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:14:21,711 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:21,713 INFO L146 ILogger]: Trace formula consists of 195 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:14:21,722 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:22,180 INFO L146 ILogger]: Checked inductivity of 46 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-05-23 11:14:22,202 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:22,202 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 12 [2019-05-23 11:14:22,202 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:14:22,203 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:14:22,203 INFO L146 ILogger]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:14:22,203 INFO L146 ILogger]: Start difference. First operand 112 states and 118 transitions. Second operand 12 states. [2019-05-23 11:14:22,996 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:22,997 INFO L146 ILogger]: Finished difference Result 226 states and 239 transitions. [2019-05-23 11:14:22,997 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:14:22,997 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 106 [2019-05-23 11:14:22,998 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:23,000 INFO L146 ILogger]: With dead ends: 226 [2019-05-23 11:14:23,000 INFO L146 ILogger]: Without dead ends: 157 [2019-05-23 11:14:23,002 INFO L146 ILogger]: 0 DeclaredPredicates, 118 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:14:23,003 INFO L146 ILogger]: Start minimizeSevpa. Operand 157 states. [2019-05-23 11:14:23,010 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 157 to 129. [2019-05-23 11:14:23,011 INFO L146 ILogger]: Start removeUnreachable. Operand 129 states. [2019-05-23 11:14:23,011 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 129 states to 129 states and 135 transitions. [2019-05-23 11:14:23,011 INFO L146 ILogger]: Start accepts. Automaton has 129 states and 135 transitions. Word has length 106 [2019-05-23 11:14:23,012 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:23,012 INFO L146 ILogger]: Abstraction has 129 states and 135 transitions. [2019-05-23 11:14:23,012 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:14:23,012 INFO L146 ILogger]: Start isEmpty. Operand 129 states and 135 transitions. [2019-05-23 11:14:23,014 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 124 [2019-05-23 11:14:23,014 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:23,015 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:14:23,015 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:23,015 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:23,015 INFO L146 ILogger]: Analyzing trace with hash -1038779487, now seen corresponding path program 3 times [2019-05-23 11:14:23,015 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:23,016 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:23,017 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:23,017 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:23,017 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:23,045 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:23,204 INFO L146 ILogger]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-05-23 11:14:23,204 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:23,205 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:14:23,214 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:14:23,271 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:14:23,271 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:23,272 INFO L146 ILogger]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:14:23,277 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:23,363 INFO L146 ILogger]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-05-23 11:14:23,385 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:23,386 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:14:23,386 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:14:23,386 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:14:23,387 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:14:23,387 INFO L146 ILogger]: Start difference. First operand 129 states and 135 transitions. Second operand 7 states. [2019-05-23 11:14:23,586 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:23,586 INFO L146 ILogger]: Finished difference Result 185 states and 194 transitions. [2019-05-23 11:14:23,587 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:14:23,587 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 123 [2019-05-23 11:14:23,588 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:23,590 INFO L146 ILogger]: With dead ends: 185 [2019-05-23 11:14:23,590 INFO L146 ILogger]: Without dead ends: 151 [2019-05-23 11:14:23,591 INFO L146 ILogger]: 0 DeclaredPredicates, 129 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:14:23,592 INFO L146 ILogger]: Start minimizeSevpa. Operand 151 states. [2019-05-23 11:14:23,599 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 151 to 136. [2019-05-23 11:14:23,599 INFO L146 ILogger]: Start removeUnreachable. Operand 136 states. [2019-05-23 11:14:23,600 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 136 states to 136 states and 142 transitions. [2019-05-23 11:14:23,600 INFO L146 ILogger]: Start accepts. Automaton has 136 states and 142 transitions. Word has length 123 [2019-05-23 11:14:23,601 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:23,601 INFO L146 ILogger]: Abstraction has 136 states and 142 transitions. [2019-05-23 11:14:23,601 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:14:23,601 INFO L146 ILogger]: Start isEmpty. Operand 136 states and 142 transitions. [2019-05-23 11:14:23,603 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 131 [2019-05-23 11:14:23,603 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:23,603 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:23,604 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:23,604 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:23,604 INFO L146 ILogger]: Analyzing trace with hash 148944122, now seen corresponding path program 4 times [2019-05-23 11:14:23,604 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:23,604 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:23,605 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:23,605 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:23,605 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:23,628 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:23,723 INFO L146 ILogger]: Checked inductivity of 93 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-05-23 11:14:23,723 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:23,723 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 11:14:23,732 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:14:23,830 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:14:23,830 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:23,832 INFO L146 ILogger]: Trace formula consists of 229 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:14:23,837 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:23,965 INFO L146 ILogger]: Checked inductivity of 93 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-05-23 11:14:23,984 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:23,985 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11] total 14 [2019-05-23 11:14:23,985 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:14:23,985 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:14:23,986 INFO L146 ILogger]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:14:23,986 INFO L146 ILogger]: Start difference. First operand 136 states and 142 transitions. Second operand 14 states. [2019-05-23 11:14:24,544 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:24,545 INFO L146 ILogger]: Finished difference Result 254 states and 267 transitions. [2019-05-23 11:14:24,545 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:14:24,545 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 130 [2019-05-23 11:14:24,546 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:24,547 INFO L146 ILogger]: With dead ends: 254 [2019-05-23 11:14:24,547 INFO L146 ILogger]: Without dead ends: 171 [2019-05-23 11:14:24,548 INFO L146 ILogger]: 0 DeclaredPredicates, 144 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:14:24,548 INFO L146 ILogger]: Start minimizeSevpa. Operand 171 states. [2019-05-23 11:14:24,556 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 171 to 153. [2019-05-23 11:14:24,556 INFO L146 ILogger]: Start removeUnreachable. Operand 153 states. [2019-05-23 11:14:24,557 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 153 states to 153 states and 159 transitions. [2019-05-23 11:14:24,557 INFO L146 ILogger]: Start accepts. Automaton has 153 states and 159 transitions. Word has length 130 [2019-05-23 11:14:24,557 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:24,558 INFO L146 ILogger]: Abstraction has 153 states and 159 transitions. [2019-05-23 11:14:24,558 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:14:24,558 INFO L146 ILogger]: Start isEmpty. Operand 153 states and 159 transitions. [2019-05-23 11:14:24,560 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 148 [2019-05-23 11:14:24,560 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:24,560 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:24,561 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:24,561 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:24,561 INFO L146 ILogger]: Analyzing trace with hash 764736066, now seen corresponding path program 5 times [2019-05-23 11:14:24,561 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:24,561 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:24,562 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:24,562 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:24,562 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:24,599 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:24,819 INFO L146 ILogger]: Checked inductivity of 142 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2019-05-23 11:14:24,820 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:24,820 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 11:14:24,829 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:14:26,987 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-05-23 11:14:26,988 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:26,991 INFO L146 ILogger]: Trace formula consists of 253 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:14:26,995 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:27,054 INFO L146 ILogger]: Checked inductivity of 142 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2019-05-23 11:14:27,074 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:27,074 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:14:27,075 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:14:27,075 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:14:27,075 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:14:27,076 INFO L146 ILogger]: Start difference. First operand 153 states and 159 transitions. Second operand 7 states. [2019-05-23 11:14:27,321 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:27,321 INFO L146 ILogger]: Finished difference Result 181 states and 188 transitions. [2019-05-23 11:14:27,321 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:14:27,322 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 147 [2019-05-23 11:14:27,322 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:27,323 INFO L146 ILogger]: With dead ends: 181 [2019-05-23 11:14:27,323 INFO L146 ILogger]: Without dead ends: 165 [2019-05-23 11:14:27,324 INFO L146 ILogger]: 0 DeclaredPredicates, 153 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:14:27,324 INFO L146 ILogger]: Start minimizeSevpa. Operand 165 states. [2019-05-23 11:14:27,330 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 165 to 160. [2019-05-23 11:14:27,330 INFO L146 ILogger]: Start removeUnreachable. Operand 160 states. [2019-05-23 11:14:27,331 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 160 states to 160 states and 166 transitions. [2019-05-23 11:14:27,331 INFO L146 ILogger]: Start accepts. Automaton has 160 states and 166 transitions. Word has length 147 [2019-05-23 11:14:27,331 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:27,332 INFO L146 ILogger]: Abstraction has 160 states and 166 transitions. [2019-05-23 11:14:27,332 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:14:27,332 INFO L146 ILogger]: Start isEmpty. Operand 160 states and 166 transitions. [2019-05-23 11:14:27,334 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 155 [2019-05-23 11:14:27,334 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:27,334 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:27,335 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:27,335 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:27,335 INFO L146 ILogger]: Analyzing trace with hash -88060071, now seen corresponding path program 6 times [2019-05-23 11:14:27,335 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:27,335 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:27,336 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:27,336 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:27,336 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:27,362 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:27,555 INFO L146 ILogger]: Checked inductivity of 150 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-05-23 11:14:27,556 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:27,556 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 11:14:27,568 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:14:27,730 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:14:27,730 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:27,732 INFO L146 ILogger]: Trace formula consists of 249 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:14:27,735 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:27,915 INFO L146 ILogger]: Checked inductivity of 150 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2019-05-23 11:14:27,935 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:27,935 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7] total 18 [2019-05-23 11:14:27,936 INFO L146 ILogger]: Interpolant automaton has 18 states [2019-05-23 11:14:27,936 INFO L146 ILogger]: Constructing interpolant automaton starting with 18 interpolants. [2019-05-23 11:14:27,937 INFO L146 ILogger]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:14:27,937 INFO L146 ILogger]: Start difference. First operand 160 states and 166 transitions. Second operand 18 states. [2019-05-23 11:14:28,611 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:28,611 INFO L146 ILogger]: Finished difference Result 287 states and 300 transitions. [2019-05-23 11:14:28,612 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-05-23 11:14:28,612 INFO L146 ILogger]: Start accepts. Automaton has 18 states. Word has length 154 [2019-05-23 11:14:28,613 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:28,614 INFO L146 ILogger]: With dead ends: 287 [2019-05-23 11:14:28,614 INFO L146 ILogger]: Without dead ends: 190 [2019-05-23 11:14:28,615 INFO L146 ILogger]: 0 DeclaredPredicates, 180 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=220, Invalid=772, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:14:28,620 INFO L146 ILogger]: Start minimizeSevpa. Operand 190 states. [2019-05-23 11:14:28,624 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 190 to 177. [2019-05-23 11:14:28,625 INFO L146 ILogger]: Start removeUnreachable. Operand 177 states. [2019-05-23 11:14:28,625 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 177 states to 177 states and 183 transitions. [2019-05-23 11:14:28,626 INFO L146 ILogger]: Start accepts. Automaton has 177 states and 183 transitions. Word has length 154 [2019-05-23 11:14:28,626 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:28,626 INFO L146 ILogger]: Abstraction has 177 states and 183 transitions. [2019-05-23 11:14:28,626 INFO L146 ILogger]: Interpolant automaton has 18 states. [2019-05-23 11:14:28,626 INFO L146 ILogger]: Start isEmpty. Operand 177 states and 183 transitions. [2019-05-23 11:14:28,628 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 172 [2019-05-23 11:14:28,629 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:28,629 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:28,629 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:28,630 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:28,630 INFO L146 ILogger]: Analyzing trace with hash 564874464, now seen corresponding path program 7 times [2019-05-23 11:14:28,630 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:28,630 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:28,631 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:28,631 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:28,631 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:28,660 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:28,872 INFO L146 ILogger]: Checked inductivity of 216 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-05-23 11:14:28,873 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:28,873 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 11:14:28,884 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:28,924 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:28,925 INFO L146 ILogger]: Trace formula consists of 287 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:14:28,927 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:28,992 INFO L146 ILogger]: Checked inductivity of 216 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-05-23 11:14:29,010 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:29,011 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2019-05-23 11:14:29,011 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:14:29,011 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:14:29,012 INFO L146 ILogger]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:14:29,012 INFO L146 ILogger]: Start difference. First operand 177 states and 183 transitions. Second operand 17 states. [2019-05-23 11:14:29,267 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:29,267 INFO L146 ILogger]: Finished difference Result 299 states and 311 transitions. [2019-05-23 11:14:29,270 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:14:29,270 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 171 [2019-05-23 11:14:29,270 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:29,271 INFO L146 ILogger]: With dead ends: 299 [2019-05-23 11:14:29,272 INFO L146 ILogger]: Without dead ends: 195 [2019-05-23 11:14:29,273 INFO L146 ILogger]: 0 DeclaredPredicates, 197 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:14:29,274 INFO L146 ILogger]: Start minimizeSevpa. Operand 195 states. [2019-05-23 11:14:29,278 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 195 to 187. [2019-05-23 11:14:29,279 INFO L146 ILogger]: Start removeUnreachable. Operand 187 states. [2019-05-23 11:14:29,283 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 187 states to 187 states and 193 transitions. [2019-05-23 11:14:29,283 INFO L146 ILogger]: Start accepts. Automaton has 187 states and 193 transitions. Word has length 171 [2019-05-23 11:14:29,283 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:29,283 INFO L146 ILogger]: Abstraction has 187 states and 193 transitions. [2019-05-23 11:14:29,283 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:14:29,284 INFO L146 ILogger]: Start isEmpty. Operand 187 states and 193 transitions. [2019-05-23 11:14:29,286 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 182 [2019-05-23 11:14:29,286 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:29,287 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:29,287 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:29,287 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:29,287 INFO L146 ILogger]: Analyzing trace with hash -1112849286, now seen corresponding path program 8 times [2019-05-23 11:14:29,287 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:29,287 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:29,288 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:29,288 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:29,288 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:29,333 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:29,709 INFO L146 ILogger]: Checked inductivity of 277 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-05-23 11:14:29,709 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:29,709 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 11:14:29,721 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:14:29,782 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:14:29,782 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:29,784 INFO L146 ILogger]: Trace formula consists of 301 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:14:29,787 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:29,890 INFO L146 ILogger]: Checked inductivity of 277 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-05-23 11:14:29,920 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:29,921 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2019-05-23 11:14:29,921 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:14:29,922 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:14:29,923 INFO L146 ILogger]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:14:29,923 INFO L146 ILogger]: Start difference. First operand 187 states and 193 transitions. Second operand 19 states. [2019-05-23 11:14:30,297 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:30,297 INFO L146 ILogger]: Finished difference Result 309 states and 321 transitions. [2019-05-23 11:14:30,299 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:14:30,299 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 181 [2019-05-23 11:14:30,299 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:30,300 INFO L146 ILogger]: With dead ends: 309 [2019-05-23 11:14:30,300 INFO L146 ILogger]: Without dead ends: 205 [2019-05-23 11:14:30,301 INFO L146 ILogger]: 0 DeclaredPredicates, 211 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:14:30,301 INFO L146 ILogger]: Start minimizeSevpa. Operand 205 states. [2019-05-23 11:14:30,306 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 205 to 197. [2019-05-23 11:14:30,306 INFO L146 ILogger]: Start removeUnreachable. Operand 197 states. [2019-05-23 11:14:30,307 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 197 states to 197 states and 203 transitions. [2019-05-23 11:14:30,307 INFO L146 ILogger]: Start accepts. Automaton has 197 states and 203 transitions. Word has length 181 [2019-05-23 11:14:30,307 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:30,308 INFO L146 ILogger]: Abstraction has 197 states and 203 transitions. [2019-05-23 11:14:30,308 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:14:30,308 INFO L146 ILogger]: Start isEmpty. Operand 197 states and 203 transitions. [2019-05-23 11:14:30,310 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 192 [2019-05-23 11:14:30,310 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:30,310 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:30,310 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:30,311 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:30,311 INFO L146 ILogger]: Analyzing trace with hash -520748140, now seen corresponding path program 9 times [2019-05-23 11:14:30,311 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:30,311 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:30,312 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:30,312 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:30,312 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:30,334 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:30,596 INFO L146 ILogger]: Checked inductivity of 348 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-05-23 11:14:30,596 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:30,596 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 11:14:30,605 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:14:30,664 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:14:30,664 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:30,665 INFO L146 ILogger]: Trace formula consists of 221 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:14:30,668 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:30,756 INFO L146 ILogger]: Checked inductivity of 348 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2019-05-23 11:14:30,775 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:30,776 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 7] total 24 [2019-05-23 11:14:30,776 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:14:30,777 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:14:30,777 INFO L146 ILogger]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:14:30,777 INFO L146 ILogger]: Start difference. First operand 197 states and 203 transitions. Second operand 24 states. [2019-05-23 11:14:31,533 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:31,534 INFO L146 ILogger]: Finished difference Result 331 states and 344 transitions. [2019-05-23 11:14:31,534 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-05-23 11:14:31,534 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 191 [2019-05-23 11:14:31,535 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:31,536 INFO L146 ILogger]: With dead ends: 331 [2019-05-23 11:14:31,536 INFO L146 ILogger]: Without dead ends: 227 [2019-05-23 11:14:31,537 INFO L146 ILogger]: 0 DeclaredPredicates, 229 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=445, Invalid=1447, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:14:31,537 INFO L146 ILogger]: Start minimizeSevpa. Operand 227 states. [2019-05-23 11:14:31,541 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 227 to 214. [2019-05-23 11:14:31,542 INFO L146 ILogger]: Start removeUnreachable. Operand 214 states. [2019-05-23 11:14:31,542 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 214 states to 214 states and 220 transitions. [2019-05-23 11:14:31,543 INFO L146 ILogger]: Start accepts. Automaton has 214 states and 220 transitions. Word has length 191 [2019-05-23 11:14:31,543 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:31,543 INFO L146 ILogger]: Abstraction has 214 states and 220 transitions. [2019-05-23 11:14:31,543 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:14:31,543 INFO L146 ILogger]: Start isEmpty. Operand 214 states and 220 transitions. [2019-05-23 11:14:31,544 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 209 [2019-05-23 11:14:31,544 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:31,545 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:31,545 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:31,545 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:31,545 INFO L146 ILogger]: Analyzing trace with hash 1533102879, now seen corresponding path program 10 times [2019-05-23 11:14:31,545 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:31,546 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:31,546 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:31,546 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:31,547 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:31,571 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:32,543 INFO L146 ILogger]: Checked inductivity of 444 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-05-23 11:14:32,544 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:32,544 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 11:14:32,553 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:14:33,782 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:14:33,783 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:33,785 INFO L146 ILogger]: Trace formula consists of 339 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:14:33,788 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:33,872 INFO L146 ILogger]: Checked inductivity of 444 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-05-23 11:14:33,893 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:33,893 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-05-23 11:14:33,893 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:14:33,893 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:14:33,897 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:14:33,897 INFO L146 ILogger]: Start difference. First operand 214 states and 220 transitions. Second operand 23 states. [2019-05-23 11:14:34,245 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:34,246 INFO L146 ILogger]: Finished difference Result 343 states and 355 transitions. [2019-05-23 11:14:34,246 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:14:34,246 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 208 [2019-05-23 11:14:34,246 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:34,247 INFO L146 ILogger]: With dead ends: 343 [2019-05-23 11:14:34,247 INFO L146 ILogger]: Without dead ends: 232 [2019-05-23 11:14:34,248 INFO L146 ILogger]: 0 DeclaredPredicates, 246 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:14:34,249 INFO L146 ILogger]: Start minimizeSevpa. Operand 232 states. [2019-05-23 11:14:34,253 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 232 to 224. [2019-05-23 11:14:34,253 INFO L146 ILogger]: Start removeUnreachable. Operand 224 states. [2019-05-23 11:14:34,254 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 224 states to 224 states and 230 transitions. [2019-05-23 11:14:34,254 INFO L146 ILogger]: Start accepts. Automaton has 224 states and 230 transitions. Word has length 208 [2019-05-23 11:14:34,254 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:34,254 INFO L146 ILogger]: Abstraction has 224 states and 230 transitions. [2019-05-23 11:14:34,254 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:14:34,254 INFO L146 ILogger]: Start isEmpty. Operand 224 states and 230 transitions. [2019-05-23 11:14:34,255 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 219 [2019-05-23 11:14:34,256 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:34,256 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:34,256 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:34,256 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:34,256 INFO L146 ILogger]: Analyzing trace with hash -476976187, now seen corresponding path program 11 times [2019-05-23 11:14:34,256 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:34,257 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:34,257 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:34,257 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:34,257 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:34,280 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:34,560 INFO L146 ILogger]: Checked inductivity of 535 backedges. 0 proven. 460 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-05-23 11:14:34,560 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:34,561 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 11:14:34,569 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:14:51,606 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2019-05-23 11:14:51,606 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:51,620 INFO L146 ILogger]: Trace formula consists of 353 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:14:51,622 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:51,770 INFO L146 ILogger]: Checked inductivity of 535 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 511 trivial. 0 not checked. [2019-05-23 11:14:51,792 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:51,793 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 9] total 30 [2019-05-23 11:14:51,793 INFO L146 ILogger]: Interpolant automaton has 30 states [2019-05-23 11:14:51,793 INFO L146 ILogger]: Constructing interpolant automaton starting with 30 interpolants. [2019-05-23 11:14:51,794 INFO L146 ILogger]: CoverageRelationStatistics Valid=166, Invalid=704, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:14:51,794 INFO L146 ILogger]: Start difference. First operand 224 states and 230 transitions. Second operand 30 states. [2019-05-23 11:14:52,774 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:52,774 INFO L146 ILogger]: Finished difference Result 365 states and 378 transitions. [2019-05-23 11:14:52,775 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2019-05-23 11:14:52,775 INFO L146 ILogger]: Start accepts. Automaton has 30 states. Word has length 218 [2019-05-23 11:14:52,776 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:52,777 INFO L146 ILogger]: With dead ends: 365 [2019-05-23 11:14:52,777 INFO L146 ILogger]: Without dead ends: 254 [2019-05-23 11:14:52,780 INFO L146 ILogger]: 0 DeclaredPredicates, 266 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=680, Invalid=2400, Unknown=0, NotChecked=0, Total=3080 [2019-05-23 11:14:52,780 INFO L146 ILogger]: Start minimizeSevpa. Operand 254 states. [2019-05-23 11:14:52,785 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 254 to 241. [2019-05-23 11:14:52,785 INFO L146 ILogger]: Start removeUnreachable. Operand 241 states. [2019-05-23 11:14:52,786 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 241 states to 241 states and 247 transitions. [2019-05-23 11:14:52,786 INFO L146 ILogger]: Start accepts. Automaton has 241 states and 247 transitions. Word has length 218 [2019-05-23 11:14:52,786 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:52,786 INFO L146 ILogger]: Abstraction has 241 states and 247 transitions. [2019-05-23 11:14:52,787 INFO L146 ILogger]: Interpolant automaton has 30 states. [2019-05-23 11:14:52,787 INFO L146 ILogger]: Start isEmpty. Operand 241 states and 247 transitions. [2019-05-23 11:14:52,788 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 236 [2019-05-23 11:14:52,788 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:52,788 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:52,789 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:52,789 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:52,789 INFO L146 ILogger]: Analyzing trace with hash -2017028016, now seen corresponding path program 12 times [2019-05-23 11:14:52,789 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:52,789 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:52,790 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:52,790 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:52,790 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:52,818 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:53,796 INFO L146 ILogger]: Checked inductivity of 658 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2019-05-23 11:14:53,796 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:53,797 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 11:14:53,804 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:14:53,952 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:14:53,952 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:53,953 INFO L146 ILogger]: Trace formula consists of 249 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:14:53,956 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:54,166 INFO L146 ILogger]: Checked inductivity of 658 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2019-05-23 11:14:54,185 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:54,185 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 7] total 30 [2019-05-23 11:14:54,186 INFO L146 ILogger]: Interpolant automaton has 30 states [2019-05-23 11:14:54,186 INFO L146 ILogger]: Constructing interpolant automaton starting with 30 interpolants. [2019-05-23 11:14:54,187 INFO L146 ILogger]: CoverageRelationStatistics Valid=182, Invalid=688, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:14:54,187 INFO L146 ILogger]: Start difference. First operand 241 states and 247 transitions. Second operand 30 states. [2019-05-23 11:14:55,346 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:55,347 INFO L146 ILogger]: Finished difference Result 389 states and 402 transitions. [2019-05-23 11:14:55,347 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2019-05-23 11:14:55,347 INFO L146 ILogger]: Start accepts. Automaton has 30 states. Word has length 235 [2019-05-23 11:14:55,348 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:55,349 INFO L146 ILogger]: With dead ends: 389 [2019-05-23 11:14:55,349 INFO L146 ILogger]: Without dead ends: 271 [2019-05-23 11:14:55,351 INFO L146 ILogger]: 0 DeclaredPredicates, 285 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=760, Invalid=2320, Unknown=0, NotChecked=0, Total=3080 [2019-05-23 11:14:55,352 INFO L146 ILogger]: Start minimizeSevpa. Operand 271 states. [2019-05-23 11:14:55,356 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 271 to 258. [2019-05-23 11:14:55,356 INFO L146 ILogger]: Start removeUnreachable. Operand 258 states. [2019-05-23 11:14:55,357 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 258 states to 258 states and 264 transitions. [2019-05-23 11:14:55,357 INFO L146 ILogger]: Start accepts. Automaton has 258 states and 264 transitions. Word has length 235 [2019-05-23 11:14:55,357 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:55,357 INFO L146 ILogger]: Abstraction has 258 states and 264 transitions. [2019-05-23 11:14:55,357 INFO L146 ILogger]: Interpolant automaton has 30 states. [2019-05-23 11:14:55,358 INFO L146 ILogger]: Start isEmpty. Operand 258 states and 264 transitions. [2019-05-23 11:14:55,359 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 253 [2019-05-23 11:14:55,359 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:55,359 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:55,360 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:55,360 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:55,360 INFO L146 ILogger]: Analyzing trace with hash -1448945590, now seen corresponding path program 13 times [2019-05-23 11:14:55,360 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:55,360 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:55,361 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:55,361 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:55,361 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:55,383 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:55,789 INFO L146 ILogger]: Checked inductivity of 784 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-05-23 11:14:55,789 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:55,789 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 11:14:55,798 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:55,853 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:55,855 INFO L146 ILogger]: Trace formula consists of 401 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:14:55,858 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:55,955 INFO L146 ILogger]: Checked inductivity of 784 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-05-23 11:14:55,980 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:55,980 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2019-05-23 11:14:55,981 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:14:55,981 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:14:55,982 INFO L146 ILogger]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:14:55,982 INFO L146 ILogger]: Start difference. First operand 258 states and 264 transitions. Second operand 29 states. [2019-05-23 11:14:56,671 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:56,672 INFO L146 ILogger]: Finished difference Result 401 states and 413 transitions. [2019-05-23 11:14:56,673 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:14:56,673 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 252 [2019-05-23 11:14:56,673 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:56,675 INFO L146 ILogger]: With dead ends: 401 [2019-05-23 11:14:56,675 INFO L146 ILogger]: Without dead ends: 276 [2019-05-23 11:14:56,676 INFO L146 ILogger]: 0 DeclaredPredicates, 302 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2019-05-23 11:14:56,677 INFO L146 ILogger]: Start minimizeSevpa. Operand 276 states. [2019-05-23 11:14:56,681 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 276 to 268. [2019-05-23 11:14:56,682 INFO L146 ILogger]: Start removeUnreachable. Operand 268 states. [2019-05-23 11:14:56,682 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 268 states to 268 states and 274 transitions. [2019-05-23 11:14:56,683 INFO L146 ILogger]: Start accepts. Automaton has 268 states and 274 transitions. Word has length 252 [2019-05-23 11:14:56,683 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:56,683 INFO L146 ILogger]: Abstraction has 268 states and 274 transitions. [2019-05-23 11:14:56,683 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:14:56,683 INFO L146 ILogger]: Start isEmpty. Operand 268 states and 274 transitions. [2019-05-23 11:14:56,685 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 263 [2019-05-23 11:14:56,685 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:56,686 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:56,686 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:56,686 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:56,687 INFO L146 ILogger]: Analyzing trace with hash 1738643440, now seen corresponding path program 14 times [2019-05-23 11:14:56,687 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:56,687 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:56,688 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:56,688 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:56,688 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:56,716 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:57,720 INFO L146 ILogger]: Checked inductivity of 905 backedges. 0 proven. 793 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-05-23 11:14:57,721 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:57,721 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:14:57,730 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:14:57,814 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:14:57,814 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:57,816 INFO L146 ILogger]: Trace formula consists of 415 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:14:57,820 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:58,491 INFO L146 ILogger]: Checked inductivity of 905 backedges. 0 proven. 793 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-05-23 11:14:58,546 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:58,547 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2019-05-23 11:14:58,548 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:14:58,548 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:14:58,549 INFO L146 ILogger]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:14:58,549 INFO L146 ILogger]: Start difference. First operand 268 states and 274 transitions. Second operand 31 states. [2019-05-23 11:15:00,007 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:00,007 INFO L146 ILogger]: Finished difference Result 411 states and 423 transitions. [2019-05-23 11:15:00,007 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-05-23 11:15:00,007 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 262 [2019-05-23 11:15:00,008 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:00,009 INFO L146 ILogger]: With dead ends: 411 [2019-05-23 11:15:00,009 INFO L146 ILogger]: Without dead ends: 286 [2019-05-23 11:15:00,010 INFO L146 ILogger]: 0 DeclaredPredicates, 316 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2019-05-23 11:15:00,010 INFO L146 ILogger]: Start minimizeSevpa. Operand 286 states. [2019-05-23 11:15:00,014 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 286 to 278. [2019-05-23 11:15:00,015 INFO L146 ILogger]: Start removeUnreachable. Operand 278 states. [2019-05-23 11:15:00,015 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 278 states to 278 states and 284 transitions. [2019-05-23 11:15:00,016 INFO L146 ILogger]: Start accepts. Automaton has 278 states and 284 transitions. Word has length 262 [2019-05-23 11:15:00,016 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:00,016 INFO L146 ILogger]: Abstraction has 278 states and 284 transitions. [2019-05-23 11:15:00,016 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:15:00,016 INFO L146 ILogger]: Start isEmpty. Operand 278 states and 284 transitions. [2019-05-23 11:15:00,017 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 273 [2019-05-23 11:15:00,018 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:00,018 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:00,018 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:00,018 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:00,019 INFO L146 ILogger]: Analyzing trace with hash 1841922070, now seen corresponding path program 15 times [2019-05-23 11:15:00,019 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:00,019 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:00,019 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:00,020 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:00,020 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:00,042 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:01,084 INFO L146 ILogger]: Checked inductivity of 1036 backedges. 0 proven. 924 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-05-23 11:15:01,084 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:01,084 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:01,092 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:15:01,159 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:15:01,159 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:01,161 INFO L146 ILogger]: Trace formula consists of 221 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:15:01,164 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:01,345 INFO L146 ILogger]: Checked inductivity of 1036 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2019-05-23 11:15:01,371 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:01,371 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 7] total 36 [2019-05-23 11:15:01,372 INFO L146 ILogger]: Interpolant automaton has 36 states [2019-05-23 11:15:01,372 INFO L146 ILogger]: Constructing interpolant automaton starting with 36 interpolants. [2019-05-23 11:15:01,373 INFO L146 ILogger]: CoverageRelationStatistics Valid=269, Invalid=991, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:15:01,373 INFO L146 ILogger]: Start difference. First operand 278 states and 284 transitions. Second operand 36 states. [2019-05-23 11:15:03,409 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:03,410 INFO L146 ILogger]: Finished difference Result 433 states and 446 transitions. [2019-05-23 11:15:03,410 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2019-05-23 11:15:03,410 INFO L146 ILogger]: Start accepts. Automaton has 36 states. Word has length 272 [2019-05-23 11:15:03,411 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:03,413 INFO L146 ILogger]: With dead ends: 433 [2019-05-23 11:15:03,413 INFO L146 ILogger]: Without dead ends: 308 [2019-05-23 11:15:03,416 INFO L146 ILogger]: 0 DeclaredPredicates, 334 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1165, Invalid=3391, Unknown=0, NotChecked=0, Total=4556 [2019-05-23 11:15:03,416 INFO L146 ILogger]: Start minimizeSevpa. Operand 308 states. [2019-05-23 11:15:03,420 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 308 to 295. [2019-05-23 11:15:03,421 INFO L146 ILogger]: Start removeUnreachable. Operand 295 states. [2019-05-23 11:15:03,421 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 295 states to 295 states and 301 transitions. [2019-05-23 11:15:03,422 INFO L146 ILogger]: Start accepts. Automaton has 295 states and 301 transitions. Word has length 272 [2019-05-23 11:15:03,422 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:03,422 INFO L146 ILogger]: Abstraction has 295 states and 301 transitions. [2019-05-23 11:15:03,422 INFO L146 ILogger]: Interpolant automaton has 36 states. [2019-05-23 11:15:03,422 INFO L146 ILogger]: Start isEmpty. Operand 295 states and 301 transitions. [2019-05-23 11:15:03,424 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 290 [2019-05-23 11:15:03,424 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:03,424 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:03,424 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:03,425 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:03,425 INFO L146 ILogger]: Analyzing trace with hash 1938355103, now seen corresponding path program 16 times [2019-05-23 11:15:03,425 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:03,425 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:03,426 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:03,426 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:03,426 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:03,451 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:04,245 INFO L146 ILogger]: Checked inductivity of 1192 backedges. 0 proven. 1065 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2019-05-23 11:15:04,246 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:04,246 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:04,256 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:15:16,365 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:15:16,366 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:16,376 INFO L146 ILogger]: Trace formula consists of 453 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:15:16,379 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:16,478 INFO L146 ILogger]: Checked inductivity of 1192 backedges. 0 proven. 1065 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2019-05-23 11:15:16,500 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:16,501 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2019-05-23 11:15:16,501 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:15:16,502 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:15:16,502 INFO L146 ILogger]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:15:16,502 INFO L146 ILogger]: Start difference. First operand 295 states and 301 transitions. Second operand 35 states. [2019-05-23 11:15:17,401 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:17,402 INFO L146 ILogger]: Finished difference Result 445 states and 457 transitions. [2019-05-23 11:15:17,409 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-05-23 11:15:17,409 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 289 [2019-05-23 11:15:17,409 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:17,411 INFO L146 ILogger]: With dead ends: 445 [2019-05-23 11:15:17,411 INFO L146 ILogger]: Without dead ends: 313 [2019-05-23 11:15:17,413 INFO L146 ILogger]: 0 DeclaredPredicates, 351 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2019-05-23 11:15:17,413 INFO L146 ILogger]: Start minimizeSevpa. Operand 313 states. [2019-05-23 11:15:17,417 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 313 to 305. [2019-05-23 11:15:17,418 INFO L146 ILogger]: Start removeUnreachable. Operand 305 states. [2019-05-23 11:15:17,418 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 305 states to 305 states and 311 transitions. [2019-05-23 11:15:17,419 INFO L146 ILogger]: Start accepts. Automaton has 305 states and 311 transitions. Word has length 289 [2019-05-23 11:15:17,419 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:17,419 INFO L146 ILogger]: Abstraction has 305 states and 311 transitions. [2019-05-23 11:15:17,419 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:15:17,419 INFO L146 ILogger]: Start isEmpty. Operand 305 states and 311 transitions. [2019-05-23 11:15:17,421 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 300 [2019-05-23 11:15:17,421 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:17,421 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:17,421 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:17,422 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:17,422 INFO L146 ILogger]: Analyzing trace with hash -88661063, now seen corresponding path program 17 times [2019-05-23 11:15:17,422 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:17,422 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:17,423 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:17,423 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:17,423 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:17,457 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:18,026 INFO L146 ILogger]: Checked inductivity of 1343 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2019-05-23 11:15:18,026 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:18,026 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:18,038 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1