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-crafted/zero_sum_const_m5_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:30:02,462 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:30:02,464 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:30:02,478 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:30:02,478 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:30:02,481 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:30:02,483 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:30:02,485 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:30:02,488 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:30:02,490 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:30:02,497 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:30:02,500 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:30:02,501 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:30:02,502 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:30:02,503 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:30:02,504 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:30:02,506 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:30:02,510 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:30:02,515 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:30:02,518 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:30:02,519 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:30:02,520 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:30:02,526 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:30:02,526 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:30:02,526 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:30:02,527 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:30:02,528 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:30:02,529 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:30:02,531 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:30:02,531 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:30:02,533 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:30:02,534 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:30:02,534 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:30:02,536 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:30:02,537 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:30:02,538 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:30:02,538 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:30:02,539 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:30:02,541 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:30:02,542 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:30:02,565 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:30:02,565 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:30:02,567 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:30:02,567 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:30:02,567 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:30:02,567 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:30:02,568 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:30:02,568 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:30:02,568 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:30:02,568 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:30:02,568 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:30:02,569 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:30:02,569 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:30:02,569 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:30:02,569 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:30:02,569 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:30:02,570 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:30:02,570 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:30:02,570 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:30:02,570 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:30:02,570 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:30:02,571 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:30:02,571 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:30:02,571 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:30:02,571 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:30:02,572 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:30:02,572 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:30:02,572 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:30:02,572 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 11:30:02,628 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:30:02,640 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:30:02,645 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:30:02,646 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:30:02,647 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:30:02,647 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-crafted/zero_sum_const_m5_true-unreach-call.c [2019-05-23 11:30:02,710 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/839372dc0/4a2eb08267b84186a9d601131e57124b/FLAG38f1c4b8b [2019-05-23 11:30:03,146 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:30:03,146 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-crafted/zero_sum_const_m5_true-unreach-call.c [2019-05-23 11:30:03,152 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/839372dc0/4a2eb08267b84186a9d601131e57124b/FLAG38f1c4b8b [2019-05-23 11:30:03,528 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/839372dc0/4a2eb08267b84186a9d601131e57124b [2019-05-23 11:30:03,537 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:30:03,538 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:30:03,539 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:30:03,540 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:30:03,543 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:30:03,544 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:30:03" (1/1) ... [2019-05-23 11:30:03,547 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a625f7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:03, skipping insertion in model container [2019-05-23 11:30:03,547 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:30:03" (1/1) ... [2019-05-23 11:30:03,554 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:30:03,576 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:30:03,830 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:30:03,841 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:30:03,891 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:30:03,918 INFO L146 ILogger]: Completed translation [2019-05-23 11:30:03,918 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:03 WrapperNode [2019-05-23 11:30:03,919 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:30:03,920 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:30:03,920 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:30:03,921 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:30:03,931 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:03" (1/1) ... [2019-05-23 11:30:03,947 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:03" (1/1) ... [2019-05-23 11:30:03,984 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:30:03,984 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:30:03,984 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:30:03,985 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:30:04,081 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:03" (1/1) ... [2019-05-23 11:30:04,081 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:03" (1/1) ... [2019-05-23 11:30:04,084 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:03" (1/1) ... [2019-05-23 11:30:04,084 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:03" (1/1) ... [2019-05-23 11:30:04,091 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:03" (1/1) ... [2019-05-23 11:30:04,099 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:03" (1/1) ... [2019-05-23 11:30:04,101 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:03" (1/1) ... [2019-05-23 11:30:04,103 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:30:04,104 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:30:04,104 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:30:04,104 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:30:04,105 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:03" (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 11:30:04,170 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:30:04,171 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:30:04,171 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:30:04,171 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:30:04,171 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:30:04,171 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:30:04,896 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:30:04,896 INFO L146 ILogger]: Removed 17 assume(true) statements. [2019-05-23 11:30:04,897 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:30:04 BoogieIcfgContainer [2019-05-23 11:30:04,898 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:30:04,898 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:30:04,899 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:30:04,902 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:30:04,902 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:30:03" (1/3) ... [2019-05-23 11:30:04,903 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2c9c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:30:04, skipping insertion in model container [2019-05-23 11:30:04,903 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:03" (2/3) ... [2019-05-23 11:30:04,904 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2c9c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:30:04, skipping insertion in model container [2019-05-23 11:30:04,904 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:30:04" (3/3) ... [2019-05-23 11:30:04,906 INFO L146 ILogger]: Analyzing ICFG zero_sum_const_m5_true-unreach-call.c [2019-05-23 11:30:04,914 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:30:04,921 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:30:04,938 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:30:04,971 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:30:04,971 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:30:04,972 INFO L146 ILogger]: Hoare is true [2019-05-23 11:30:04,972 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:30:04,973 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:30:04,974 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:30:04,974 INFO L146 ILogger]: Difference is false [2019-05-23 11:30:04,974 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:30:04,974 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:30:04,991 INFO L146 ILogger]: Start isEmpty. Operand 110 states. [2019-05-23 11:30:04,999 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 40 [2019-05-23 11:30:05,000 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:05,001 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] [2019-05-23 11:30:05,002 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:05,008 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:05,008 INFO L146 ILogger]: Analyzing trace with hash 234678719, now seen corresponding path program 1 times [2019-05-23 11:30:05,010 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:05,011 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:05,063 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:05,063 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:05,064 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:05,105 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:05,148 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 11:30:05,151 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:30:05,153 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:30:05,157 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:30:05,170 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:30:05,171 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:30:05,174 INFO L146 ILogger]: Start difference. First operand 110 states. Second operand 2 states. [2019-05-23 11:30:05,201 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:05,201 INFO L146 ILogger]: Finished difference Result 202 states and 245 transitions. [2019-05-23 11:30:05,202 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:30:05,203 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 39 [2019-05-23 11:30:05,203 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:05,214 INFO L146 ILogger]: With dead ends: 202 [2019-05-23 11:30:05,214 INFO L146 ILogger]: Without dead ends: 104 [2019-05-23 11:30:05,218 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 11:30:05,233 INFO L146 ILogger]: Start minimizeSevpa. Operand 104 states. [2019-05-23 11:30:05,255 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 104 to 104. [2019-05-23 11:30:05,256 INFO L146 ILogger]: Start removeUnreachable. Operand 104 states. [2019-05-23 11:30:05,259 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 104 states to 104 states and 114 transitions. [2019-05-23 11:30:05,260 INFO L146 ILogger]: Start accepts. Automaton has 104 states and 114 transitions. Word has length 39 [2019-05-23 11:30:05,261 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:05,261 INFO L146 ILogger]: Abstraction has 104 states and 114 transitions. [2019-05-23 11:30:05,261 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:30:05,261 INFO L146 ILogger]: Start isEmpty. Operand 104 states and 114 transitions. [2019-05-23 11:30:05,263 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 40 [2019-05-23 11:30:05,263 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:05,264 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] [2019-05-23 11:30:05,264 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:05,264 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:05,264 INFO L146 ILogger]: Analyzing trace with hash 217400599, now seen corresponding path program 1 times [2019-05-23 11:30:05,265 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:05,265 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:05,266 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:05,266 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:05,266 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:05,297 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:05,512 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 11:30:05,512 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:30:05,512 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:30:05,514 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:30:05,515 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:30:05,515 INFO L146 ILogger]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:30:05,515 INFO L146 ILogger]: Start difference. First operand 104 states and 114 transitions. Second operand 5 states. [2019-05-23 11:30:05,747 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:05,747 INFO L146 ILogger]: Finished difference Result 149 states and 168 transitions. [2019-05-23 11:30:05,747 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:30:05,748 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 39 [2019-05-23 11:30:05,748 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:05,751 INFO L146 ILogger]: With dead ends: 149 [2019-05-23 11:30:05,751 INFO L146 ILogger]: Without dead ends: 143 [2019-05-23 11:30:05,753 INFO L146 ILogger]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:30:05,753 INFO L146 ILogger]: Start minimizeSevpa. Operand 143 states. [2019-05-23 11:30:05,765 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 143 to 123. [2019-05-23 11:30:05,766 INFO L146 ILogger]: Start removeUnreachable. Operand 123 states. [2019-05-23 11:30:05,768 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2019-05-23 11:30:05,768 INFO L146 ILogger]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 39 [2019-05-23 11:30:05,768 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:05,768 INFO L146 ILogger]: Abstraction has 123 states and 142 transitions. [2019-05-23 11:30:05,769 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:30:05,769 INFO L146 ILogger]: Start isEmpty. Operand 123 states and 142 transitions. [2019-05-23 11:30:05,771 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 47 [2019-05-23 11:30:05,771 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:05,771 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:05,771 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:05,772 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:05,772 INFO L146 ILogger]: Analyzing trace with hash 2053163274, now seen corresponding path program 1 times [2019-05-23 11:30:05,772 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:05,772 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:05,773 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:05,773 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:05,773 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:05,790 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:05,889 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 11:30:05,889 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:05,890 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 11:30:05,906 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:05,940 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:05,941 INFO L146 ILogger]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:30:05,948 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:06,016 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 11:30:06,036 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:30:06,036 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2019-05-23 11:30:06,036 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:30:06,037 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:30:06,037 INFO L146 ILogger]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:30:06,037 INFO L146 ILogger]: Start difference. First operand 123 states and 142 transitions. Second operand 7 states. [2019-05-23 11:30:07,045 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:07,045 INFO L146 ILogger]: Finished difference Result 275 states and 315 transitions. [2019-05-23 11:30:07,048 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:30:07,048 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 46 [2019-05-23 11:30:07,049 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:07,050 INFO L146 ILogger]: With dead ends: 275 [2019-05-23 11:30:07,051 INFO L146 ILogger]: Without dead ends: 170 [2019-05-23 11:30:07,052 INFO L146 ILogger]: 0 DeclaredPredicates, 54 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:30:07,053 INFO L146 ILogger]: Start minimizeSevpa. Operand 170 states. [2019-05-23 11:30:07,072 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 170 to 122. [2019-05-23 11:30:07,073 INFO L146 ILogger]: Start removeUnreachable. Operand 122 states. [2019-05-23 11:30:07,075 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 122 states to 122 states and 132 transitions. [2019-05-23 11:30:07,076 INFO L146 ILogger]: Start accepts. Automaton has 122 states and 132 transitions. Word has length 46 [2019-05-23 11:30:07,076 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:07,076 INFO L146 ILogger]: Abstraction has 122 states and 132 transitions. [2019-05-23 11:30:07,076 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:30:07,076 INFO L146 ILogger]: Start isEmpty. Operand 122 states and 132 transitions. [2019-05-23 11:30:07,083 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 122 [2019-05-23 11:30:07,083 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:07,084 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:30:07,084 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:07,084 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:07,084 INFO L146 ILogger]: Analyzing trace with hash 1785131703, now seen corresponding path program 1 times [2019-05-23 11:30:07,084 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:07,085 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:07,086 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:07,086 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:07,086 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:07,121 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:07,262 INFO L146 ILogger]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:30:07,263 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:07,263 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 11:30:07,280 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:07,321 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:07,322 INFO L146 ILogger]: Trace formula consists of 197 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:30:07,328 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:07,436 INFO L146 ILogger]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:30:07,457 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:07,458 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:30:07,458 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:30:07,459 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:30:07,459 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:30:07,459 INFO L146 ILogger]: Start difference. First operand 122 states and 132 transitions. Second operand 9 states. [2019-05-23 11:30:08,536 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:08,536 INFO L146 ILogger]: Finished difference Result 278 states and 298 transitions. [2019-05-23 11:30:08,536 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:30:08,537 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 121 [2019-05-23 11:30:08,537 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:08,539 INFO L146 ILogger]: With dead ends: 278 [2019-05-23 11:30:08,539 INFO L146 ILogger]: Without dead ends: 175 [2019-05-23 11:30:08,540 INFO L146 ILogger]: 0 DeclaredPredicates, 129 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:30:08,541 INFO L146 ILogger]: Start minimizeSevpa. Operand 175 states. [2019-05-23 11:30:08,548 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 175 to 127. [2019-05-23 11:30:08,548 INFO L146 ILogger]: Start removeUnreachable. Operand 127 states. [2019-05-23 11:30:08,549 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 127 states to 127 states and 137 transitions. [2019-05-23 11:30:08,549 INFO L146 ILogger]: Start accepts. Automaton has 127 states and 137 transitions. Word has length 121 [2019-05-23 11:30:08,549 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:08,549 INFO L146 ILogger]: Abstraction has 127 states and 137 transitions. [2019-05-23 11:30:08,550 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:30:08,550 INFO L146 ILogger]: Start isEmpty. Operand 127 states and 137 transitions. [2019-05-23 11:30:08,552 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 127 [2019-05-23 11:30:08,552 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:08,552 INFO L146 ILogger]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:30:08,552 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:08,553 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:08,553 INFO L146 ILogger]: Analyzing trace with hash 1890499203, now seen corresponding path program 2 times [2019-05-23 11:30:08,553 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:08,553 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:08,554 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:08,554 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:08,555 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:08,583 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:08,691 INFO L146 ILogger]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-05-23 11:30:08,691 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:08,691 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 11:30:08,705 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:30:08,763 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:30:08,763 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:08,764 INFO L146 ILogger]: Trace formula consists of 204 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:30:08,769 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:08,842 INFO L146 ILogger]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-05-23 11:30:08,867 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:08,868 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:30:08,868 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:30:08,868 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:30:08,869 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:30:08,869 INFO L146 ILogger]: Start difference. First operand 127 states and 137 transitions. Second operand 9 states. [2019-05-23 11:30:09,354 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:09,354 INFO L146 ILogger]: Finished difference Result 273 states and 292 transitions. [2019-05-23 11:30:09,355 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:30:09,355 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 126 [2019-05-23 11:30:09,356 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:09,357 INFO L146 ILogger]: With dead ends: 273 [2019-05-23 11:30:09,357 INFO L146 ILogger]: Without dead ends: 179 [2019-05-23 11:30:09,359 INFO L146 ILogger]: 0 DeclaredPredicates, 134 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:30:09,359 INFO L146 ILogger]: Start minimizeSevpa. Operand 179 states. [2019-05-23 11:30:09,366 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 179 to 134. [2019-05-23 11:30:09,366 INFO L146 ILogger]: Start removeUnreachable. Operand 134 states. [2019-05-23 11:30:09,367 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 134 states to 134 states and 144 transitions. [2019-05-23 11:30:09,367 INFO L146 ILogger]: Start accepts. Automaton has 134 states and 144 transitions. Word has length 126 [2019-05-23 11:30:09,367 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:09,368 INFO L146 ILogger]: Abstraction has 134 states and 144 transitions. [2019-05-23 11:30:09,368 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:30:09,368 INFO L146 ILogger]: Start isEmpty. Operand 134 states and 144 transitions. [2019-05-23 11:30:09,370 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 134 [2019-05-23 11:30:09,370 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:09,370 INFO L146 ILogger]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:30:09,370 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:09,371 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:09,371 INFO L146 ILogger]: Analyzing trace with hash -1624463301, now seen corresponding path program 3 times [2019-05-23 11:30:09,371 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:09,371 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:09,372 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:09,372 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:09,372 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:09,398 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:09,802 INFO L146 ILogger]: Checked inductivity of 33 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-05-23 11:30:09,802 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:09,802 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 11:30:09,812 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:30:09,868 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:30:09,868 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:09,869 INFO L146 ILogger]: Trace formula consists of 186 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:30:09,874 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:10,052 INFO L146 ILogger]: Checked inductivity of 33 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-05-23 11:30:10,072 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:10,072 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:30:10,073 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:30:10,073 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:30:10,073 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:30:10,073 INFO L146 ILogger]: Start difference. First operand 134 states and 144 transitions. Second operand 9 states. [2019-05-23 11:30:10,441 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:10,441 INFO L146 ILogger]: Finished difference Result 266 states and 284 transitions. [2019-05-23 11:30:10,442 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:30:10,442 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 133 [2019-05-23 11:30:10,443 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:10,444 INFO L146 ILogger]: With dead ends: 266 [2019-05-23 11:30:10,445 INFO L146 ILogger]: Without dead ends: 181 [2019-05-23 11:30:10,445 INFO L146 ILogger]: 0 DeclaredPredicates, 141 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:30:10,446 INFO L146 ILogger]: Start minimizeSevpa. Operand 181 states. [2019-05-23 11:30:10,453 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 181 to 141. [2019-05-23 11:30:10,453 INFO L146 ILogger]: Start removeUnreachable. Operand 141 states. [2019-05-23 11:30:10,454 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 141 states to 141 states and 151 transitions. [2019-05-23 11:30:10,454 INFO L146 ILogger]: Start accepts. Automaton has 141 states and 151 transitions. Word has length 133 [2019-05-23 11:30:10,455 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:10,455 INFO L146 ILogger]: Abstraction has 141 states and 151 transitions. [2019-05-23 11:30:10,455 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:30:10,455 INFO L146 ILogger]: Start isEmpty. Operand 141 states and 151 transitions. [2019-05-23 11:30:10,457 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 141 [2019-05-23 11:30:10,457 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:10,457 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:30:10,458 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:10,458 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:10,458 INFO L146 ILogger]: Analyzing trace with hash -1863915076, now seen corresponding path program 4 times [2019-05-23 11:30:10,458 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:10,458 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:10,459 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:10,459 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:10,459 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:10,481 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:10,580 INFO L146 ILogger]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:30:10,581 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:10,581 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 11:30:10,591 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:30:10,629 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:30:10,629 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:10,630 INFO L146 ILogger]: Trace formula consists of 224 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:30:10,638 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:10,745 INFO L146 ILogger]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:30:10,763 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:10,763 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:30:10,764 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:30:10,764 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:30:10,764 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:30:10,765 INFO L146 ILogger]: Start difference. First operand 141 states and 151 transitions. Second operand 9 states. [2019-05-23 11:30:11,193 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:11,194 INFO L146 ILogger]: Finished difference Result 259 states and 276 transitions. [2019-05-23 11:30:11,194 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:30:11,194 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 140 [2019-05-23 11:30:11,194 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:11,195 INFO L146 ILogger]: With dead ends: 259 [2019-05-23 11:30:11,195 INFO L146 ILogger]: Without dead ends: 183 [2019-05-23 11:30:11,196 INFO L146 ILogger]: 0 DeclaredPredicates, 148 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:30:11,197 INFO L146 ILogger]: Start minimizeSevpa. Operand 183 states. [2019-05-23 11:30:11,202 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 183 to 148. [2019-05-23 11:30:11,202 INFO L146 ILogger]: Start removeUnreachable. Operand 148 states. [2019-05-23 11:30:11,203 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 148 states to 148 states and 158 transitions. [2019-05-23 11:30:11,203 INFO L146 ILogger]: Start accepts. Automaton has 148 states and 158 transitions. Word has length 140 [2019-05-23 11:30:11,203 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:11,203 INFO L146 ILogger]: Abstraction has 148 states and 158 transitions. [2019-05-23 11:30:11,203 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:30:11,203 INFO L146 ILogger]: Start isEmpty. Operand 148 states and 158 transitions. [2019-05-23 11:30:11,205 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 148 [2019-05-23 11:30:11,205 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:11,206 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:11,206 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:11,206 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:11,206 INFO L146 ILogger]: Analyzing trace with hash -630848830, now seen corresponding path program 5 times [2019-05-23 11:30:11,206 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:11,206 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:11,207 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:11,207 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:11,207 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:11,233 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:11,340 INFO L146 ILogger]: Checked inductivity of 49 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:30:11,341 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:11,341 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 11:30:11,350 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:30:11,428 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2019-05-23 11:30:11,428 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:11,430 INFO L146 ILogger]: Trace formula consists of 237 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:30:11,434 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:11,519 INFO L146 ILogger]: Checked inductivity of 49 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:30:11,537 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:11,538 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:30:11,538 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:30:11,538 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:30:11,539 INFO L146 ILogger]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:30:11,539 INFO L146 ILogger]: Start difference. First operand 148 states and 158 transitions. Second operand 9 states. [2019-05-23 11:30:11,986 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:11,987 INFO L146 ILogger]: Finished difference Result 243 states and 259 transitions. [2019-05-23 11:30:11,987 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-05-23 11:30:11,987 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 147 [2019-05-23 11:30:11,988 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:11,989 INFO L146 ILogger]: With dead ends: 243 [2019-05-23 11:30:11,990 INFO L146 ILogger]: Without dead ends: 192 [2019-05-23 11:30:11,991 INFO L146 ILogger]: 0 DeclaredPredicates, 157 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:30:11,992 INFO L146 ILogger]: Start minimizeSevpa. Operand 192 states. [2019-05-23 11:30:11,996 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 192 to 162. [2019-05-23 11:30:11,996 INFO L146 ILogger]: Start removeUnreachable. Operand 162 states. [2019-05-23 11:30:11,997 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 162 states to 162 states and 172 transitions. [2019-05-23 11:30:11,997 INFO L146 ILogger]: Start accepts. Automaton has 162 states and 172 transitions. Word has length 147 [2019-05-23 11:30:11,997 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:11,997 INFO L146 ILogger]: Abstraction has 162 states and 172 transitions. [2019-05-23 11:30:11,997 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:30:11,998 INFO L146 ILogger]: Start isEmpty. Operand 162 states and 172 transitions. [2019-05-23 11:30:11,999 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 162 [2019-05-23 11:30:11,999 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:12,000 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:12,000 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:12,000 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:12,000 INFO L146 ILogger]: Analyzing trace with hash 1240637826, now seen corresponding path program 6 times [2019-05-23 11:30:12,000 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:12,001 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:12,001 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:12,002 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:12,002 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:12,021 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:12,137 INFO L146 ILogger]: Checked inductivity of 65 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-05-23 11:30:12,137 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:12,137 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 11:30:12,147 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:30:12,199 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2019-05-23 11:30:12,199 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:12,200 INFO L146 ILogger]: Trace formula consists of 259 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:30:12,203 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:12,330 INFO L146 ILogger]: Checked inductivity of 65 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-05-23 11:30:12,349 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:12,349 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:30:12,349 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:30:12,350 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:30:12,350 INFO L146 ILogger]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:30:12,350 INFO L146 ILogger]: Start difference. First operand 162 states and 172 transitions. Second operand 9 states. [2019-05-23 11:30:12,790 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:12,790 INFO L146 ILogger]: Finished difference Result 245 states and 260 transitions. [2019-05-23 11:30:12,790 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-05-23 11:30:12,791 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 161 [2019-05-23 11:30:12,792 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:12,793 INFO L146 ILogger]: With dead ends: 245 [2019-05-23 11:30:12,793 INFO L146 ILogger]: Without dead ends: 196 [2019-05-23 11:30:12,794 INFO L146 ILogger]: 0 DeclaredPredicates, 171 GetRequests, 158 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:30:12,794 INFO L146 ILogger]: Start minimizeSevpa. Operand 196 states. [2019-05-23 11:30:12,799 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 196 to 176. [2019-05-23 11:30:12,799 INFO L146 ILogger]: Start removeUnreachable. Operand 176 states. [2019-05-23 11:30:12,800 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 176 states to 176 states and 186 transitions. [2019-05-23 11:30:12,800 INFO L146 ILogger]: Start accepts. Automaton has 176 states and 186 transitions. Word has length 161 [2019-05-23 11:30:12,800 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:12,800 INFO L146 ILogger]: Abstraction has 176 states and 186 transitions. [2019-05-23 11:30:12,800 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:30:12,801 INFO L146 ILogger]: Start isEmpty. Operand 176 states and 186 transitions. [2019-05-23 11:30:12,802 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 176 [2019-05-23 11:30:12,802 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:12,802 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:12,803 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:12,803 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:12,803 INFO L146 ILogger]: Analyzing trace with hash 424877520, now seen corresponding path program 7 times [2019-05-23 11:30:12,803 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:12,803 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:12,804 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:12,804 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:12,805 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:12,821 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:12,979 INFO L146 ILogger]: Checked inductivity of 81 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-05-23 11:30:12,980 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:12,980 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 11:30:12,990 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:13,039 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:13,040 INFO L146 ILogger]: Trace formula consists of 281 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:30:13,043 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:13,292 INFO L146 ILogger]: Checked inductivity of 81 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-05-23 11:30:13,312 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:13,312 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:30:13,313 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:30:13,313 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:30:13,313 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:30:13,313 INFO L146 ILogger]: Start difference. First operand 176 states and 186 transitions. Second operand 9 states. [2019-05-23 11:30:13,961 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:13,961 INFO L146 ILogger]: Finished difference Result 240 states and 253 transitions. [2019-05-23 11:30:13,962 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:30:13,962 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 175 [2019-05-23 11:30:13,962 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:13,966 INFO L146 ILogger]: With dead ends: 240 [2019-05-23 11:30:13,966 INFO L146 ILogger]: Without dead ends: 193 [2019-05-23 11:30:13,967 INFO L146 ILogger]: 0 DeclaredPredicates, 183 GetRequests, 172 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:30:13,968 INFO L146 ILogger]: Start minimizeSevpa. Operand 193 states. [2019-05-23 11:30:13,972 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 193 to 183. [2019-05-23 11:30:13,972 INFO L146 ILogger]: Start removeUnreachable. Operand 183 states. [2019-05-23 11:30:13,973 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 183 states to 183 states and 193 transitions. [2019-05-23 11:30:13,973 INFO L146 ILogger]: Start accepts. Automaton has 183 states and 193 transitions. Word has length 175 [2019-05-23 11:30:13,974 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:13,974 INFO L146 ILogger]: Abstraction has 183 states and 193 transitions. [2019-05-23 11:30:13,974 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:30:13,974 INFO L146 ILogger]: Start isEmpty. Operand 183 states and 193 transitions. [2019-05-23 11:30:13,976 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 183 [2019-05-23 11:30:13,976 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:13,977 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2019-05-23 11:30:13,977 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:13,977 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:13,977 INFO L146 ILogger]: Analyzing trace with hash -1378447634, now seen corresponding path program 8 times [2019-05-23 11:30:13,977 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:13,978 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:13,978 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:13,978 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:13,979 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:13,999 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:14,508 INFO L146 ILogger]: Checked inductivity of 89 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-05-23 11:30:14,508 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:14,508 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 11:30:14,530 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:30:14,608 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:30:14,608 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:14,610 INFO L146 ILogger]: Trace formula consists of 292 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:30:14,613 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:15,029 INFO L146 ILogger]: Checked inductivity of 89 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-05-23 11:30:15,048 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:15,048 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:30:15,048 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:30:15,049 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:30:15,049 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:30:15,049 INFO L146 ILogger]: Start difference. First operand 183 states and 193 transitions. Second operand 9 states. [2019-05-23 11:30:15,362 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:15,362 INFO L146 ILogger]: Finished difference Result 233 states and 245 transitions. [2019-05-23 11:30:15,363 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:30:15,363 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 182 [2019-05-23 11:30:15,364 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:15,365 INFO L146 ILogger]: With dead ends: 233 [2019-05-23 11:30:15,365 INFO L146 ILogger]: Without dead ends: 195 [2019-05-23 11:30:15,366 INFO L146 ILogger]: 0 DeclaredPredicates, 190 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:30:15,366 INFO L146 ILogger]: Start minimizeSevpa. Operand 195 states. [2019-05-23 11:30:15,371 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 195 to 190. [2019-05-23 11:30:15,371 INFO L146 ILogger]: Start removeUnreachable. Operand 190 states. [2019-05-23 11:30:15,372 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 190 states to 190 states and 200 transitions. [2019-05-23 11:30:15,372 INFO L146 ILogger]: Start accepts. Automaton has 190 states and 200 transitions. Word has length 182 [2019-05-23 11:30:15,373 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:15,373 INFO L146 ILogger]: Abstraction has 190 states and 200 transitions. [2019-05-23 11:30:15,373 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:30:15,373 INFO L146 ILogger]: Start isEmpty. Operand 190 states and 200 transitions. [2019-05-23 11:30:15,374 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 190 [2019-05-23 11:30:15,374 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:15,374 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2019-05-23 11:30:15,375 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:15,375 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:15,375 INFO L146 ILogger]: Analyzing trace with hash 610566903, now seen corresponding path program 9 times [2019-05-23 11:30:15,375 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:15,375 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:15,376 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:15,376 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:15,376 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:15,457 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:16,763 WARN L146 ILogger]: Spent 175.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 20 [2019-05-23 11:30:17,187 WARN L146 ILogger]: Spent 131.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 22 [2019-05-23 11:30:17,651 WARN L146 ILogger]: Spent 103.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2019-05-23 11:30:18,360 WARN L146 ILogger]: Spent 135.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 27 [2019-05-23 11:30:19,477 WARN L146 ILogger]: Spent 126.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 25 [2019-05-23 11:30:19,638 WARN L146 ILogger]: Spent 104.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 25 [2019-05-23 11:30:20,605 WARN L146 ILogger]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 29 [2019-05-23 11:30:21,866 WARN L146 ILogger]: Spent 131.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 26 [2019-05-23 11:30:22,043 WARN L146 ILogger]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 29 [2019-05-23 11:30:24,803 WARN L146 ILogger]: Spent 147.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2019-05-23 11:30:25,309 WARN L146 ILogger]: Spent 107.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 31 [2019-05-23 11:30:28,736 WARN L146 ILogger]: Spent 130.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2019-05-23 11:30:29,346 INFO L146 ILogger]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:30:29,347 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:29,347 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 11:30:29,358 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:30:29,405 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:30:29,406 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:29,409 WARN L146 ILogger]: Trace formula consists of 303 conjuncts, 160 conjunts are in the unsatisfiable core [2019-05-23 11:30:29,414 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:42,083 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:30:42,090 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:30:42,091 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 14 [2019-05-23 11:30:42,092 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:30:42,102 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:30:42,103 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:30:42,103 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:31, output treesize:3 [2019-05-23 11:30:42,545 INFO L146 ILogger]: Checked inductivity of 97 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-05-23 11:30:42,564 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:42,564 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 81] total 166 [2019-05-23 11:30:42,565 INFO L146 ILogger]: Interpolant automaton has 166 states [2019-05-23 11:30:42,566 INFO L146 ILogger]: Constructing interpolant automaton starting with 166 interpolants. [2019-05-23 11:30:42,577 INFO L146 ILogger]: CoverageRelationStatistics Valid=822, Invalid=26568, Unknown=0, NotChecked=0, Total=27390 [2019-05-23 11:30:42,577 INFO L146 ILogger]: Start difference. First operand 190 states and 200 transitions. Second operand 166 states. [2019-05-23 11:30:43,564 WARN L146 ILogger]: Spent 118.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 20