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_m2_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:30:11,678 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:30:11,681 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:30:11,697 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:30:11,697 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:30:11,699 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:30:11,700 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:30:11,703 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:30:11,705 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:30:11,706 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:30:11,715 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:30:11,715 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:30:11,716 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:30:11,719 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:30:11,722 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:30:11,724 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:30:11,725 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:30:11,731 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:30:11,733 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:30:11,735 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:30:11,739 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:30:11,743 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:30:11,747 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:30:11,747 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:30:11,747 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:30:11,748 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:30:11,749 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:30:11,751 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:30:11,751 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:30:11,752 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:30:11,753 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:30:11,754 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:30:11,757 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:30:11,757 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:30:11,758 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:30:11,758 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:30:11,758 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:30:11,759 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:30:11,762 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:30:11,762 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:30:11,785 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:30:11,785 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:30:11,788 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:30:11,788 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:30:11,788 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:30:11,788 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:30:11,789 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:30:11,789 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:30:11,789 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:30:11,789 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:30:11,789 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:30:11,790 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:30:11,790 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:30:11,791 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:30:11,791 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:30:11,791 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:30:11,791 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:30:11,791 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:30:11,792 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:30:11,793 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:30:11,793 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:30:11,793 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:30:11,794 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:30:11,794 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:30:11,794 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:30:11,794 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:30:11,794 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:30:11,795 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:30:11,795 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 11:30:11,829 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:30:11,842 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:30:11,847 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:30:11,848 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:30:11,849 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:30:11,849 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-crafted/zero_sum_m2_true-unreach-call.c [2019-05-23 11:30:11,912 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b21451a05/a273a72db6d2455292e838343e9e1266/FLAG3516b41bd [2019-05-23 11:30:12,337 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:30:12,338 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-crafted/zero_sum_m2_true-unreach-call.c [2019-05-23 11:30:12,344 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b21451a05/a273a72db6d2455292e838343e9e1266/FLAG3516b41bd [2019-05-23 11:30:12,707 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b21451a05/a273a72db6d2455292e838343e9e1266 [2019-05-23 11:30:12,718 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:30:12,720 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:30:12,721 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:30:12,721 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:30:12,726 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:30:12,727 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:30:12" (1/1) ... [2019-05-23 11:30:12,729 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59c8d0a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:12, skipping insertion in model container [2019-05-23 11:30:12,730 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:30:12" (1/1) ... [2019-05-23 11:30:12,737 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:30:12,760 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:30:12,963 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:30:12,968 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:30:12,998 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:30:13,029 INFO L146 ILogger]: Completed translation [2019-05-23 11:30:13,030 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:13 WrapperNode [2019-05-23 11:30:13,030 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:30:13,031 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:30:13,031 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:30:13,032 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:30:13,042 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:13" (1/1) ... [2019-05-23 11:30:13,061 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:13" (1/1) ... [2019-05-23 11:30:13,094 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:30:13,094 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:30:13,094 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:30:13,097 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:30:13,111 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:13" (1/1) ... [2019-05-23 11:30:13,111 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:13" (1/1) ... [2019-05-23 11:30:13,114 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:13" (1/1) ... [2019-05-23 11:30:13,115 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:13" (1/1) ... [2019-05-23 11:30:13,123 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:13" (1/1) ... [2019-05-23 11:30:13,129 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:13" (1/1) ... [2019-05-23 11:30:13,134 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:13" (1/1) ... [2019-05-23 11:30:13,136 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:30:13,137 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:30:13,137 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:30:13,137 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:30:13,146 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:13" (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 11:30:13,358 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:30:13,358 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:30:13,358 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:30:13,359 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:30:13,359 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:30:13,829 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:30:13,830 INFO L146 ILogger]: Removed 10 assume(true) statements. [2019-05-23 11:30:13,831 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:30:13 BoogieIcfgContainer [2019-05-23 11:30:13,831 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:30:13,832 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:30:13,832 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:30:13,835 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:30:13,836 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:30:12" (1/3) ... [2019-05-23 11:30:13,836 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc22577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:30:13, skipping insertion in model container [2019-05-23 11:30:13,837 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:13" (2/3) ... [2019-05-23 11:30:13,837 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc22577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:30:13, skipping insertion in model container [2019-05-23 11:30:13,837 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:30:13" (3/3) ... [2019-05-23 11:30:13,839 INFO L146 ILogger]: Analyzing ICFG zero_sum_m2_true-unreach-call.c [2019-05-23 11:30:13,847 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:30:13,854 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:30:13,870 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:30:13,896 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:30:13,897 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:30:13,897 INFO L146 ILogger]: Hoare is true [2019-05-23 11:30:13,897 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:30:13,898 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:30:13,898 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:30:13,898 INFO L146 ILogger]: Difference is false [2019-05-23 11:30:13,898 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:30:13,898 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:30:13,912 INFO L146 ILogger]: Start isEmpty. Operand 56 states. [2019-05-23 11:30:13,919 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 26 [2019-05-23 11:30:13,919 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:13,920 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] [2019-05-23 11:30:13,922 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:13,927 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:13,928 INFO L146 ILogger]: Analyzing trace with hash 170593938, now seen corresponding path program 1 times [2019-05-23 11:30:13,930 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:13,930 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:13,977 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:13,977 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:13,977 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:14,014 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:14,053 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 11:30:14,055 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:30:14,060 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:30:14,064 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:30:14,075 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:30:14,076 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:30:14,078 INFO L146 ILogger]: Start difference. First operand 56 states. Second operand 2 states. [2019-05-23 11:30:14,094 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:14,094 INFO L146 ILogger]: Finished difference Result 92 states and 107 transitions. [2019-05-23 11:30:14,094 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:30:14,095 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 25 [2019-05-23 11:30:14,096 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:14,106 INFO L146 ILogger]: With dead ends: 92 [2019-05-23 11:30:14,106 INFO L146 ILogger]: Without dead ends: 50 [2019-05-23 11:30:14,109 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 11:30:14,123 INFO L146 ILogger]: Start minimizeSevpa. Operand 50 states. [2019-05-23 11:30:14,138 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 50 to 50. [2019-05-23 11:30:14,139 INFO L146 ILogger]: Start removeUnreachable. Operand 50 states. [2019-05-23 11:30:14,140 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2019-05-23 11:30:14,141 INFO L146 ILogger]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 25 [2019-05-23 11:30:14,141 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:14,142 INFO L146 ILogger]: Abstraction has 50 states and 53 transitions. [2019-05-23 11:30:14,142 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:30:14,142 INFO L146 ILogger]: Start isEmpty. Operand 50 states and 53 transitions. [2019-05-23 11:30:14,145 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 26 [2019-05-23 11:30:14,146 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:14,146 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] [2019-05-23 11:30:14,147 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:14,147 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:14,147 INFO L146 ILogger]: Analyzing trace with hash -1393632578, now seen corresponding path program 1 times [2019-05-23 11:30:14,147 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:14,147 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:14,149 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:14,150 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:14,151 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:14,186 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:14,286 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 11:30:14,286 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:30:14,286 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:30:14,288 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:30:14,288 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:30:14,289 INFO L146 ILogger]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:30:14,289 INFO L146 ILogger]: Start difference. First operand 50 states and 53 transitions. Second operand 5 states. [2019-05-23 11:30:14,517 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:14,518 INFO L146 ILogger]: Finished difference Result 71 states and 77 transitions. [2019-05-23 11:30:14,518 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:30:14,518 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 25 [2019-05-23 11:30:14,518 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:14,520 INFO L146 ILogger]: With dead ends: 71 [2019-05-23 11:30:14,520 INFO L146 ILogger]: Without dead ends: 65 [2019-05-23 11:30:14,521 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 11:30:14,522 INFO L146 ILogger]: Start minimizeSevpa. Operand 65 states. [2019-05-23 11:30:14,528 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 65 to 57. [2019-05-23 11:30:14,528 INFO L146 ILogger]: Start removeUnreachable. Operand 57 states. [2019-05-23 11:30:14,529 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2019-05-23 11:30:14,530 INFO L146 ILogger]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 25 [2019-05-23 11:30:14,530 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:14,530 INFO L146 ILogger]: Abstraction has 57 states and 63 transitions. [2019-05-23 11:30:14,530 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:30:14,531 INFO L146 ILogger]: Start isEmpty. Operand 57 states and 63 transitions. [2019-05-23 11:30:14,532 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 33 [2019-05-23 11:30:14,532 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:14,532 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:14,533 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:14,533 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:14,533 INFO L146 ILogger]: Analyzing trace with hash -537510346, now seen corresponding path program 1 times [2019-05-23 11:30:14,533 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:14,533 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:14,534 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:14,534 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:14,535 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:14,550 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:14,837 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 11:30:14,838 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:14,838 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 11:30:14,849 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:14,871 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:14,872 INFO L146 ILogger]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:30:14,878 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:14,934 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 11:30:14,956 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:30:14,956 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2019-05-23 11:30:14,956 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:30:14,957 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:30:14,958 INFO L146 ILogger]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:30:14,958 INFO L146 ILogger]: Start difference. First operand 57 states and 63 transitions. Second operand 7 states. [2019-05-23 11:30:15,394 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:15,394 INFO L146 ILogger]: Finished difference Result 111 states and 123 transitions. [2019-05-23 11:30:15,396 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:30:15,396 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 32 [2019-05-23 11:30:15,396 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:15,398 INFO L146 ILogger]: With dead ends: 111 [2019-05-23 11:30:15,398 INFO L146 ILogger]: Without dead ends: 76 [2019-05-23 11:30:15,400 INFO L146 ILogger]: 0 DeclaredPredicates, 40 GetRequests, 31 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 11:30:15,400 INFO L146 ILogger]: Start minimizeSevpa. Operand 76 states. [2019-05-23 11:30:15,407 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 76 to 61. [2019-05-23 11:30:15,407 INFO L146 ILogger]: Start removeUnreachable. Operand 61 states. [2019-05-23 11:30:15,408 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2019-05-23 11:30:15,408 INFO L146 ILogger]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 32 [2019-05-23 11:30:15,409 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:15,409 INFO L146 ILogger]: Abstraction has 61 states and 64 transitions. [2019-05-23 11:30:15,409 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:30:15,409 INFO L146 ILogger]: Start isEmpty. Operand 61 states and 64 transitions. [2019-05-23 11:30:15,411 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 61 [2019-05-23 11:30:15,411 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:15,411 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] [2019-05-23 11:30:15,411 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:15,412 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:15,412 INFO L146 ILogger]: Analyzing trace with hash 46015940, now seen corresponding path program 1 times [2019-05-23 11:30:15,412 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:15,412 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:15,413 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:15,413 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:15,413 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:15,432 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:15,539 INFO L146 ILogger]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-05-23 11:30:15,539 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:15,539 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 11:30:15,556 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:15,596 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:15,597 INFO L146 ILogger]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:30:15,600 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:15,707 INFO L146 ILogger]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-05-23 11:30:15,734 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:15,734 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:30:15,734 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:30:15,735 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:30:15,735 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:30:15,735 INFO L146 ILogger]: Start difference. First operand 61 states and 64 transitions. Second operand 9 states. [2019-05-23 11:30:16,358 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:16,358 INFO L146 ILogger]: Finished difference Result 123 states and 129 transitions. [2019-05-23 11:30:16,359 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:30:16,359 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 60 [2019-05-23 11:30:16,360 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:16,361 INFO L146 ILogger]: With dead ends: 123 [2019-05-23 11:30:16,361 INFO L146 ILogger]: Without dead ends: 83 [2019-05-23 11:30:16,361 INFO L146 ILogger]: 0 DeclaredPredicates, 68 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:30:16,362 INFO L146 ILogger]: Start minimizeSevpa. Operand 83 states. [2019-05-23 11:30:16,367 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 83 to 68. [2019-05-23 11:30:16,367 INFO L146 ILogger]: Start removeUnreachable. Operand 68 states. [2019-05-23 11:30:16,368 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2019-05-23 11:30:16,368 INFO L146 ILogger]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 60 [2019-05-23 11:30:16,369 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:16,369 INFO L146 ILogger]: Abstraction has 68 states and 71 transitions. [2019-05-23 11:30:16,369 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:30:16,369 INFO L146 ILogger]: Start isEmpty. Operand 68 states and 71 transitions. [2019-05-23 11:30:16,370 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 68 [2019-05-23 11:30:16,370 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:16,370 INFO L146 ILogger]: trace histogram [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 11:30:16,371 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:16,371 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:16,371 INFO L146 ILogger]: Analyzing trace with hash -1884590761, now seen corresponding path program 2 times [2019-05-23 11:30:16,371 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:16,371 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:16,372 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:16,372 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:16,372 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:16,408 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:16,542 INFO L146 ILogger]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-05-23 11:30:16,542 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:16,542 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 11:30:16,552 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:30:16,594 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:30:16,594 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:16,595 INFO L146 ILogger]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:30:16,598 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:16,689 INFO L146 ILogger]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-05-23 11:30:16,708 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:16,709 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:30:16,709 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:30:16,709 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:30:16,710 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:30:16,710 INFO L146 ILogger]: Start difference. First operand 68 states and 71 transitions. Second operand 9 states. [2019-05-23 11:30:17,466 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:17,467 INFO L146 ILogger]: Finished difference Result 116 states and 121 transitions. [2019-05-23 11:30:17,467 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:30:17,467 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 67 [2019-05-23 11:30:17,468 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:17,468 INFO L146 ILogger]: With dead ends: 116 [2019-05-23 11:30:17,469 INFO L146 ILogger]: Without dead ends: 85 [2019-05-23 11:30:17,469 INFO L146 ILogger]: 0 DeclaredPredicates, 75 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:30:17,470 INFO L146 ILogger]: Start minimizeSevpa. Operand 85 states. [2019-05-23 11:30:17,475 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 85 to 75. [2019-05-23 11:30:17,475 INFO L146 ILogger]: Start removeUnreachable. Operand 75 states. [2019-05-23 11:30:17,476 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2019-05-23 11:30:17,476 INFO L146 ILogger]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 67 [2019-05-23 11:30:17,476 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:17,476 INFO L146 ILogger]: Abstraction has 75 states and 78 transitions. [2019-05-23 11:30:17,477 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:30:17,477 INFO L146 ILogger]: Start isEmpty. Operand 75 states and 78 transitions. [2019-05-23 11:30:17,478 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 75 [2019-05-23 11:30:17,478 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:17,478 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:30:17,479 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:17,479 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:17,479 INFO L146 ILogger]: Analyzing trace with hash -902288035, now seen corresponding path program 3 times [2019-05-23 11:30:17,479 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:17,479 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:17,480 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:17,480 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:17,481 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:17,495 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:17,601 INFO L146 ILogger]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-05-23 11:30:17,602 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:17,602 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 11:30:17,614 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:30:17,652 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:30:17,652 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:17,653 INFO L146 ILogger]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:30:17,657 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:17,736 INFO L146 ILogger]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-05-23 11:30:17,755 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:17,755 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:30:17,755 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:30:17,755 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:30:17,756 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:30:17,756 INFO L146 ILogger]: Start difference. First operand 75 states and 78 transitions. Second operand 9 states. [2019-05-23 11:30:17,952 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:17,952 INFO L146 ILogger]: Finished difference Result 109 states and 113 transitions. [2019-05-23 11:30:17,952 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:30:17,953 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 74 [2019-05-23 11:30:17,953 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:17,955 INFO L146 ILogger]: With dead ends: 109 [2019-05-23 11:30:17,955 INFO L146 ILogger]: Without dead ends: 87 [2019-05-23 11:30:17,956 INFO L146 ILogger]: 0 DeclaredPredicates, 82 GetRequests, 71 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 11:30:17,956 INFO L146 ILogger]: Start minimizeSevpa. Operand 87 states. [2019-05-23 11:30:17,961 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 87 to 82. [2019-05-23 11:30:17,961 INFO L146 ILogger]: Start removeUnreachable. Operand 82 states. [2019-05-23 11:30:17,962 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 82 states to 82 states and 85 transitions. [2019-05-23 11:30:17,962 INFO L146 ILogger]: Start accepts. Automaton has 82 states and 85 transitions. Word has length 74 [2019-05-23 11:30:17,962 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:17,963 INFO L146 ILogger]: Abstraction has 82 states and 85 transitions. [2019-05-23 11:30:17,963 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:30:17,963 INFO L146 ILogger]: Start isEmpty. Operand 82 states and 85 transitions. [2019-05-23 11:30:17,964 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 82 [2019-05-23 11:30:17,964 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:17,964 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, 1, 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 11:30:17,965 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:17,965 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:17,965 INFO L146 ILogger]: Analyzing trace with hash -1292735618, now seen corresponding path program 4 times [2019-05-23 11:30:17,965 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:17,965 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:17,966 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:17,966 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:17,967 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:18,015 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:18,762 WARN L146 ILogger]: Spent 197.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 16 [2019-05-23 11:30:19,090 WARN L146 ILogger]: Spent 157.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2019-05-23 11:30:19,448 WARN L146 ILogger]: Spent 146.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 28 [2019-05-23 11:30:21,652 INFO L146 ILogger]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:30:21,652 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:21,652 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 11:30:21,661 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:30:21,682 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:30:21,682 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:21,683 INFO L146 ILogger]: Trace formula consists of 134 conjuncts, 66 conjunts are in the unsatisfiable core [2019-05-23 11:30:21,687 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:23,115 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2019-05-23 11:30:23,116 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:30:23,124 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:30:23,124 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:30:23,124 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2019-05-23 11:30:23,551 INFO L146 ILogger]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:30:23,570 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:23,570 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 32] total 57 [2019-05-23 11:30:23,571 INFO L146 ILogger]: Interpolant automaton has 57 states [2019-05-23 11:30:23,571 INFO L146 ILogger]: Constructing interpolant automaton starting with 57 interpolants. [2019-05-23 11:30:23,573 INFO L146 ILogger]: CoverageRelationStatistics Valid=214, Invalid=2978, Unknown=0, NotChecked=0, Total=3192 [2019-05-23 11:30:23,573 INFO L146 ILogger]: Start difference. First operand 82 states and 85 transitions. Second operand 57 states. [2019-05-23 11:30:29,460 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:29,460 INFO L146 ILogger]: Finished difference Result 151 states and 157 transitions. [2019-05-23 11:30:29,461 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2019-05-23 11:30:29,461 INFO L146 ILogger]: Start accepts. Automaton has 57 states. Word has length 81 [2019-05-23 11:30:29,462 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:29,463 INFO L146 ILogger]: With dead ends: 151 [2019-05-23 11:30:29,463 INFO L146 ILogger]: Without dead ends: 145 [2019-05-23 11:30:29,468 INFO L146 ILogger]: 0 DeclaredPredicates, 156 GetRequests, 58 SyntacticMatches, 8 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2361 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=529, Invalid=7843, Unknown=0, NotChecked=0, Total=8372 [2019-05-23 11:30:29,468 INFO L146 ILogger]: Start minimizeSevpa. Operand 145 states. [2019-05-23 11:30:29,477 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 145 to 129. [2019-05-23 11:30:29,478 INFO L146 ILogger]: Start removeUnreachable. Operand 129 states. [2019-05-23 11:30:29,478 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 129 states to 129 states and 135 transitions. [2019-05-23 11:30:29,479 INFO L146 ILogger]: Start accepts. Automaton has 129 states and 135 transitions. Word has length 81 [2019-05-23 11:30:29,479 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:29,479 INFO L146 ILogger]: Abstraction has 129 states and 135 transitions. [2019-05-23 11:30:29,479 INFO L146 ILogger]: Interpolant automaton has 57 states. [2019-05-23 11:30:29,479 INFO L146 ILogger]: Start isEmpty. Operand 129 states and 135 transitions. [2019-05-23 11:30:29,481 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 89 [2019-05-23 11:30:29,481 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:29,482 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:30:29,482 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:29,482 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:29,482 INFO L146 ILogger]: Analyzing trace with hash 850548086, now seen corresponding path program 5 times [2019-05-23 11:30:29,483 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:29,483 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:29,484 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:29,484 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:29,484 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:29,507 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:29,738 INFO L146 ILogger]: Checked inductivity of 51 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:30:29,739 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:29,739 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 11:30:29,751 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:30:29,776 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-05-23 11:30:29,777 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:29,778 INFO L146 ILogger]: Trace formula consists of 147 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:29,789 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:30,014 INFO L146 ILogger]: Checked inductivity of 51 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:30:30,035 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:30,035 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2019-05-23 11:30:30,036 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:30:30,036 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:30:30,037 INFO L146 ILogger]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:30:30,037 INFO L146 ILogger]: Start difference. First operand 129 states and 135 transitions. Second operand 21 states. [2019-05-23 11:30:30,628 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:30,628 INFO L146 ILogger]: Finished difference Result 217 states and 226 transitions. [2019-05-23 11:30:30,629 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:30:30,629 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 88 [2019-05-23 11:30:30,630 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:30,631 INFO L146 ILogger]: With dead ends: 217 [2019-05-23 11:30:30,632 INFO L146 ILogger]: Without dead ends: 188 [2019-05-23 11:30:30,633 INFO L146 ILogger]: 0 DeclaredPredicates, 124 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=287, Invalid=1519, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:30:30,633 INFO L146 ILogger]: Start minimizeSevpa. Operand 188 states. [2019-05-23 11:30:30,642 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 188 to 159. [2019-05-23 11:30:30,642 INFO L146 ILogger]: Start removeUnreachable. Operand 159 states. [2019-05-23 11:30:30,643 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 159 states to 159 states and 167 transitions. [2019-05-23 11:30:30,643 INFO L146 ILogger]: Start accepts. Automaton has 159 states and 167 transitions. Word has length 88 [2019-05-23 11:30:30,644 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:30,644 INFO L146 ILogger]: Abstraction has 159 states and 167 transitions. [2019-05-23 11:30:30,644 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:30:30,644 INFO L146 ILogger]: Start isEmpty. Operand 159 states and 167 transitions. [2019-05-23 11:30:30,645 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 89 [2019-05-23 11:30:30,646 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:30,646 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:30:30,646 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:30,646 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:30,647 INFO L146 ILogger]: Analyzing trace with hash 1373451837, now seen corresponding path program 6 times [2019-05-23 11:30:30,647 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:30,647 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:30,648 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:30,648 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:30,648 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:30,657 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:30,821 INFO L146 ILogger]: Checked inductivity of 51 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:30:30,822 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:30,822 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:30:30,833 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:30:30,889 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-05-23 11:30:30,889 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:30,890 INFO L146 ILogger]: Trace formula consists of 147 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:30,893 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:31,124 INFO L146 ILogger]: Checked inductivity of 51 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:30:31,153 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:31,154 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2019-05-23 11:30:31,155 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:30:31,155 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:30:31,155 INFO L146 ILogger]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:30:31,156 INFO L146 ILogger]: Start difference. First operand 159 states and 167 transitions. Second operand 24 states. [2019-05-23 11:30:32,104 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:32,104 INFO L146 ILogger]: Finished difference Result 241 states and 248 transitions. [2019-05-23 11:30:32,104 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:30:32,105 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 88 [2019-05-23 11:30:32,105 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:32,106 INFO L146 ILogger]: With dead ends: 241 [2019-05-23 11:30:32,106 INFO L146 ILogger]: Without dead ends: 196 [2019-05-23 11:30:32,107 INFO L146 ILogger]: 0 DeclaredPredicates, 129 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=327, Invalid=2223, Unknown=0, NotChecked=0, Total=2550 [2019-05-23 11:30:32,108 INFO L146 ILogger]: Start minimizeSevpa. Operand 196 states. [2019-05-23 11:30:32,116 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 196 to 158. [2019-05-23 11:30:32,116 INFO L146 ILogger]: Start removeUnreachable. Operand 158 states. [2019-05-23 11:30:32,117 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 158 states to 158 states and 164 transitions. [2019-05-23 11:30:32,117 INFO L146 ILogger]: Start accepts. Automaton has 158 states and 164 transitions. Word has length 88 [2019-05-23 11:30:32,117 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:32,117 INFO L146 ILogger]: Abstraction has 158 states and 164 transitions. [2019-05-23 11:30:32,118 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:30:32,118 INFO L146 ILogger]: Start isEmpty. Operand 158 states and 164 transitions. [2019-05-23 11:30:32,119 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 89 [2019-05-23 11:30:32,119 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:32,120 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:30:32,120 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:32,120 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:32,120 INFO L146 ILogger]: Analyzing trace with hash 861120772, now seen corresponding path program 7 times [2019-05-23 11:30:32,121 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:32,121 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:32,121 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:32,122 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:32,122 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:32,136 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:32,380 INFO L146 ILogger]: Checked inductivity of 51 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:30:32,380 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:32,380 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 11:30:32,390 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:32,427 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:32,428 INFO L146 ILogger]: Trace formula consists of 147 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:32,431 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:32,602 INFO L146 ILogger]: Checked inductivity of 51 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:30:32,622 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:32,622 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:32,623 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:32,623 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:32,623 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:32,624 INFO L146 ILogger]: Start difference. First operand 158 states and 164 transitions. Second operand 20 states. [2019-05-23 11:30:33,004 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:33,004 INFO L146 ILogger]: Finished difference Result 185 states and 190 transitions. [2019-05-23 11:30:33,004 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:30:33,005 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 88 [2019-05-23 11:30:33,005 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:33,006 INFO L146 ILogger]: With dead ends: 185 [2019-05-23 11:30:33,006 INFO L146 ILogger]: Without dead ends: 124 [2019-05-23 11:30:33,007 INFO L146 ILogger]: 0 DeclaredPredicates, 110 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:30:33,007 INFO L146 ILogger]: Start minimizeSevpa. Operand 124 states. [2019-05-23 11:30:33,012 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 124 to 119. [2019-05-23 11:30:33,013 INFO L146 ILogger]: Start removeUnreachable. Operand 119 states. [2019-05-23 11:30:33,013 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 119 states to 119 states and 123 transitions. [2019-05-23 11:30:33,013 INFO L146 ILogger]: Start accepts. Automaton has 119 states and 123 transitions. Word has length 88 [2019-05-23 11:30:33,014 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:33,014 INFO L146 ILogger]: Abstraction has 119 states and 123 transitions. [2019-05-23 11:30:33,014 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:33,014 INFO L146 ILogger]: Start isEmpty. Operand 119 states and 123 transitions. [2019-05-23 11:30:33,015 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 89 [2019-05-23 11:30:33,015 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:33,016 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:30:33,016 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:33,016 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:33,016 INFO L146 ILogger]: Analyzing trace with hash -1045320245, now seen corresponding path program 8 times [2019-05-23 11:30:33,017 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:33,017 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:33,017 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:33,018 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:33,018 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:33,026 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:33,386 INFO L146 ILogger]: Checked inductivity of 51 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:30:33,387 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:33,387 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:30:33,397 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:30:33,420 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:30:33,420 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:33,421 INFO L146 ILogger]: Trace formula consists of 147 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:33,422 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:33,540 INFO L146 ILogger]: Checked inductivity of 51 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:30:33,562 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:33,562 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:33,563 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:33,563 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:33,564 INFO L146 ILogger]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:33,565 INFO L146 ILogger]: Start difference. First operand 119 states and 123 transitions. Second operand 20 states. [2019-05-23 11:30:34,073 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:34,074 INFO L146 ILogger]: Finished difference Result 199 states and 206 transitions. [2019-05-23 11:30:34,074 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:30:34,074 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 88 [2019-05-23 11:30:34,075 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:34,076 INFO L146 ILogger]: With dead ends: 199 [2019-05-23 11:30:34,076 INFO L146 ILogger]: Without dead ends: 131 [2019-05-23 11:30:34,077 INFO L146 ILogger]: 0 DeclaredPredicates, 116 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=232, Invalid=1028, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:30:34,077 INFO L146 ILogger]: Start minimizeSevpa. Operand 131 states. [2019-05-23 11:30:34,081 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 131 to 126. [2019-05-23 11:30:34,081 INFO L146 ILogger]: Start removeUnreachable. Operand 126 states. [2019-05-23 11:30:34,081 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 126 states to 126 states and 130 transitions. [2019-05-23 11:30:34,082 INFO L146 ILogger]: Start accepts. Automaton has 126 states and 130 transitions. Word has length 88 [2019-05-23 11:30:34,082 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:34,082 INFO L146 ILogger]: Abstraction has 126 states and 130 transitions. [2019-05-23 11:30:34,082 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:34,082 INFO L146 ILogger]: Start isEmpty. Operand 126 states and 130 transitions. [2019-05-23 11:30:34,083 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 96 [2019-05-23 11:30:34,083 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:34,084 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:30:34,084 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:34,084 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:34,084 INFO L146 ILogger]: Analyzing trace with hash 738240023, now seen corresponding path program 9 times [2019-05-23 11:30:34,085 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:34,085 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:34,085 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:34,086 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:34,086 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:34,095 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:34,335 INFO L146 ILogger]: Checked inductivity of 66 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-05-23 11:30:34,335 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:34,335 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 11:30:34,344 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:30:34,371 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:30:34,371 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:34,372 INFO L146 ILogger]: Trace formula consists of 158 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:34,374 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:34,582 INFO L146 ILogger]: Checked inductivity of 66 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-05-23 11:30:34,601 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:34,601 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2019-05-23 11:30:34,602 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:30:34,602 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:30:34,602 INFO L146 ILogger]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:30:34,603 INFO L146 ILogger]: Start difference. First operand 126 states and 130 transitions. Second operand 21 states. [2019-05-23 11:30:35,471 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:35,471 INFO L146 ILogger]: Finished difference Result 137 states and 140 transitions. [2019-05-23 11:30:35,472 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:30:35,472 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 95 [2019-05-23 11:30:35,472 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:35,473 INFO L146 ILogger]: With dead ends: 137 [2019-05-23 11:30:35,473 INFO L146 ILogger]: Without dead ends: 115 [2019-05-23 11:30:35,475 INFO L146 ILogger]: 0 DeclaredPredicates, 136 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=352, Invalid=1904, Unknown=0, NotChecked=0, Total=2256 [2019-05-23 11:30:35,475 INFO L146 ILogger]: Start minimizeSevpa. Operand 115 states. [2019-05-23 11:30:35,478 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 115 to 110. [2019-05-23 11:30:35,478 INFO L146 ILogger]: Start removeUnreachable. Operand 110 states. [2019-05-23 11:30:35,479 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 110 states to 110 states and 113 transitions. [2019-05-23 11:30:35,479 INFO L146 ILogger]: Start accepts. Automaton has 110 states and 113 transitions. Word has length 95 [2019-05-23 11:30:35,479 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:35,480 INFO L146 ILogger]: Abstraction has 110 states and 113 transitions. [2019-05-23 11:30:35,480 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:30:35,480 INFO L146 ILogger]: Start isEmpty. Operand 110 states and 113 transitions. [2019-05-23 11:30:35,480 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 110 [2019-05-23 11:30:35,480 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:35,481 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:35,481 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:35,481 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:35,481 INFO L146 ILogger]: Analyzing trace with hash -105643856, now seen corresponding path program 10 times [2019-05-23 11:30:35,481 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:35,482 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:35,482 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:35,482 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:35,482 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:35,503 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:36,227 WARN L146 ILogger]: Spent 144.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 17 [2019-05-23 11:30:39,113 INFO L146 ILogger]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:30:39,113 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:39,113 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 11:30:39,122 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:30:39,152 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:30:39,152 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:39,154 WARN L146 ILogger]: Trace formula consists of 178 conjuncts, 98 conjunts are in the unsatisfiable core [2019-05-23 11:30:39,156 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:41,407 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2019-05-23 11:30:41,408 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:30:41,410 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:30:41,411 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:30:41,411 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2019-05-23 11:30:41,734 INFO L146 ILogger]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:30:41,752 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:41,752 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 48] total 67 [2019-05-23 11:30:41,753 INFO L146 ILogger]: Interpolant automaton has 67 states [2019-05-23 11:30:41,753 INFO L146 ILogger]: Constructing interpolant automaton starting with 67 interpolants. [2019-05-23 11:30:41,754 INFO L146 ILogger]: CoverageRelationStatistics Valid=232, Invalid=4190, Unknown=0, NotChecked=0, Total=4422 [2019-05-23 11:30:41,755 INFO L146 ILogger]: Start difference. First operand 110 states and 113 transitions. Second operand 67 states. [2019-05-23 11:30:46,605 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:46,605 INFO L146 ILogger]: Finished difference Result 200 states and 206 transitions. [2019-05-23 11:30:46,605 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-05-23 11:30:46,606 INFO L146 ILogger]: Start accepts. Automaton has 67 states. Word has length 109 [2019-05-23 11:30:46,606 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:46,608 INFO L146 ILogger]: With dead ends: 200 [2019-05-23 11:30:46,608 INFO L146 ILogger]: Without dead ends: 194 [2019-05-23 11:30:46,611 INFO L146 ILogger]: 0 DeclaredPredicates, 180 GetRequests, 78 SyntacticMatches, 17 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1807 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=354, Invalid=7128, Unknown=0, NotChecked=0, Total=7482 [2019-05-23 11:30:46,611 INFO L146 ILogger]: Start minimizeSevpa. Operand 194 states. [2019-05-23 11:30:46,615 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 194 to 171. [2019-05-23 11:30:46,615 INFO L146 ILogger]: Start removeUnreachable. Operand 171 states. [2019-05-23 11:30:46,616 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 171 states to 171 states and 177 transitions. [2019-05-23 11:30:46,616 INFO L146 ILogger]: Start accepts. Automaton has 171 states and 177 transitions. Word has length 109 [2019-05-23 11:30:46,616 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:46,616 INFO L146 ILogger]: Abstraction has 171 states and 177 transitions. [2019-05-23 11:30:46,617 INFO L146 ILogger]: Interpolant automaton has 67 states. [2019-05-23 11:30:46,617 INFO L146 ILogger]: Start isEmpty. Operand 171 states and 177 transitions. [2019-05-23 11:30:46,617 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 117 [2019-05-23 11:30:46,617 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:46,618 INFO L146 ILogger]: trace histogram [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, 1, 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 11:30:46,618 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:46,618 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:46,618 INFO L146 ILogger]: Analyzing trace with hash 1508500484, now seen corresponding path program 11 times [2019-05-23 11:30:46,618 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:46,619 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:46,619 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:46,619 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:46,620 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:46,631 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:46,841 INFO L146 ILogger]: Checked inductivity of 118 backedges. 33 proven. 37 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:30:46,842 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:46,842 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 11:30:46,850 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:30:46,877 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2019-05-23 11:30:46,877 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:46,878 INFO L146 ILogger]: Trace formula consists of 191 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:30:46,880 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:47,054 INFO L146 ILogger]: Checked inductivity of 118 backedges. 46 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:30:47,072 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:47,072 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 28 [2019-05-23 11:30:47,073 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:30:47,073 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:30:47,074 INFO L146 ILogger]: CoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:30:47,074 INFO L146 ILogger]: Start difference. First operand 171 states and 177 transitions. Second operand 28 states. [2019-05-23 11:30:47,889 WARN L146 ILogger]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2019-05-23 11:30:48,384 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:48,385 INFO L146 ILogger]: Finished difference Result 275 states and 284 transitions. [2019-05-23 11:30:48,385 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2019-05-23 11:30:48,385 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 116 [2019-05-23 11:30:48,386 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:48,388 INFO L146 ILogger]: With dead ends: 275 [2019-05-23 11:30:48,388 INFO L146 ILogger]: Without dead ends: 239 [2019-05-23 11:30:48,390 INFO L146 ILogger]: 0 DeclaredPredicates, 163 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 923 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=460, Invalid=2846, Unknown=0, NotChecked=0, Total=3306 [2019-05-23 11:30:48,390 INFO L146 ILogger]: Start minimizeSevpa. Operand 239 states. [2019-05-23 11:30:48,396 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 239 to 208. [2019-05-23 11:30:48,396 INFO L146 ILogger]: Start removeUnreachable. Operand 208 states. [2019-05-23 11:30:48,397 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 208 states to 208 states and 216 transitions. [2019-05-23 11:30:48,397 INFO L146 ILogger]: Start accepts. Automaton has 208 states and 216 transitions. Word has length 116 [2019-05-23 11:30:48,398 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:48,398 INFO L146 ILogger]: Abstraction has 208 states and 216 transitions. [2019-05-23 11:30:48,398 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:30:48,398 INFO L146 ILogger]: Start isEmpty. Operand 208 states and 216 transitions. [2019-05-23 11:30:48,399 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 117 [2019-05-23 11:30:48,399 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:48,399 INFO L146 ILogger]: trace histogram [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, 1, 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 11:30:48,399 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:48,400 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:48,400 INFO L146 ILogger]: Analyzing trace with hash 2127357277, now seen corresponding path program 12 times [2019-05-23 11:30:48,400 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:48,400 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:48,401 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:48,401 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:48,401 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:48,411 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:48,570 INFO L146 ILogger]: Checked inductivity of 118 backedges. 33 proven. 37 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:30:48,570 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:48,570 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 11:30:48,578 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:30:48,609 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:30:48,610 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:48,610 INFO L146 ILogger]: Trace formula consists of 191 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:30:48,612 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:48,771 INFO L146 ILogger]: Checked inductivity of 118 backedges. 46 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:30:48,795 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:48,796 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 26 [2019-05-23 11:30:48,796 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:30:48,796 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:30:48,797 INFO L146 ILogger]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:30:48,797 INFO L146 ILogger]: Start difference. First operand 208 states and 216 transitions. Second operand 26 states. [2019-05-23 11:30:49,330 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:49,331 INFO L146 ILogger]: Finished difference Result 353 states and 364 transitions. [2019-05-23 11:30:49,331 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-05-23 11:30:49,331 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 116 [2019-05-23 11:30:49,332 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:49,333 INFO L146 ILogger]: With dead ends: 353 [2019-05-23 11:30:49,333 INFO L146 ILogger]: Without dead ends: 264 [2019-05-23 11:30:49,334 INFO L146 ILogger]: 0 DeclaredPredicates, 149 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=288, Invalid=1518, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:30:49,334 INFO L146 ILogger]: Start minimizeSevpa. Operand 264 states. [2019-05-23 11:30:49,341 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 264 to 230. [2019-05-23 11:30:49,341 INFO L146 ILogger]: Start removeUnreachable. Operand 230 states. [2019-05-23 11:30:49,342 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 230 states to 230 states and 238 transitions. [2019-05-23 11:30:49,342 INFO L146 ILogger]: Start accepts. Automaton has 230 states and 238 transitions. Word has length 116 [2019-05-23 11:30:49,342 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:49,343 INFO L146 ILogger]: Abstraction has 230 states and 238 transitions. [2019-05-23 11:30:49,343 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:30:49,343 INFO L146 ILogger]: Start isEmpty. Operand 230 states and 238 transitions. [2019-05-23 11:30:49,344 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 117 [2019-05-23 11:30:49,344 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:49,344 INFO L146 ILogger]: trace histogram [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, 1, 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 11:30:49,344 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:49,344 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:49,345 INFO L146 ILogger]: Analyzing trace with hash 681799652, now seen corresponding path program 13 times [2019-05-23 11:30:49,345 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:49,345 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:49,345 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:49,346 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:49,346 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:49,354 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:49,542 INFO L146 ILogger]: Checked inductivity of 118 backedges. 33 proven. 37 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:30:49,542 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:49,542 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 11:30:49,550 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:49,579 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:49,580 INFO L146 ILogger]: Trace formula consists of 191 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:30:49,581 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:49,727 INFO L146 ILogger]: Checked inductivity of 118 backedges. 46 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:30:49,745 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:49,745 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 26 [2019-05-23 11:30:49,746 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:30:49,746 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:30:49,746 INFO L146 ILogger]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:30:49,746 INFO L146 ILogger]: Start difference. First operand 230 states and 238 transitions. Second operand 26 states. [2019-05-23 11:30:50,225 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:50,225 INFO L146 ILogger]: Finished difference Result 264 states and 271 transitions. [2019-05-23 11:30:50,226 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-05-23 11:30:50,226 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 116 [2019-05-23 11:30:50,226 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:50,227 INFO L146 ILogger]: With dead ends: 264 [2019-05-23 11:30:50,227 INFO L146 ILogger]: Without dead ends: 182 [2019-05-23 11:30:50,228 INFO L146 ILogger]: 0 DeclaredPredicates, 147 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=267, Invalid=1373, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:30:50,228 INFO L146 ILogger]: Start minimizeSevpa. Operand 182 states. [2019-05-23 11:30:50,233 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 182 to 177. [2019-05-23 11:30:50,233 INFO L146 ILogger]: Start removeUnreachable. Operand 177 states. [2019-05-23 11:30:50,233 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 177 states to 177 states and 183 transitions. [2019-05-23 11:30:50,234 INFO L146 ILogger]: Start accepts. Automaton has 177 states and 183 transitions. Word has length 116 [2019-05-23 11:30:50,234 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:50,234 INFO L146 ILogger]: Abstraction has 177 states and 183 transitions. [2019-05-23 11:30:50,234 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:30:50,234 INFO L146 ILogger]: Start isEmpty. Operand 177 states and 183 transitions. [2019-05-23 11:30:50,235 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 117 [2019-05-23 11:30:50,235 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:50,235 INFO L146 ILogger]: trace histogram [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, 1, 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 11:30:50,235 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:50,236 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:50,236 INFO L146 ILogger]: Analyzing trace with hash -1981547139, now seen corresponding path program 14 times [2019-05-23 11:30:50,236 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:50,236 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:50,237 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:50,237 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:50,237 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:50,245 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:50,644 INFO L146 ILogger]: Checked inductivity of 118 backedges. 11 proven. 59 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:30:50,644 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:50,644 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 11:30:50,653 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:30:50,681 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:30:50,681 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:50,682 INFO L146 ILogger]: Trace formula consists of 191 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:30:50,684 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:50,834 INFO L146 ILogger]: Checked inductivity of 118 backedges. 24 proven. 46 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:30:50,852 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:50,852 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 26 [2019-05-23 11:30:50,853 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:30:50,853 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:30:50,853 INFO L146 ILogger]: CoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:30:50,854 INFO L146 ILogger]: Start difference. First operand 177 states and 183 transitions. Second operand 26 states. [2019-05-23 11:30:51,440 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:51,441 INFO L146 ILogger]: Finished difference Result 211 states and 216 transitions. [2019-05-23 11:30:51,441 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:30:51,441 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 116 [2019-05-23 11:30:51,442 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:51,443 INFO L146 ILogger]: With dead ends: 211 [2019-05-23 11:30:51,443 INFO L146 ILogger]: Without dead ends: 159 [2019-05-23 11:30:51,445 INFO L146 ILogger]: 0 DeclaredPredicates, 153 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=357, Invalid=1805, Unknown=0, NotChecked=0, Total=2162 [2019-05-23 11:30:51,445 INFO L146 ILogger]: Start minimizeSevpa. Operand 159 states. [2019-05-23 11:30:51,448 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 159 to 154. [2019-05-23 11:30:51,448 INFO L146 ILogger]: Start removeUnreachable. Operand 154 states. [2019-05-23 11:30:51,449 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 154 states to 154 states and 158 transitions. [2019-05-23 11:30:51,449 INFO L146 ILogger]: Start accepts. Automaton has 154 states and 158 transitions. Word has length 116 [2019-05-23 11:30:51,449 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:51,449 INFO L146 ILogger]: Abstraction has 154 states and 158 transitions. [2019-05-23 11:30:51,450 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:30:51,450 INFO L146 ILogger]: Start isEmpty. Operand 154 states and 158 transitions. [2019-05-23 11:30:51,450 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 124 [2019-05-23 11:30:51,450 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:51,451 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:51,451 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:51,451 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:51,451 INFO L146 ILogger]: Analyzing trace with hash -1391402377, now seen corresponding path program 15 times [2019-05-23 11:30:51,451 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:51,452 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:51,452 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:51,452 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:51,452 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:51,461 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:51,665 INFO L146 ILogger]: Checked inductivity of 140 backedges. 11 proven. 59 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-05-23 11:30:51,666 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:51,666 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 11:30:51,675 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:30:51,708 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:30:51,708 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:51,709 INFO L146 ILogger]: Trace formula consists of 202 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:30:51,712 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:51,867 INFO L146 ILogger]: Checked inductivity of 140 backedges. 24 proven. 46 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-05-23 11:30:51,884 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:51,885 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 28 [2019-05-23 11:30:51,885 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:30:51,885 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:30:51,886 INFO L146 ILogger]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:30:51,886 INFO L146 ILogger]: Start difference. First operand 154 states and 158 transitions. Second operand 28 states. [2019-05-23 11:30:52,753 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:52,753 INFO L146 ILogger]: Finished difference Result 165 states and 168 transitions. [2019-05-23 11:30:52,754 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-05-23 11:30:52,754 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 123 [2019-05-23 11:30:52,754 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:52,755 INFO L146 ILogger]: With dead ends: 165 [2019-05-23 11:30:52,756 INFO L146 ILogger]: Without dead ends: 136 [2019-05-23 11:30:52,757 INFO L146 ILogger]: 0 DeclaredPredicates, 173 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 976 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=512, Invalid=3028, Unknown=0, NotChecked=0, Total=3540 [2019-05-23 11:30:52,757 INFO L146 ILogger]: Start minimizeSevpa. Operand 136 states. [2019-05-23 11:30:52,760 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 136 to 131. [2019-05-23 11:30:52,761 INFO L146 ILogger]: Start removeUnreachable. Operand 131 states. [2019-05-23 11:30:52,761 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 131 states to 131 states and 134 transitions. [2019-05-23 11:30:52,761 INFO L146 ILogger]: Start accepts. Automaton has 131 states and 134 transitions. Word has length 123 [2019-05-23 11:30:52,762 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:52,762 INFO L146 ILogger]: Abstraction has 131 states and 134 transitions. [2019-05-23 11:30:52,762 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:30:52,762 INFO L146 ILogger]: Start isEmpty. Operand 131 states and 134 transitions. [2019-05-23 11:30:52,762 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 131 [2019-05-23 11:30:52,762 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:52,763 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:52,763 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:52,763 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:52,763 INFO L146 ILogger]: Analyzing trace with hash 879412662, now seen corresponding path program 16 times [2019-05-23 11:30:52,763 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:52,764 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:52,764 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:52,764 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:52,764 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:52,774 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:52,970 INFO L146 ILogger]: Checked inductivity of 162 backedges. 11 proven. 59 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-05-23 11:30:52,970 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:52,970 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 11:30:52,979 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:30:53,007 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:30:53,007 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:53,008 INFO L146 ILogger]: Trace formula consists of 211 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:30:53,009 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:53,477 INFO L146 ILogger]: Checked inductivity of 162 backedges. 24 proven. 46 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-05-23 11:30:53,495 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:53,495 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 28 [2019-05-23 11:30:53,495 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:30:53,496 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:30:53,496 INFO L146 ILogger]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:30:53,496 INFO L146 ILogger]: Start difference. First operand 131 states and 134 transitions. Second operand 28 states. [2019-05-23 11:30:54,765 WARN L146 ILogger]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2019-05-23 11:30:54,941 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:54,941 INFO L146 ILogger]: Finished difference Result 149 states and 152 transitions. [2019-05-23 11:30:54,944 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-05-23 11:30:54,944 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 130 [2019-05-23 11:30:54,944 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:54,945 INFO L146 ILogger]: With dead ends: 149 [2019-05-23 11:30:54,945 INFO L146 ILogger]: Without dead ends: 143 [2019-05-23 11:30:54,947 INFO L146 ILogger]: 0 DeclaredPredicates, 178 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=489, Invalid=2817, Unknown=0, NotChecked=0, Total=3306 [2019-05-23 11:30:54,947 INFO L146 ILogger]: Start minimizeSevpa. Operand 143 states. [2019-05-23 11:30:54,950 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 143 to 138. [2019-05-23 11:30:54,950 INFO L146 ILogger]: Start removeUnreachable. Operand 138 states. [2019-05-23 11:30:54,951 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 138 states to 138 states and 141 transitions. [2019-05-23 11:30:54,952 INFO L146 ILogger]: Start accepts. Automaton has 138 states and 141 transitions. Word has length 130 [2019-05-23 11:30:54,952 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:54,952 INFO L146 ILogger]: Abstraction has 138 states and 141 transitions. [2019-05-23 11:30:54,952 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:30:54,952 INFO L146 ILogger]: Start isEmpty. Operand 138 states and 141 transitions. [2019-05-23 11:30:54,953 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 138 [2019-05-23 11:30:54,953 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:54,953 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:54,954 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:54,954 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:54,954 INFO L146 ILogger]: Analyzing trace with hash 2101513278, now seen corresponding path program 17 times [2019-05-23 11:30:54,954 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:54,954 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:54,955 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:54,955 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:54,955 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:54,993 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:00,006 INFO L146 ILogger]: Checked inductivity of 184 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:31:00,007 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:31:00,007 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 11:31:00,015 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:31:00,051 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2019-05-23 11:31:00,052 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:00,054 WARN L146 ILogger]: Trace formula consists of 224 conjuncts, 130 conjunts are in the unsatisfiable core [2019-05-23 11:31:00,056 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:03,243 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2019-05-23 11:31:03,244 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:31:03,251 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:31:03,251 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:31:03,252 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2019-05-23 11:31:03,496 INFO L146 ILogger]: Checked inductivity of 184 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:31:03,515 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:31:03,515 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 64] total 91 [2019-05-23 11:31:03,516 INFO L146 ILogger]: Interpolant automaton has 91 states [2019-05-23 11:31:03,516 INFO L146 ILogger]: Constructing interpolant automaton starting with 91 interpolants. [2019-05-23 11:31:03,518 INFO L146 ILogger]: CoverageRelationStatistics Valid=318, Invalid=7872, Unknown=0, NotChecked=0, Total=8190 [2019-05-23 11:31:03,518 INFO L146 ILogger]: Start difference. First operand 138 states and 141 transitions. Second operand 91 states. [2019-05-23 11:31:11,418 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:11,418 INFO L146 ILogger]: Finished difference Result 249 states and 255 transitions. [2019-05-23 11:31:11,419 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2019-05-23 11:31:11,419 INFO L146 ILogger]: Start accepts. Automaton has 91 states. Word has length 137 [2019-05-23 11:31:11,419 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:11,421 INFO L146 ILogger]: With dead ends: 249 [2019-05-23 11:31:11,421 INFO L146 ILogger]: Without dead ends: 243 [2019-05-23 11:31:11,422 INFO L146 ILogger]: 0 DeclaredPredicates, 232 GetRequests, 95 SyntacticMatches, 20 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3146 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=488, Invalid=13554, Unknown=0, NotChecked=0, Total=14042 [2019-05-23 11:31:11,423 INFO L146 ILogger]: Start minimizeSevpa. Operand 243 states. [2019-05-23 11:31:11,428 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 243 to 213. [2019-05-23 11:31:11,428 INFO L146 ILogger]: Start removeUnreachable. Operand 213 states. [2019-05-23 11:31:11,429 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 213 states to 213 states and 219 transitions. [2019-05-23 11:31:11,429 INFO L146 ILogger]: Start accepts. Automaton has 213 states and 219 transitions. Word has length 137 [2019-05-23 11:31:11,429 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:11,429 INFO L146 ILogger]: Abstraction has 213 states and 219 transitions. [2019-05-23 11:31:11,429 INFO L146 ILogger]: Interpolant automaton has 91 states. [2019-05-23 11:31:11,429 INFO L146 ILogger]: Start isEmpty. Operand 213 states and 219 transitions. [2019-05-23 11:31:11,430 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 145 [2019-05-23 11:31:11,430 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:11,431 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:31:11,431 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:11,431 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:11,431 INFO L146 ILogger]: Analyzing trace with hash 1021303990, now seen corresponding path program 18 times [2019-05-23 11:31:11,431 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:11,431 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:11,432 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:11,432 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:31:11,432 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:11,446 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:12,101 INFO L146 ILogger]: Checked inductivity of 213 backedges. 56 proven. 65 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-05-23 11:31:12,101 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:31:12,101 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:31:12,110 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:31:12,147 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2019-05-23 11:31:12,147 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:12,148 INFO L146 ILogger]: Trace formula consists of 235 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:31:12,151 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:12,401 INFO L146 ILogger]: Checked inductivity of 213 backedges. 75 proven. 46 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-05-23 11:31:12,420 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:31:12,421 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 35 [2019-05-23 11:31:12,421 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:31:12,421 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:31:12,421 INFO L146 ILogger]: CoverageRelationStatistics Valid=154, Invalid=1036, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:31:12,422 INFO L146 ILogger]: Start difference. First operand 213 states and 219 transitions. Second operand 35 states. [2019-05-23 11:31:13,388 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:13,388 INFO L146 ILogger]: Finished difference Result 338 states and 347 transitions. [2019-05-23 11:31:13,389 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2019-05-23 11:31:13,389 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 144 [2019-05-23 11:31:13,389 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:13,391 INFO L146 ILogger]: With dead ends: 338 [2019-05-23 11:31:13,391 INFO L146 ILogger]: Without dead ends: 295 [2019-05-23 11:31:13,392 INFO L146 ILogger]: 0 DeclaredPredicates, 205 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1651 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=717, Invalid=4833, Unknown=0, NotChecked=0, Total=5550 [2019-05-23 11:31:13,393 INFO L146 ILogger]: Start minimizeSevpa. Operand 295 states. [2019-05-23 11:31:13,399 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 295 to 257. [2019-05-23 11:31:13,400 INFO L146 ILogger]: Start removeUnreachable. Operand 257 states. [2019-05-23 11:31:13,400 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 257 states to 257 states and 265 transitions. [2019-05-23 11:31:13,401 INFO L146 ILogger]: Start accepts. Automaton has 257 states and 265 transitions. Word has length 144 [2019-05-23 11:31:13,401 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:13,401 INFO L146 ILogger]: Abstraction has 257 states and 265 transitions. [2019-05-23 11:31:13,401 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:31:13,401 INFO L146 ILogger]: Start isEmpty. Operand 257 states and 265 transitions. [2019-05-23 11:31:13,402 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 145 [2019-05-23 11:31:13,402 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:13,402 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:31:13,403 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:13,403 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:13,403 INFO L146 ILogger]: Analyzing trace with hash 1628591421, now seen corresponding path program 19 times [2019-05-23 11:31:13,403 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:13,403 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:13,404 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:13,404 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:31:13,404 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:13,416 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:13,675 INFO L146 ILogger]: Checked inductivity of 213 backedges. 56 proven. 65 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-05-23 11:31:13,675 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:31:13,676 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:31:13,684 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:31:13,719 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:13,720 INFO L146 ILogger]: Trace formula consists of 235 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:31:13,721 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:13,921 INFO L146 ILogger]: Checked inductivity of 213 backedges. 75 proven. 46 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-05-23 11:31:13,939 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:31:13,939 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 32 [2019-05-23 11:31:13,940 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:31:13,940 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:31:13,940 INFO L146 ILogger]: CoverageRelationStatistics Valid=146, Invalid=846, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:31:13,940 INFO L146 ILogger]: Start difference. First operand 257 states and 265 transitions. Second operand 32 states. [2019-05-23 11:31:14,567 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:14,567 INFO L146 ILogger]: Finished difference Result 437 states and 448 transitions. [2019-05-23 11:31:14,571 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-05-23 11:31:14,571 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 144 [2019-05-23 11:31:14,571 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:14,572 INFO L146 ILogger]: With dead ends: 437 [2019-05-23 11:31:14,572 INFO L146 ILogger]: Without dead ends: 327 [2019-05-23 11:31:14,573 INFO L146 ILogger]: 0 DeclaredPredicates, 186 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=431, Invalid=2431, Unknown=0, NotChecked=0, Total=2862 [2019-05-23 11:31:14,573 INFO L146 ILogger]: Start minimizeSevpa. Operand 327 states. [2019-05-23 11:31:14,580 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 327 to 286. [2019-05-23 11:31:14,580 INFO L146 ILogger]: Start removeUnreachable. Operand 286 states. [2019-05-23 11:31:14,580 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 286 states to 286 states and 294 transitions. [2019-05-23 11:31:14,581 INFO L146 ILogger]: Start accepts. Automaton has 286 states and 294 transitions. Word has length 144 [2019-05-23 11:31:14,581 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:14,581 INFO L146 ILogger]: Abstraction has 286 states and 294 transitions. [2019-05-23 11:31:14,581 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:31:14,581 INFO L146 ILogger]: Start isEmpty. Operand 286 states and 294 transitions. [2019-05-23 11:31:14,582 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 145 [2019-05-23 11:31:14,582 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:14,582 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:31:14,583 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:14,583 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:14,583 INFO L146 ILogger]: Analyzing trace with hash -966498428, now seen corresponding path program 20 times [2019-05-23 11:31:14,583 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:14,583 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:14,584 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:14,584 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:31:14,584 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:14,595 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:14,836 INFO L146 ILogger]: Checked inductivity of 213 backedges. 56 proven. 65 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-05-23 11:31:14,837 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:31:14,837 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:31:14,845 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:31:14,905 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:31:14,905 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:14,906 INFO L146 ILogger]: Trace formula consists of 235 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:31:14,909 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:15,135 INFO L146 ILogger]: Checked inductivity of 213 backedges. 75 proven. 46 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-05-23 11:31:15,154 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:31:15,154 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 32 [2019-05-23 11:31:15,155 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:31:15,155 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:31:15,155 INFO L146 ILogger]: CoverageRelationStatistics Valid=146, Invalid=846, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:31:15,155 INFO L146 ILogger]: Start difference. First operand 286 states and 294 transitions. Second operand 32 states. [2019-05-23 11:31:15,816 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:15,817 INFO L146 ILogger]: Finished difference Result 327 states and 334 transitions. [2019-05-23 11:31:15,817 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:31:15,817 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 144 [2019-05-23 11:31:15,817 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:15,818 INFO L146 ILogger]: With dead ends: 327 [2019-05-23 11:31:15,818 INFO L146 ILogger]: Without dead ends: 224 [2019-05-23 11:31:15,819 INFO L146 ILogger]: 0 DeclaredPredicates, 184 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=407, Invalid=2245, Unknown=0, NotChecked=0, Total=2652 [2019-05-23 11:31:15,819 INFO L146 ILogger]: Start minimizeSevpa. Operand 224 states. [2019-05-23 11:31:15,824 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 224 to 219. [2019-05-23 11:31:15,825 INFO L146 ILogger]: Start removeUnreachable. Operand 219 states. [2019-05-23 11:31:15,825 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 219 states to 219 states and 225 transitions. [2019-05-23 11:31:15,825 INFO L146 ILogger]: Start accepts. Automaton has 219 states and 225 transitions. Word has length 144 [2019-05-23 11:31:15,825 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:15,825 INFO L146 ILogger]: Abstraction has 219 states and 225 transitions. [2019-05-23 11:31:15,826 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:31:15,826 INFO L146 ILogger]: Start isEmpty. Operand 219 states and 225 transitions. [2019-05-23 11:31:15,826 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 145 [2019-05-23 11:31:15,826 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:15,827 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:31:15,827 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:15,827 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:15,827 INFO L146 ILogger]: Analyzing trace with hash -1160084597, now seen corresponding path program 21 times [2019-05-23 11:31:15,827 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:15,827 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:15,828 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:15,828 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:31:15,828 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:15,838 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:16,332 INFO L146 ILogger]: Checked inductivity of 213 backedges. 27 proven. 94 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-05-23 11:31:16,332 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:31:16,332 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:31:16,341 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:31:16,377 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-05-23 11:31:16,377 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:16,379 INFO L146 ILogger]: Trace formula consists of 235 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:31:16,381 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:16,617 INFO L146 ILogger]: Checked inductivity of 213 backedges. 46 proven. 75 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-05-23 11:31:16,635 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:31:16,636 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 32 [2019-05-23 11:31:16,636 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:31:16,636 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:31:16,636 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=849, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:31:16,637 INFO L146 ILogger]: Start difference. First operand 219 states and 225 transitions. Second operand 32 states.