java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-examples/standard_running_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:19:22,707 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:19:22,709 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:19:22,727 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:19:22,727 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:19:22,728 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:19:22,731 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:19:22,733 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:19:22,735 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:19:22,736 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:19:22,744 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:19:22,744 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:19:22,745 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:19:22,748 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:19:22,749 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:19:22,750 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:19:22,753 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:19:22,755 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:19:22,760 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:19:22,762 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:19:22,764 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:19:22,767 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:19:22,769 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:19:22,769 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:19:22,769 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:19:22,771 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:19:22,771 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:19:22,774 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:19:22,774 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:19:22,775 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:19:22,777 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:19:22,778 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:19:22,780 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:19:22,780 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:19:22,781 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:19:22,781 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:19:22,781 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:19:22,783 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:19:22,784 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:19:22,784 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:19:22,813 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:19:22,814 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:19:22,815 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:19:22,815 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:19:22,815 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:19:22,816 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:19:22,816 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:19:22,816 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:19:22,816 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:19:22,816 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:19:22,817 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:19:22,817 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:19:22,817 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:19:22,817 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:19:22,818 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:19:22,818 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:19:22,818 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:19:22,818 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:19:22,819 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:19:22,819 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:19:22,819 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:19:22,819 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:19:22,819 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:19:22,820 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:19:22,823 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:19:22,823 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:19:22,824 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:19:22,824 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:19:22,824 INFO L146 ILogger]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Command for external solver -> z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement [2019-05-23 11:19:22,855 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:19:22,868 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:19:22,871 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:19:22,873 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:19:22,873 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:19:22,874 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_running_true-unreach-call.i [2019-05-23 11:19:22,930 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/013e74588/01608459a4894fe8b281ea22887e038a/FLAGffc7af628 [2019-05-23 11:19:23,342 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:19:23,343 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_running_true-unreach-call.i [2019-05-23 11:19:23,349 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/013e74588/01608459a4894fe8b281ea22887e038a/FLAGffc7af628 [2019-05-23 11:19:23,717 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/013e74588/01608459a4894fe8b281ea22887e038a [2019-05-23 11:19:23,726 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:19:23,728 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:19:23,728 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:19:23,729 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:19:23,735 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:19:23,736 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:19:23" (1/1) ... [2019-05-23 11:19:23,739 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19a25143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:23, skipping insertion in model container [2019-05-23 11:19:23,739 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:19:23" (1/1) ... [2019-05-23 11:19:23,747 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:19:23,764 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:19:23,956 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:19:23,966 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:19:23,996 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:19:24,019 INFO L146 ILogger]: Completed translation [2019-05-23 11:19:24,019 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:24 WrapperNode [2019-05-23 11:19:24,019 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:19:24,020 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:19:24,021 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:19:24,021 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:19:24,031 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:24" (1/1) ... [2019-05-23 11:19:24,040 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:24" (1/1) ... [2019-05-23 11:19:24,064 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:19:24,065 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:19:24,065 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:19:24,065 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:19:24,077 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:24" (1/1) ... [2019-05-23 11:19:24,077 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:24" (1/1) ... [2019-05-23 11:19:24,079 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:24" (1/1) ... [2019-05-23 11:19:24,079 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:24" (1/1) ... [2019-05-23 11:19:24,085 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:24" (1/1) ... [2019-05-23 11:19:24,192 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:24" (1/1) ... [2019-05-23 11:19:24,197 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:24" (1/1) ... [2019-05-23 11:19:24,203 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:19:24,203 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:19:24,203 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:19:24,203 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:19:24,208 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 [2019-05-23 11:19:24,273 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:19:24,274 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:19:24,274 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:19:24,274 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:19:24,274 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:19:24,274 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:19:24,743 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:19:24,743 INFO L146 ILogger]: Removed 8 assume(true) statements. [2019-05-23 11:19:24,745 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:19:24 BoogieIcfgContainer [2019-05-23 11:19:24,745 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:19:24,746 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:19:24,746 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:19:24,749 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:19:24,749 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:19:23" (1/3) ... [2019-05-23 11:19:24,750 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4912f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:19:24, skipping insertion in model container [2019-05-23 11:19:24,751 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:24" (2/3) ... [2019-05-23 11:19:24,751 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4912f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:19:24, skipping insertion in model container [2019-05-23 11:19:24,751 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:19:24" (3/3) ... [2019-05-23 11:19:24,753 INFO L146 ILogger]: Analyzing ICFG standard_running_true-unreach-call.i [2019-05-23 11:19:24,764 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:19:24,773 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:19:24,789 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:19:24,816 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:19:24,817 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:19:24,817 INFO L146 ILogger]: Hoare is true [2019-05-23 11:19:24,817 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:19:24,818 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:19:24,818 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:19:24,818 INFO L146 ILogger]: Difference is false [2019-05-23 11:19:24,818 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:19:24,818 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:19:24,835 INFO L146 ILogger]: Start isEmpty. Operand 59 states. [2019-05-23 11:19:24,841 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 17 [2019-05-23 11:19:24,842 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:24,842 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:24,844 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:24,849 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:24,849 INFO L146 ILogger]: Analyzing trace with hash -748285388, now seen corresponding path program 1 times [2019-05-23 11:19:24,851 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:24,851 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:24,895 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:24,896 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:24,896 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:24,937 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:24,976 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:24,978 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:19:24,979 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:19:24,982 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:19:24,991 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:19:24,992 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:19:24,994 INFO L146 ILogger]: Start difference. First operand 59 states. Second operand 2 states. [2019-05-23 11:19:25,013 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:25,013 INFO L146 ILogger]: Finished difference Result 103 states and 118 transitions. [2019-05-23 11:19:25,014 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:19:25,015 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 16 [2019-05-23 11:19:25,016 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:25,026 INFO L146 ILogger]: With dead ends: 103 [2019-05-23 11:19:25,026 INFO L146 ILogger]: Without dead ends: 51 [2019-05-23 11:19:25,030 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 11:19:25,048 INFO L146 ILogger]: Start minimizeSevpa. Operand 51 states. [2019-05-23 11:19:25,063 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 51 to 51. [2019-05-23 11:19:25,064 INFO L146 ILogger]: Start removeUnreachable. Operand 51 states. [2019-05-23 11:19:25,066 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2019-05-23 11:19:25,067 INFO L146 ILogger]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 16 [2019-05-23 11:19:25,068 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:25,068 INFO L146 ILogger]: Abstraction has 51 states and 57 transitions. [2019-05-23 11:19:25,068 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:19:25,068 INFO L146 ILogger]: Start isEmpty. Operand 51 states and 57 transitions. [2019-05-23 11:19:25,069 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 17 [2019-05-23 11:19:25,069 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:25,069 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:25,070 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:25,070 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:25,070 INFO L146 ILogger]: Analyzing trace with hash -1893785052, now seen corresponding path program 1 times [2019-05-23 11:19:25,071 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:25,071 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:25,072 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:25,072 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:25,072 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:25,087 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:25,176 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:25,177 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:19:25,177 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:19:25,179 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:19:25,179 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:19:25,179 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:19:25,180 INFO L146 ILogger]: Start difference. First operand 51 states and 57 transitions. Second operand 3 states. [2019-05-23 11:19:25,496 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:25,497 INFO L146 ILogger]: Finished difference Result 123 states and 140 transitions. [2019-05-23 11:19:25,497 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:19:25,497 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 16 [2019-05-23 11:19:25,498 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:25,499 INFO L146 ILogger]: With dead ends: 123 [2019-05-23 11:19:25,499 INFO L146 ILogger]: Without dead ends: 87 [2019-05-23 11:19:25,501 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:19:25,501 INFO L146 ILogger]: Start minimizeSevpa. Operand 87 states. [2019-05-23 11:19:25,508 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 87 to 53. [2019-05-23 11:19:25,508 INFO L146 ILogger]: Start removeUnreachable. Operand 53 states. [2019-05-23 11:19:25,509 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2019-05-23 11:19:25,510 INFO L146 ILogger]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 16 [2019-05-23 11:19:25,510 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:25,510 INFO L146 ILogger]: Abstraction has 53 states and 59 transitions. [2019-05-23 11:19:25,510 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:19:25,510 INFO L146 ILogger]: Start isEmpty. Operand 53 states and 59 transitions. [2019-05-23 11:19:25,512 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 39 [2019-05-23 11:19:25,512 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:25,512 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:25,512 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:25,512 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:25,513 INFO L146 ILogger]: Analyzing trace with hash 1754040756, now seen corresponding path program 1 times [2019-05-23 11:19:25,513 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:25,513 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:25,514 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:25,514 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:25,515 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:25,542 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:25,914 INFO L146 ILogger]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:19:25,914 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:19:25,915 INFO L146 ILogger]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-05-23 11:19:25,915 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:19:25,915 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:19:25,916 INFO L146 ILogger]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:19:25,916 INFO L146 ILogger]: Start difference. First operand 53 states and 59 transitions. Second operand 7 states. [2019-05-23 11:19:26,321 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:26,322 INFO L146 ILogger]: Finished difference Result 109 states and 122 transitions. [2019-05-23 11:19:26,323 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:19:26,324 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 38 [2019-05-23 11:19:26,324 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:26,325 INFO L146 ILogger]: With dead ends: 109 [2019-05-23 11:19:26,325 INFO L146 ILogger]: Without dead ends: 75 [2019-05-23 11:19:26,326 INFO L146 ILogger]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:19:26,327 INFO L146 ILogger]: Start minimizeSevpa. Operand 75 states. [2019-05-23 11:19:26,334 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 75 to 64. [2019-05-23 11:19:26,334 INFO L146 ILogger]: Start removeUnreachable. Operand 64 states. [2019-05-23 11:19:26,335 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 64 states to 64 states and 71 transitions. [2019-05-23 11:19:26,335 INFO L146 ILogger]: Start accepts. Automaton has 64 states and 71 transitions. Word has length 38 [2019-05-23 11:19:26,336 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:26,336 INFO L146 ILogger]: Abstraction has 64 states and 71 transitions. [2019-05-23 11:19:26,336 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:19:26,336 INFO L146 ILogger]: Start isEmpty. Operand 64 states and 71 transitions. [2019-05-23 11:19:26,337 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 41 [2019-05-23 11:19:26,338 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:26,338 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:26,338 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:26,339 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:26,339 INFO L146 ILogger]: Analyzing trace with hash -2101473673, now seen corresponding path program 1 times [2019-05-23 11:19:26,339 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:26,339 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:26,340 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:26,341 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:26,341 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:26,355 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:26,434 INFO L146 ILogger]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-05-23 11:19:26,434 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:19:26,434 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:19:26,435 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:19:26,435 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:19:26,436 INFO L146 ILogger]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:19:26,436 INFO L146 ILogger]: Start difference. First operand 64 states and 71 transitions. Second operand 5 states. [2019-05-23 11:19:26,545 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:26,545 INFO L146 ILogger]: Finished difference Result 109 states and 121 transitions. [2019-05-23 11:19:26,546 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:19:26,546 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 40 [2019-05-23 11:19:26,547 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:26,549 INFO L146 ILogger]: With dead ends: 109 [2019-05-23 11:19:26,549 INFO L146 ILogger]: Without dead ends: 103 [2019-05-23 11:19:26,550 INFO L146 ILogger]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:19:26,551 INFO L146 ILogger]: Start minimizeSevpa. Operand 103 states. [2019-05-23 11:19:26,557 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 103 to 90. [2019-05-23 11:19:26,557 INFO L146 ILogger]: Start removeUnreachable. Operand 90 states. [2019-05-23 11:19:26,558 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 90 states to 90 states and 102 transitions. [2019-05-23 11:19:26,559 INFO L146 ILogger]: Start accepts. Automaton has 90 states and 102 transitions. Word has length 40 [2019-05-23 11:19:26,559 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:26,559 INFO L146 ILogger]: Abstraction has 90 states and 102 transitions. [2019-05-23 11:19:26,560 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:19:26,560 INFO L146 ILogger]: Start isEmpty. Operand 90 states and 102 transitions. [2019-05-23 11:19:26,561 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 42 [2019-05-23 11:19:26,561 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:26,562 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:26,562 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:26,562 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:26,563 INFO L146 ILogger]: Analyzing trace with hash 907582870, now seen corresponding path program 1 times [2019-05-23 11:19:26,563 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:26,563 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:26,564 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:26,564 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:26,564 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:26,576 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:26,622 INFO L146 ILogger]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:19:26,623 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:19:26,623 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:19:26,624 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:19:26,624 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:19:26,625 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:19:26,625 INFO L146 ILogger]: Start difference. First operand 90 states and 102 transitions. Second operand 3 states. [2019-05-23 11:19:26,676 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:26,677 INFO L146 ILogger]: Finished difference Result 131 states and 148 transitions. [2019-05-23 11:19:26,678 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:19:26,678 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 41 [2019-05-23 11:19:26,678 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:26,679 INFO L146 ILogger]: With dead ends: 131 [2019-05-23 11:19:26,679 INFO L146 ILogger]: Without dead ends: 86 [2019-05-23 11:19:26,680 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:19:26,680 INFO L146 ILogger]: Start minimizeSevpa. Operand 86 states. [2019-05-23 11:19:26,686 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 86 to 86. [2019-05-23 11:19:26,686 INFO L146 ILogger]: Start removeUnreachable. Operand 86 states. [2019-05-23 11:19:26,687 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2019-05-23 11:19:26,688 INFO L146 ILogger]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 41 [2019-05-23 11:19:26,688 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:26,689 INFO L146 ILogger]: Abstraction has 86 states and 96 transitions. [2019-05-23 11:19:26,689 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:19:26,689 INFO L146 ILogger]: Start isEmpty. Operand 86 states and 96 transitions. [2019-05-23 11:19:26,690 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 42 [2019-05-23 11:19:26,690 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:26,691 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:26,694 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:26,694 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:26,694 INFO L146 ILogger]: Analyzing trace with hash -460055463, now seen corresponding path program 1 times [2019-05-23 11:19:26,694 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:26,694 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:26,695 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:26,695 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:26,696 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:26,719 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:26,763 INFO L146 ILogger]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:19:26,763 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:26,764 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:19:26,777 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:26,812 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:26,814 INFO L146 ILogger]: Trace formula consists of 73 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:19:26,820 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:26,865 INFO L146 ILogger]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:19:26,893 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:26,894 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-05-23 11:19:26,894 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:19:26,894 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:19:26,895 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:19:26,895 INFO L146 ILogger]: Start difference. First operand 86 states and 96 transitions. Second operand 5 states. [2019-05-23 11:19:27,294 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:27,294 INFO L146 ILogger]: Finished difference Result 278 states and 314 transitions. [2019-05-23 11:19:27,295 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:19:27,295 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 41 [2019-05-23 11:19:27,296 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:27,297 INFO L146 ILogger]: With dead ends: 278 [2019-05-23 11:19:27,298 INFO L146 ILogger]: Without dead ends: 208 [2019-05-23 11:19:27,299 INFO L146 ILogger]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:19:27,299 INFO L146 ILogger]: Start minimizeSevpa. Operand 208 states. [2019-05-23 11:19:27,313 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 208 to 136. [2019-05-23 11:19:27,314 INFO L146 ILogger]: Start removeUnreachable. Operand 136 states. [2019-05-23 11:19:27,320 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 136 states to 136 states and 153 transitions. [2019-05-23 11:19:27,320 INFO L146 ILogger]: Start accepts. Automaton has 136 states and 153 transitions. Word has length 41 [2019-05-23 11:19:27,321 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:27,321 INFO L146 ILogger]: Abstraction has 136 states and 153 transitions. [2019-05-23 11:19:27,321 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:19:27,321 INFO L146 ILogger]: Start isEmpty. Operand 136 states and 153 transitions. [2019-05-23 11:19:27,324 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 66 [2019-05-23 11:19:27,324 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:27,327 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:27,327 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:27,328 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:27,328 INFO L146 ILogger]: Analyzing trace with hash -1170482906, now seen corresponding path program 1 times [2019-05-23 11:19:27,328 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:27,328 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:27,329 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:27,329 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:27,329 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:27,353 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:27,445 INFO L146 ILogger]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-05-23 11:19:27,447 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:27,447 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:19:27,460 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:27,488 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:27,489 INFO L146 ILogger]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:19:27,494 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:27,520 INFO L146 ILogger]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-05-23 11:19:27,538 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:27,539 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-05-23 11:19:27,539 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:19:27,539 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:19:27,540 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:19:27,540 INFO L146 ILogger]: Start difference. First operand 136 states and 153 transitions. Second operand 6 states. [2019-05-23 11:19:28,028 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:28,028 INFO L146 ILogger]: Finished difference Result 390 states and 441 transitions. [2019-05-23 11:19:28,028 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:19:28,029 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 65 [2019-05-23 11:19:28,029 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:28,030 INFO L146 ILogger]: With dead ends: 390 [2019-05-23 11:19:28,030 INFO L146 ILogger]: Without dead ends: 278 [2019-05-23 11:19:28,031 INFO L146 ILogger]: 0 DeclaredPredicates, 69 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:19:28,032 INFO L146 ILogger]: Start minimizeSevpa. Operand 278 states. [2019-05-23 11:19:28,043 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 278 to 206. [2019-05-23 11:19:28,043 INFO L146 ILogger]: Start removeUnreachable. Operand 206 states. [2019-05-23 11:19:28,047 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 206 states to 206 states and 232 transitions. [2019-05-23 11:19:28,047 INFO L146 ILogger]: Start accepts. Automaton has 206 states and 232 transitions. Word has length 65 [2019-05-23 11:19:28,047 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:28,047 INFO L146 ILogger]: Abstraction has 206 states and 232 transitions. [2019-05-23 11:19:28,048 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:19:28,048 INFO L146 ILogger]: Start isEmpty. Operand 206 states and 232 transitions. [2019-05-23 11:19:28,050 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 90 [2019-05-23 11:19:28,050 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:28,050 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, 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] [2019-05-23 11:19:28,051 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:28,051 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:28,051 INFO L146 ILogger]: Analyzing trace with hash -271416141, now seen corresponding path program 2 times [2019-05-23 11:19:28,051 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:28,051 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:28,052 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:28,052 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:28,053 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:28,074 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:28,187 INFO L146 ILogger]: Checked inductivity of 72 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-05-23 11:19:28,188 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:28,188 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:19:28,197 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:19:28,228 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:19:28,228 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:28,229 INFO L146 ILogger]: Trace formula consists of 133 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:19:28,233 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:28,256 INFO L146 ILogger]: Checked inductivity of 72 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-05-23 11:19:28,275 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:28,275 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-05-23 11:19:28,276 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:19:28,276 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:19:28,276 INFO L146 ILogger]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:19:28,277 INFO L146 ILogger]: Start difference. First operand 206 states and 232 transitions. Second operand 7 states. [2019-05-23 11:19:28,590 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:28,590 INFO L146 ILogger]: Finished difference Result 522 states and 590 transitions. [2019-05-23 11:19:28,591 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:19:28,591 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 89 [2019-05-23 11:19:28,592 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:28,594 INFO L146 ILogger]: With dead ends: 522 [2019-05-23 11:19:28,594 INFO L146 ILogger]: Without dead ends: 348 [2019-05-23 11:19:28,595 INFO L146 ILogger]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:19:28,596 INFO L146 ILogger]: Start minimizeSevpa. Operand 348 states. [2019-05-23 11:19:28,604 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 348 to 276. [2019-05-23 11:19:28,604 INFO L146 ILogger]: Start removeUnreachable. Operand 276 states. [2019-05-23 11:19:28,606 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 276 states to 276 states and 311 transitions. [2019-05-23 11:19:28,606 INFO L146 ILogger]: Start accepts. Automaton has 276 states and 311 transitions. Word has length 89 [2019-05-23 11:19:28,606 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:28,606 INFO L146 ILogger]: Abstraction has 276 states and 311 transitions. [2019-05-23 11:19:28,607 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:19:28,607 INFO L146 ILogger]: Start isEmpty. Operand 276 states and 311 transitions. [2019-05-23 11:19:28,609 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 114 [2019-05-23 11:19:28,609 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:28,609 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, 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] [2019-05-23 11:19:28,610 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:28,610 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:28,610 INFO L146 ILogger]: Analyzing trace with hash 805957376, now seen corresponding path program 3 times [2019-05-23 11:19:28,610 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:28,610 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:28,611 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:28,611 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:28,612 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:28,661 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:28,798 INFO L146 ILogger]: Checked inductivity of 143 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2019-05-23 11:19:28,798 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:28,798 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:19:28,808 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:19:28,875 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:19:28,875 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:28,876 INFO L146 ILogger]: Trace formula consists of 103 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:19:28,881 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:28,982 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:19:28,983 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:29,009 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:29,010 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:29,010 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2019-05-23 11:19:29,354 INFO L146 ILogger]: treesize reduction 40, result has 23.1 percent of original size [2019-05-23 11:19:29,355 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2019-05-23 11:19:29,356 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:29,370 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:29,370 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:29,371 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:27 [2019-05-23 11:19:29,642 INFO L146 ILogger]: treesize reduction 17, result has 66.7 percent of original size [2019-05-23 11:19:29,643 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 43 [2019-05-23 11:19:29,644 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:29,753 WARN L146 ILogger]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2019-05-23 11:19:29,753 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:29,786 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2019-05-23 11:19:29,787 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:41, output treesize:40 [2019-05-23 11:19:30,340 INFO L146 ILogger]: Checked inductivity of 143 backedges. 23 proven. 62 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2019-05-23 11:19:30,360 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:30,360 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 14] total 19 [2019-05-23 11:19:30,360 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:19:30,361 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:19:30,361 INFO L146 ILogger]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:19:30,361 INFO L146 ILogger]: Start difference. First operand 276 states and 311 transitions. Second operand 19 states. [2019-05-23 11:19:31,698 WARN L146 ILogger]: Spent 100.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 15 [2019-05-23 11:19:33,306 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:33,306 INFO L146 ILogger]: Finished difference Result 1409 states and 1611 transitions. [2019-05-23 11:19:33,306 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2019-05-23 11:19:33,307 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 113 [2019-05-23 11:19:33,307 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:33,313 INFO L146 ILogger]: With dead ends: 1409 [2019-05-23 11:19:33,313 INFO L146 ILogger]: Without dead ends: 1173 [2019-05-23 11:19:33,316 INFO L146 ILogger]: 0 DeclaredPredicates, 177 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1229 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=909, Invalid=3123, Unknown=0, NotChecked=0, Total=4032 [2019-05-23 11:19:33,318 INFO L146 ILogger]: Start minimizeSevpa. Operand 1173 states. [2019-05-23 11:19:33,338 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 1173 to 1048. [2019-05-23 11:19:33,338 INFO L146 ILogger]: Start removeUnreachable. Operand 1048 states. [2019-05-23 11:19:33,341 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1189 transitions. [2019-05-23 11:19:33,342 INFO L146 ILogger]: Start accepts. Automaton has 1048 states and 1189 transitions. Word has length 113 [2019-05-23 11:19:33,342 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:33,342 INFO L146 ILogger]: Abstraction has 1048 states and 1189 transitions. [2019-05-23 11:19:33,342 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:19:33,343 INFO L146 ILogger]: Start isEmpty. Operand 1048 states and 1189 transitions. [2019-05-23 11:19:33,346 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 210 [2019-05-23 11:19:33,347 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:33,347 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:33,347 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:33,348 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:33,348 INFO L146 ILogger]: Analyzing trace with hash -1743291516, now seen corresponding path program 1 times [2019-05-23 11:19:33,348 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:33,348 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:33,349 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:33,349 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:33,349 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:33,385 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:33,576 INFO L146 ILogger]: Checked inductivity of 653 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2019-05-23 11:19:33,576 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:33,577 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:19:33,585 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:33,630 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:33,631 INFO L146 ILogger]: Trace formula consists of 283 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:19:33,638 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:33,720 INFO L146 ILogger]: Checked inductivity of 653 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2019-05-23 11:19:33,741 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:33,741 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-05-23 11:19:33,742 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:19:33,742 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:19:33,742 INFO L146 ILogger]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:19:33,743 INFO L146 ILogger]: Start difference. First operand 1048 states and 1189 transitions. Second operand 12 states. [2019-05-23 11:19:34,716 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:34,716 INFO L146 ILogger]: Finished difference Result 2515 states and 2860 transitions. [2019-05-23 11:19:34,717 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:19:34,718 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 209 [2019-05-23 11:19:34,718 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:34,728 INFO L146 ILogger]: With dead ends: 2515 [2019-05-23 11:19:34,728 INFO L146 ILogger]: Without dead ends: 1549 [2019-05-23 11:19:34,730 INFO L146 ILogger]: 0 DeclaredPredicates, 219 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:19:34,732 INFO L146 ILogger]: Start minimizeSevpa. Operand 1549 states. [2019-05-23 11:19:34,764 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 1549 to 1180. [2019-05-23 11:19:34,765 INFO L146 ILogger]: Start removeUnreachable. Operand 1180 states. [2019-05-23 11:19:34,768 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1338 transitions. [2019-05-23 11:19:34,769 INFO L146 ILogger]: Start accepts. Automaton has 1180 states and 1338 transitions. Word has length 209 [2019-05-23 11:19:34,769 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:34,769 INFO L146 ILogger]: Abstraction has 1180 states and 1338 transitions. [2019-05-23 11:19:34,769 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:19:34,769 INFO L146 ILogger]: Start isEmpty. Operand 1180 states and 1338 transitions. [2019-05-23 11:19:34,774 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 234 [2019-05-23 11:19:34,774 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:34,774 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:34,775 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:34,775 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:34,775 INFO L146 ILogger]: Analyzing trace with hash 31575953, now seen corresponding path program 2 times [2019-05-23 11:19:34,775 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:34,775 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:34,776 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:34,776 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:34,776 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:34,835 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:35,059 INFO L146 ILogger]: Checked inductivity of 842 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 617 trivial. 0 not checked. [2019-05-23 11:19:35,059 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:35,060 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:19:35,070 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:19:35,135 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:19:35,136 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:35,137 INFO L146 ILogger]: Trace formula consists of 313 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:19:35,143 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:35,217 INFO L146 ILogger]: Checked inductivity of 842 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 617 trivial. 0 not checked. [2019-05-23 11:19:35,247 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:35,247 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2019-05-23 11:19:35,248 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:19:35,248 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:19:35,249 INFO L146 ILogger]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:19:35,249 INFO L146 ILogger]: Start difference. First operand 1180 states and 1338 transitions. Second operand 13 states. [2019-05-23 11:19:35,821 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:35,821 INFO L146 ILogger]: Finished difference Result 2771 states and 3149 transitions. [2019-05-23 11:19:35,822 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:19:35,822 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 233 [2019-05-23 11:19:35,822 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:35,832 INFO L146 ILogger]: With dead ends: 2771 [2019-05-23 11:19:35,833 INFO L146 ILogger]: Without dead ends: 1681 [2019-05-23 11:19:35,835 INFO L146 ILogger]: 0 DeclaredPredicates, 244 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:19:35,842 INFO L146 ILogger]: Start minimizeSevpa. Operand 1681 states. [2019-05-23 11:19:35,878 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 1681 to 1312. [2019-05-23 11:19:35,878 INFO L146 ILogger]: Start removeUnreachable. Operand 1312 states. [2019-05-23 11:19:35,882 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1487 transitions. [2019-05-23 11:19:35,882 INFO L146 ILogger]: Start accepts. Automaton has 1312 states and 1487 transitions. Word has length 233 [2019-05-23 11:19:35,882 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:35,883 INFO L146 ILogger]: Abstraction has 1312 states and 1487 transitions. [2019-05-23 11:19:35,884 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:19:35,884 INFO L146 ILogger]: Start isEmpty. Operand 1312 states and 1487 transitions. [2019-05-23 11:19:35,890 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 258 [2019-05-23 11:19:35,890 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:35,890 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:35,891 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:35,891 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:35,891 INFO L146 ILogger]: Analyzing trace with hash -233586082, now seen corresponding path program 3 times [2019-05-23 11:19:35,892 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:35,892 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:35,893 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:35,893 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:35,893 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:35,945 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:36,200 INFO L146 ILogger]: Checked inductivity of 1055 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2019-05-23 11:19:36,201 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:36,201 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:19:36,209 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:19:36,288 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:19:36,288 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:36,289 INFO L146 ILogger]: Trace formula consists of 133 conjuncts, 21 conjunts are in the unsatisfiable core [2019-05-23 11:19:36,294 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:36,299 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:19:36,299 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:36,304 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:36,304 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:36,305 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2019-05-23 11:19:36,352 INFO L146 ILogger]: treesize reduction 40, result has 23.1 percent of original size [2019-05-23 11:19:36,353 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2019-05-23 11:19:36,354 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:36,368 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:36,369 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:36,369 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:24 [2019-05-23 11:19:36,462 INFO L146 ILogger]: treesize reduction 96, result has 20.7 percent of original size [2019-05-23 11:19:36,463 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 42 [2019-05-23 11:19:36,464 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:36,473 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:36,474 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:36,474 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:43, output treesize:39 [2019-05-23 11:19:48,868 INFO L146 ILogger]: treesize reduction 52, result has 49.5 percent of original size [2019-05-23 11:19:48,869 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 63 [2019-05-23 11:19:48,869 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:48,940 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:48,965 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 5 xjuncts. [2019-05-23 11:19:48,965 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:53, output treesize:121 [2019-05-23 11:19:49,601 INFO L146 ILogger]: Checked inductivity of 1055 backedges. 117 proven. 315 refuted. 0 times theorem prover too weak. 623 trivial. 0 not checked. [2019-05-23 11:19:49,620 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:49,620 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17] total 28 [2019-05-23 11:19:49,620 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:19:49,621 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:19:49,621 INFO L146 ILogger]: CoverageRelationStatistics Valid=202, Invalid=553, Unknown=1, NotChecked=0, Total=756 [2019-05-23 11:19:49,621 INFO L146 ILogger]: Start difference. First operand 1312 states and 1487 transitions. Second operand 28 states.