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_init8_false-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:15:29,597 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:15:29,599 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:15:29,616 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:15:29,616 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:15:29,618 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:15:29,619 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:15:29,621 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:15:29,623 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:15:29,623 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:15:29,627 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:15:29,627 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:15:29,628 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:15:29,630 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:15:29,631 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:15:29,636 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:15:29,636 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:15:29,644 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:15:29,648 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:15:29,650 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:15:29,654 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:15:29,655 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:15:29,659 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-05-23 11:15:29,669 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:15:29,669 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:15:29,670 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:15:29,670 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:15:29,671 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:15:29,672 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:15:29,672 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:15:29,686 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:15:29,687 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:15:29,688 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:15:29,688 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:15:29,688 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:15:29,689 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:15:29,689 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:15:29,689 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:15:29,689 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:15:29,689 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:15:29,690 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:15:29,690 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:15:29,690 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:15:29,690 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:15:29,690 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:15:29,691 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:15:29,691 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:15:29,691 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:15:29,691 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:15:29,692 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:15:29,692 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:15:29,692 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:15:29,692 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:15:29,692 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:15:29,693 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:15:29,693 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:15:29,693 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:15:29,693 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:15:29,694 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 11:15:29,726 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:15:29,741 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:15:29,749 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:15:29,750 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:15:29,750 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:15:29,751 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_init8_false-unreach-call_ground.i [2019-05-23 11:15:29,816 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3800892c6/7399ba9b8e5a4e7c8862685d1c5c252e/FLAG50f06d6a4 [2019-05-23 11:15:30,265 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:15:30,266 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_init8_false-unreach-call_ground.i [2019-05-23 11:15:30,272 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3800892c6/7399ba9b8e5a4e7c8862685d1c5c252e/FLAG50f06d6a4 [2019-05-23 11:15:30,614 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3800892c6/7399ba9b8e5a4e7c8862685d1c5c252e [2019-05-23 11:15:30,625 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:15:30,627 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:15:30,628 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:15:30,628 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:15:30,632 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:15:30,633 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:15:30" (1/1) ... [2019-05-23 11:15:30,635 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79dd7ace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:30, skipping insertion in model container [2019-05-23 11:15:30,636 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:15:30" (1/1) ... [2019-05-23 11:15:30,644 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:15:30,664 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:15:30,854 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:15:30,860 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:15:30,896 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:15:30,916 INFO L146 ILogger]: Completed translation [2019-05-23 11:15:30,917 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:30 WrapperNode [2019-05-23 11:15:30,917 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:15:30,918 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:15:30,918 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:15:30,918 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:15:30,927 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:30" (1/1) ... [2019-05-23 11:15:30,936 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:30" (1/1) ... [2019-05-23 11:15:30,962 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:15:30,962 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:15:30,962 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:15:30,962 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:15:30,970 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:30" (1/1) ... [2019-05-23 11:15:30,971 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:30" (1/1) ... [2019-05-23 11:15:30,973 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:30" (1/1) ... [2019-05-23 11:15:30,973 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:30" (1/1) ... [2019-05-23 11:15:30,980 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:30" (1/1) ... [2019-05-23 11:15:31,085 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:30" (1/1) ... [2019-05-23 11:15:31,087 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:30" (1/1) ... [2019-05-23 11:15:31,089 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:15:31,089 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:15:31,090 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:15:31,090 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:15:31,090 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:30" (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 11:15:31,143 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:15:31,144 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:15:31,144 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:15:31,144 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:15:31,144 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:15:31,144 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:15:31,637 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:15:31,638 INFO L146 ILogger]: Removed 15 assume(true) statements. [2019-05-23 11:15:31,639 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:15:31 BoogieIcfgContainer [2019-05-23 11:15:31,639 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:15:31,640 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:15:31,640 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:15:31,643 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:15:31,644 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:15:30" (1/3) ... [2019-05-23 11:15:31,644 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@349c6516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:15:31, skipping insertion in model container [2019-05-23 11:15:31,645 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:30" (2/3) ... [2019-05-23 11:15:31,645 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@349c6516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:15:31, skipping insertion in model container [2019-05-23 11:15:31,645 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:15:31" (3/3) ... [2019-05-23 11:15:31,647 INFO L146 ILogger]: Analyzing ICFG standard_init8_false-unreach-call_ground.i [2019-05-23 11:15:31,657 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:15:31,666 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:15:31,682 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:15:31,710 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:15:31,711 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:15:31,711 INFO L146 ILogger]: Hoare is true [2019-05-23 11:15:31,711 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:15:31,711 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:15:31,711 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:15:31,711 INFO L146 ILogger]: Difference is false [2019-05-23 11:15:31,711 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:15:31,712 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:15:31,727 INFO L146 ILogger]: Start isEmpty. Operand 57 states. [2019-05-23 11:15:31,735 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 31 [2019-05-23 11:15:31,735 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:31,736 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] [2019-05-23 11:15:31,739 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:31,744 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:31,744 INFO L146 ILogger]: Analyzing trace with hash 880912984, now seen corresponding path program 1 times [2019-05-23 11:15:31,745 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:31,746 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:31,788 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:31,788 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:31,788 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:31,820 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:31,858 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 11:15:31,861 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:15:31,862 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:15:31,865 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:15:31,875 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:15:31,876 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:15:31,877 INFO L146 ILogger]: Start difference. First operand 57 states. Second operand 2 states. [2019-05-23 11:15:31,896 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:31,897 INFO L146 ILogger]: Finished difference Result 105 states and 139 transitions. [2019-05-23 11:15:31,897 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:15:31,898 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 30 [2019-05-23 11:15:31,898 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:31,907 INFO L146 ILogger]: With dead ends: 105 [2019-05-23 11:15:31,907 INFO L146 ILogger]: Without dead ends: 51 [2019-05-23 11:15:31,911 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 11:15:31,924 INFO L146 ILogger]: Start minimizeSevpa. Operand 51 states. [2019-05-23 11:15:31,938 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 51 to 51. [2019-05-23 11:15:31,940 INFO L146 ILogger]: Start removeUnreachable. Operand 51 states. [2019-05-23 11:15:31,941 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2019-05-23 11:15:31,943 INFO L146 ILogger]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 30 [2019-05-23 11:15:31,943 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:31,944 INFO L146 ILogger]: Abstraction has 51 states and 59 transitions. [2019-05-23 11:15:31,944 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:15:31,944 INFO L146 ILogger]: Start isEmpty. Operand 51 states and 59 transitions. [2019-05-23 11:15:31,945 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 31 [2019-05-23 11:15:31,945 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:31,946 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] [2019-05-23 11:15:31,947 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:31,947 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:31,947 INFO L146 ILogger]: Analyzing trace with hash 471834224, now seen corresponding path program 1 times [2019-05-23 11:15:31,947 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:31,947 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:31,948 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:31,949 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:31,949 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:31,971 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:32,027 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 11:15:32,027 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:15:32,028 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:15:32,029 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:15:32,030 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:15:32,030 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:15:32,030 INFO L146 ILogger]: Start difference. First operand 51 states and 59 transitions. Second operand 3 states. [2019-05-23 11:15:32,498 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:32,499 INFO L146 ILogger]: Finished difference Result 117 states and 140 transitions. [2019-05-23 11:15:32,499 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:15:32,499 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 30 [2019-05-23 11:15:32,500 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:32,501 INFO L146 ILogger]: With dead ends: 117 [2019-05-23 11:15:32,501 INFO L146 ILogger]: Without dead ends: 75 [2019-05-23 11:15:32,503 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 11:15:32,503 INFO L146 ILogger]: Start minimizeSevpa. Operand 75 states. [2019-05-23 11:15:32,510 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 75 to 59. [2019-05-23 11:15:32,511 INFO L146 ILogger]: Start removeUnreachable. Operand 59 states. [2019-05-23 11:15:32,512 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2019-05-23 11:15:32,512 INFO L146 ILogger]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 30 [2019-05-23 11:15:32,513 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:32,513 INFO L146 ILogger]: Abstraction has 59 states and 67 transitions. [2019-05-23 11:15:32,513 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:15:32,513 INFO L146 ILogger]: Start isEmpty. Operand 59 states and 67 transitions. [2019-05-23 11:15:32,515 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 55 [2019-05-23 11:15:32,515 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:32,515 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:32,516 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:32,516 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:32,516 INFO L146 ILogger]: Analyzing trace with hash -1086688788, now seen corresponding path program 1 times [2019-05-23 11:15:32,516 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:32,517 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:32,518 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:32,518 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:32,518 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:32,559 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:32,625 INFO L146 ILogger]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:15:32,626 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:32,626 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 11:15:32,645 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:32,682 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:32,684 INFO L146 ILogger]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:15:32,691 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:32,736 INFO L146 ILogger]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:15:32,764 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:32,764 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-05-23 11:15:32,765 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:15:32,765 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:15:32,766 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:15:32,766 INFO L146 ILogger]: Start difference. First operand 59 states and 67 transitions. Second operand 5 states. [2019-05-23 11:15:33,249 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:33,249 INFO L146 ILogger]: Finished difference Result 148 states and 171 transitions. [2019-05-23 11:15:33,250 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:15:33,250 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 54 [2019-05-23 11:15:33,251 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:33,252 INFO L146 ILogger]: With dead ends: 148 [2019-05-23 11:15:33,252 INFO L146 ILogger]: Without dead ends: 99 [2019-05-23 11:15:33,253 INFO L146 ILogger]: 0 DeclaredPredicates, 57 GetRequests, 54 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 11:15:33,253 INFO L146 ILogger]: Start minimizeSevpa. Operand 99 states. [2019-05-23 11:15:33,262 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 99 to 83. [2019-05-23 11:15:33,262 INFO L146 ILogger]: Start removeUnreachable. Operand 83 states. [2019-05-23 11:15:33,264 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2019-05-23 11:15:33,264 INFO L146 ILogger]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 54 [2019-05-23 11:15:33,264 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:33,265 INFO L146 ILogger]: Abstraction has 83 states and 91 transitions. [2019-05-23 11:15:33,265 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:15:33,265 INFO L146 ILogger]: Start isEmpty. Operand 83 states and 91 transitions. [2019-05-23 11:15:33,279 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 79 [2019-05-23 11:15:33,280 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:33,280 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:33,280 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:33,280 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:33,282 INFO L146 ILogger]: Analyzing trace with hash -521253904, now seen corresponding path program 2 times [2019-05-23 11:15:33,282 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:33,282 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:33,283 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:33,283 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:33,284 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:33,354 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:33,464 INFO L146 ILogger]: Checked inductivity of 40 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-05-23 11:15:33,464 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:33,464 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 11:15:33,483 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:15:33,536 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:15:33,536 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:33,538 INFO L146 ILogger]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:15:33,541 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:33,666 INFO L146 ILogger]: Checked inductivity of 40 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-05-23 11:15:33,698 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:33,698 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-05-23 11:15:33,699 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:15:33,699 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:15:33,699 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:15:33,700 INFO L146 ILogger]: Start difference. First operand 83 states and 91 transitions. Second operand 6 states. [2019-05-23 11:15:34,214 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:34,215 INFO L146 ILogger]: Finished difference Result 193 states and 216 transitions. [2019-05-23 11:15:34,217 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:15:34,217 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 78 [2019-05-23 11:15:34,217 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:34,219 INFO L146 ILogger]: With dead ends: 193 [2019-05-23 11:15:34,219 INFO L146 ILogger]: Without dead ends: 123 [2019-05-23 11:15:34,220 INFO L146 ILogger]: 0 DeclaredPredicates, 82 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:15:34,220 INFO L146 ILogger]: Start minimizeSevpa. Operand 123 states. [2019-05-23 11:15:34,228 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 123 to 107. [2019-05-23 11:15:34,228 INFO L146 ILogger]: Start removeUnreachable. Operand 107 states. [2019-05-23 11:15:34,229 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 107 states to 107 states and 115 transitions. [2019-05-23 11:15:34,230 INFO L146 ILogger]: Start accepts. Automaton has 107 states and 115 transitions. Word has length 78 [2019-05-23 11:15:34,230 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:34,230 INFO L146 ILogger]: Abstraction has 107 states and 115 transitions. [2019-05-23 11:15:34,230 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:15:34,230 INFO L146 ILogger]: Start isEmpty. Operand 107 states and 115 transitions. [2019-05-23 11:15:34,232 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 103 [2019-05-23 11:15:34,232 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:34,232 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:34,233 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:34,233 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:34,233 INFO L146 ILogger]: Analyzing trace with hash -420521108, now seen corresponding path program 3 times [2019-05-23 11:15:34,233 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:34,233 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:34,234 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:34,234 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:34,235 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:34,275 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:34,381 INFO L146 ILogger]: Checked inductivity of 96 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-05-23 11:15:34,382 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:34,382 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 11:15:34,391 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:15:34,525 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:15:34,525 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:34,526 INFO L146 ILogger]: Trace formula consists of 151 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:15:34,530 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:34,563 INFO L146 ILogger]: Checked inductivity of 96 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-05-23 11:15:34,596 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:34,596 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-05-23 11:15:34,596 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:15:34,597 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:15:34,597 INFO L146 ILogger]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:15:34,598 INFO L146 ILogger]: Start difference. First operand 107 states and 115 transitions. Second operand 7 states. [2019-05-23 11:15:35,315 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:35,315 INFO L146 ILogger]: Finished difference Result 238 states and 261 transitions. [2019-05-23 11:15:35,321 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:15:35,321 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 102 [2019-05-23 11:15:35,321 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:35,323 INFO L146 ILogger]: With dead ends: 238 [2019-05-23 11:15:35,323 INFO L146 ILogger]: Without dead ends: 147 [2019-05-23 11:15:35,324 INFO L146 ILogger]: 0 DeclaredPredicates, 107 GetRequests, 102 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 11:15:35,324 INFO L146 ILogger]: Start minimizeSevpa. Operand 147 states. [2019-05-23 11:15:35,337 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 147 to 131. [2019-05-23 11:15:35,338 INFO L146 ILogger]: Start removeUnreachable. Operand 131 states. [2019-05-23 11:15:35,338 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 131 states to 131 states and 139 transitions. [2019-05-23 11:15:35,341 INFO L146 ILogger]: Start accepts. Automaton has 131 states and 139 transitions. Word has length 102 [2019-05-23 11:15:35,341 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:35,341 INFO L146 ILogger]: Abstraction has 131 states and 139 transitions. [2019-05-23 11:15:35,341 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:15:35,342 INFO L146 ILogger]: Start isEmpty. Operand 131 states and 139 transitions. [2019-05-23 11:15:35,346 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 127 [2019-05-23 11:15:35,347 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:35,347 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:35,347 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:35,347 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:35,348 INFO L146 ILogger]: Analyzing trace with hash 2087606640, now seen corresponding path program 4 times [2019-05-23 11:15:35,349 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:35,349 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:35,350 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:35,350 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:35,350 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:35,401 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:35,518 INFO L146 ILogger]: Checked inductivity of 176 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2019-05-23 11:15:35,518 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:35,518 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 11:15:35,533 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:15:35,590 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:15:35,590 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:35,591 INFO L146 ILogger]: Trace formula consists of 183 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:15:35,596 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:35,738 INFO L146 ILogger]: Checked inductivity of 176 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2019-05-23 11:15:35,780 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:35,780 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-05-23 11:15:35,781 INFO L146 ILogger]: Interpolant automaton has 8 states [2019-05-23 11:15:35,781 INFO L146 ILogger]: Constructing interpolant automaton starting with 8 interpolants. [2019-05-23 11:15:35,781 INFO L146 ILogger]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:15:35,782 INFO L146 ILogger]: Start difference. First operand 131 states and 139 transitions. Second operand 8 states. [2019-05-23 11:15:36,174 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:36,175 INFO L146 ILogger]: Finished difference Result 283 states and 306 transitions. [2019-05-23 11:15:36,181 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:15:36,181 INFO L146 ILogger]: Start accepts. Automaton has 8 states. Word has length 126 [2019-05-23 11:15:36,181 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:36,182 INFO L146 ILogger]: With dead ends: 283 [2019-05-23 11:15:36,183 INFO L146 ILogger]: Without dead ends: 171 [2019-05-23 11:15:36,184 INFO L146 ILogger]: 0 DeclaredPredicates, 132 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:15:36,184 INFO L146 ILogger]: Start minimizeSevpa. Operand 171 states. [2019-05-23 11:15:36,192 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 171 to 155. [2019-05-23 11:15:36,192 INFO L146 ILogger]: Start removeUnreachable. Operand 155 states. [2019-05-23 11:15:36,193 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 155 states to 155 states and 163 transitions. [2019-05-23 11:15:36,193 INFO L146 ILogger]: Start accepts. Automaton has 155 states and 163 transitions. Word has length 126 [2019-05-23 11:15:36,195 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:36,195 INFO L146 ILogger]: Abstraction has 155 states and 163 transitions. [2019-05-23 11:15:36,195 INFO L146 ILogger]: Interpolant automaton has 8 states. [2019-05-23 11:15:36,195 INFO L146 ILogger]: Start isEmpty. Operand 155 states and 163 transitions. [2019-05-23 11:15:36,197 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 151 [2019-05-23 11:15:36,197 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:36,201 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:36,201 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:36,201 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:36,202 INFO L146 ILogger]: Analyzing trace with hash -555064084, now seen corresponding path program 5 times [2019-05-23 11:15:36,202 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:36,202 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:36,203 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:36,203 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:36,203 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:36,282 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:36,504 INFO L146 ILogger]: Checked inductivity of 280 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2019-05-23 11:15:36,504 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:36,504 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 11:15:36,515 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:16:03,127 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-05-23 11:16:03,127 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:03,145 INFO L146 ILogger]: Trace formula consists of 215 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:16:03,150 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:03,216 INFO L146 ILogger]: Checked inductivity of 280 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2019-05-23 11:16:03,241 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:03,242 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-05-23 11:16:03,242 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:16:03,243 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:16:03,243 INFO L146 ILogger]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:16:03,243 INFO L146 ILogger]: Start difference. First operand 155 states and 163 transitions. Second operand 9 states. [2019-05-23 11:16:03,585 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:03,586 INFO L146 ILogger]: Finished difference Result 328 states and 351 transitions. [2019-05-23 11:16:03,587 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:16:03,587 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 150 [2019-05-23 11:16:03,588 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:03,589 INFO L146 ILogger]: With dead ends: 328 [2019-05-23 11:16:03,589 INFO L146 ILogger]: Without dead ends: 195 [2019-05-23 11:16:03,590 INFO L146 ILogger]: 0 DeclaredPredicates, 157 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:16:03,591 INFO L146 ILogger]: Start minimizeSevpa. Operand 195 states. [2019-05-23 11:16:03,599 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 195 to 179. [2019-05-23 11:16:03,600 INFO L146 ILogger]: Start removeUnreachable. Operand 179 states. [2019-05-23 11:16:03,601 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 179 states to 179 states and 187 transitions. [2019-05-23 11:16:03,601 INFO L146 ILogger]: Start accepts. Automaton has 179 states and 187 transitions. Word has length 150 [2019-05-23 11:16:03,601 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:03,601 INFO L146 ILogger]: Abstraction has 179 states and 187 transitions. [2019-05-23 11:16:03,601 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:16:03,601 INFO L146 ILogger]: Start isEmpty. Operand 179 states and 187 transitions. [2019-05-23 11:16:03,604 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 175 [2019-05-23 11:16:03,604 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:03,604 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 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 11:16:03,605 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:03,605 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:03,605 INFO L146 ILogger]: Analyzing trace with hash 1111475952, now seen corresponding path program 6 times [2019-05-23 11:16:03,605 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:03,605 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:03,606 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:03,606 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:03,606 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:03,642 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:03,769 INFO L146 ILogger]: Checked inductivity of 408 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2019-05-23 11:16:03,770 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:03,770 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 11:16:03,779 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:16:17,659 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:16:17,659 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:17,678 INFO L146 ILogger]: Trace formula consists of 247 conjuncts, 38 conjunts are in the unsatisfiable core [2019-05-23 11:16:17,682 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:17,762 INFO L146 ILogger]: Checked inductivity of 408 backedges. 80 proven. 51 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2019-05-23 11:16:17,796 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:17,797 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 12 [2019-05-23 11:16:17,797 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:16:17,798 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:16:17,798 INFO L146 ILogger]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:16:17,798 INFO L146 ILogger]: Start difference. First operand 179 states and 187 transitions. Second operand 12 states. [2019-05-23 11:16:18,419 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:18,419 INFO L146 ILogger]: Finished difference Result 381 states and 412 transitions. [2019-05-23 11:16:18,419 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:16:18,420 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 174 [2019-05-23 11:16:18,420 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:18,422 INFO L146 ILogger]: With dead ends: 381 [2019-05-23 11:16:18,422 INFO L146 ILogger]: Without dead ends: 227 [2019-05-23 11:16:18,423 INFO L146 ILogger]: 0 DeclaredPredicates, 182 GetRequests, 172 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 11:16:18,424 INFO L146 ILogger]: Start minimizeSevpa. Operand 227 states. [2019-05-23 11:16:18,432 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 227 to 227. [2019-05-23 11:16:18,433 INFO L146 ILogger]: Start removeUnreachable. Operand 227 states. [2019-05-23 11:16:18,433 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 227 states to 227 states and 235 transitions. [2019-05-23 11:16:18,434 INFO L146 ILogger]: Start accepts. Automaton has 227 states and 235 transitions. Word has length 174 [2019-05-23 11:16:18,434 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:18,434 INFO L146 ILogger]: Abstraction has 227 states and 235 transitions. [2019-05-23 11:16:18,434 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:16:18,434 INFO L146 ILogger]: Start isEmpty. Operand 227 states and 235 transitions. [2019-05-23 11:16:18,437 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 223 [2019-05-23 11:16:18,438 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:18,438 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 1, 1, 1, 1, 1] [2019-05-23 11:16:18,438 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:18,438 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:18,439 INFO L146 ILogger]: Analyzing trace with hash 1744999536, now seen corresponding path program 7 times [2019-05-23 11:16:18,439 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:18,439 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:18,440 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:18,440 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:18,440 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:18,483 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:19,243 INFO L146 ILogger]: Checked inductivity of 736 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 644 trivial. 0 not checked. [2019-05-23 11:16:19,243 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:19,244 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 11:16:19,254 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:19,314 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:19,315 INFO L146 ILogger]: Trace formula consists of 311 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:16:19,319 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:19,385 INFO L146 ILogger]: Checked inductivity of 736 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 644 trivial. 0 not checked. [2019-05-23 11:16:19,415 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:19,416 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-05-23 11:16:19,416 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:16:19,416 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:16:19,417 INFO L146 ILogger]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:16:19,417 INFO L146 ILogger]: Start difference. First operand 227 states and 235 transitions. Second operand 12 states. [2019-05-23 11:16:20,041 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:20,041 INFO L146 ILogger]: Finished difference Result 463 states and 486 transitions. [2019-05-23 11:16:20,042 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:16:20,042 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 222 [2019-05-23 11:16:20,042 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:20,044 INFO L146 ILogger]: With dead ends: 463 [2019-05-23 11:16:20,044 INFO L146 ILogger]: Without dead ends: 267 [2019-05-23 11:16:20,045 INFO L146 ILogger]: 0 DeclaredPredicates, 232 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:16:20,045 INFO L146 ILogger]: Start minimizeSevpa. Operand 267 states. [2019-05-23 11:16:20,052 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 267 to 251. [2019-05-23 11:16:20,052 INFO L146 ILogger]: Start removeUnreachable. Operand 251 states. [2019-05-23 11:16:20,053 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 251 states to 251 states and 259 transitions. [2019-05-23 11:16:20,054 INFO L146 ILogger]: Start accepts. Automaton has 251 states and 259 transitions. Word has length 222 [2019-05-23 11:16:20,054 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:20,054 INFO L146 ILogger]: Abstraction has 251 states and 259 transitions. [2019-05-23 11:16:20,054 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:16:20,054 INFO L146 ILogger]: Start isEmpty. Operand 251 states and 259 transitions. [2019-05-23 11:16:20,058 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 247 [2019-05-23 11:16:20,058 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:20,058 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1] [2019-05-23 11:16:20,058 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:20,059 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:20,059 INFO L146 ILogger]: Analyzing trace with hash 87218156, now seen corresponding path program 8 times [2019-05-23 11:16:20,059 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:20,059 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:20,060 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:20,060 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:20,060 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:20,099 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:20,322 INFO L146 ILogger]: Checked inductivity of 936 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2019-05-23 11:16:20,323 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:20,323 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 11:16:20,334 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:16:20,389 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:16:20,389 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:20,391 INFO L146 ILogger]: Trace formula consists of 343 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:16:20,393 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:20,441 INFO L146 ILogger]: Checked inductivity of 936 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2019-05-23 11:16:20,460 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:20,460 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2019-05-23 11:16:20,461 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:16:20,461 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:16:20,462 INFO L146 ILogger]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:16:20,462 INFO L146 ILogger]: Start difference. First operand 251 states and 259 transitions. Second operand 13 states. [2019-05-23 11:16:21,247 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:21,247 INFO L146 ILogger]: Finished difference Result 508 states and 531 transitions. [2019-05-23 11:16:21,248 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:16:21,248 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 246 [2019-05-23 11:16:21,248 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:21,251 INFO L146 ILogger]: With dead ends: 508 [2019-05-23 11:16:21,251 INFO L146 ILogger]: Without dead ends: 291 [2019-05-23 11:16:21,252 INFO L146 ILogger]: 0 DeclaredPredicates, 257 GetRequests, 246 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 11:16:21,252 INFO L146 ILogger]: Start minimizeSevpa. Operand 291 states. [2019-05-23 11:16:21,258 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 291 to 275. [2019-05-23 11:16:21,258 INFO L146 ILogger]: Start removeUnreachable. Operand 275 states. [2019-05-23 11:16:21,259 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 275 states to 275 states and 283 transitions. [2019-05-23 11:16:21,259 INFO L146 ILogger]: Start accepts. Automaton has 275 states and 283 transitions. Word has length 246 [2019-05-23 11:16:21,260 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:21,260 INFO L146 ILogger]: Abstraction has 275 states and 283 transitions. [2019-05-23 11:16:21,260 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:16:21,260 INFO L146 ILogger]: Start isEmpty. Operand 275 states and 283 transitions. [2019-05-23 11:16:21,262 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 271 [2019-05-23 11:16:21,262 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:21,262 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 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 11:16:21,262 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:21,263 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:21,263 INFO L146 ILogger]: Analyzing trace with hash 89571824, now seen corresponding path program 9 times [2019-05-23 11:16:21,263 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:21,263 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:21,264 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:21,264 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:21,264 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:21,305 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:21,480 INFO L146 ILogger]: Checked inductivity of 1160 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 1015 trivial. 0 not checked. [2019-05-23 11:16:21,480 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:21,480 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 11:16:21,489 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2