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_init5_false-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:15:27,778 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:15:27,780 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:15:27,793 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:15:27,793 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:15:27,794 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:15:27,796 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:15:27,798 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:15:27,799 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:15:27,800 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:15:27,801 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:15:27,801 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:15:27,802 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:15:27,803 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:15:27,804 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:15:27,805 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:15:27,806 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:15:27,808 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:15:27,810 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:15:27,812 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:15:27,813 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:15:27,815 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:15:27,817 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-05-23 11:15:27,825 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:15:27,826 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:15:27,826 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:15:27,826 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:15:27,827 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:15:27,828 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:15:27,828 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:15:27,843 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:15:27,843 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:15:27,845 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:15:27,845 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:15:27,845 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:15:27,845 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:15:27,846 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:15:27,846 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:15:27,846 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:15:27,846 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:15:27,846 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:15:27,847 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:15:27,847 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:15:27,847 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:15:27,847 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:15:27,847 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:15:27,848 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:15:27,848 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:15:27,848 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:15:27,848 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:15:27,848 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:15:27,849 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:15:27,849 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:15:27,849 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:15:27,849 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:15:27,849 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:15:27,850 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:15:27,850 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:15:27,850 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 11:15:27,887 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:15:27,897 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:15:27,901 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:15:27,902 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:15:27,903 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:15:27,903 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_init5_false-unreach-call_ground.i [2019-05-23 11:15:27,955 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09db7c0fa/1f598e60f02b4a8d92a1585a34367157/FLAG841383be2 [2019-05-23 11:15:28,399 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:15:28,400 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_init5_false-unreach-call_ground.i [2019-05-23 11:15:28,406 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09db7c0fa/1f598e60f02b4a8d92a1585a34367157/FLAG841383be2 [2019-05-23 11:15:28,790 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09db7c0fa/1f598e60f02b4a8d92a1585a34367157 [2019-05-23 11:15:28,803 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:15:28,805 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:15:28,808 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:15:28,809 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:15:28,812 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:15:28,813 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:15:28" (1/1) ... [2019-05-23 11:15:28,816 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5475ba56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:28, skipping insertion in model container [2019-05-23 11:15:28,817 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:15:28" (1/1) ... [2019-05-23 11:15:28,824 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:15:28,844 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:15:29,031 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:15:29,038 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:15:29,069 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:15:29,091 INFO L146 ILogger]: Completed translation [2019-05-23 11:15:29,091 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:29 WrapperNode [2019-05-23 11:15:29,092 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:15:29,093 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:15:29,093 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:15:29,093 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:15:29,103 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:29" (1/1) ... [2019-05-23 11:15:29,111 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:29" (1/1) ... [2019-05-23 11:15:29,140 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:15:29,140 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:15:29,140 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:15:29,141 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:15:29,152 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:29" (1/1) ... [2019-05-23 11:15:29,153 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:29" (1/1) ... [2019-05-23 11:15:29,155 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:29" (1/1) ... [2019-05-23 11:15:29,155 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:29" (1/1) ... [2019-05-23 11:15:29,161 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:29" (1/1) ... [2019-05-23 11:15:29,168 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:29" (1/1) ... [2019-05-23 11:15:29,170 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:29" (1/1) ... [2019-05-23 11:15:29,172 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:15:29,173 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:15:29,173 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:15:29,173 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:15:29,174 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:29" (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 11:15:29,330 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:15:29,330 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:15:29,330 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:15:29,331 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:15:29,331 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:15:29,331 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:15:29,863 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:15:29,863 INFO L146 ILogger]: Removed 12 assume(true) statements. [2019-05-23 11:15:29,864 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:15:29 BoogieIcfgContainer [2019-05-23 11:15:29,864 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:15:29,865 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:15:29,865 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:15:29,868 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:15:29,869 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:15:28" (1/3) ... [2019-05-23 11:15:29,870 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ca396f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:15:29, skipping insertion in model container [2019-05-23 11:15:29,870 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:29" (2/3) ... [2019-05-23 11:15:29,870 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ca396f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:15:29, skipping insertion in model container [2019-05-23 11:15:29,870 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:15:29" (3/3) ... [2019-05-23 11:15:29,872 INFO L146 ILogger]: Analyzing ICFG standard_init5_false-unreach-call_ground.i [2019-05-23 11:15:29,882 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:15:29,889 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:15:29,905 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:15:29,936 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:15:29,936 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:15:29,936 INFO L146 ILogger]: Hoare is true [2019-05-23 11:15:29,937 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:15:29,937 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:15:29,937 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:15:29,937 INFO L146 ILogger]: Difference is false [2019-05-23 11:15:29,937 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:15:29,938 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:15:29,952 INFO L146 ILogger]: Start isEmpty. Operand 45 states. [2019-05-23 11:15:29,958 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 25 [2019-05-23 11:15:29,959 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:29,960 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] [2019-05-23 11:15:29,962 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:29,966 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:29,966 INFO L146 ILogger]: Analyzing trace with hash -627582432, now seen corresponding path program 1 times [2019-05-23 11:15:29,968 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:29,968 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:30,013 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:30,014 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:30,014 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:30,048 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:30,085 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 11:15:30,087 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:15:30,091 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:15:30,095 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:15:30,107 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:15:30,108 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:15:30,110 INFO L146 ILogger]: Start difference. First operand 45 states. Second operand 2 states. [2019-05-23 11:15:30,129 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:30,130 INFO L146 ILogger]: Finished difference Result 81 states and 103 transitions. [2019-05-23 11:15:30,130 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:15:30,131 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 24 [2019-05-23 11:15:30,131 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:30,140 INFO L146 ILogger]: With dead ends: 81 [2019-05-23 11:15:30,140 INFO L146 ILogger]: Without dead ends: 39 [2019-05-23 11:15:30,143 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 11:15:30,157 INFO L146 ILogger]: Start minimizeSevpa. Operand 39 states. [2019-05-23 11:15:30,173 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 39 to 39. [2019-05-23 11:15:30,174 INFO L146 ILogger]: Start removeUnreachable. Operand 39 states. [2019-05-23 11:15:30,176 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2019-05-23 11:15:30,177 INFO L146 ILogger]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 24 [2019-05-23 11:15:30,177 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:30,177 INFO L146 ILogger]: Abstraction has 39 states and 44 transitions. [2019-05-23 11:15:30,178 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:15:30,178 INFO L146 ILogger]: Start isEmpty. Operand 39 states and 44 transitions. [2019-05-23 11:15:30,179 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 25 [2019-05-23 11:15:30,179 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:30,179 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] [2019-05-23 11:15:30,179 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:30,180 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:30,180 INFO L146 ILogger]: Analyzing trace with hash 2086977592, now seen corresponding path program 1 times [2019-05-23 11:15:30,180 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:30,180 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:30,181 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:30,181 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:30,182 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:30,193 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:30,236 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 11:15:30,236 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:15:30,237 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:15:30,238 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:15:30,238 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:15:30,239 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:15:30,239 INFO L146 ILogger]: Start difference. First operand 39 states and 44 transitions. Second operand 3 states. [2019-05-23 11:15:30,523 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:30,523 INFO L146 ILogger]: Finished difference Result 84 states and 98 transitions. [2019-05-23 11:15:30,524 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:15:30,524 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 24 [2019-05-23 11:15:30,524 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:30,525 INFO L146 ILogger]: With dead ends: 84 [2019-05-23 11:15:30,526 INFO L146 ILogger]: Without dead ends: 54 [2019-05-23 11:15:30,527 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 11:15:30,527 INFO L146 ILogger]: Start minimizeSevpa. Operand 54 states. [2019-05-23 11:15:30,533 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 54 to 44. [2019-05-23 11:15:30,533 INFO L146 ILogger]: Start removeUnreachable. Operand 44 states. [2019-05-23 11:15:30,535 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2019-05-23 11:15:30,535 INFO L146 ILogger]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 24 [2019-05-23 11:15:30,535 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:30,536 INFO L146 ILogger]: Abstraction has 44 states and 49 transitions. [2019-05-23 11:15:30,536 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:15:30,536 INFO L146 ILogger]: Start isEmpty. Operand 44 states and 49 transitions. [2019-05-23 11:15:30,537 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 40 [2019-05-23 11:15:30,537 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:30,538 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:30,538 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:30,538 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:30,538 INFO L146 ILogger]: Analyzing trace with hash 549062398, now seen corresponding path program 1 times [2019-05-23 11:15:30,539 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:30,539 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:30,540 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:30,540 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:30,540 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:30,573 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:30,665 INFO L146 ILogger]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-05-23 11:15:30,666 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:30,666 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:15:30,686 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:30,724 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:30,725 INFO L146 ILogger]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:15:30,732 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:30,776 INFO L146 ILogger]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-05-23 11:15:30,798 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:30,798 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-05-23 11:15:30,799 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:15:30,799 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:15:30,800 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:15:30,800 INFO L146 ILogger]: Start difference. First operand 44 states and 49 transitions. Second operand 5 states. [2019-05-23 11:15:31,114 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:31,114 INFO L146 ILogger]: Finished difference Result 103 states and 117 transitions. [2019-05-23 11:15:31,116 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:15:31,116 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 39 [2019-05-23 11:15:31,116 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:31,117 INFO L146 ILogger]: With dead ends: 103 [2019-05-23 11:15:31,119 INFO L146 ILogger]: Without dead ends: 69 [2019-05-23 11:15:31,119 INFO L146 ILogger]: 0 DeclaredPredicates, 42 GetRequests, 39 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 11:15:31,121 INFO L146 ILogger]: Start minimizeSevpa. Operand 69 states. [2019-05-23 11:15:31,130 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 69 to 59. [2019-05-23 11:15:31,133 INFO L146 ILogger]: Start removeUnreachable. Operand 59 states. [2019-05-23 11:15:31,136 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2019-05-23 11:15:31,136 INFO L146 ILogger]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 39 [2019-05-23 11:15:31,136 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:31,137 INFO L146 ILogger]: Abstraction has 59 states and 64 transitions. [2019-05-23 11:15:31,137 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:15:31,137 INFO L146 ILogger]: Start isEmpty. Operand 59 states and 64 transitions. [2019-05-23 11:15:31,139 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 55 [2019-05-23 11:15:31,139 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:31,139 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:15:31,140 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:31,140 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:31,140 INFO L146 ILogger]: Analyzing trace with hash -1650035848, now seen corresponding path program 2 times [2019-05-23 11:15:31,140 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:31,141 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:31,142 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:31,143 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:31,143 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:31,192 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:31,269 INFO L146 ILogger]: Checked inductivity of 25 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-05-23 11:15:31,269 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:31,269 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 11:15:31,287 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:15:31,338 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:15:31,338 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:31,339 INFO L146 ILogger]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:15:31,344 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:31,385 INFO L146 ILogger]: Checked inductivity of 25 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-05-23 11:15:31,415 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:31,416 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-05-23 11:15:31,416 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:15:31,416 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:15:31,417 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:15:31,417 INFO L146 ILogger]: Start difference. First operand 59 states and 64 transitions. Second operand 6 states. [2019-05-23 11:15:31,849 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:31,849 INFO L146 ILogger]: Finished difference Result 130 states and 144 transitions. [2019-05-23 11:15:31,849 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:15:31,850 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 54 [2019-05-23 11:15:31,850 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:31,851 INFO L146 ILogger]: With dead ends: 130 [2019-05-23 11:15:31,851 INFO L146 ILogger]: Without dead ends: 84 [2019-05-23 11:15:31,852 INFO L146 ILogger]: 0 DeclaredPredicates, 58 GetRequests, 54 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 11:15:31,852 INFO L146 ILogger]: Start minimizeSevpa. Operand 84 states. [2019-05-23 11:15:31,859 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 84 to 74. [2019-05-23 11:15:31,860 INFO L146 ILogger]: Start removeUnreachable. Operand 74 states. [2019-05-23 11:15:31,861 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2019-05-23 11:15:31,861 INFO L146 ILogger]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 54 [2019-05-23 11:15:31,861 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:31,861 INFO L146 ILogger]: Abstraction has 74 states and 79 transitions. [2019-05-23 11:15:31,861 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:15:31,862 INFO L146 ILogger]: Start isEmpty. Operand 74 states and 79 transitions. [2019-05-23 11:15:31,863 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 70 [2019-05-23 11:15:31,864 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:31,864 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:15:31,864 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:31,864 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:31,865 INFO L146 ILogger]: Analyzing trace with hash -1545238722, now seen corresponding path program 3 times [2019-05-23 11:15:31,865 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:31,865 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:31,866 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:31,866 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:31,866 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:31,901 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:32,030 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:15:32,030 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:32,030 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 11:15:32,040 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:15:32,137 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:15:32,137 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:32,138 INFO L146 ILogger]: Trace formula consists of 106 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:15:32,142 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:32,174 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:15:32,199 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:32,200 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-05-23 11:15:32,200 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:15:32,200 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:15:32,201 INFO L146 ILogger]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:15:32,201 INFO L146 ILogger]: Start difference. First operand 74 states and 79 transitions. Second operand 7 states. [2019-05-23 11:15:32,466 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:32,466 INFO L146 ILogger]: Finished difference Result 157 states and 171 transitions. [2019-05-23 11:15:32,467 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:15:32,467 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 69 [2019-05-23 11:15:32,467 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:32,469 INFO L146 ILogger]: With dead ends: 157 [2019-05-23 11:15:32,469 INFO L146 ILogger]: Without dead ends: 99 [2019-05-23 11:15:32,469 INFO L146 ILogger]: 0 DeclaredPredicates, 74 GetRequests, 69 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 11:15:32,470 INFO L146 ILogger]: Start minimizeSevpa. Operand 99 states. [2019-05-23 11:15:32,480 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 99 to 89. [2019-05-23 11:15:32,480 INFO L146 ILogger]: Start removeUnreachable. Operand 89 states. [2019-05-23 11:15:32,481 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 89 states to 89 states and 94 transitions. [2019-05-23 11:15:32,482 INFO L146 ILogger]: Start accepts. Automaton has 89 states and 94 transitions. Word has length 69 [2019-05-23 11:15:32,482 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:32,482 INFO L146 ILogger]: Abstraction has 89 states and 94 transitions. [2019-05-23 11:15:32,482 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:15:32,482 INFO L146 ILogger]: Start isEmpty. Operand 89 states and 94 transitions. [2019-05-23 11:15:32,483 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 85 [2019-05-23 11:15:32,484 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:32,484 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:15:32,484 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:32,484 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:32,485 INFO L146 ILogger]: Analyzing trace with hash -1512089928, now seen corresponding path program 4 times [2019-05-23 11:15:32,485 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:32,485 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:32,486 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:32,486 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:32,486 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:32,523 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:32,647 INFO L146 ILogger]: Checked inductivity of 110 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-05-23 11:15:32,647 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:32,647 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 11:15:32,657 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:15:32,702 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:15:32,702 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:32,704 INFO L146 ILogger]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:15:32,707 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:32,773 INFO L146 ILogger]: Checked inductivity of 110 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-05-23 11:15:32,794 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:32,795 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-05-23 11:15:32,795 INFO L146 ILogger]: Interpolant automaton has 8 states [2019-05-23 11:15:32,795 INFO L146 ILogger]: Constructing interpolant automaton starting with 8 interpolants. [2019-05-23 11:15:32,796 INFO L146 ILogger]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:15:32,796 INFO L146 ILogger]: Start difference. First operand 89 states and 94 transitions. Second operand 8 states. [2019-05-23 11:15:33,647 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:33,648 INFO L146 ILogger]: Finished difference Result 184 states and 198 transitions. [2019-05-23 11:15:33,651 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:15:33,652 INFO L146 ILogger]: Start accepts. Automaton has 8 states. Word has length 84 [2019-05-23 11:15:33,652 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:33,653 INFO L146 ILogger]: With dead ends: 184 [2019-05-23 11:15:33,653 INFO L146 ILogger]: Without dead ends: 114 [2019-05-23 11:15:33,658 INFO L146 ILogger]: 0 DeclaredPredicates, 90 GetRequests, 84 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 11:15:33,659 INFO L146 ILogger]: Start minimizeSevpa. Operand 114 states. [2019-05-23 11:15:33,670 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 114 to 104. [2019-05-23 11:15:33,670 INFO L146 ILogger]: Start removeUnreachable. Operand 104 states. [2019-05-23 11:15:33,671 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 104 states to 104 states and 109 transitions. [2019-05-23 11:15:33,675 INFO L146 ILogger]: Start accepts. Automaton has 104 states and 109 transitions. Word has length 84 [2019-05-23 11:15:33,675 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:33,675 INFO L146 ILogger]: Abstraction has 104 states and 109 transitions. [2019-05-23 11:15:33,675 INFO L146 ILogger]: Interpolant automaton has 8 states. [2019-05-23 11:15:33,676 INFO L146 ILogger]: Start isEmpty. Operand 104 states and 109 transitions. [2019-05-23 11:15:33,678 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 100 [2019-05-23 11:15:33,679 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:33,679 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:15:33,679 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:33,680 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:33,682 INFO L146 ILogger]: Analyzing trace with hash 1440028542, now seen corresponding path program 5 times [2019-05-23 11:15:33,682 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:33,682 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:33,683 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:33,683 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:33,684 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:33,760 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:33,902 INFO L146 ILogger]: Checked inductivity of 175 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2019-05-23 11:15:33,903 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:33,903 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 11:15:33,916 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:15:36,262 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-05-23 11:15:36,263 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:36,267 INFO L146 ILogger]: Trace formula consists of 146 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:15:36,271 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:36,305 INFO L146 ILogger]: Checked inductivity of 175 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2019-05-23 11:15:36,328 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:36,328 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-05-23 11:15:36,328 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:15:36,329 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:15:36,329 INFO L146 ILogger]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:15:36,329 INFO L146 ILogger]: Start difference. First operand 104 states and 109 transitions. Second operand 9 states. [2019-05-23 11:15:36,539 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:36,539 INFO L146 ILogger]: Finished difference Result 211 states and 225 transitions. [2019-05-23 11:15:36,539 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:15:36,540 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 99 [2019-05-23 11:15:36,540 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:36,541 INFO L146 ILogger]: With dead ends: 211 [2019-05-23 11:15:36,542 INFO L146 ILogger]: Without dead ends: 129 [2019-05-23 11:15:36,543 INFO L146 ILogger]: 0 DeclaredPredicates, 106 GetRequests, 99 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 11:15:36,543 INFO L146 ILogger]: Start minimizeSevpa. Operand 129 states. [2019-05-23 11:15:36,551 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 129 to 119. [2019-05-23 11:15:36,552 INFO L146 ILogger]: Start removeUnreachable. Operand 119 states. [2019-05-23 11:15:36,552 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 119 states to 119 states and 124 transitions. [2019-05-23 11:15:36,553 INFO L146 ILogger]: Start accepts. Automaton has 119 states and 124 transitions. Word has length 99 [2019-05-23 11:15:36,553 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:36,553 INFO L146 ILogger]: Abstraction has 119 states and 124 transitions. [2019-05-23 11:15:36,553 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:15:36,553 INFO L146 ILogger]: Start isEmpty. Operand 119 states and 124 transitions. [2019-05-23 11:15:36,555 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 115 [2019-05-23 11:15:36,555 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:36,555 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:15:36,556 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:36,556 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:36,556 INFO L146 ILogger]: Analyzing trace with hash 837249528, now seen corresponding path program 6 times [2019-05-23 11:15:36,556 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:36,556 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:36,557 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:36,557 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:36,558 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:36,587 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:36,739 INFO L146 ILogger]: Checked inductivity of 255 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2019-05-23 11:15:36,740 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:36,740 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 11:15:36,753 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:15:38,197 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:15:38,197 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:38,202 INFO L146 ILogger]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:15:38,205 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:38,274 INFO L146 ILogger]: Checked inductivity of 255 backedges. 16 proven. 51 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2019-05-23 11:15:38,295 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:38,296 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 12 [2019-05-23 11:15:38,296 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:15:38,296 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:15:38,297 INFO L146 ILogger]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:15:38,297 INFO L146 ILogger]: Start difference. First operand 119 states and 124 transitions. Second operand 12 states. [2019-05-23 11:15:38,618 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:38,618 INFO L146 ILogger]: Finished difference Result 243 states and 262 transitions. [2019-05-23 11:15:38,620 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:15:38,621 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 114 [2019-05-23 11:15:38,621 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:38,622 INFO L146 ILogger]: With dead ends: 243 [2019-05-23 11:15:38,622 INFO L146 ILogger]: Without dead ends: 149 [2019-05-23 11:15:38,623 INFO L146 ILogger]: 0 DeclaredPredicates, 122 GetRequests, 112 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 11:15:38,623 INFO L146 ILogger]: Start minimizeSevpa. Operand 149 states. [2019-05-23 11:15:38,634 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 149 to 149. [2019-05-23 11:15:38,634 INFO L146 ILogger]: Start removeUnreachable. Operand 149 states. [2019-05-23 11:15:38,636 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 149 states to 149 states and 154 transitions. [2019-05-23 11:15:38,636 INFO L146 ILogger]: Start accepts. Automaton has 149 states and 154 transitions. Word has length 114 [2019-05-23 11:15:38,636 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:38,637 INFO L146 ILogger]: Abstraction has 149 states and 154 transitions. [2019-05-23 11:15:38,637 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:15:38,637 INFO L146 ILogger]: Start isEmpty. Operand 149 states and 154 transitions. [2019-05-23 11:15:38,639 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 145 [2019-05-23 11:15:38,639 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:38,640 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:15:38,640 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:38,640 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:38,640 INFO L146 ILogger]: Analyzing trace with hash -879317704, now seen corresponding path program 7 times [2019-05-23 11:15:38,641 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:38,641 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:38,641 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:38,642 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:38,642 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:38,706 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:38,841 INFO L146 ILogger]: Checked inductivity of 460 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2019-05-23 11:15:38,841 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:38,841 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 11:15:38,850 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:38,884 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:38,885 INFO L146 ILogger]: Trace formula consists of 206 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:15:38,888 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:38,926 INFO L146 ILogger]: Checked inductivity of 460 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2019-05-23 11:15:38,947 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:38,947 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-05-23 11:15:38,948 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:15:38,948 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:15:38,948 INFO L146 ILogger]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:15:38,948 INFO L146 ILogger]: Start difference. First operand 149 states and 154 transitions. Second operand 12 states. [2019-05-23 11:15:39,369 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:39,369 INFO L146 ILogger]: Finished difference Result 292 states and 306 transitions. [2019-05-23 11:15:39,370 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:15:39,370 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 144 [2019-05-23 11:15:39,371 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:39,372 INFO L146 ILogger]: With dead ends: 292 [2019-05-23 11:15:39,372 INFO L146 ILogger]: Without dead ends: 174 [2019-05-23 11:15:39,373 INFO L146 ILogger]: 0 DeclaredPredicates, 154 GetRequests, 144 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 11:15:39,373 INFO L146 ILogger]: Start minimizeSevpa. Operand 174 states. [2019-05-23 11:15:39,380 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 174 to 164. [2019-05-23 11:15:39,380 INFO L146 ILogger]: Start removeUnreachable. Operand 164 states. [2019-05-23 11:15:39,381 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 164 states to 164 states and 169 transitions. [2019-05-23 11:15:39,381 INFO L146 ILogger]: Start accepts. Automaton has 164 states and 169 transitions. Word has length 144 [2019-05-23 11:15:39,382 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:39,382 INFO L146 ILogger]: Abstraction has 164 states and 169 transitions. [2019-05-23 11:15:39,382 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:15:39,382 INFO L146 ILogger]: Start isEmpty. Operand 164 states and 169 transitions. [2019-05-23 11:15:39,384 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 160 [2019-05-23 11:15:39,384 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:39,384 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:15:39,384 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:39,385 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:39,385 INFO L146 ILogger]: Analyzing trace with hash 572549118, now seen corresponding path program 8 times [2019-05-23 11:15:39,385 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:39,385 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:39,386 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:39,386 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:39,386 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:39,442 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:39,718 INFO L146 ILogger]: Checked inductivity of 585 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2019-05-23 11:15:39,719 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:39,719 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 11:15:39,729 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:15:39,791 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:15:39,791 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:39,792 INFO L146 ILogger]: Trace formula consists of 226 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:15:39,795 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:39,839 INFO L146 ILogger]: Checked inductivity of 585 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2019-05-23 11:15:39,858 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:39,858 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2019-05-23 11:15:39,859 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:15:39,859 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:15:39,859 INFO L146 ILogger]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:15:39,859 INFO L146 ILogger]: Start difference. First operand 164 states and 169 transitions. Second operand 13 states. [2019-05-23 11:15:40,323 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:40,324 INFO L146 ILogger]: Finished difference Result 319 states and 333 transitions. [2019-05-23 11:15:40,324 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:15:40,324 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 159 [2019-05-23 11:15:40,325 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:40,326 INFO L146 ILogger]: With dead ends: 319 [2019-05-23 11:15:40,326 INFO L146 ILogger]: Without dead ends: 189 [2019-05-23 11:15:40,327 INFO L146 ILogger]: 0 DeclaredPredicates, 170 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:15:40,327 INFO L146 ILogger]: Start minimizeSevpa. Operand 189 states. [2019-05-23 11:15:40,334 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 189 to 179. [2019-05-23 11:15:40,334 INFO L146 ILogger]: Start removeUnreachable. Operand 179 states. [2019-05-23 11:15:40,335 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 179 states to 179 states and 184 transitions. [2019-05-23 11:15:40,335 INFO L146 ILogger]: Start accepts. Automaton has 179 states and 184 transitions. Word has length 159 [2019-05-23 11:15:40,335 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:40,336 INFO L146 ILogger]: Abstraction has 179 states and 184 transitions. [2019-05-23 11:15:40,336 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:15:40,336 INFO L146 ILogger]: Start isEmpty. Operand 179 states and 184 transitions. [2019-05-23 11:15:40,338 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 175 [2019-05-23 11:15:40,338 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:40,338 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:15:40,338 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:40,339 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:40,339 INFO L146 ILogger]: Analyzing trace with hash 1774526584, now seen corresponding path program 9 times [2019-05-23 11:15:40,339 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:40,339 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:40,340 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:40,340 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:40,340 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:40,367 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:41,148 INFO L146 ILogger]: Checked inductivity of 725 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2019-05-23 11:15:41,148 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:41,148 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 11:15:41,158 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:15:50,500 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2019-05-23 11:15:50,501 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:50,507 INFO L146 ILogger]: Trace formula consists of 246 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:15:50,509 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:50,542 INFO L146 ILogger]: Checked inductivity of 725 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2019-05-23 11:15:50,579 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:50,579 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2019-05-23 11:15:50,580 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:15:50,580 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:15:50,580 INFO L146 ILogger]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:15:50,581 INFO L146 ILogger]: Start difference. First operand 179 states and 184 transitions. Second operand 14 states. [2019-05-23 11:15:51,099 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:51,100 INFO L146 ILogger]: Finished difference Result 346 states and 360 transitions. [2019-05-23 11:15:51,100 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:15:51,100 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 174 [2019-05-23 11:15:51,101 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:51,102 INFO L146 ILogger]: With dead ends: 346 [2019-05-23 11:15:51,103 INFO L146 ILogger]: Without dead ends: 204 [2019-05-23 11:15:51,103 INFO L146 ILogger]: 0 DeclaredPredicates, 186 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:15:51,105 INFO L146 ILogger]: Start minimizeSevpa. Operand 204 states. [2019-05-23 11:15:51,114 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 204 to 194. [2019-05-23 11:15:51,114 INFO L146 ILogger]: Start removeUnreachable. Operand 194 states. [2019-05-23 11:15:51,116 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 194 states to 194 states and 199 transitions. [2019-05-23 11:15:51,116 INFO L146 ILogger]: Start accepts. Automaton has 194 states and 199 transitions. Word has length 174 [2019-05-23 11:15:51,116 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:51,116 INFO L146 ILogger]: Abstraction has 194 states and 199 transitions. [2019-05-23 11:15:51,117 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:15:51,117 INFO L146 ILogger]: Start isEmpty. Operand 194 states and 199 transitions. [2019-05-23 11:15:51,119 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 190 [2019-05-23 11:15:51,119 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:51,119 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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 11:15:51,119 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:51,120 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:51,120 INFO L146 ILogger]: Analyzing trace with hash -1576261570, now seen corresponding path program 10 times [2019-05-23 11:15:51,120 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:51,120 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:51,121 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:51,121 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:51,121 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:51,148 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:51,411 INFO L146 ILogger]: Checked inductivity of 880 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 704 trivial. 0 not checked. [2019-05-23 11:15:51,411 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:51,412 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:51,421 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:15:51,474 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:15:51,475 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:51,476 INFO L146 ILogger]: Trace formula consists of 266 conjuncts, 13 conjunts are in the unsatisfiable core [2019-05-23 11:15:51,478 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:51,520 INFO L146 ILogger]: Checked inductivity of 880 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 704 trivial. 0 not checked. [2019-05-23 11:15:51,552 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:51,552 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2019-05-23 11:15:51,553 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:15:51,553 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:15:51,553 INFO L146 ILogger]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:15:51,554 INFO L146 ILogger]: Start difference. First operand 194 states and 199 transitions. Second operand 15 states. [2019-05-23 11:15:52,214 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:52,214 INFO L146 ILogger]: Finished difference Result 373 states and 387 transitions. [2019-05-23 11:15:52,215 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 11:15:52,215 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 189 [2019-05-23 11:15:52,215 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:52,217 INFO L146 ILogger]: With dead ends: 373 [2019-05-23 11:15:52,217 INFO L146 ILogger]: Without dead ends: 219 [2019-05-23 11:15:52,218 INFO L146 ILogger]: 0 DeclaredPredicates, 202 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:15:52,219 INFO L146 ILogger]: Start minimizeSevpa. Operand 219 states. [2019-05-23 11:15:52,223 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 219 to 209. [2019-05-23 11:15:52,224 INFO L146 ILogger]: Start removeUnreachable. Operand 209 states. [2019-05-23 11:15:52,225 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 209 states to 209 states and 214 transitions. [2019-05-23 11:15:52,225 INFO L146 ILogger]: Start accepts. Automaton has 209 states and 214 transitions. Word has length 189 [2019-05-23 11:15:52,225 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:52,225 INFO L146 ILogger]: Abstraction has 209 states and 214 transitions. [2019-05-23 11:15:52,225 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:15:52,225 INFO L146 ILogger]: Start isEmpty. Operand 209 states and 214 transitions. [2019-05-23 11:15:52,227 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 205 [2019-05-23 11:15:52,228 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:52,228 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 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 11:15:52,228 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:52,228 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:52,229 INFO L146 ILogger]: Analyzing trace with hash -263535688, now seen corresponding path program 11 times [2019-05-23 11:15:52,229 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:52,229 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:52,230 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:52,230 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:52,230 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:52,255 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:52,456 INFO L146 ILogger]: Checked inductivity of 1050 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2019-05-23 11:15:52,456 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:52,456 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:52,466 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1