java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-crafted/zero_sum_const1_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:29:32,721 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:29:32,723 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:29:32,741 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:29:32,742 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:29:32,744 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:29:32,745 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:29:32,748 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:29:32,749 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:29:32,750 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:29:32,751 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:29:32,752 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:29:32,753 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:29:32,754 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:29:32,755 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:29:32,756 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:29:32,757 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:29:32,758 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:29:32,760 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:29:32,762 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:29:32,763 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:29:32,764 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:29:32,766 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:29:32,767 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:29:32,767 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:29:32,768 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:29:32,768 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:29:32,769 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:29:32,769 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:29:32,770 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:29:32,771 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:29:32,772 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:29:32,773 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:29:32,773 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:29:32,774 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:29:32,774 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:29:32,774 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:29:32,775 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:29:32,776 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:29:32,776 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:29:32,800 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:29:32,800 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:29:32,802 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:29:32,802 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:29:32,802 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:29:32,802 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:29:32,803 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:29:32,803 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:29:32,804 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:29:32,804 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:29:32,804 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:29:32,804 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:29:32,804 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:29:32,805 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:29:32,805 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:29:32,805 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:29:32,805 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:29:32,805 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:29:32,806 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:29:32,807 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:29:32,807 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:29:32,807 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:29:32,808 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:29:32,808 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:29:32,808 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:29:32,808 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:29:32,808 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:29:32,809 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:29:32,809 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 11:29:32,848 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:29:32,860 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:29:32,864 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:29:32,865 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:29:32,865 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:29:32,866 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-crafted/zero_sum_const1_true-unreach-call.c [2019-05-23 11:29:32,922 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d5e08a90/f0fb8246c9664ab6962d7adb66f255b9/FLAGcb674f919 [2019-05-23 11:29:33,373 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:29:33,373 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-crafted/zero_sum_const1_true-unreach-call.c [2019-05-23 11:29:33,381 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d5e08a90/f0fb8246c9664ab6962d7adb66f255b9/FLAGcb674f919 [2019-05-23 11:29:33,750 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d5e08a90/f0fb8246c9664ab6962d7adb66f255b9 [2019-05-23 11:29:33,760 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:29:33,762 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:29:33,765 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:29:33,765 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:29:33,770 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:29:33,771 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:29:33" (1/1) ... [2019-05-23 11:29:33,773 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c807de1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:33, skipping insertion in model container [2019-05-23 11:29:33,773 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:29:33" (1/1) ... [2019-05-23 11:29:33,781 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:29:33,798 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:29:34,044 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:29:34,052 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:29:34,084 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:29:34,109 INFO L146 ILogger]: Completed translation [2019-05-23 11:29:34,110 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:34 WrapperNode [2019-05-23 11:29:34,110 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:29:34,111 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:29:34,111 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:29:34,111 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:29:34,121 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:34" (1/1) ... [2019-05-23 11:29:34,130 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:34" (1/1) ... [2019-05-23 11:29:34,160 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:29:34,161 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:29:34,161 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:29:34,161 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:29:34,173 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:34" (1/1) ... [2019-05-23 11:29:34,173 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:34" (1/1) ... [2019-05-23 11:29:34,175 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:34" (1/1) ... [2019-05-23 11:29:34,175 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:34" (1/1) ... [2019-05-23 11:29:34,182 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:34" (1/1) ... [2019-05-23 11:29:34,285 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:34" (1/1) ... [2019-05-23 11:29:34,287 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:34" (1/1) ... [2019-05-23 11:29:34,289 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:29:34,289 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:29:34,289 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:29:34,289 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:29:34,290 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:34" (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 11:29:34,345 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:29:34,345 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:29:34,345 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:29:34,345 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:29:34,345 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:29:34,346 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:29:34,816 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:29:34,817 INFO L146 ILogger]: Removed 9 assume(true) statements. [2019-05-23 11:29:34,818 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:29:34 BoogieIcfgContainer [2019-05-23 11:29:34,818 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:29:34,819 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:29:34,819 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:29:34,823 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:29:34,823 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:29:33" (1/3) ... [2019-05-23 11:29:34,824 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@668dc14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:29:34, skipping insertion in model container [2019-05-23 11:29:34,824 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:34" (2/3) ... [2019-05-23 11:29:34,824 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@668dc14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:29:34, skipping insertion in model container [2019-05-23 11:29:34,825 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:29:34" (3/3) ... [2019-05-23 11:29:34,826 INFO L146 ILogger]: Analyzing ICFG zero_sum_const1_true-unreach-call.c [2019-05-23 11:29:34,836 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:29:34,844 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:29:34,860 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:29:34,894 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:29:34,894 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:29:34,895 INFO L146 ILogger]: Hoare is true [2019-05-23 11:29:34,895 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:29:34,896 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:29:34,896 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:29:34,896 INFO L146 ILogger]: Difference is false [2019-05-23 11:29:34,896 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:29:34,896 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:29:34,914 INFO L146 ILogger]: Start isEmpty. Operand 46 states. [2019-05-23 11:29:34,921 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 24 [2019-05-23 11:29:34,921 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:34,922 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] [2019-05-23 11:29:34,924 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:34,929 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:34,929 INFO L146 ILogger]: Analyzing trace with hash 1180468121, now seen corresponding path program 1 times [2019-05-23 11:29:34,931 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:34,932 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:34,984 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:34,984 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:34,984 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:35,021 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:35,055 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 11:29:35,058 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:29:35,059 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:29:35,062 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:29:35,076 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:29:35,077 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:29:35,079 INFO L146 ILogger]: Start difference. First operand 46 states. Second operand 2 states. [2019-05-23 11:29:35,097 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:35,098 INFO L146 ILogger]: Finished difference Result 74 states and 85 transitions. [2019-05-23 11:29:35,098 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:29:35,099 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 23 [2019-05-23 11:29:35,100 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:35,108 INFO L146 ILogger]: With dead ends: 74 [2019-05-23 11:29:35,108 INFO L146 ILogger]: Without dead ends: 40 [2019-05-23 11:29:35,111 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 11:29:35,125 INFO L146 ILogger]: Start minimizeSevpa. Operand 40 states. [2019-05-23 11:29:35,139 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-05-23 11:29:35,140 INFO L146 ILogger]: Start removeUnreachable. Operand 40 states. [2019-05-23 11:29:35,141 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2019-05-23 11:29:35,143 INFO L146 ILogger]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 23 [2019-05-23 11:29:35,143 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:35,143 INFO L146 ILogger]: Abstraction has 40 states and 42 transitions. [2019-05-23 11:29:35,143 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:29:35,143 INFO L146 ILogger]: Start isEmpty. Operand 40 states and 42 transitions. [2019-05-23 11:29:35,144 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 24 [2019-05-23 11:29:35,144 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:35,145 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] [2019-05-23 11:29:35,145 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:35,145 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:35,146 INFO L146 ILogger]: Analyzing trace with hash -1125497041, now seen corresponding path program 1 times [2019-05-23 11:29:35,146 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:35,146 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:35,147 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:35,147 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:35,147 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:35,167 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:35,263 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 11:29:35,263 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:29:35,263 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:29:35,266 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:29:35,267 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:29:35,267 INFO L146 ILogger]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:29:35,268 INFO L146 ILogger]: Start difference. First operand 40 states and 42 transitions. Second operand 5 states. [2019-05-23 11:29:35,401 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:35,402 INFO L146 ILogger]: Finished difference Result 53 states and 56 transitions. [2019-05-23 11:29:35,402 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:29:35,402 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 23 [2019-05-23 11:29:35,403 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:35,404 INFO L146 ILogger]: With dead ends: 53 [2019-05-23 11:29:35,404 INFO L146 ILogger]: Without dead ends: 47 [2019-05-23 11:29:35,405 INFO L146 ILogger]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:29:35,406 INFO L146 ILogger]: Start minimizeSevpa. Operand 47 states. [2019-05-23 11:29:35,411 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 47 to 43. [2019-05-23 11:29:35,411 INFO L146 ILogger]: Start removeUnreachable. Operand 43 states. [2019-05-23 11:29:35,413 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2019-05-23 11:29:35,414 INFO L146 ILogger]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 23 [2019-05-23 11:29:35,414 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:35,414 INFO L146 ILogger]: Abstraction has 43 states and 46 transitions. [2019-05-23 11:29:35,414 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:29:35,414 INFO L146 ILogger]: Start isEmpty. Operand 43 states and 46 transitions. [2019-05-23 11:29:35,415 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 31 [2019-05-23 11:29:35,415 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:35,416 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 11:29:35,416 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:35,416 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:35,416 INFO L146 ILogger]: Analyzing trace with hash 1292088432, now seen corresponding path program 1 times [2019-05-23 11:29:35,417 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:35,417 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:35,418 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:35,418 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:35,418 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:35,433 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:35,757 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:35,757 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:35,758 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 11:29:35,778 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:35,815 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:35,817 INFO L146 ILogger]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:29:35,824 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:35,899 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:29:35,920 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:29:35,921 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2019-05-23 11:29:35,922 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:29:35,922 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:29:35,923 INFO L146 ILogger]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:29:35,923 INFO L146 ILogger]: Start difference. First operand 43 states and 46 transitions. Second operand 7 states. [2019-05-23 11:29:36,309 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:36,309 INFO L146 ILogger]: Finished difference Result 83 states and 91 transitions. [2019-05-23 11:29:36,313 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:29:36,313 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 30 [2019-05-23 11:29:36,313 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:36,314 INFO L146 ILogger]: With dead ends: 83 [2019-05-23 11:29:36,314 INFO L146 ILogger]: Without dead ends: 58 [2019-05-23 11:29:36,315 INFO L146 ILogger]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:29:36,315 INFO L146 ILogger]: Start minimizeSevpa. Operand 58 states. [2019-05-23 11:29:36,320 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 58 to 50. [2019-05-23 11:29:36,321 INFO L146 ILogger]: Start removeUnreachable. Operand 50 states. [2019-05-23 11:29:36,322 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2019-05-23 11:29:36,322 INFO L146 ILogger]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 30 [2019-05-23 11:29:36,322 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:36,322 INFO L146 ILogger]: Abstraction has 50 states and 52 transitions. [2019-05-23 11:29:36,322 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:29:36,322 INFO L146 ILogger]: Start isEmpty. Operand 50 states and 52 transitions. [2019-05-23 11:29:36,324 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 50 [2019-05-23 11:29:36,324 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:36,324 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:36,325 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:36,325 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:36,325 INFO L146 ILogger]: Analyzing trace with hash -906186485, now seen corresponding path program 1 times [2019-05-23 11:29:36,325 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:36,325 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:36,326 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:36,326 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:36,326 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:36,346 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:36,429 INFO L146 ILogger]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-05-23 11:29:36,430 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:36,431 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 11:29:36,449 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:36,487 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:36,488 INFO L146 ILogger]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:36,494 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:36,633 INFO L146 ILogger]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-05-23 11:29:36,661 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:36,661 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:36,661 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:36,662 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:36,663 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:36,663 INFO L146 ILogger]: Start difference. First operand 50 states and 52 transitions. Second operand 9 states. [2019-05-23 11:29:37,219 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:37,219 INFO L146 ILogger]: Finished difference Result 94 states and 98 transitions. [2019-05-23 11:29:37,220 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:37,220 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 49 [2019-05-23 11:29:37,220 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:37,222 INFO L146 ILogger]: With dead ends: 94 [2019-05-23 11:29:37,222 INFO L146 ILogger]: Without dead ends: 63 [2019-05-23 11:29:37,223 INFO L146 ILogger]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:37,224 INFO L146 ILogger]: Start minimizeSevpa. Operand 63 states. [2019-05-23 11:29:37,228 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 63 to 55. [2019-05-23 11:29:37,228 INFO L146 ILogger]: Start removeUnreachable. Operand 55 states. [2019-05-23 11:29:37,229 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2019-05-23 11:29:37,230 INFO L146 ILogger]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 49 [2019-05-23 11:29:37,230 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:37,230 INFO L146 ILogger]: Abstraction has 55 states and 57 transitions. [2019-05-23 11:29:37,230 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:37,230 INFO L146 ILogger]: Start isEmpty. Operand 55 states and 57 transitions. [2019-05-23 11:29:37,232 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 55 [2019-05-23 11:29:37,232 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:37,232 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:37,232 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:37,233 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:37,233 INFO L146 ILogger]: Analyzing trace with hash -1237097257, now seen corresponding path program 2 times [2019-05-23 11:29:37,233 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:37,233 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:37,234 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:37,234 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:37,235 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:37,251 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:37,348 INFO L146 ILogger]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-05-23 11:29:37,348 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:37,348 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 11:29:37,365 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:29:37,395 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:29:37,395 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:37,396 INFO L146 ILogger]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:37,400 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:37,499 INFO L146 ILogger]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-05-23 11:29:37,518 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:37,518 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:37,519 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:37,519 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:37,520 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:37,520 INFO L146 ILogger]: Start difference. First operand 55 states and 57 transitions. Second operand 9 states. [2019-05-23 11:29:37,847 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:37,848 INFO L146 ILogger]: Finished difference Result 89 states and 92 transitions. [2019-05-23 11:29:37,848 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:37,848 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 54 [2019-05-23 11:29:37,849 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:37,850 INFO L146 ILogger]: With dead ends: 89 [2019-05-23 11:29:37,850 INFO L146 ILogger]: Without dead ends: 67 [2019-05-23 11:29:37,850 INFO L146 ILogger]: 0 DeclaredPredicates, 62 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:37,851 INFO L146 ILogger]: Start minimizeSevpa. Operand 67 states. [2019-05-23 11:29:37,859 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 67 to 62. [2019-05-23 11:29:37,859 INFO L146 ILogger]: Start removeUnreachable. Operand 62 states. [2019-05-23 11:29:37,862 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2019-05-23 11:29:37,863 INFO L146 ILogger]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 54 [2019-05-23 11:29:37,863 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:37,863 INFO L146 ILogger]: Abstraction has 62 states and 64 transitions. [2019-05-23 11:29:37,863 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:37,863 INFO L146 ILogger]: Start isEmpty. Operand 62 states and 64 transitions. [2019-05-23 11:29:37,864 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 62 [2019-05-23 11:29:37,864 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:37,865 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:37,865 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:37,865 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:37,865 INFO L146 ILogger]: Analyzing trace with hash -1701819761, now seen corresponding path program 3 times [2019-05-23 11:29:37,866 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:37,869 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:37,870 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:37,870 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:37,870 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:37,952 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:38,806 WARN L146 ILogger]: Spent 123.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 22 [2019-05-23 11:29:39,254 WARN L146 ILogger]: Spent 173.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 30 [2019-05-23 11:29:40,278 INFO L146 ILogger]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:40,278 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:40,278 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 11:29:40,296 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:29:40,327 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:29:40,327 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:40,329 INFO L146 ILogger]: Trace formula consists of 103 conjuncts, 48 conjunts are in the unsatisfiable core [2019-05-23 11:29:40,333 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:41,804 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:29:41,811 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:29:41,812 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2019-05-23 11:29:41,812 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:29:41,827 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:29:41,828 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:29:41,828 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:3 [2019-05-23 11:29:41,936 INFO L146 ILogger]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:41,955 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:41,956 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 56 [2019-05-23 11:29:41,956 INFO L146 ILogger]: Interpolant automaton has 56 states [2019-05-23 11:29:41,957 INFO L146 ILogger]: Constructing interpolant automaton starting with 56 interpolants. [2019-05-23 11:29:41,958 INFO L146 ILogger]: CoverageRelationStatistics Valid=305, Invalid=2775, Unknown=0, NotChecked=0, Total=3080 [2019-05-23 11:29:41,959 INFO L146 ILogger]: Start difference. First operand 62 states and 64 transitions. Second operand 56 states. [2019-05-23 11:29:42,873 WARN L146 ILogger]: Spent 107.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2019-05-23 11:29:48,216 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:48,216 INFO L146 ILogger]: Finished difference Result 149 states and 155 transitions. [2019-05-23 11:29:48,216 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2019-05-23 11:29:48,216 INFO L146 ILogger]: Start accepts. Automaton has 56 states. Word has length 61 [2019-05-23 11:29:48,217 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:48,219 INFO L146 ILogger]: With dead ends: 149 [2019-05-23 11:29:48,219 INFO L146 ILogger]: Without dead ends: 139 [2019-05-23 11:29:48,225 INFO L146 ILogger]: 0 DeclaredPredicates, 146 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3895 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=1245, Invalid=11187, Unknown=0, NotChecked=0, Total=12432 [2019-05-23 11:29:48,226 INFO L146 ILogger]: Start minimizeSevpa. Operand 139 states. [2019-05-23 11:29:48,235 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 139 to 77. [2019-05-23 11:29:48,235 INFO L146 ILogger]: Start removeUnreachable. Operand 77 states. [2019-05-23 11:29:48,236 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 77 states to 77 states and 80 transitions. [2019-05-23 11:29:48,236 INFO L146 ILogger]: Start accepts. Automaton has 77 states and 80 transitions. Word has length 61 [2019-05-23 11:29:48,237 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:48,237 INFO L146 ILogger]: Abstraction has 77 states and 80 transitions. [2019-05-23 11:29:48,237 INFO L146 ILogger]: Interpolant automaton has 56 states. [2019-05-23 11:29:48,237 INFO L146 ILogger]: Start isEmpty. Operand 77 states and 80 transitions. [2019-05-23 11:29:48,238 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 69 [2019-05-23 11:29:48,238 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:48,238 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2019-05-23 11:29:48,239 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:48,239 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:48,239 INFO L146 ILogger]: Analyzing trace with hash -2137709296, now seen corresponding path program 4 times [2019-05-23 11:29:48,239 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:48,239 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:48,240 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:48,240 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:48,241 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:48,253 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:48,398 INFO L146 ILogger]: Checked inductivity of 40 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:29:48,399 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:48,399 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 11:29:48,408 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:29:48,444 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:29:48,444 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:48,445 INFO L146 ILogger]: Trace formula consists of 112 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:29:48,448 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:48,599 INFO L146 ILogger]: Checked inductivity of 40 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-05-23 11:29:48,617 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:48,617 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2019-05-23 11:29:48,617 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:29:48,618 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:29:48,618 INFO L146 ILogger]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:29:48,618 INFO L146 ILogger]: Start difference. First operand 77 states and 80 transitions. Second operand 21 states. [2019-05-23 11:29:49,610 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:49,610 INFO L146 ILogger]: Finished difference Result 156 states and 162 transitions. [2019-05-23 11:29:49,611 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:29:49,611 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 68 [2019-05-23 11:29:49,611 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:49,613 INFO L146 ILogger]: With dead ends: 156 [2019-05-23 11:29:49,613 INFO L146 ILogger]: Without dead ends: 127 [2019-05-23 11:29:49,615 INFO L146 ILogger]: 0 DeclaredPredicates, 102 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=279, Invalid=1443, Unknown=0, NotChecked=0, Total=1722 [2019-05-23 11:29:49,615 INFO L146 ILogger]: Start minimizeSevpa. Operand 127 states. [2019-05-23 11:29:49,629 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 127 to 113. [2019-05-23 11:29:49,630 INFO L146 ILogger]: Start removeUnreachable. Operand 113 states. [2019-05-23 11:29:49,635 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 113 states to 113 states and 117 transitions. [2019-05-23 11:29:49,635 INFO L146 ILogger]: Start accepts. Automaton has 113 states and 117 transitions. Word has length 68 [2019-05-23 11:29:49,636 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:49,636 INFO L146 ILogger]: Abstraction has 113 states and 117 transitions. [2019-05-23 11:29:49,636 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:29:49,636 INFO L146 ILogger]: Start isEmpty. Operand 113 states and 117 transitions. [2019-05-23 11:29:49,637 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 69 [2019-05-23 11:29:49,637 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:49,638 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2019-05-23 11:29:49,638 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:49,638 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:49,638 INFO L146 ILogger]: Analyzing trace with hash -1614805545, now seen corresponding path program 5 times [2019-05-23 11:29:49,638 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:49,639 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:49,640 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:49,640 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:49,640 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:49,659 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:49,957 INFO L146 ILogger]: Checked inductivity of 40 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-05-23 11:29:49,957 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:49,957 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 11:29:49,965 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:29:49,993 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-05-23 11:29:49,993 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:49,994 INFO L146 ILogger]: Trace formula consists of 114 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:29:49,997 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:50,100 INFO L146 ILogger]: Checked inductivity of 40 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-05-23 11:29:50,119 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:50,120 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:29:50,120 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:29:50,120 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:29:50,120 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:29:50,121 INFO L146 ILogger]: Start difference. First operand 113 states and 117 transitions. Second operand 20 states. [2019-05-23 11:29:50,412 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:50,413 INFO L146 ILogger]: Finished difference Result 122 states and 125 transitions. [2019-05-23 11:29:50,413 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:29:50,413 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 68 [2019-05-23 11:29:50,413 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:50,414 INFO L146 ILogger]: With dead ends: 122 [2019-05-23 11:29:50,414 INFO L146 ILogger]: Without dead ends: 77 [2019-05-23 11:29:50,415 INFO L146 ILogger]: 0 DeclaredPredicates, 90 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:29:50,415 INFO L146 ILogger]: Start minimizeSevpa. Operand 77 states. [2019-05-23 11:29:50,422 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 77 to 74. [2019-05-23 11:29:50,422 INFO L146 ILogger]: Start removeUnreachable. Operand 74 states. [2019-05-23 11:29:50,428 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2019-05-23 11:29:50,428 INFO L146 ILogger]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 68 [2019-05-23 11:29:50,428 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:50,429 INFO L146 ILogger]: Abstraction has 74 states and 76 transitions. [2019-05-23 11:29:50,429 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:29:50,429 INFO L146 ILogger]: Start isEmpty. Operand 74 states and 76 transitions. [2019-05-23 11:29:50,434 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 74 [2019-05-23 11:29:50,434 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:50,434 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-05-23 11:29:50,434 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:50,435 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:50,436 INFO L146 ILogger]: Analyzing trace with hash -1886042485, now seen corresponding path program 6 times [2019-05-23 11:29:50,436 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:50,436 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:50,437 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:50,437 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:50,437 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:50,459 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:50,666 INFO L146 ILogger]: Checked inductivity of 51 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-05-23 11:29:50,667 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:50,667 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 11:29:50,684 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:29:50,725 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-05-23 11:29:50,725 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:50,726 INFO L146 ILogger]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:29:50,729 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:50,860 INFO L146 ILogger]: Checked inductivity of 51 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:29:50,880 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:50,880 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2019-05-23 11:29:50,880 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:29:50,881 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:29:50,881 INFO L146 ILogger]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:29:50,881 INFO L146 ILogger]: Start difference. First operand 74 states and 76 transitions. Second operand 21 states. [2019-05-23 11:29:51,455 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:51,455 INFO L146 ILogger]: Finished difference Result 92 states and 94 transitions. [2019-05-23 11:29:51,455 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:29:51,456 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 73 [2019-05-23 11:29:51,456 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:51,457 INFO L146 ILogger]: With dead ends: 92 [2019-05-23 11:29:51,457 INFO L146 ILogger]: Without dead ends: 86 [2019-05-23 11:29:51,459 INFO L146 ILogger]: 0 DeclaredPredicates, 110 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=316, Invalid=1576, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:29:51,459 INFO L146 ILogger]: Start minimizeSevpa. Operand 86 states. [2019-05-23 11:29:51,464 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 86 to 81. [2019-05-23 11:29:51,464 INFO L146 ILogger]: Start removeUnreachable. Operand 81 states. [2019-05-23 11:29:51,465 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2019-05-23 11:29:51,465 INFO L146 ILogger]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 73 [2019-05-23 11:29:51,465 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:51,465 INFO L146 ILogger]: Abstraction has 81 states and 83 transitions. [2019-05-23 11:29:51,465 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:29:51,465 INFO L146 ILogger]: Start isEmpty. Operand 81 states and 83 transitions. [2019-05-23 11:29:51,466 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 81 [2019-05-23 11:29:51,466 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:51,466 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:29:51,467 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:51,467 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:51,467 INFO L146 ILogger]: Analyzing trace with hash -1481116268, now seen corresponding path program 7 times [2019-05-23 11:29:51,467 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:51,467 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:51,468 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:51,468 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:51,468 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:51,488 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:53,568 INFO L146 ILogger]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:53,568 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:53,568 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 11:29:53,579 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:53,597 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:53,599 INFO L146 ILogger]: Trace formula consists of 132 conjuncts, 65 conjunts are in the unsatisfiable core [2019-05-23 11:29:53,602 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:53,740 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:29:53,740 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:29:53,755 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:29:53,755 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:29:53,756 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:24 [2019-05-23 11:29:55,441 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:29:55,443 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:29:55,443 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 13 [2019-05-23 11:29:55,443 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:29:55,448 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:29:55,448 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:29:55,448 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:7 [2019-05-23 11:29:55,564 INFO L146 ILogger]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:55,583 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:55,583 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 34] total 61 [2019-05-23 11:29:55,584 INFO L146 ILogger]: Interpolant automaton has 61 states [2019-05-23 11:29:55,584 INFO L146 ILogger]: Constructing interpolant automaton starting with 61 interpolants. [2019-05-23 11:29:55,585 INFO L146 ILogger]: CoverageRelationStatistics Valid=250, Invalid=3410, Unknown=0, NotChecked=0, Total=3660 [2019-05-23 11:29:55,586 INFO L146 ILogger]: Start difference. First operand 81 states and 83 transitions. Second operand 61 states. [2019-05-23 11:29:58,097 WARN L146 ILogger]: Spent 136.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 26 [2019-05-23 11:29:59,502 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:59,503 INFO L146 ILogger]: Finished difference Result 124 states and 127 transitions. [2019-05-23 11:29:59,503 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:29:59,503 INFO L146 ILogger]: Start accepts. Automaton has 61 states. Word has length 80 [2019-05-23 11:29:59,504 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:59,505 INFO L146 ILogger]: With dead ends: 124 [2019-05-23 11:29:59,505 INFO L146 ILogger]: Without dead ends: 118 [2019-05-23 11:29:59,508 INFO L146 ILogger]: 0 DeclaredPredicates, 139 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2141 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=433, Invalid=6707, Unknown=0, NotChecked=0, Total=7140 [2019-05-23 11:29:59,508 INFO L146 ILogger]: Start minimizeSevpa. Operand 118 states. [2019-05-23 11:29:59,513 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 118 to 96. [2019-05-23 11:29:59,514 INFO L146 ILogger]: Start removeUnreachable. Operand 96 states. [2019-05-23 11:29:59,514 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 96 states to 96 states and 99 transitions. [2019-05-23 11:29:59,515 INFO L146 ILogger]: Start accepts. Automaton has 96 states and 99 transitions. Word has length 80 [2019-05-23 11:29:59,515 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:59,515 INFO L146 ILogger]: Abstraction has 96 states and 99 transitions. [2019-05-23 11:29:59,515 INFO L146 ILogger]: Interpolant automaton has 61 states. [2019-05-23 11:29:59,515 INFO L146 ILogger]: Start isEmpty. Operand 96 states and 99 transitions. [2019-05-23 11:29:59,516 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 88 [2019-05-23 11:29:59,516 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:59,516 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2019-05-23 11:29:59,517 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:59,517 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:59,517 INFO L146 ILogger]: Analyzing trace with hash 434961003, now seen corresponding path program 8 times [2019-05-23 11:29:59,517 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:59,517 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:59,518 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:59,518 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:59,519 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:59,529 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:59,890 INFO L146 ILogger]: Checked inductivity of 88 backedges. 33 proven. 31 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-05-23 11:29:59,890 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:59,891 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 11:29:59,899 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:29:59,921 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:29:59,921 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:59,922 INFO L146 ILogger]: Trace formula consists of 143 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:29:59,926 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:00,062 INFO L146 ILogger]: Checked inductivity of 88 backedges. 46 proven. 18 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-05-23 11:30:00,080 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:00,080 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 26 [2019-05-23 11:30:00,080 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:30:00,081 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:30:00,081 INFO L146 ILogger]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:30:00,081 INFO L146 ILogger]: Start difference. First operand 96 states and 99 transitions. Second operand 26 states. [2019-05-23 11:30:00,520 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:00,521 INFO L146 ILogger]: Finished difference Result 205 states and 211 transitions. [2019-05-23 11:30:00,521 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-05-23 11:30:00,521 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 87 [2019-05-23 11:30:00,522 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:00,523 INFO L146 ILogger]: With dead ends: 205 [2019-05-23 11:30:00,523 INFO L146 ILogger]: Without dead ends: 169 [2019-05-23 11:30:00,525 INFO L146 ILogger]: 0 DeclaredPredicates, 120 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=288, Invalid=1518, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:30:00,525 INFO L146 ILogger]: Start minimizeSevpa. Operand 169 states. [2019-05-23 11:30:00,534 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 169 to 154. [2019-05-23 11:30:00,534 INFO L146 ILogger]: Start removeUnreachable. Operand 154 states. [2019-05-23 11:30:00,535 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 154 states to 154 states and 159 transitions. [2019-05-23 11:30:00,535 INFO L146 ILogger]: Start accepts. Automaton has 154 states and 159 transitions. Word has length 87 [2019-05-23 11:30:00,535 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:00,535 INFO L146 ILogger]: Abstraction has 154 states and 159 transitions. [2019-05-23 11:30:00,535 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:30:00,536 INFO L146 ILogger]: Start isEmpty. Operand 154 states and 159 transitions. [2019-05-23 11:30:00,536 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 88 [2019-05-23 11:30:00,537 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:00,537 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2019-05-23 11:30:00,537 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:00,537 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:00,537 INFO L146 ILogger]: Analyzing trace with hash 1053817796, now seen corresponding path program 9 times [2019-05-23 11:30:00,537 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:00,538 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:00,538 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:00,539 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:00,539 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:00,547 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:00,708 INFO L146 ILogger]: Checked inductivity of 88 backedges. 33 proven. 31 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-05-23 11:30:00,708 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:00,709 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:00,718 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:30:00,744 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:30:00,744 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:00,745 INFO L146 ILogger]: Trace formula consists of 143 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:30:00,747 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:01,238 INFO L146 ILogger]: Checked inductivity of 88 backedges. 24 proven. 46 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:30:01,258 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:01,258 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2019-05-23 11:30:01,259 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:30:01,259 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:30:01,259 INFO L146 ILogger]: CoverageRelationStatistics Valid=117, Invalid=875, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:30:01,260 INFO L146 ILogger]: Start difference. First operand 154 states and 159 transitions. Second operand 32 states. [2019-05-23 11:30:02,266 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:02,266 INFO L146 ILogger]: Finished difference Result 203 states and 208 transitions. [2019-05-23 11:30:02,267 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2019-05-23 11:30:02,267 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 87 [2019-05-23 11:30:02,267 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:02,268 INFO L146 ILogger]: With dead ends: 203 [2019-05-23 11:30:02,269 INFO L146 ILogger]: Without dead ends: 144 [2019-05-23 11:30:02,271 INFO L146 ILogger]: 0 DeclaredPredicates, 138 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1294 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=520, Invalid=3902, Unknown=0, NotChecked=0, Total=4422 [2019-05-23 11:30:02,272 INFO L146 ILogger]: Start minimizeSevpa. Operand 144 states. [2019-05-23 11:30:02,275 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 144 to 93. [2019-05-23 11:30:02,275 INFO L146 ILogger]: Start removeUnreachable. Operand 93 states. [2019-05-23 11:30:02,275 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 93 states to 93 states and 95 transitions. [2019-05-23 11:30:02,275 INFO L146 ILogger]: Start accepts. Automaton has 93 states and 95 transitions. Word has length 87 [2019-05-23 11:30:02,276 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:02,276 INFO L146 ILogger]: Abstraction has 93 states and 95 transitions. [2019-05-23 11:30:02,276 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:30:02,276 INFO L146 ILogger]: Start isEmpty. Operand 93 states and 95 transitions. [2019-05-23 11:30:02,276 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 93 [2019-05-23 11:30:02,276 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:02,277 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:02,277 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:02,277 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:02,277 INFO L146 ILogger]: Analyzing trace with hash 2069525815, now seen corresponding path program 10 times [2019-05-23 11:30:02,277 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:02,278 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:02,278 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:02,278 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:02,278 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:02,287 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:03,180 INFO L146 ILogger]: Checked inductivity of 104 backedges. 9 proven. 49 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-05-23 11:30:03,180 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:03,180 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:03,190 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:30:03,211 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:30:03,212 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:03,212 INFO L146 ILogger]: Trace formula consists of 148 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:30:03,214 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:04,036 INFO L146 ILogger]: Checked inductivity of 104 backedges. 18 proven. 40 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-05-23 11:30:04,054 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:04,054 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 26 [2019-05-23 11:30:04,055 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:30:04,055 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:30:04,055 INFO L146 ILogger]: CoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:30:04,056 INFO L146 ILogger]: Start difference. First operand 93 states and 95 transitions. Second operand 26 states. [2019-05-23 11:30:04,786 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:04,786 INFO L146 ILogger]: Finished difference Result 141 states and 144 transitions. [2019-05-23 11:30:04,790 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:30:04,790 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 92 [2019-05-23 11:30:04,790 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:04,791 INFO L146 ILogger]: With dead ends: 141 [2019-05-23 11:30:04,791 INFO L146 ILogger]: Without dead ends: 105 [2019-05-23 11:30:04,792 INFO L146 ILogger]: 0 DeclaredPredicates, 129 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=357, Invalid=1805, Unknown=0, NotChecked=0, Total=2162 [2019-05-23 11:30:04,792 INFO L146 ILogger]: Start minimizeSevpa. Operand 105 states. [2019-05-23 11:30:04,796 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 105 to 100. [2019-05-23 11:30:04,797 INFO L146 ILogger]: Start removeUnreachable. Operand 100 states. [2019-05-23 11:30:04,797 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 100 states to 100 states and 102 transitions. [2019-05-23 11:30:04,797 INFO L146 ILogger]: Start accepts. Automaton has 100 states and 102 transitions. Word has length 92 [2019-05-23 11:30:04,798 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:04,798 INFO L146 ILogger]: Abstraction has 100 states and 102 transitions. [2019-05-23 11:30:04,798 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:30:04,798 INFO L146 ILogger]: Start isEmpty. Operand 100 states and 102 transitions. [2019-05-23 11:30:04,799 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 100 [2019-05-23 11:30:04,799 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:04,799 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:30:04,799 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:04,800 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:04,800 INFO L146 ILogger]: Analyzing trace with hash 1239393775, now seen corresponding path program 11 times [2019-05-23 11:30:04,800 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:04,800 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:04,802 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:04,802 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:04,802 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:04,820 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:07,338 INFO L146 ILogger]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:30:07,338 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:07,338 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:07,348 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:30:07,380 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2019-05-23 11:30:07,381 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:07,382 WARN L146 ILogger]: Trace formula consists of 161 conjuncts, 85 conjunts are in the unsatisfiable core [2019-05-23 11:30:07,384 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:07,652 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:30:07,652 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:30:07,660 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:30:07,661 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:30:07,661 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:24 [2019-05-23 11:30:11,143 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:30:11,145 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:30:11,146 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 13 [2019-05-23 11:30:11,154 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:30:11,160 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:30:11,161 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:30:11,161 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:7 [2019-05-23 11:30:11,337 INFO L146 ILogger]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:30:11,357 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:11,358 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 44] total 82 [2019-05-23 11:30:11,358 INFO L146 ILogger]: Interpolant automaton has 82 states [2019-05-23 11:30:11,358 INFO L146 ILogger]: Constructing interpolant automaton starting with 82 interpolants. [2019-05-23 11:30:11,360 INFO L146 ILogger]: CoverageRelationStatistics Valid=335, Invalid=6307, Unknown=0, NotChecked=0, Total=6642 [2019-05-23 11:30:11,360 INFO L146 ILogger]: Start difference. First operand 100 states and 102 transitions. Second operand 82 states. [2019-05-23 11:30:16,802 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:16,803 INFO L146 ILogger]: Finished difference Result 150 states and 153 transitions. [2019-05-23 11:30:16,803 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2019-05-23 11:30:16,803 INFO L146 ILogger]: Start accepts. Automaton has 82 states. Word has length 99 [2019-05-23 11:30:16,803 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:16,804 INFO L146 ILogger]: With dead ends: 150 [2019-05-23 11:30:16,804 INFO L146 ILogger]: Without dead ends: 144 [2019-05-23 11:30:16,809 INFO L146 ILogger]: 0 DeclaredPredicates, 179 GetRequests, 62 SyntacticMatches, 3 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3892 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=595, Invalid=12745, Unknown=0, NotChecked=0, Total=13340 [2019-05-23 11:30:16,810 INFO L146 ILogger]: Start minimizeSevpa. Operand 144 states. [2019-05-23 11:30:16,814 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 144 to 115. [2019-05-23 11:30:16,814 INFO L146 ILogger]: Start removeUnreachable. Operand 115 states. [2019-05-23 11:30:16,815 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 115 states to 115 states and 118 transitions. [2019-05-23 11:30:16,815 INFO L146 ILogger]: Start accepts. Automaton has 115 states and 118 transitions. Word has length 99 [2019-05-23 11:30:16,815 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:16,816 INFO L146 ILogger]: Abstraction has 115 states and 118 transitions. [2019-05-23 11:30:16,816 INFO L146 ILogger]: Interpolant automaton has 82 states. [2019-05-23 11:30:16,816 INFO L146 ILogger]: Start isEmpty. Operand 115 states and 118 transitions. [2019-05-23 11:30:16,817 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 107 [2019-05-23 11:30:16,817 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:16,817 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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] [2019-05-23 11:30:16,817 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:16,817 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:16,818 INFO L146 ILogger]: Analyzing trace with hash -909492816, now seen corresponding path program 12 times [2019-05-23 11:30:16,818 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:16,818 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:16,818 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:16,819 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:16,819 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:16,828 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:17,077 INFO L146 ILogger]: Checked inductivity of 155 backedges. 56 proven. 53 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-05-23 11:30:17,078 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:17,078 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:17,091 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:30:17,143 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2019-05-23 11:30:17,144 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:17,144 INFO L146 ILogger]: Trace formula consists of 172 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:30:17,146 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:17,614 INFO L146 ILogger]: Checked inductivity of 155 backedges. 75 proven. 46 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-05-23 11:30:17,634 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:17,634 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 35 [2019-05-23 11:30:17,635 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:30:17,635 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:30:17,636 INFO L146 ILogger]: CoverageRelationStatistics Valid=154, Invalid=1036, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:30:17,636 INFO L146 ILogger]: Start difference. First operand 115 states and 118 transitions. Second operand 35 states. [2019-05-23 11:30:18,655 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:18,656 INFO L146 ILogger]: Finished difference Result 236 states and 242 transitions. [2019-05-23 11:30:18,656 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2019-05-23 11:30:18,656 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 106 [2019-05-23 11:30:18,657 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:18,658 INFO L146 ILogger]: With dead ends: 236 [2019-05-23 11:30:18,658 INFO L146 ILogger]: Without dead ends: 193 [2019-05-23 11:30:18,659 INFO L146 ILogger]: 0 DeclaredPredicates, 167 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1651 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=717, Invalid=4833, Unknown=0, NotChecked=0, Total=5550 [2019-05-23 11:30:18,660 INFO L146 ILogger]: Start minimizeSevpa. Operand 193 states. [2019-05-23 11:30:18,667 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 193 to 179. [2019-05-23 11:30:18,667 INFO L146 ILogger]: Start removeUnreachable. Operand 179 states. [2019-05-23 11:30:18,668 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 179 states to 179 states and 183 transitions. [2019-05-23 11:30:18,668 INFO L146 ILogger]: Start accepts. Automaton has 179 states and 183 transitions. Word has length 106 [2019-05-23 11:30:18,668 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:18,668 INFO L146 ILogger]: Abstraction has 179 states and 183 transitions. [2019-05-23 11:30:18,668 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:30:18,669 INFO L146 ILogger]: Start isEmpty. Operand 179 states and 183 transitions. [2019-05-23 11:30:18,669 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 107 [2019-05-23 11:30:18,669 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:18,670 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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] [2019-05-23 11:30:18,670 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:18,670 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:18,670 INFO L146 ILogger]: Analyzing trace with hash -302205385, now seen corresponding path program 13 times [2019-05-23 11:30:18,670 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:18,670 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:18,671 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:18,671 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:18,671 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:18,680 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:18,937 INFO L146 ILogger]: Checked inductivity of 155 backedges. 56 proven. 53 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-05-23 11:30:18,937 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:18,937 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:18,945 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:18,972 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:18,973 INFO L146 ILogger]: Trace formula consists of 172 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:30:18,975 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:19,170 INFO L146 ILogger]: Checked inductivity of 155 backedges. 75 proven. 34 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-05-23 11:30:19,189 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:19,189 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 32 [2019-05-23 11:30:19,189 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:30:19,190 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:30:19,190 INFO L146 ILogger]: CoverageRelationStatistics Valid=146, Invalid=846, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:30:19,190 INFO L146 ILogger]: Start difference. First operand 179 states and 183 transitions. Second operand 32 states. [2019-05-23 11:30:20,086 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:20,087 INFO L146 ILogger]: Finished difference Result 188 states and 191 transitions. [2019-05-23 11:30:20,087 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:30:20,087 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 106 [2019-05-23 11:30:20,088 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:20,088 INFO L146 ILogger]: With dead ends: 188 [2019-05-23 11:30:20,089 INFO L146 ILogger]: Without dead ends: 115 [2019-05-23 11:30:20,091 INFO L146 ILogger]: 0 DeclaredPredicates, 146 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=407, Invalid=2245, Unknown=0, NotChecked=0, Total=2652 [2019-05-23 11:30:20,092 INFO L146 ILogger]: Start minimizeSevpa. Operand 115 states. [2019-05-23 11:30:20,096 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 115 to 112. [2019-05-23 11:30:20,096 INFO L146 ILogger]: Start removeUnreachable. Operand 112 states. [2019-05-23 11:30:20,096 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 112 states to 112 states and 114 transitions. [2019-05-23 11:30:20,097 INFO L146 ILogger]: Start accepts. Automaton has 112 states and 114 transitions. Word has length 106 [2019-05-23 11:30:20,097 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:20,097 INFO L146 ILogger]: Abstraction has 112 states and 114 transitions. [2019-05-23 11:30:20,097 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:30:20,097 INFO L146 ILogger]: Start isEmpty. Operand 112 states and 114 transitions. [2019-05-23 11:30:20,098 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 112 [2019-05-23 11:30:20,098 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:20,098 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2019-05-23 11:30:20,098 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:20,099 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:20,099 INFO L146 ILogger]: Analyzing trace with hash -393228309, now seen corresponding path program 14 times [2019-05-23 11:30:20,099 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:20,099 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:20,100 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:20,100 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:20,100 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:20,109 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:20,330 INFO L146 ILogger]: Checked inductivity of 176 backedges. 21 proven. 80 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-05-23 11:30:20,330 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:20,330 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:20,338 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:30:20,364 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:30:20,365 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:20,366 INFO L146 ILogger]: Trace formula consists of 179 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:30:20,368 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:20,640 INFO L146 ILogger]: Checked inductivity of 176 backedges. 34 proven. 67 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-05-23 11:30:20,658 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:20,658 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 32 [2019-05-23 11:30:20,659 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:30:20,659 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:30:20,659 INFO L146 ILogger]: CoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:30:20,660 INFO L146 ILogger]: Start difference. First operand 112 states and 114 transitions. Second operand 32 states. [2019-05-23 11:30:21,347 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:21,347 INFO L146 ILogger]: Finished difference Result 130 states and 132 transitions. [2019-05-23 11:30:21,347 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-05-23 11:30:21,348 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 111 [2019-05-23 11:30:21,348 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:21,349 INFO L146 ILogger]: With dead ends: 130 [2019-05-23 11:30:21,349 INFO L146 ILogger]: Without dead ends: 124 [2019-05-23 11:30:21,350 INFO L146 ILogger]: 0 DeclaredPredicates, 157 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=512, Invalid=2794, Unknown=0, NotChecked=0, Total=3306 [2019-05-23 11:30:21,350 INFO L146 ILogger]: Start minimizeSevpa. Operand 124 states. [2019-05-23 11:30:21,355 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 124 to 119. [2019-05-23 11:30:21,356 INFO L146 ILogger]: Start removeUnreachable. Operand 119 states. [2019-05-23 11:30:21,356 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2019-05-23 11:30:21,356 INFO L146 ILogger]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 111 [2019-05-23 11:30:21,357 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:21,357 INFO L146 ILogger]: Abstraction has 119 states and 121 transitions. [2019-05-23 11:30:21,357 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:30:21,357 INFO L146 ILogger]: Start isEmpty. Operand 119 states and 121 transitions. [2019-05-23 11:30:21,358 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 119 [2019-05-23 11:30:21,358 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:21,358 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:30:21,358 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:21,358 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:21,358 INFO L146 ILogger]: Analyzing trace with hash -1762516940, now seen corresponding path program 15 times [2019-05-23 11:30:21,358 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:21,359 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:21,359 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:21,359 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:21,359 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:21,378 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:25,289 INFO L146 ILogger]: Checked inductivity of 205 backedges. 0 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:30:25,289 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:25,289 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:25,300 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:30:25,341 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-05-23 11:30:25,341 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:25,343 WARN L146 ILogger]: Trace formula consists of 190 conjuncts, 102 conjunts are in the unsatisfiable core [2019-05-23 11:30:25,346 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:29,381 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:30:29,384 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:30:29,386 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:30:29,387 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:30:29,388 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:30:29,389 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:30:29,391 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:30:29,398 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:30:29,399 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:30:29,401 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:30:29,437 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:30:29,438 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:30:29,485 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:30:29,486 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 18 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 61 treesize of output 127 [2019-05-23 11:30:34,776 INFO L146 ILogger]: Start of recursive call 2: 10 dim-0 vars, End of recursive call: 10 dim-0 vars, and 7 xjuncts. [2019-05-23 11:30:34,944 WARN L146 ILogger]: Spent 167.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 21 [2019-05-23 11:30:34,945 INFO L146 ILogger]: treesize reduction 1043, result has 2.4 percent of original size [2019-05-23 11:30:34,945 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:30:34,945 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:70, output treesize:26 [2019-05-23 11:30:35,544 INFO L146 ILogger]: Checked inductivity of 205 backedges. 21 proven. 150 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-05-23 11:30:35,563 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:35,563 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 53] total 105 [2019-05-23 11:30:35,564 INFO L146 ILogger]: Interpolant automaton has 105 states [2019-05-23 11:30:35,564 INFO L146 ILogger]: Constructing interpolant automaton starting with 105 interpolants. [2019-05-23 11:30:35,565 INFO L146 ILogger]: CoverageRelationStatistics Valid=396, Invalid=10524, Unknown=0, NotChecked=0, Total=10920 [2019-05-23 11:30:35,565 INFO L146 ILogger]: Start difference. First operand 119 states and 121 transitions. Second operand 105 states.