java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/reducercommutativity/rangesum20_false-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-5f7ec6e-m [2018-01-31 08:59:14,088 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-31 08:59:14,089 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-31 08:59:14,097 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-31 08:59:14,097 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-31 08:59:14,098 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-31 08:59:14,099 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-31 08:59:14,100 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-31 08:59:14,101 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-31 08:59:14,101 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-31 08:59:14,102 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-31 08:59:14,102 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-31 08:59:14,102 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-31 08:59:14,103 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-31 08:59:14,104 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-31 08:59:14,105 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-31 08:59:14,106 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-31 08:59:14,107 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-31 08:59:14,108 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-31 08:59:14,108 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-31 08:59:14,110 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-31 08:59:14,110 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-31 08:59:14,110 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-31 08:59:14,110 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-31 08:59:14,111 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-31 08:59:14,111 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-31 08:59:14,112 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-31 08:59:14,112 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-31 08:59:14,112 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-31 08:59:14,112 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-31 08:59:14,113 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-31 08:59:14,113 INFO L98 SettingsManager]: Beginning loading settings from /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf [2018-01-31 08:59:14,118 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-31 08:59:14,118 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-31 08:59:14,118 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-31 08:59:14,118 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-31 08:59:14,119 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-31 08:59:14,119 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-31 08:59:14,119 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-31 08:59:14,119 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-31 08:59:14,119 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-31 08:59:14,119 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-31 08:59:14,119 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-31 08:59:14,120 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-31 08:59:14,120 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-31 08:59:14,120 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-31 08:59:14,120 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-31 08:59:14,120 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-31 08:59:14,120 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-31 08:59:14,120 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-31 08:59:14,120 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-31 08:59:14,121 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-31 08:59:14,121 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-31 08:59:14,121 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-31 08:59:14,121 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-31 08:59:14,121 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 08:59:14,121 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-31 08:59:14,121 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-31 08:59:14,121 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-31 08:59:14,121 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-31 08:59:14,122 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-31 08:59:14,122 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-31 08:59:14,122 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-31 08:59:14,122 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-31 08:59:14,122 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-31 08:59:14,122 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-31 08:59:14,140 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-31 08:59:14,147 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-31 08:59:14,149 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-31 08:59:14,149 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-31 08:59:14,150 INFO L276 PluginConnector]: CDTParser initialized [2018-01-31 08:59:14,150 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/rangesum20_false-unreach-call.i [2018-01-31 08:59:14,218 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-31 08:59:14,218 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-31 08:59:14,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-31 08:59:14,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-31 08:59:14,223 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-31 08:59:14,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:59:14" (1/1) ... [2018-01-31 08:59:14,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21df2624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:59:14, skipping insertion in model container [2018-01-31 08:59:14,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:59:14" (1/1) ... [2018-01-31 08:59:14,234 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 08:59:14,243 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 08:59:14,336 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 08:59:14,350 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 08:59:14,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:59:14 WrapperNode [2018-01-31 08:59:14,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-31 08:59:14,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-31 08:59:14,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-31 08:59:14,354 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-31 08:59:14,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:59:14" (1/1) ... [2018-01-31 08:59:14,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:59:14" (1/1) ... [2018-01-31 08:59:14,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:59:14" (1/1) ... [2018-01-31 08:59:14,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:59:14" (1/1) ... [2018-01-31 08:59:14,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:59:14" (1/1) ... [2018-01-31 08:59:14,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:59:14" (1/1) ... [2018-01-31 08:59:14,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:59:14" (1/1) ... [2018-01-31 08:59:14,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-31 08:59:14,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-31 08:59:14,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-31 08:59:14,375 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-31 08:59:14,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:59:14" (1/1) ... No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 08:59:14,415 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-31 08:59:14,415 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-31 08:59:14,415 INFO L136 BoogieDeclarations]: Found implementation of procedure init_nondet [2018-01-31 08:59:14,415 INFO L136 BoogieDeclarations]: Found implementation of procedure rangesum [2018-01-31 08:59:14,415 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-31 08:59:14,415 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-31 08:59:14,415 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-31 08:59:14,416 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-31 08:59:14,416 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-31 08:59:14,416 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-31 08:59:14,416 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-31 08:59:14,416 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-31 08:59:14,416 INFO L128 BoogieDeclarations]: Found specification of procedure init_nondet [2018-01-31 08:59:14,416 INFO L128 BoogieDeclarations]: Found specification of procedure rangesum [2018-01-31 08:59:14,416 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-31 08:59:14,416 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-31 08:59:14,416 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-31 08:59:14,780 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-31 08:59:14,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:59:14 BoogieIcfgContainer [2018-01-31 08:59:14,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-31 08:59:14,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-31 08:59:14,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-31 08:59:14,783 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-31 08:59:14,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 08:59:14" (1/3) ... [2018-01-31 08:59:14,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cd4365a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:59:14, skipping insertion in model container [2018-01-31 08:59:14,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:59:14" (2/3) ... [2018-01-31 08:59:14,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cd4365a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:59:14, skipping insertion in model container [2018-01-31 08:59:14,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:59:14" (3/3) ... [2018-01-31 08:59:14,785 INFO L107 eAbstractionObserver]: Analyzing ICFG rangesum20_false-unreach-call.i [2018-01-31 08:59:14,790 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-31 08:59:14,798 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-31 08:59:14,824 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-31 08:59:14,824 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-31 08:59:14,824 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-31 08:59:14,824 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-31 08:59:14,824 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-31 08:59:14,824 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-31 08:59:14,824 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-31 08:59:14,824 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-31 08:59:14,825 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-31 08:59:14,838 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2018-01-31 08:59:14,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-01-31 08:59:14,843 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:59:14,844 INFO L351 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:59:14,844 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0AssertViolation]=== [2018-01-31 08:59:14,847 INFO L82 PathProgramCache]: Analyzing trace with hash 540696337, now seen corresponding path program 1 times [2018-01-31 08:59:14,848 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:59:14,848 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:59:14,878 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:14,878 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:59:14,879 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:59:14,910 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:59:14,932 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-01-31 08:59:14,932 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:59:14,932 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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) [2018-01-31 08:59:14,949 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:59:15,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:59:15,023 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:59:15,055 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-01-31 08:59:15,073 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 08:59:15,073 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-31 08:59:15,076 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-31 08:59:15,083 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-31 08:59:15,083 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-31 08:59:15,085 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 2 states. [2018-01-31 08:59:15,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:59:15,104 INFO L93 Difference]: Finished difference Result 157 states and 178 transitions. [2018-01-31 08:59:15,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-31 08:59:15,106 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 78 [2018-01-31 08:59:15,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:59:15,112 INFO L225 Difference]: With dead ends: 157 [2018-01-31 08:59:15,112 INFO L226 Difference]: Without dead ends: 81 [2018-01-31 08:59:15,115 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-31 08:59:15,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-01-31 08:59:15,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-01-31 08:59:15,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-01-31 08:59:15,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2018-01-31 08:59:15,209 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 78 [2018-01-31 08:59:15,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:59:15,210 INFO L432 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2018-01-31 08:59:15,210 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-31 08:59:15,210 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2018-01-31 08:59:15,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-01-31 08:59:15,212 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:59:15,212 INFO L351 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:59:15,212 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0AssertViolation]=== [2018-01-31 08:59:15,213 INFO L82 PathProgramCache]: Analyzing trace with hash -199678615, now seen corresponding path program 1 times [2018-01-31 08:59:15,213 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:59:15,213 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:59:15,214 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:15,214 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:59:15,214 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:59:15,226 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:59:15,275 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-01-31 08:59:15,275 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:59:15,275 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:59:15,281 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:59:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:59:15,313 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:59:15,372 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-01-31 08:59:15,389 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 08:59:15,389 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-31 08:59:15,390 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-31 08:59:15,390 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-31 08:59:15,390 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 08:59:15,390 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand 3 states. [2018-01-31 08:59:15,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:59:15,467 INFO L93 Difference]: Finished difference Result 150 states and 162 transitions. [2018-01-31 08:59:15,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-31 08:59:15,468 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2018-01-31 08:59:15,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:59:15,469 INFO L225 Difference]: With dead ends: 150 [2018-01-31 08:59:15,469 INFO L226 Difference]: Without dead ends: 88 [2018-01-31 08:59:15,470 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 08:59:15,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-01-31 08:59:15,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 83. [2018-01-31 08:59:15,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-01-31 08:59:15,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2018-01-31 08:59:15,475 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 83 [2018-01-31 08:59:15,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:59:15,476 INFO L432 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2018-01-31 08:59:15,476 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-31 08:59:15,476 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2018-01-31 08:59:15,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-01-31 08:59:15,477 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:59:15,477 INFO L351 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:59:15,477 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0AssertViolation]=== [2018-01-31 08:59:15,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1465441618, now seen corresponding path program 1 times [2018-01-31 08:59:15,478 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:59:15,478 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:59:15,479 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:15,479 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:59:15,479 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:15,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:59:15,489 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:59:15,518 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-01-31 08:59:15,518 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:59:15,518 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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) [2018-01-31 08:59:15,531 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:59:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:59:15,563 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:59:15,612 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-01-31 08:59:15,629 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 08:59:15,629 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-31 08:59:15,629 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-31 08:59:15,629 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-31 08:59:15,630 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 08:59:15,630 INFO L87 Difference]: Start difference. First operand 83 states and 89 transitions. Second operand 3 states. [2018-01-31 08:59:15,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:59:15,693 INFO L93 Difference]: Finished difference Result 151 states and 169 transitions. [2018-01-31 08:59:15,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-31 08:59:15,693 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2018-01-31 08:59:15,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:59:15,695 INFO L225 Difference]: With dead ends: 151 [2018-01-31 08:59:15,695 INFO L226 Difference]: Without dead ends: 96 [2018-01-31 08:59:15,696 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 08:59:15,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-01-31 08:59:15,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2018-01-31 08:59:15,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-01-31 08:59:15,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 98 transitions. [2018-01-31 08:59:15,701 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 98 transitions. Word has length 91 [2018-01-31 08:59:15,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:59:15,702 INFO L432 AbstractCegarLoop]: Abstraction has 90 states and 98 transitions. [2018-01-31 08:59:15,702 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-31 08:59:15,702 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 98 transitions. [2018-01-31 08:59:15,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-01-31 08:59:15,703 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:59:15,703 INFO L351 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:59:15,703 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0AssertViolation]=== [2018-01-31 08:59:15,703 INFO L82 PathProgramCache]: Analyzing trace with hash 280349970, now seen corresponding path program 1 times [2018-01-31 08:59:15,704 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:59:15,704 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:59:15,704 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:15,704 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:59:15,704 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:59:15,712 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:59:15,849 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-01-31 08:59:15,849 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:59:15,849 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:59:15,858 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:59:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:59:15,889 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:59:15,927 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-01-31 08:59:15,943 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:59:15,943 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-31 08:59:15,944 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 08:59:15,944 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 08:59:15,944 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-31 08:59:15,944 INFO L87 Difference]: Start difference. First operand 90 states and 98 transitions. Second operand 6 states. [2018-01-31 08:59:16,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:59:16,095 INFO L93 Difference]: Finished difference Result 177 states and 198 transitions. [2018-01-31 08:59:16,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 08:59:16,095 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 91 [2018-01-31 08:59:16,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:59:16,096 INFO L225 Difference]: With dead ends: 177 [2018-01-31 08:59:16,096 INFO L226 Difference]: Without dead ends: 108 [2018-01-31 08:59:16,096 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-31 08:59:16,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-01-31 08:59:16,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 101. [2018-01-31 08:59:16,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-01-31 08:59:16,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2018-01-31 08:59:16,102 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 91 [2018-01-31 08:59:16,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:59:16,102 INFO L432 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2018-01-31 08:59:16,102 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 08:59:16,102 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2018-01-31 08:59:16,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-01-31 08:59:16,103 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:59:16,103 INFO L351 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:59:16,103 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0AssertViolation]=== [2018-01-31 08:59:16,103 INFO L82 PathProgramCache]: Analyzing trace with hash -253115437, now seen corresponding path program 1 times [2018-01-31 08:59:16,104 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:59:16,104 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:59:16,104 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:16,104 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:59:16,104 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:16,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:59:16,113 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:59:16,182 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-01-31 08:59:16,182 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:59:16,182 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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) [2018-01-31 08:59:16,194 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:59:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:59:16,223 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:59:16,289 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-01-31 08:59:16,306 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:59:16,306 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-31 08:59:16,306 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 08:59:16,306 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 08:59:16,307 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-31 08:59:16,307 INFO L87 Difference]: Start difference. First operand 101 states and 109 transitions. Second operand 6 states. [2018-01-31 08:59:16,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:59:16,606 INFO L93 Difference]: Finished difference Result 181 states and 201 transitions. [2018-01-31 08:59:16,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 08:59:16,607 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2018-01-31 08:59:16,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:59:16,607 INFO L225 Difference]: With dead ends: 181 [2018-01-31 08:59:16,607 INFO L226 Difference]: Without dead ends: 116 [2018-01-31 08:59:16,611 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-31 08:59:16,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-01-31 08:59:16,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 109. [2018-01-31 08:59:16,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-01-31 08:59:16,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 117 transitions. [2018-01-31 08:59:16,615 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 117 transitions. Word has length 117 [2018-01-31 08:59:16,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:59:16,615 INFO L432 AbstractCegarLoop]: Abstraction has 109 states and 117 transitions. [2018-01-31 08:59:16,615 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 08:59:16,615 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 117 transitions. [2018-01-31 08:59:16,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-01-31 08:59:16,616 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:59:16,616 INFO L351 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:59:16,616 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0AssertViolation]=== [2018-01-31 08:59:16,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1180114590, now seen corresponding path program 1 times [2018-01-31 08:59:16,617 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:59:16,617 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:59:16,617 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:16,617 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:59:16,617 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:16,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:59:16,629 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:59:16,741 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2018-01-31 08:59:16,741 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:59:16,741 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:59:16,750 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:59:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:59:16,793 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:59:16,882 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2018-01-31 08:59:16,898 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:59:16,899 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2018-01-31 08:59:16,899 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-31 08:59:16,899 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-31 08:59:16,899 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-01-31 08:59:16,899 INFO L87 Difference]: Start difference. First operand 109 states and 117 transitions. Second operand 10 states. [2018-01-31 08:59:17,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:59:17,159 INFO L93 Difference]: Finished difference Result 215 states and 232 transitions. [2018-01-31 08:59:17,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-31 08:59:17,159 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 143 [2018-01-31 08:59:17,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:59:17,160 INFO L225 Difference]: With dead ends: 215 [2018-01-31 08:59:17,160 INFO L226 Difference]: Without dead ends: 135 [2018-01-31 08:59:17,161 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-01-31 08:59:17,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-01-31 08:59:17,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 125. [2018-01-31 08:59:17,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-01-31 08:59:17,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 133 transitions. [2018-01-31 08:59:17,165 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 133 transitions. Word has length 143 [2018-01-31 08:59:17,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:59:17,165 INFO L432 AbstractCegarLoop]: Abstraction has 125 states and 133 transitions. [2018-01-31 08:59:17,165 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-31 08:59:17,166 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 133 transitions. [2018-01-31 08:59:17,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-01-31 08:59:17,166 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:59:17,167 INFO L351 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:59:17,167 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0AssertViolation]=== [2018-01-31 08:59:17,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1412228734, now seen corresponding path program 2 times [2018-01-31 08:59:17,167 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:59:17,167 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:59:17,168 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:17,168 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:59:17,168 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:59:17,182 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:59:17,384 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2018-01-31 08:59:17,384 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 08:59:17,385 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-31 08:59:17,385 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-31 08:59:17,385 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-31 08:59:17,385 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-31 08:59:17,385 INFO L87 Difference]: Start difference. First operand 125 states and 133 transitions. Second operand 9 states. [2018-01-31 08:59:17,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:59:17,517 INFO L93 Difference]: Finished difference Result 210 states and 225 transitions. [2018-01-31 08:59:17,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-31 08:59:17,517 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 159 [2018-01-31 08:59:17,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:59:17,519 INFO L225 Difference]: With dead ends: 210 [2018-01-31 08:59:17,519 INFO L226 Difference]: Without dead ends: 204 [2018-01-31 08:59:17,519 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-01-31 08:59:17,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-01-31 08:59:17,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 165. [2018-01-31 08:59:17,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-01-31 08:59:17,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 179 transitions. [2018-01-31 08:59:17,526 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 179 transitions. Word has length 159 [2018-01-31 08:59:17,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:59:17,526 INFO L432 AbstractCegarLoop]: Abstraction has 165 states and 179 transitions. [2018-01-31 08:59:17,526 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-31 08:59:17,526 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 179 transitions. [2018-01-31 08:59:17,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-01-31 08:59:17,528 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:59:17,528 INFO L351 BasicCegarLoop]: trace histogram [10, 7, 7, 7, 7, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:59:17,528 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0AssertViolation]=== [2018-01-31 08:59:17,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1308538474, now seen corresponding path program 1 times [2018-01-31 08:59:17,528 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:59:17,528 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:59:17,529 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:17,529 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:59:17,529 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:17,536 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:59:17,536 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:59:17,536 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:59:17,550 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:59:17,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:59:17,575 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:59:17,629 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2018-01-31 08:59:17,645 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:59:17,646 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-01-31 08:59:17,646 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-31 08:59:17,646 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-31 08:59:17,646 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-31 08:59:17,646 INFO L87 Difference]: Start difference. First operand 165 states and 179 transitions. Second operand 9 states. [2018-01-31 08:59:17,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:59:17,747 INFO L93 Difference]: Finished difference Result 306 states and 334 transitions. [2018-01-31 08:59:17,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-31 08:59:17,749 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 169 [2018-01-31 08:59:17,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:59:17,749 INFO L225 Difference]: With dead ends: 306 [2018-01-31 08:59:17,749 INFO L226 Difference]: Without dead ends: 178 [2018-01-31 08:59:17,750 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2018-01-31 08:59:17,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-01-31 08:59:17,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 173. [2018-01-31 08:59:17,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-01-31 08:59:17,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 187 transitions. [2018-01-31 08:59:17,755 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 187 transitions. Word has length 169 [2018-01-31 08:59:17,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:59:17,755 INFO L432 AbstractCegarLoop]: Abstraction has 173 states and 187 transitions. [2018-01-31 08:59:17,755 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-31 08:59:17,755 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 187 transitions. [2018-01-31 08:59:17,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-01-31 08:59:17,757 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:59:17,757 INFO L351 BasicCegarLoop]: trace histogram [10, 7, 7, 7, 7, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:59:17,757 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr0AssertViolation]=== [2018-01-31 08:59:17,757 INFO L82 PathProgramCache]: Analyzing trace with hash 977564863, now seen corresponding path program 2 times [2018-01-31 08:59:17,757 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:59:17,757 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:59:17,758 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:17,758 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:59:17,758 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:17,764 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:59:17,764 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:59:17,764 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:59:17,778 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 08:59:17,789 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:17,799 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:17,801 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:59:17,803 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:59:17,845 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2018-01-31 08:59:17,861 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:59:17,862 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-01-31 08:59:17,862 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-31 08:59:17,862 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-31 08:59:17,862 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-01-31 08:59:17,862 INFO L87 Difference]: Start difference. First operand 173 states and 187 transitions. Second operand 11 states. [2018-01-31 08:59:17,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:59:17,947 INFO L93 Difference]: Finished difference Result 314 states and 342 transitions. [2018-01-31 08:59:17,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-31 08:59:17,947 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 177 [2018-01-31 08:59:17,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:59:17,948 INFO L225 Difference]: With dead ends: 314 [2018-01-31 08:59:17,948 INFO L226 Difference]: Without dead ends: 186 [2018-01-31 08:59:17,950 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=123, Invalid=219, Unknown=0, NotChecked=0, Total=342 [2018-01-31 08:59:17,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-01-31 08:59:17,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 181. [2018-01-31 08:59:17,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-01-31 08:59:17,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 195 transitions. [2018-01-31 08:59:17,955 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 195 transitions. Word has length 177 [2018-01-31 08:59:17,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:59:17,956 INFO L432 AbstractCegarLoop]: Abstraction has 181 states and 195 transitions. [2018-01-31 08:59:17,956 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-31 08:59:17,956 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 195 transitions. [2018-01-31 08:59:17,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-01-31 08:59:17,958 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:59:17,958 INFO L351 BasicCegarLoop]: trace histogram [10, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:59:17,958 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr0AssertViolation]=== [2018-01-31 08:59:17,959 INFO L82 PathProgramCache]: Analyzing trace with hash 220358376, now seen corresponding path program 3 times [2018-01-31 08:59:17,959 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:59:17,959 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:59:17,959 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:17,959 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:59:17,959 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:17,971 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:59:17,971 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:59:17,971 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:59:17,977 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:59:17,986 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:59:17,990 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:59:17,991 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:59:17,992 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:59:18,016 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2018-01-31 08:59:18,032 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 08:59:18,032 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-31 08:59:18,033 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-31 08:59:18,033 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-31 08:59:18,033 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-01-31 08:59:18,033 INFO L87 Difference]: Start difference. First operand 181 states and 195 transitions. Second operand 5 states. [2018-01-31 08:59:18,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:59:18,058 INFO L93 Difference]: Finished difference Result 313 states and 349 transitions. [2018-01-31 08:59:18,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-31 08:59:18,058 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2018-01-31 08:59:18,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:59:18,059 INFO L225 Difference]: With dead ends: 313 [2018-01-31 08:59:18,059 INFO L226 Difference]: Without dead ends: 192 [2018-01-31 08:59:18,059 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-01-31 08:59:18,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-01-31 08:59:18,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 179. [2018-01-31 08:59:18,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-01-31 08:59:18,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 191 transitions. [2018-01-31 08:59:18,064 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 191 transitions. Word has length 185 [2018-01-31 08:59:18,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:59:18,064 INFO L432 AbstractCegarLoop]: Abstraction has 179 states and 191 transitions. [2018-01-31 08:59:18,065 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-31 08:59:18,065 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 191 transitions. [2018-01-31 08:59:18,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-01-31 08:59:18,066 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:59:18,066 INFO L351 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 9, 6, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:59:18,066 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr0AssertViolation]=== [2018-01-31 08:59:18,066 INFO L82 PathProgramCache]: Analyzing trace with hash -908536472, now seen corresponding path program 1 times [2018-01-31 08:59:18,066 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:59:18,066 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:59:18,067 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:18,067 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:59:18,067 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:18,072 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:59:18,073 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:59:18,073 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:59:18,112 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:59:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:59:18,142 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:59:18,302 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2018-01-31 08:59:18,327 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:59:18,327 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-01-31 08:59:18,327 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-31 08:59:18,327 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-31 08:59:18,328 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-31 08:59:18,328 INFO L87 Difference]: Start difference. First operand 179 states and 191 transitions. Second operand 13 states. [2018-01-31 08:59:18,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:59:18,508 INFO L93 Difference]: Finished difference Result 318 states and 342 transitions. [2018-01-31 08:59:18,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-31 08:59:18,519 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 205 [2018-01-31 08:59:18,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:59:18,520 INFO L225 Difference]: With dead ends: 318 [2018-01-31 08:59:18,520 INFO L226 Difference]: Without dead ends: 192 [2018-01-31 08:59:18,520 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=178, Invalid=328, Unknown=0, NotChecked=0, Total=506 [2018-01-31 08:59:18,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-01-31 08:59:18,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 187. [2018-01-31 08:59:18,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-01-31 08:59:18,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 199 transitions. [2018-01-31 08:59:18,525 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 199 transitions. Word has length 205 [2018-01-31 08:59:18,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:59:18,525 INFO L432 AbstractCegarLoop]: Abstraction has 187 states and 199 transitions. [2018-01-31 08:59:18,525 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-31 08:59:18,525 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 199 transitions. [2018-01-31 08:59:18,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-01-31 08:59:18,526 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:59:18,526 INFO L351 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 9, 7, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:59:18,526 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr0AssertViolation]=== [2018-01-31 08:59:18,526 INFO L82 PathProgramCache]: Analyzing trace with hash 50552849, now seen corresponding path program 2 times [2018-01-31 08:59:18,527 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:59:18,527 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:59:18,527 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:18,527 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:59:18,527 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:18,534 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:59:18,534 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:59:18,534 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-31 08:59:18,539 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:59:18,549 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:18,563 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:18,565 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:59:18,567 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:59:19,019 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2018-01-31 08:59:19,037 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:59:19,037 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-01-31 08:59:19,038 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-31 08:59:19,038 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-31 08:59:19,038 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-01-31 08:59:19,038 INFO L87 Difference]: Start difference. First operand 187 states and 199 transitions. Second operand 15 states. [2018-01-31 08:59:19,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:59:19,190 INFO L93 Difference]: Finished difference Result 326 states and 350 transitions. [2018-01-31 08:59:19,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-31 08:59:19,191 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 213 [2018-01-31 08:59:19,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:59:19,192 INFO L225 Difference]: With dead ends: 326 [2018-01-31 08:59:19,192 INFO L226 Difference]: Without dead ends: 200 [2018-01-31 08:59:19,192 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=243, Invalid=459, Unknown=0, NotChecked=0, Total=702 [2018-01-31 08:59:19,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-01-31 08:59:19,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 195. [2018-01-31 08:59:19,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-01-31 08:59:19,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 207 transitions. [2018-01-31 08:59:19,197 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 207 transitions. Word has length 213 [2018-01-31 08:59:19,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:59:19,197 INFO L432 AbstractCegarLoop]: Abstraction has 195 states and 207 transitions. [2018-01-31 08:59:19,197 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-31 08:59:19,197 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 207 transitions. [2018-01-31 08:59:19,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-01-31 08:59:19,198 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:59:19,199 INFO L351 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:59:19,199 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr0AssertViolation]=== [2018-01-31 08:59:19,199 INFO L82 PathProgramCache]: Analyzing trace with hash 925970874, now seen corresponding path program 3 times [2018-01-31 08:59:19,199 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:59:19,199 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:59:19,199 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:19,199 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:59:19,199 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:19,205 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:59:19,206 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:59:19,206 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:59:19,222 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:59:19,232 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:59:19,236 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:59:19,243 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:59:19,245 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:59:19,246 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:59:19,334 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 106 proven. 5 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2018-01-31 08:59:19,350 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:59:19,350 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-01-31 08:59:19,351 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-31 08:59:19,351 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-31 08:59:19,351 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-01-31 08:59:19,351 INFO L87 Difference]: Start difference. First operand 195 states and 207 transitions. Second operand 7 states. [2018-01-31 08:59:19,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:59:19,407 INFO L93 Difference]: Finished difference Result 331 states and 364 transitions. [2018-01-31 08:59:19,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-31 08:59:19,408 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 221 [2018-01-31 08:59:19,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:59:19,409 INFO L225 Difference]: With dead ends: 331 [2018-01-31 08:59:19,409 INFO L226 Difference]: Without dead ends: 212 [2018-01-31 08:59:19,410 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2018-01-31 08:59:19,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-01-31 08:59:19,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 205. [2018-01-31 08:59:19,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-01-31 08:59:19,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 218 transitions. [2018-01-31 08:59:19,415 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 218 transitions. Word has length 221 [2018-01-31 08:59:19,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:59:19,415 INFO L432 AbstractCegarLoop]: Abstraction has 205 states and 218 transitions. [2018-01-31 08:59:19,415 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-31 08:59:19,415 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 218 transitions. [2018-01-31 08:59:19,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-01-31 08:59:19,416 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:59:19,416 INFO L351 BasicCegarLoop]: trace histogram [15, 12, 12, 12, 12, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:59:19,416 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr0AssertViolation]=== [2018-01-31 08:59:19,416 INFO L82 PathProgramCache]: Analyzing trace with hash -451765490, now seen corresponding path program 4 times [2018-01-31 08:59:19,416 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:59:19,416 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:59:19,417 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:19,417 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:59:19,417 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:19,423 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:59:19,423 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:59:19,423 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:59:19,444 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 08:59:19,468 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:59:19,470 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:59:19,511 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 171 proven. 12 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2018-01-31 08:59:19,528 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:59:19,528 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-01-31 08:59:19,528 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-31 08:59:19,528 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-31 08:59:19,528 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-01-31 08:59:19,528 INFO L87 Difference]: Start difference. First operand 205 states and 218 transitions. Second operand 7 states. [2018-01-31 08:59:19,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:59:19,572 INFO L93 Difference]: Finished difference Result 342 states and 375 transitions. [2018-01-31 08:59:19,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-31 08:59:19,583 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 251 [2018-01-31 08:59:19,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:59:19,584 INFO L225 Difference]: With dead ends: 342 [2018-01-31 08:59:19,584 INFO L226 Difference]: Without dead ends: 213 [2018-01-31 08:59:19,585 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2018-01-31 08:59:19,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-01-31 08:59:19,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 211. [2018-01-31 08:59:19,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-01-31 08:59:19,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 224 transitions. [2018-01-31 08:59:19,589 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 224 transitions. Word has length 251 [2018-01-31 08:59:19,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:59:19,589 INFO L432 AbstractCegarLoop]: Abstraction has 211 states and 224 transitions. [2018-01-31 08:59:19,589 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-31 08:59:19,589 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 224 transitions. [2018-01-31 08:59:19,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2018-01-31 08:59:19,590 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:59:19,590 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:59:19,591 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr0AssertViolation]=== [2018-01-31 08:59:19,591 INFO L82 PathProgramCache]: Analyzing trace with hash -827888346, now seen corresponding path program 5 times [2018-01-31 08:59:19,591 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:59:19,591 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:59:19,591 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:19,591 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:59:19,591 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:19,597 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:59:19,598 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:59:19,598 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-31 08:59:19,604 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:59:19,614 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:19,616 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:19,618 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:19,621 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:19,625 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:19,632 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:19,633 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:59:19,635 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:59:19,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 276 proven. 27 refuted. 0 times theorem prover too weak. 707 trivial. 0 not checked. [2018-01-31 08:59:19,715 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:59:19,715 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-01-31 08:59:19,716 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-31 08:59:19,716 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-31 08:59:19,716 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-31 08:59:19,716 INFO L87 Difference]: Start difference. First operand 211 states and 224 transitions. Second operand 9 states. [2018-01-31 08:59:19,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:59:19,816 INFO L93 Difference]: Finished difference Result 354 states and 387 transitions. [2018-01-31 08:59:19,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-31 08:59:19,821 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 269 [2018-01-31 08:59:19,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:59:19,822 INFO L225 Difference]: With dead ends: 354 [2018-01-31 08:59:19,822 INFO L226 Difference]: Without dead ends: 219 [2018-01-31 08:59:19,822 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2018-01-31 08:59:19,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-01-31 08:59:19,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 217. [2018-01-31 08:59:19,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-01-31 08:59:19,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 230 transitions. [2018-01-31 08:59:19,826 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 230 transitions. Word has length 269 [2018-01-31 08:59:19,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:59:19,826 INFO L432 AbstractCegarLoop]: Abstraction has 217 states and 230 transitions. [2018-01-31 08:59:19,826 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-31 08:59:19,826 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 230 transitions. [2018-01-31 08:59:19,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-01-31 08:59:19,827 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:59:19,828 INFO L351 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 12, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:59:19,828 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr0AssertViolation]=== [2018-01-31 08:59:19,828 INFO L82 PathProgramCache]: Analyzing trace with hash -10401474, now seen corresponding path program 6 times [2018-01-31 08:59:19,828 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:59:19,828 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:59:19,828 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:19,828 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:59:19,828 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:19,835 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:59:19,835 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:59:19,835 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:59:19,854 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 08:59:19,865 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:19,867 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:19,871 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:19,928 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:19,937 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:19,967 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:20,026 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:20,027 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:59:20,030 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:59:20,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1316 backedges. 536 proven. 12 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2018-01-31 08:59:20,148 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:59:20,148 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-01-31 08:59:20,149 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-31 08:59:20,149 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-31 08:59:20,149 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-01-31 08:59:20,149 INFO L87 Difference]: Start difference. First operand 217 states and 230 transitions. Second operand 7 states. [2018-01-31 08:59:20,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:59:20,235 INFO L93 Difference]: Finished difference Result 312 states and 331 transitions. [2018-01-31 08:59:20,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-31 08:59:20,247 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 287 [2018-01-31 08:59:20,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:59:20,248 INFO L225 Difference]: With dead ends: 312 [2018-01-31 08:59:20,248 INFO L226 Difference]: Without dead ends: 243 [2018-01-31 08:59:20,249 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2018-01-31 08:59:20,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-01-31 08:59:20,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 233. [2018-01-31 08:59:20,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-01-31 08:59:20,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 246 transitions. [2018-01-31 08:59:20,253 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 246 transitions. Word has length 287 [2018-01-31 08:59:20,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:59:20,254 INFO L432 AbstractCegarLoop]: Abstraction has 233 states and 246 transitions. [2018-01-31 08:59:20,254 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-31 08:59:20,254 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 246 transitions. [2018-01-31 08:59:20,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-01-31 08:59:20,255 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:59:20,255 INFO L351 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 12, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:59:20,255 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr0AssertViolation]=== [2018-01-31 08:59:20,255 INFO L82 PathProgramCache]: Analyzing trace with hash -2056122891, now seen corresponding path program 7 times [2018-01-31 08:59:20,255 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:59:20,255 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:59:20,261 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:20,261 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:59:20,261 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:20,270 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:59:20,270 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:59:20,270 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-31 08:59:20,285 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:59:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:59:20,317 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:59:20,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1334 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2018-01-31 08:59:20,707 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:59:20,707 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-01-31 08:59:20,707 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-31 08:59:20,707 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-31 08:59:20,707 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2018-01-31 08:59:20,707 INFO L87 Difference]: Start difference. First operand 233 states and 246 transitions. Second operand 17 states. [2018-01-31 08:59:20,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:59:20,857 INFO L93 Difference]: Finished difference Result 410 states and 436 transitions. [2018-01-31 08:59:20,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-31 08:59:20,858 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 295 [2018-01-31 08:59:20,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:59:20,858 INFO L225 Difference]: With dead ends: 410 [2018-01-31 08:59:20,858 INFO L226 Difference]: Without dead ends: 246 [2018-01-31 08:59:20,859 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=318, Invalid=612, Unknown=0, NotChecked=0, Total=930 [2018-01-31 08:59:20,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-01-31 08:59:20,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 241. [2018-01-31 08:59:20,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-01-31 08:59:20,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 254 transitions. [2018-01-31 08:59:20,863 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 254 transitions. Word has length 295 [2018-01-31 08:59:20,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:59:20,863 INFO L432 AbstractCegarLoop]: Abstraction has 241 states and 254 transitions. [2018-01-31 08:59:20,863 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-31 08:59:20,863 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 254 transitions. [2018-01-31 08:59:20,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-01-31 08:59:20,864 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:59:20,864 INFO L351 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 12, 9, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:59:20,864 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr0AssertViolation]=== [2018-01-31 08:59:20,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1377280162, now seen corresponding path program 8 times [2018-01-31 08:59:20,865 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:59:20,865 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:59:20,865 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:20,865 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:59:20,865 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:20,871 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:59:20,871 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:59:20,871 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:59:20,885 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 08:59:20,903 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:20,921 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:20,925 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:59:20,927 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:59:21,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2018-01-31 08:59:21,063 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:59:21,063 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-01-31 08:59:21,063 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-31 08:59:21,063 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-31 08:59:21,064 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-01-31 08:59:21,064 INFO L87 Difference]: Start difference. First operand 241 states and 254 transitions. Second operand 19 states. [2018-01-31 08:59:21,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:59:21,453 INFO L93 Difference]: Finished difference Result 418 states and 444 transitions. [2018-01-31 08:59:21,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-31 08:59:21,454 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 303 [2018-01-31 08:59:21,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:59:21,454 INFO L225 Difference]: With dead ends: 418 [2018-01-31 08:59:21,455 INFO L226 Difference]: Without dead ends: 254 [2018-01-31 08:59:21,455 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=403, Invalid=787, Unknown=0, NotChecked=0, Total=1190 [2018-01-31 08:59:21,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-01-31 08:59:21,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 249. [2018-01-31 08:59:21,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-01-31 08:59:21,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 262 transitions. [2018-01-31 08:59:21,459 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 262 transitions. Word has length 303 [2018-01-31 08:59:21,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:59:21,460 INFO L432 AbstractCegarLoop]: Abstraction has 249 states and 262 transitions. [2018-01-31 08:59:21,460 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-31 08:59:21,460 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 262 transitions. [2018-01-31 08:59:21,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-01-31 08:59:21,461 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:59:21,461 INFO L351 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 12, 10, 9, 9, 9, 9, 9, 9, 9, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:59:21,461 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr0AssertViolation]=== [2018-01-31 08:59:21,461 INFO L82 PathProgramCache]: Analyzing trace with hash 2005874631, now seen corresponding path program 9 times [2018-01-31 08:59:21,461 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:59:21,461 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:59:21,462 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:21,462 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:59:21,462 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:21,468 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:59:21,468 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:59:21,468 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:59:21,474 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:59:21,486 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:59:21,490 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:59:21,537 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:59:21,555 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:59:21,612 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:59:21,613 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:59:21,616 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:59:21,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 315 proven. 20 refuted. 0 times theorem prover too weak. 1123 trivial. 0 not checked. [2018-01-31 08:59:21,931 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:59:21,932 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-01-31 08:59:21,932 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-31 08:59:21,932 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-31 08:59:21,932 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-31 08:59:21,932 INFO L87 Difference]: Start difference. First operand 249 states and 262 transitions. Second operand 9 states. [2018-01-31 08:59:21,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:59:21,976 INFO L93 Difference]: Finished difference Result 423 states and 458 transitions. [2018-01-31 08:59:21,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-31 08:59:21,976 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 311 [2018-01-31 08:59:21,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:59:21,977 INFO L225 Difference]: With dead ends: 423 [2018-01-31 08:59:21,977 INFO L226 Difference]: Without dead ends: 266 [2018-01-31 08:59:21,978 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2018-01-31 08:59:21,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2018-01-31 08:59:21,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 259. [2018-01-31 08:59:21,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-01-31 08:59:21,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 273 transitions. [2018-01-31 08:59:21,982 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 273 transitions. Word has length 311 [2018-01-31 08:59:21,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:59:21,982 INFO L432 AbstractCegarLoop]: Abstraction has 259 states and 273 transitions. [2018-01-31 08:59:21,982 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-31 08:59:21,982 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 273 transitions. [2018-01-31 08:59:21,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2018-01-31 08:59:21,983 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:59:21,983 INFO L351 BasicCegarLoop]: trace histogram [24, 21, 21, 21, 21, 12, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:59:21,983 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr0AssertViolation]=== [2018-01-31 08:59:21,984 INFO L82 PathProgramCache]: Analyzing trace with hash 161082331, now seen corresponding path program 10 times [2018-01-31 08:59:21,984 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:59:21,984 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:59:21,984 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:21,984 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:59:21,984 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:21,991 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:59:21,991 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:59:21,991 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:59:22,010 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 08:59:22,040 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:59:22,043 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:59:22,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1902 backedges. 486 proven. 48 refuted. 0 times theorem prover too weak. 1368 trivial. 0 not checked. [2018-01-31 08:59:22,130 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:59:22,130 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-01-31 08:59:22,131 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-31 08:59:22,131 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-31 08:59:22,131 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-01-31 08:59:22,131 INFO L87 Difference]: Start difference. First operand 259 states and 273 transitions. Second operand 11 states. [2018-01-31 08:59:22,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:59:22,254 INFO L93 Difference]: Finished difference Result 434 states and 469 transitions. [2018-01-31 08:59:22,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-31 08:59:22,255 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 341 [2018-01-31 08:59:22,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:59:22,255 INFO L225 Difference]: With dead ends: 434 [2018-01-31 08:59:22,256 INFO L226 Difference]: Without dead ends: 267 [2018-01-31 08:59:22,256 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=123, Invalid=219, Unknown=0, NotChecked=0, Total=342 [2018-01-31 08:59:22,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-01-31 08:59:22,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 265. [2018-01-31 08:59:22,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-01-31 08:59:22,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 279 transitions. [2018-01-31 08:59:22,260 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 279 transitions. Word has length 341 [2018-01-31 08:59:22,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:59:22,260 INFO L432 AbstractCegarLoop]: Abstraction has 265 states and 279 transitions. [2018-01-31 08:59:22,260 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-31 08:59:22,260 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 279 transitions. [2018-01-31 08:59:22,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2018-01-31 08:59:22,262 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:59:22,262 INFO L351 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 24, 15, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:59:22,262 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr0AssertViolation]=== [2018-01-31 08:59:22,262 INFO L82 PathProgramCache]: Analyzing trace with hash -918003405, now seen corresponding path program 11 times [2018-01-31 08:59:22,262 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:59:22,262 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:59:22,262 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:22,262 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:59:22,263 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:22,269 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:59:22,269 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:59:22,269 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:59:22,290 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 08:59:22,302 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:22,303 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:22,305 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:22,307 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:22,310 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:22,313 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:22,317 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:22,324 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:22,332 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:22,333 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:59:22,336 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:59:22,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2316 backedges. 657 proven. 75 refuted. 0 times theorem prover too weak. 1584 trivial. 0 not checked. [2018-01-31 08:59:22,815 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:59:22,815 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-01-31 08:59:22,816 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-31 08:59:22,816 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-31 08:59:22,816 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-31 08:59:22,816 INFO L87 Difference]: Start difference. First operand 265 states and 279 transitions. Second operand 13 states. [2018-01-31 08:59:22,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:59:22,908 INFO L93 Difference]: Finished difference Result 446 states and 481 transitions. [2018-01-31 08:59:22,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-31 08:59:22,910 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 359 [2018-01-31 08:59:22,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:59:22,911 INFO L225 Difference]: With dead ends: 446 [2018-01-31 08:59:22,911 INFO L226 Difference]: Without dead ends: 273 [2018-01-31 08:59:22,912 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=178, Invalid=328, Unknown=0, NotChecked=0, Total=506 [2018-01-31 08:59:22,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-01-31 08:59:22,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 271. [2018-01-31 08:59:22,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-01-31 08:59:22,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 285 transitions. [2018-01-31 08:59:22,925 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 285 transitions. Word has length 359 [2018-01-31 08:59:22,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:59:22,925 INFO L432 AbstractCegarLoop]: Abstraction has 271 states and 285 transitions. [2018-01-31 08:59:22,925 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-31 08:59:22,925 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 285 transitions. [2018-01-31 08:59:22,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-01-31 08:59:22,926 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:59:22,926 INFO L351 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 27, 18, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:59:22,926 INFO L371 AbstractCegarLoop]: === Iteration 22 === [mainErr0AssertViolation]=== [2018-01-31 08:59:22,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1797410677, now seen corresponding path program 12 times [2018-01-31 08:59:22,927 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:59:22,927 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:59:22,934 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:22,934 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:59:22,934 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:22,948 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:59:22,948 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:59:22,948 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:59:22,974 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 08:59:22,986 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:22,988 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:22,992 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:22,995 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:23,002 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:23,013 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:23,022 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:23,201 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:23,282 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:23,283 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:59:23,286 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:59:23,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2784 backedges. 1140 proven. 30 refuted. 0 times theorem prover too weak. 1614 trivial. 0 not checked. [2018-01-31 08:59:23,948 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:59:23,948 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-01-31 08:59:23,948 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-31 08:59:23,948 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-31 08:59:23,948 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-31 08:59:23,949 INFO L87 Difference]: Start difference. First operand 271 states and 285 transitions. Second operand 9 states. [2018-01-31 08:59:24,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:59:24,045 INFO L93 Difference]: Finished difference Result 388 states and 409 transitions. [2018-01-31 08:59:24,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-31 08:59:24,050 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 377 [2018-01-31 08:59:24,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:59:24,051 INFO L225 Difference]: With dead ends: 388 [2018-01-31 08:59:24,051 INFO L226 Difference]: Without dead ends: 297 [2018-01-31 08:59:24,052 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2018-01-31 08:59:24,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2018-01-31 08:59:24,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 287. [2018-01-31 08:59:24,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-01-31 08:59:24,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 301 transitions. [2018-01-31 08:59:24,056 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 301 transitions. Word has length 377 [2018-01-31 08:59:24,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:59:24,056 INFO L432 AbstractCegarLoop]: Abstraction has 287 states and 301 transitions. [2018-01-31 08:59:24,056 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-31 08:59:24,057 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 301 transitions. [2018-01-31 08:59:24,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2018-01-31 08:59:24,058 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:59:24,058 INFO L351 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 27, 18, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:59:24,058 INFO L371 AbstractCegarLoop]: === Iteration 23 === [mainErr0AssertViolation]=== [2018-01-31 08:59:24,058 INFO L82 PathProgramCache]: Analyzing trace with hash 556198146, now seen corresponding path program 13 times [2018-01-31 08:59:24,058 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:59:24,058 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:59:24,059 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:24,059 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:59:24,059 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:24,065 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:59:24,065 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:59:24,065 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:59:24,077 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:59:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:59:24,116 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:59:24,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2810 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 2504 trivial. 0 not checked. [2018-01-31 08:59:24,503 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:59:24,503 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-01-31 08:59:24,503 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-31 08:59:24,504 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-31 08:59:24,504 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-31 08:59:24,504 INFO L87 Difference]: Start difference. First operand 287 states and 301 transitions. Second operand 21 states. [2018-01-31 08:59:24,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:59:24,689 INFO L93 Difference]: Finished difference Result 502 states and 530 transitions. [2018-01-31 08:59:24,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-01-31 08:59:24,697 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 385 [2018-01-31 08:59:24,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:59:24,698 INFO L225 Difference]: With dead ends: 502 [2018-01-31 08:59:24,698 INFO L226 Difference]: Without dead ends: 300 [2018-01-31 08:59:24,699 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=498, Invalid=984, Unknown=0, NotChecked=0, Total=1482 [2018-01-31 08:59:24,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2018-01-31 08:59:24,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 295. [2018-01-31 08:59:24,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-01-31 08:59:24,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 309 transitions. [2018-01-31 08:59:24,704 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 309 transitions. Word has length 385 [2018-01-31 08:59:24,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:59:24,704 INFO L432 AbstractCegarLoop]: Abstraction has 295 states and 309 transitions. [2018-01-31 08:59:24,704 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-31 08:59:24,704 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 309 transitions. [2018-01-31 08:59:24,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2018-01-31 08:59:24,705 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:59:24,706 INFO L351 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 27, 18, 11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:59:24,706 INFO L371 AbstractCegarLoop]: === Iteration 24 === [mainErr0AssertViolation]=== [2018-01-31 08:59:24,706 INFO L82 PathProgramCache]: Analyzing trace with hash 248779051, now seen corresponding path program 14 times [2018-01-31 08:59:24,706 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:59:24,706 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:59:24,706 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:24,706 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:59:24,706 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:24,713 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:59:24,713 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:59:24,713 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:59:24,718 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 08:59:24,730 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:24,762 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:24,766 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:59:24,769 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:59:25,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2884 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 2504 trivial. 0 not checked. [2018-01-31 08:59:25,036 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:59:25,036 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-01-31 08:59:25,036 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-31 08:59:25,037 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-31 08:59:25,037 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2018-01-31 08:59:25,037 INFO L87 Difference]: Start difference. First operand 295 states and 309 transitions. Second operand 23 states. [2018-01-31 08:59:25,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:59:25,347 INFO L93 Difference]: Finished difference Result 510 states and 538 transitions. [2018-01-31 08:59:25,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-01-31 08:59:25,348 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 393 [2018-01-31 08:59:25,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:59:25,348 INFO L225 Difference]: With dead ends: 510 [2018-01-31 08:59:25,348 INFO L226 Difference]: Without dead ends: 308 [2018-01-31 08:59:25,349 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=603, Invalid=1203, Unknown=0, NotChecked=0, Total=1806 [2018-01-31 08:59:25,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2018-01-31 08:59:25,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 303. [2018-01-31 08:59:25,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-01-31 08:59:25,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 317 transitions. [2018-01-31 08:59:25,357 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 317 transitions. Word has length 393 [2018-01-31 08:59:25,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:59:25,357 INFO L432 AbstractCegarLoop]: Abstraction has 303 states and 317 transitions. [2018-01-31 08:59:25,357 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-31 08:59:25,357 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 317 transitions. [2018-01-31 08:59:25,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2018-01-31 08:59:25,359 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:59:25,360 INFO L351 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 27, 18, 12, 11, 11, 11, 11, 11, 11, 11, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:59:25,360 INFO L371 AbstractCegarLoop]: === Iteration 25 === [mainErr0AssertViolation]=== [2018-01-31 08:59:25,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1875837012, now seen corresponding path program 15 times [2018-01-31 08:59:25,360 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:59:25,360 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:59:25,360 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:25,360 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:59:25,360 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:25,368 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:59:25,368 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:59:25,369 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:59:25,373 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:59:25,386 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:59:25,390 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:59:25,438 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:59:25,460 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:59:26,639 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:59:26,706 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:59:26,707 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:59:26,709 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:59:27,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2966 backedges. 1140 proven. 56 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2018-01-31 08:59:27,074 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:59:27,074 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-01-31 08:59:27,075 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-31 08:59:27,075 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-31 08:59:27,075 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-01-31 08:59:27,075 INFO L87 Difference]: Start difference. First operand 303 states and 317 transitions. Second operand 11 states. [2018-01-31 08:59:27,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:59:27,159 INFO L93 Difference]: Finished difference Result 420 states and 441 transitions. [2018-01-31 08:59:27,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-31 08:59:27,160 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 401 [2018-01-31 08:59:27,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:59:27,160 INFO L225 Difference]: With dead ends: 420 [2018-01-31 08:59:27,161 INFO L226 Difference]: Without dead ends: 329 [2018-01-31 08:59:27,161 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=219, Unknown=0, NotChecked=0, Total=342 [2018-01-31 08:59:27,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2018-01-31 08:59:27,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 319. [2018-01-31 08:59:27,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-01-31 08:59:27,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 333 transitions. [2018-01-31 08:59:27,165 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 333 transitions. Word has length 401 [2018-01-31 08:59:27,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:59:27,165 INFO L432 AbstractCegarLoop]: Abstraction has 319 states and 333 transitions. [2018-01-31 08:59:27,165 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-31 08:59:27,165 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 333 transitions. [2018-01-31 08:59:27,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2018-01-31 08:59:27,167 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:59:27,167 INFO L351 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 27, 18, 12, 11, 11, 11, 11, 11, 11, 11, 9, 9, 9, 9, 9, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:59:27,167 INFO L371 AbstractCegarLoop]: === Iteration 26 === [mainErr0AssertViolation]=== [2018-01-31 08:59:27,167 INFO L82 PathProgramCache]: Analyzing trace with hash 51666891, now seen corresponding path program 16 times [2018-01-31 08:59:27,167 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:59:27,167 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:59:27,168 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:27,168 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:59:27,168 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:27,174 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:59:27,174 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:59:27,174 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-31 08:59:27,189 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:59:27,238 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:59:27,241 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:59:27,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3000 backedges. 852 proven. 108 refuted. 0 times theorem prover too weak. 2040 trivial. 0 not checked. [2018-01-31 08:59:27,530 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:59:27,530 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-01-31 08:59:27,531 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-31 08:59:27,531 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-31 08:59:27,531 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-01-31 08:59:27,531 INFO L87 Difference]: Start difference. First operand 319 states and 333 transitions. Second operand 15 states. [2018-01-31 08:59:27,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:59:27,666 INFO L93 Difference]: Finished difference Result 538 states and 573 transitions. [2018-01-31 08:59:27,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-31 08:59:27,666 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 409 [2018-01-31 08:59:27,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:59:27,667 INFO L225 Difference]: With dead ends: 538 [2018-01-31 08:59:27,667 INFO L226 Difference]: Without dead ends: 327 [2018-01-31 08:59:27,668 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=243, Invalid=459, Unknown=0, NotChecked=0, Total=702 [2018-01-31 08:59:27,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-01-31 08:59:27,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 325. [2018-01-31 08:59:27,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-01-31 08:59:27,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 339 transitions. [2018-01-31 08:59:27,672 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 339 transitions. Word has length 409 [2018-01-31 08:59:27,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:59:27,673 INFO L432 AbstractCegarLoop]: Abstraction has 325 states and 339 transitions. [2018-01-31 08:59:27,673 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-31 08:59:27,673 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 339 transitions. [2018-01-31 08:59:27,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2018-01-31 08:59:27,675 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:59:27,675 INFO L351 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 21, 12, 11, 11, 11, 11, 11, 11, 11, 9, 9, 9, 9, 9, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:59:27,675 INFO L371 AbstractCegarLoop]: === Iteration 27 === [mainErr0AssertViolation]=== [2018-01-31 08:59:27,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1154159069, now seen corresponding path program 17 times [2018-01-31 08:59:27,675 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:59:27,675 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:59:27,675 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:27,676 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:59:27,676 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:27,682 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:59:27,682 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:59:27,683 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:59:27,695 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 08:59:27,705 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:27,707 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:27,709 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:27,711 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:27,713 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:27,716 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:27,720 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:27,728 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:27,749 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:27,812 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:27,866 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:27,867 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:59:27,870 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:59:28,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3522 backedges. 1071 proven. 147 refuted. 0 times theorem prover too weak. 2304 trivial. 0 not checked. [2018-01-31 08:59:28,099 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:59:28,099 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-01-31 08:59:28,099 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-31 08:59:28,099 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-31 08:59:28,099 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2018-01-31 08:59:28,099 INFO L87 Difference]: Start difference. First operand 325 states and 339 transitions. Second operand 17 states. [2018-01-31 08:59:28,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:59:28,226 INFO L93 Difference]: Finished difference Result 550 states and 585 transitions. [2018-01-31 08:59:28,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-31 08:59:28,226 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 427 [2018-01-31 08:59:28,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:59:28,227 INFO L225 Difference]: With dead ends: 550 [2018-01-31 08:59:28,227 INFO L226 Difference]: Without dead ends: 333 [2018-01-31 08:59:28,227 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=318, Invalid=612, Unknown=0, NotChecked=0, Total=930 [2018-01-31 08:59:28,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-01-31 08:59:28,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 331. [2018-01-31 08:59:28,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-01-31 08:59:28,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 345 transitions. [2018-01-31 08:59:28,231 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 345 transitions. Word has length 427 [2018-01-31 08:59:28,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:59:28,232 INFO L432 AbstractCegarLoop]: Abstraction has 331 states and 345 transitions. [2018-01-31 08:59:28,232 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-31 08:59:28,232 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 345 transitions. [2018-01-31 08:59:28,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2018-01-31 08:59:28,233 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:59:28,233 INFO L351 BasicCegarLoop]: trace histogram [36, 33, 33, 33, 33, 24, 12, 11, 11, 11, 11, 11, 11, 11, 9, 9, 9, 9, 9, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:59:28,233 INFO L371 AbstractCegarLoop]: === Iteration 28 === [mainErr0AssertViolation]=== [2018-01-31 08:59:28,234 INFO L82 PathProgramCache]: Analyzing trace with hash -483371397, now seen corresponding path program 18 times [2018-01-31 08:59:28,234 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:59:28,234 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:59:28,234 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:28,234 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:59:28,234 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:28,240 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:59:28,241 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:59:28,241 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:59:28,265 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 08:59:28,279 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:28,281 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:28,285 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:28,289 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:28,298 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:28,309 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:28,321 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:28,386 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:28,415 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:28,434 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:28,554 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:28,555 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:59:28,559 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:59:28,769 INFO L134 CoverageAnalysis]: Checked inductivity of 4098 backedges. 856 proven. 45 refuted. 0 times theorem prover too weak. 3197 trivial. 0 not checked. [2018-01-31 08:59:28,787 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:59:28,788 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-01-31 08:59:28,788 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-31 08:59:28,788 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-31 08:59:28,788 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2018-01-31 08:59:28,788 INFO L87 Difference]: Start difference. First operand 331 states and 345 transitions. Second operand 14 states. [2018-01-31 08:59:28,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:59:28,899 INFO L93 Difference]: Finished difference Result 571 states and 608 transitions. [2018-01-31 08:59:28,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-31 08:59:28,899 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 445 [2018-01-31 08:59:28,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:59:28,900 INFO L225 Difference]: With dead ends: 571 [2018-01-31 08:59:28,900 INFO L226 Difference]: Without dead ends: 348 [2018-01-31 08:59:28,900 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2018-01-31 08:59:28,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2018-01-31 08:59:28,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 341. [2018-01-31 08:59:28,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-01-31 08:59:28,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 356 transitions. [2018-01-31 08:59:28,905 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 356 transitions. Word has length 445 [2018-01-31 08:59:28,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:59:28,905 INFO L432 AbstractCegarLoop]: Abstraction has 341 states and 356 transitions. [2018-01-31 08:59:28,905 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-31 08:59:28,905 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 356 transitions. [2018-01-31 08:59:28,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2018-01-31 08:59:28,906 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:59:28,907 INFO L351 BasicCegarLoop]: trace histogram [39, 36, 36, 36, 36, 24, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:59:28,907 INFO L371 AbstractCegarLoop]: === Iteration 29 === [mainErr0AssertViolation]=== [2018-01-31 08:59:28,907 INFO L82 PathProgramCache]: Analyzing trace with hash -2032134513, now seen corresponding path program 19 times [2018-01-31 08:59:28,907 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:59:28,907 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:59:28,907 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:28,907 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:59:28,908 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:28,914 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:59:28,914 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:59:28,914 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:59:28,928 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:59:28,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:59:28,975 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:59:29,458 INFO L134 CoverageAnalysis]: Checked inductivity of 4848 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 4386 trivial. 0 not checked. [2018-01-31 08:59:29,475 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:59:29,475 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-01-31 08:59:29,476 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-31 08:59:29,476 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-31 08:59:29,476 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2018-01-31 08:59:29,476 INFO L87 Difference]: Start difference. First operand 341 states and 356 transitions. Second operand 25 states. [2018-01-31 08:59:29,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:59:29,754 INFO L93 Difference]: Finished difference Result 594 states and 624 transitions. [2018-01-31 08:59:29,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-01-31 08:59:29,755 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 475 [2018-01-31 08:59:29,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:59:29,755 INFO L225 Difference]: With dead ends: 594 [2018-01-31 08:59:29,756 INFO L226 Difference]: Without dead ends: 354 [2018-01-31 08:59:29,756 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=718, Invalid=1444, Unknown=0, NotChecked=0, Total=2162 [2018-01-31 08:59:29,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2018-01-31 08:59:29,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 349. [2018-01-31 08:59:29,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-01-31 08:59:29,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 364 transitions. [2018-01-31 08:59:29,761 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 364 transitions. Word has length 475 [2018-01-31 08:59:29,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:59:29,761 INFO L432 AbstractCegarLoop]: Abstraction has 349 states and 364 transitions. [2018-01-31 08:59:29,762 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-31 08:59:29,762 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 364 transitions. [2018-01-31 08:59:29,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2018-01-31 08:59:29,763 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:59:29,764 INFO L351 BasicCegarLoop]: trace histogram [39, 36, 36, 36, 36, 24, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:59:29,764 INFO L371 AbstractCegarLoop]: === Iteration 30 === [mainErr0AssertViolation]=== [2018-01-31 08:59:29,764 INFO L82 PathProgramCache]: Analyzing trace with hash 8070520, now seen corresponding path program 20 times [2018-01-31 08:59:29,764 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:59:29,764 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:59:29,764 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:29,764 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:59:29,765 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:29,771 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:59:29,771 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:59:29,771 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:59:29,785 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 08:59:29,798 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:29,838 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:29,844 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:59:29,846 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:59:30,563 INFO L134 CoverageAnalysis]: Checked inductivity of 4938 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 4386 trivial. 0 not checked. [2018-01-31 08:59:30,580 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:59:30,580 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-01-31 08:59:30,580 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-31 08:59:30,581 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-31 08:59:30,581 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2018-01-31 08:59:30,581 INFO L87 Difference]: Start difference. First operand 349 states and 364 transitions. Second operand 27 states. [2018-01-31 08:59:31,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:59:31,510 INFO L93 Difference]: Finished difference Result 602 states and 632 transitions. [2018-01-31 08:59:31,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-01-31 08:59:31,511 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 483 [2018-01-31 08:59:31,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:59:31,512 INFO L225 Difference]: With dead ends: 602 [2018-01-31 08:59:31,512 INFO L226 Difference]: Without dead ends: 362 [2018-01-31 08:59:31,513 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 457 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=843, Invalid=1707, Unknown=0, NotChecked=0, Total=2550 [2018-01-31 08:59:31,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2018-01-31 08:59:31,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 357. [2018-01-31 08:59:31,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-01-31 08:59:31,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 372 transitions. [2018-01-31 08:59:31,518 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 372 transitions. Word has length 483 [2018-01-31 08:59:31,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:59:31,518 INFO L432 AbstractCegarLoop]: Abstraction has 357 states and 372 transitions. [2018-01-31 08:59:31,518 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-31 08:59:31,518 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 372 transitions. [2018-01-31 08:59:31,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2018-01-31 08:59:31,520 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:59:31,520 INFO L351 BasicCegarLoop]: trace histogram [39, 36, 36, 36, 36, 24, 14, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:59:31,520 INFO L371 AbstractCegarLoop]: === Iteration 31 === [mainErr0AssertViolation]=== [2018-01-31 08:59:31,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1601256289, now seen corresponding path program 21 times [2018-01-31 08:59:31,520 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:59:31,521 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:59:31,521 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:31,521 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:59:31,521 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:31,528 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:59:31,528 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:59:31,528 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:59:31,544 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:59:31,557 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:59:31,562 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:59:31,569 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:59:31,587 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:59:31,621 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:59:31,668 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:59:37,418 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:59:37,420 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:59:37,424 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:59:37,533 INFO L134 CoverageAnalysis]: Checked inductivity of 5036 backedges. 1976 proven. 90 refuted. 0 times theorem prover too weak. 2970 trivial. 0 not checked. [2018-01-31 08:59:37,551 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:59:37,551 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-01-31 08:59:37,551 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-31 08:59:37,551 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-31 08:59:37,552 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-31 08:59:37,552 INFO L87 Difference]: Start difference. First operand 357 states and 372 transitions. Second operand 13 states. [2018-01-31 08:59:37,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:59:37,641 INFO L93 Difference]: Finished difference Result 496 states and 519 transitions. [2018-01-31 08:59:37,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-31 08:59:37,641 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 491 [2018-01-31 08:59:37,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:59:37,642 INFO L225 Difference]: With dead ends: 496 [2018-01-31 08:59:37,642 INFO L226 Difference]: Without dead ends: 383 [2018-01-31 08:59:37,642 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 479 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=178, Invalid=328, Unknown=0, NotChecked=0, Total=506 [2018-01-31 08:59:37,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-01-31 08:59:37,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 373. [2018-01-31 08:59:37,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2018-01-31 08:59:37,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 388 transitions. [2018-01-31 08:59:37,654 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 388 transitions. Word has length 491 [2018-01-31 08:59:37,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:59:37,654 INFO L432 AbstractCegarLoop]: Abstraction has 373 states and 388 transitions. [2018-01-31 08:59:37,654 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-31 08:59:37,654 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 388 transitions. [2018-01-31 08:59:37,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2018-01-31 08:59:37,656 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:59:37,657 INFO L351 BasicCegarLoop]: trace histogram [39, 36, 36, 36, 36, 24, 14, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:59:37,657 INFO L371 AbstractCegarLoop]: === Iteration 32 === [mainErr0AssertViolation]=== [2018-01-31 08:59:37,657 INFO L82 PathProgramCache]: Analyzing trace with hash 2026389144, now seen corresponding path program 22 times [2018-01-31 08:59:37,657 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:59:37,657 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:59:37,658 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:37,658 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:59:37,658 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:37,665 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:59:37,666 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:59:37,666 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:59:37,679 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 08:59:37,719 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:59:37,722 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:59:37,852 INFO L134 CoverageAnalysis]: Checked inductivity of 5078 backedges. 1467 proven. 192 refuted. 0 times theorem prover too weak. 3419 trivial. 0 not checked. [2018-01-31 08:59:37,868 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:59:37,868 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-01-31 08:59:37,869 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-31 08:59:37,869 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-31 08:59:37,869 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-01-31 08:59:37,869 INFO L87 Difference]: Start difference. First operand 373 states and 388 transitions. Second operand 19 states. [2018-01-31 08:59:38,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:59:38,044 INFO L93 Difference]: Finished difference Result 630 states and 667 transitions. [2018-01-31 08:59:38,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-31 08:59:38,054 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 499 [2018-01-31 08:59:38,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:59:38,055 INFO L225 Difference]: With dead ends: 630 [2018-01-31 08:59:38,055 INFO L226 Difference]: Without dead ends: 381 [2018-01-31 08:59:38,056 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 481 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=403, Invalid=787, Unknown=0, NotChecked=0, Total=1190 [2018-01-31 08:59:38,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2018-01-31 08:59:38,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 379. [2018-01-31 08:59:38,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-01-31 08:59:38,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 394 transitions. [2018-01-31 08:59:38,063 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 394 transitions. Word has length 499 [2018-01-31 08:59:38,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:59:38,064 INFO L432 AbstractCegarLoop]: Abstraction has 379 states and 394 transitions. [2018-01-31 08:59:38,064 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-31 08:59:38,064 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 394 transitions. [2018-01-31 08:59:38,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2018-01-31 08:59:38,065 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:59:38,066 INFO L351 BasicCegarLoop]: trace histogram [42, 39, 39, 39, 39, 27, 14, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:59:38,066 INFO L371 AbstractCegarLoop]: === Iteration 33 === [mainErr0AssertViolation]=== [2018-01-31 08:59:38,066 INFO L82 PathProgramCache]: Analyzing trace with hash 2101325872, now seen corresponding path program 23 times [2018-01-31 08:59:38,066 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:59:38,066 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:59:38,066 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:38,066 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:59:38,066 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:38,075 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:59:38,075 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:59:38,075 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-31 08:59:38,080 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:59:38,091 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:38,092 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:38,094 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:38,096 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:38,098 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:38,101 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:38,104 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:38,107 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:38,111 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:38,116 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:38,125 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:38,164 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:38,208 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:38,300 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:59:38,302 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:59:38,305 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:59:39,325 INFO L134 CoverageAnalysis]: Checked inductivity of 5762 backedges. 1752 proven. 243 refuted. 0 times theorem prover too weak. 3767 trivial. 0 not checked. [2018-01-31 08:59:39,343 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:59:39,343 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-01-31 08:59:39,343 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-31 08:59:39,343 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-31 08:59:39,343 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-31 08:59:39,343 INFO L87 Difference]: Start difference. First operand 379 states and 394 transitions. Second operand 21 states. [2018-01-31 08:59:39,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:59:39,484 INFO L93 Difference]: Finished difference Result 642 states and 679 transitions. [2018-01-31 08:59:39,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-01-31 08:59:39,486 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 517 [2018-01-31 08:59:39,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:59:39,487 INFO L225 Difference]: With dead ends: 642 [2018-01-31 08:59:39,487 INFO L226 Difference]: Without dead ends: 387 [2018-01-31 08:59:39,488 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 497 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=498, Invalid=984, Unknown=0, NotChecked=0, Total=1482 [2018-01-31 08:59:39,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-01-31 08:59:39,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 385. [2018-01-31 08:59:39,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2018-01-31 08:59:39,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 400 transitions. [2018-01-31 08:59:39,493 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 400 transitions. Word has length 517 [2018-01-31 08:59:39,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:59:39,493 INFO L432 AbstractCegarLoop]: Abstraction has 385 states and 400 transitions. [2018-01-31 08:59:39,493 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-31 08:59:39,493 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 400 transitions. [2018-01-31 08:59:39,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2018-01-31 08:59:39,495 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:59:39,495 INFO L351 BasicCegarLoop]: trace histogram [45, 42, 42, 42, 42, 30, 14, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:59:39,495 INFO L371 AbstractCegarLoop]: === Iteration 34 === [mainErr0AssertViolation]=== [2018-01-31 08:59:39,495 INFO L82 PathProgramCache]: Analyzing trace with hash 227789768, now seen corresponding path program 24 times [2018-01-31 08:59:39,495 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:59:39,495 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:59:39,496 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:39,496 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:59:39,496 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:59:39,503 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 08:59:39,503 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 08:59:39,503 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 08:59:39,521 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 08:59:39,535 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:39,538 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:39,543 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:39,546 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:39,556 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:39,568 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:39,579 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:39,600 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:39,811 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:39,882 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:40,248 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:40,572 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:59,834 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:59:59,836 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:59:59,839 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:59:59,945 INFO L134 CoverageAnalysis]: Checked inductivity of 6500 backedges. 1243 proven. 80 refuted. 0 times theorem prover too weak. 5177 trivial. 0 not checked. [2018-01-31 08:59:59,963 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:59:59,963 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-01-31 08:59:59,963 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-31 08:59:59,963 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-31 08:59:59,964 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-31 08:59:59,964 INFO L87 Difference]: Start difference. First operand 385 states and 400 transitions. Second operand 13 states. [2018-01-31 09:00:00,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:00:00,077 INFO L93 Difference]: Finished difference Result 663 states and 702 transitions. [2018-01-31 09:00:00,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-31 09:00:00,077 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 535 [2018-01-31 09:00:00,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:00:00,078 INFO L225 Difference]: With dead ends: 663 [2018-01-31 09:00:00,078 INFO L226 Difference]: Without dead ends: 402 [2018-01-31 09:00:00,078 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=178, Invalid=328, Unknown=0, NotChecked=0, Total=506 [2018-01-31 09:00:00,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2018-01-31 09:00:00,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 395. [2018-01-31 09:00:00,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2018-01-31 09:00:00,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 411 transitions. [2018-01-31 09:00:00,093 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 411 transitions. Word has length 535 [2018-01-31 09:00:00,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:00:00,094 INFO L432 AbstractCegarLoop]: Abstraction has 395 states and 411 transitions. [2018-01-31 09:00:00,094 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-31 09:00:00,094 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 411 transitions. [2018-01-31 09:00:00,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2018-01-31 09:00:00,102 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:00:00,103 INFO L351 BasicCegarLoop]: trace histogram [48, 45, 45, 45, 45, 30, 15, 15, 15, 15, 15, 14, 13, 13, 13, 13, 13, 13, 13, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:00:00,103 INFO L371 AbstractCegarLoop]: === Iteration 35 === [mainErr0AssertViolation]=== [2018-01-31 09:00:00,103 INFO L82 PathProgramCache]: Analyzing trace with hash 910575260, now seen corresponding path program 25 times [2018-01-31 09:00:00,103 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:00:00,103 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:00:00,103 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:00:00,103 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:00:00,103 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:00:00,119 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:00:00,119 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:00:00,119 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-31 09:00:00,137 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:00:00,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:00:00,189 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:00:00,509 INFO L134 CoverageAnalysis]: Checked inductivity of 7448 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 6798 trivial. 0 not checked. [2018-01-31 09:00:00,527 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:00:00,527 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-01-31 09:00:00,527 INFO L409 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-01-31 09:00:00,527 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-01-31 09:00:00,527 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2018-01-31 09:00:00,527 INFO L87 Difference]: Start difference. First operand 395 states and 411 transitions. Second operand 29 states. [2018-01-31 09:00:00,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:00:00,886 INFO L93 Difference]: Finished difference Result 686 states and 718 transitions. [2018-01-31 09:00:00,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-01-31 09:00:00,886 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 565 [2018-01-31 09:00:00,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:00:00,887 INFO L225 Difference]: With dead ends: 686 [2018-01-31 09:00:00,887 INFO L226 Difference]: Without dead ends: 408 [2018-01-31 09:00:00,888 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=978, Invalid=1992, Unknown=0, NotChecked=0, Total=2970 [2018-01-31 09:00:00,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2018-01-31 09:00:00,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 403. [2018-01-31 09:00:00,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2018-01-31 09:00:00,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 419 transitions. [2018-01-31 09:00:00,894 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 419 transitions. Word has length 565 [2018-01-31 09:00:00,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:00:00,894 INFO L432 AbstractCegarLoop]: Abstraction has 403 states and 419 transitions. [2018-01-31 09:00:00,894 INFO L433 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-01-31 09:00:00,895 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 419 transitions. [2018-01-31 09:00:00,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2018-01-31 09:00:00,897 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:00:00,897 INFO L351 BasicCegarLoop]: trace histogram [48, 45, 45, 45, 45, 30, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:00:00,897 INFO L371 AbstractCegarLoop]: === Iteration 36 === [mainErr0AssertViolation]=== [2018-01-31 09:00:00,897 INFO L82 PathProgramCache]: Analyzing trace with hash -330150843, now seen corresponding path program 26 times [2018-01-31 09:00:00,897 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:00:00,897 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:00:00,898 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:00:00,898 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:00:00,898 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:00:00,905 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:00:00,906 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:00:00,906 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-31 09:00:00,930 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:00:00,948 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:00,980 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:00,986 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:00:00,989 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:00:01,261 INFO L134 CoverageAnalysis]: Checked inductivity of 7554 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 6798 trivial. 0 not checked. [2018-01-31 09:00:01,279 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:00:01,279 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-01-31 09:00:01,280 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-31 09:00:01,280 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-31 09:00:01,280 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2018-01-31 09:00:01,280 INFO L87 Difference]: Start difference. First operand 403 states and 419 transitions. Second operand 31 states. [2018-01-31 09:00:01,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:00:01,605 INFO L93 Difference]: Finished difference Result 694 states and 726 transitions. [2018-01-31 09:00:01,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-01-31 09:00:01,605 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 573 [2018-01-31 09:00:01,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:00:01,606 INFO L225 Difference]: With dead ends: 694 [2018-01-31 09:00:01,606 INFO L226 Difference]: Without dead ends: 416 [2018-01-31 09:00:01,607 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 600 GetRequests, 543 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=1123, Invalid=2299, Unknown=0, NotChecked=0, Total=3422 [2018-01-31 09:00:01,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2018-01-31 09:00:01,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 411. [2018-01-31 09:00:01,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-01-31 09:00:01,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 427 transitions. [2018-01-31 09:00:01,611 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 427 transitions. Word has length 573 [2018-01-31 09:00:01,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:00:01,612 INFO L432 AbstractCegarLoop]: Abstraction has 411 states and 427 transitions. [2018-01-31 09:00:01,612 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-31 09:00:01,612 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 427 transitions. [2018-01-31 09:00:01,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2018-01-31 09:00:01,614 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:00:01,614 INFO L351 BasicCegarLoop]: trace histogram [48, 45, 45, 45, 45, 30, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:00:01,614 INFO L371 AbstractCegarLoop]: === Iteration 37 === [mainErr0AssertViolation]=== [2018-01-31 09:00:01,614 INFO L82 PathProgramCache]: Analyzing trace with hash 230070510, now seen corresponding path program 27 times [2018-01-31 09:00:01,614 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:00:01,614 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:00:01,615 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:00:01,615 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:00:01,615 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:00:01,623 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:00:01,623 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:00:01,623 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:00:01,644 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:00:01,659 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:00:01,663 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:00:01,670 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:00:01,691 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:00:02,400 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:00:02,560 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:00:03,136 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:00:03,385 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:00:03,387 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:00:03,391 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:00:03,537 INFO L134 CoverageAnalysis]: Checked inductivity of 7668 backedges. 1614 proven. 125 refuted. 0 times theorem prover too weak. 5929 trivial. 0 not checked. [2018-01-31 09:00:03,558 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:00:03,558 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-01-31 09:00:03,558 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-31 09:00:03,558 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-31 09:00:03,558 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-01-31 09:00:03,558 INFO L87 Difference]: Start difference. First operand 411 states and 427 transitions. Second operand 15 states. [2018-01-31 09:00:03,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:00:03,765 INFO L93 Difference]: Finished difference Result 699 states and 740 transitions. [2018-01-31 09:00:03,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-31 09:00:03,766 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 581 [2018-01-31 09:00:03,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:00:03,767 INFO L225 Difference]: With dead ends: 699 [2018-01-31 09:00:03,767 INFO L226 Difference]: Without dead ends: 428 [2018-01-31 09:00:03,767 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 567 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=243, Invalid=459, Unknown=0, NotChecked=0, Total=702 [2018-01-31 09:00:03,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2018-01-31 09:00:03,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 421. [2018-01-31 09:00:03,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2018-01-31 09:00:03,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 438 transitions. [2018-01-31 09:00:03,772 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 438 transitions. Word has length 581 [2018-01-31 09:00:03,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:00:03,772 INFO L432 AbstractCegarLoop]: Abstraction has 421 states and 438 transitions. [2018-01-31 09:00:03,772 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-31 09:00:03,773 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 438 transitions. [2018-01-31 09:00:03,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2018-01-31 09:00:03,776 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:00:03,776 INFO L351 BasicCegarLoop]: trace histogram [51, 48, 48, 48, 48, 30, 18, 18, 18, 18, 18, 16, 15, 15, 15, 15, 15, 15, 15, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:00:03,776 INFO L371 AbstractCegarLoop]: === Iteration 38 === [mainErr0AssertViolation]=== [2018-01-31 09:00:03,776 INFO L82 PathProgramCache]: Analyzing trace with hash -706581182, now seen corresponding path program 28 times [2018-01-31 09:00:03,776 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:00:03,776 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:00:03,777 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:00:03,777 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:00:03,777 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:00:03,785 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:00:03,786 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:00:03,786 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-31 09:00:03,791 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:00:03,838 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:00:03,842 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:00:04,220 INFO L134 CoverageAnalysis]: Checked inductivity of 8706 backedges. 2439 proven. 300 refuted. 0 times theorem prover too weak. 5967 trivial. 0 not checked. [2018-01-31 09:00:04,237 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:00:04,238 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-01-31 09:00:04,238 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-31 09:00:04,238 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-31 09:00:04,238 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2018-01-31 09:00:04,238 INFO L87 Difference]: Start difference. First operand 421 states and 438 transitions. Second operand 23 states. [2018-01-31 09:00:04,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:00:04,508 INFO L93 Difference]: Finished difference Result 708 states and 749 transitions. [2018-01-31 09:00:04,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-01-31 09:00:04,509 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 611 [2018-01-31 09:00:04,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:00:04,510 INFO L225 Difference]: With dead ends: 708 [2018-01-31 09:00:04,510 INFO L226 Difference]: Without dead ends: 427 [2018-01-31 09:00:04,511 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 589 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=603, Invalid=1203, Unknown=0, NotChecked=0, Total=1806 [2018-01-31 09:00:04,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2018-01-31 09:00:04,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2018-01-31 09:00:04,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2018-01-31 09:00:04,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 444 transitions. [2018-01-31 09:00:04,515 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 444 transitions. Word has length 611 [2018-01-31 09:00:04,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:00:04,516 INFO L432 AbstractCegarLoop]: Abstraction has 427 states and 444 transitions. [2018-01-31 09:00:04,516 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-31 09:00:04,516 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 444 transitions. [2018-01-31 09:00:04,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2018-01-31 09:00:04,518 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:00:04,518 INFO L351 BasicCegarLoop]: trace histogram [54, 51, 51, 51, 51, 33, 18, 18, 18, 18, 18, 16, 15, 15, 15, 15, 15, 15, 15, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:00:04,518 INFO L371 AbstractCegarLoop]: === Iteration 39 === [mainErr0AssertViolation]=== [2018-01-31 09:00:04,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1488424026, now seen corresponding path program 29 times [2018-01-31 09:00:04,519 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:00:04,519 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:00:04,519 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:00:04,519 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:00:04,519 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:00:04,528 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:00:04,528 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:00:04,528 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:00:04,544 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 09:00:04,559 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:04,560 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:04,561 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:04,562 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:04,564 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:04,566 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:04,568 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:04,571 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:04,573 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:04,576 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:04,580 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:04,586 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:04,592 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:04,603 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:04,618 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:04,683 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:04,827 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:05,149 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:05,151 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:00:05,156 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:00:05,367 INFO L134 CoverageAnalysis]: Checked inductivity of 9606 backedges. 4358 proven. 268 refuted. 0 times theorem prover too weak. 4980 trivial. 0 not checked. [2018-01-31 09:00:05,386 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:00:05,386 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-01-31 09:00:05,387 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-31 09:00:05,387 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-31 09:00:05,387 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-31 09:00:05,387 INFO L87 Difference]: Start difference. First operand 427 states and 444 transitions. Second operand 21 states. [2018-01-31 09:00:05,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:00:05,581 INFO L93 Difference]: Finished difference Result 744 states and 790 transitions. [2018-01-31 09:00:05,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-01-31 09:00:05,581 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 629 [2018-01-31 09:00:05,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:00:05,582 INFO L225 Difference]: With dead ends: 744 [2018-01-31 09:00:05,582 INFO L226 Difference]: Without dead ends: 457 [2018-01-31 09:00:05,583 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 646 GetRequests, 609 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=498, Invalid=984, Unknown=0, NotChecked=0, Total=1482 [2018-01-31 09:00:05,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2018-01-31 09:00:05,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 457. [2018-01-31 09:00:05,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2018-01-31 09:00:05,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 477 transitions. [2018-01-31 09:00:05,587 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 477 transitions. Word has length 629 [2018-01-31 09:00:05,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:00:05,587 INFO L432 AbstractCegarLoop]: Abstraction has 457 states and 477 transitions. [2018-01-31 09:00:05,587 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-31 09:00:05,587 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 477 transitions. [2018-01-31 09:00:05,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 720 [2018-01-31 09:00:05,590 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:00:05,590 INFO L351 BasicCegarLoop]: trace histogram [63, 60, 60, 60, 60, 33, 27, 27, 27, 27, 27, 16, 15, 15, 15, 15, 15, 15, 15, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:00:05,591 INFO L371 AbstractCegarLoop]: === Iteration 40 === [mainErr0AssertViolation]=== [2018-01-31 09:00:05,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1942570582, now seen corresponding path program 30 times [2018-01-31 09:00:05,591 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:00:05,591 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:00:05,591 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:00:05,591 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:00:05,591 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:00:05,601 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:00:05,602 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:00:05,602 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:00:05,618 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 09:00:05,636 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:00:05,639 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:00:05,643 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:00:05,646 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:00:05,652 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:00:05,663 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:00:05,675 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:00:05,691 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:00:06,122 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:00:06,184 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:00:06,337 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:00:06,417 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:00:06,868 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:00:07,559 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:00:07,589 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:00:07,591 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:00:07,595 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:00:07,798 INFO L134 CoverageAnalysis]: Checked inductivity of 13422 backedges. 5746 proven. 132 refuted. 0 times theorem prover too weak. 7544 trivial. 0 not checked. [2018-01-31 09:00:07,816 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:00:07,816 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-01-31 09:00:07,816 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-01-31 09:00:07,816 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-01-31 09:00:07,816 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2018-01-31 09:00:07,816 INFO L87 Difference]: Start difference. First operand 457 states and 477 transitions. Second operand 18 states. [2018-01-31 09:00:08,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:00:08,067 INFO L93 Difference]: Finished difference Result 664 states and 697 transitions. [2018-01-31 09:00:08,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-01-31 09:00:08,067 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 719 [2018-01-31 09:00:08,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:00:08,068 INFO L225 Difference]: With dead ends: 664 [2018-01-31 09:00:08,068 INFO L226 Difference]: Without dead ends: 483 [2018-01-31 09:00:08,069 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 702 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=260, Invalid=732, Unknown=0, NotChecked=0, Total=992 [2018-01-31 09:00:08,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2018-01-31 09:00:08,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 473. [2018-01-31 09:00:08,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2018-01-31 09:00:08,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 493 transitions. [2018-01-31 09:00:08,073 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 493 transitions. Word has length 719 [2018-01-31 09:00:08,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:00:08,073 INFO L432 AbstractCegarLoop]: Abstraction has 473 states and 493 transitions. [2018-01-31 09:00:08,073 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-01-31 09:00:08,073 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 493 transitions. [2018-01-31 09:00:08,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2018-01-31 09:00:08,076 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:00:08,076 INFO L351 BasicCegarLoop]: trace histogram [63, 60, 60, 60, 60, 33, 27, 27, 27, 27, 27, 16, 15, 15, 15, 15, 15, 15, 15, 8, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:00:08,077 INFO L371 AbstractCegarLoop]: === Iteration 41 === [mainErr0AssertViolation]=== [2018-01-31 09:00:08,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1131215603, now seen corresponding path program 31 times [2018-01-31 09:00:08,077 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:00:08,077 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:00:08,077 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:00:08,077 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:00:08,077 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:00:08,086 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:00:08,086 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:00:08,086 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:00:08,098 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:00:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:00:08,166 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:00:08,517 INFO L134 CoverageAnalysis]: Checked inductivity of 13472 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 12602 trivial. 0 not checked. [2018-01-31 09:00:08,538 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:00:08,539 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-01-31 09:00:08,539 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-31 09:00:08,539 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-31 09:00:08,539 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2018-01-31 09:00:08,539 INFO L87 Difference]: Start difference. First operand 473 states and 493 transitions. Second operand 33 states. [2018-01-31 09:00:08,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:00:08,924 INFO L93 Difference]: Finished difference Result 826 states and 866 transitions. [2018-01-31 09:00:08,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-01-31 09:00:08,924 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 727 [2018-01-31 09:00:08,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:00:08,926 INFO L225 Difference]: With dead ends: 826 [2018-01-31 09:00:08,926 INFO L226 Difference]: Without dead ends: 486 [2018-01-31 09:00:08,927 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 756 GetRequests, 695 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1278, Invalid=2628, Unknown=0, NotChecked=0, Total=3906 [2018-01-31 09:00:08,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2018-01-31 09:00:08,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 481. [2018-01-31 09:00:08,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2018-01-31 09:00:08,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 501 transitions. [2018-01-31 09:00:08,932 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 501 transitions. Word has length 727 [2018-01-31 09:00:08,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:00:08,932 INFO L432 AbstractCegarLoop]: Abstraction has 481 states and 501 transitions. [2018-01-31 09:00:08,932 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-31 09:00:08,932 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 501 transitions. [2018-01-31 09:00:08,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 736 [2018-01-31 09:00:08,936 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:00:08,936 INFO L351 BasicCegarLoop]: trace histogram [63, 60, 60, 60, 60, 33, 27, 27, 27, 27, 27, 17, 16, 16, 16, 16, 16, 16, 16, 8, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:00:08,936 INFO L371 AbstractCegarLoop]: === Iteration 42 === [mainErr0AssertViolation]=== [2018-01-31 09:00:08,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1226100854, now seen corresponding path program 32 times [2018-01-31 09:00:08,936 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:00:08,936 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:00:08,937 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:00:08,937 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:00:08,937 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:00:08,946 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:00:08,946 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:00:08,946 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-31 09:00:08,964 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:00:08,982 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:09,020 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:09,029 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:00:09,033 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:00:09,388 INFO L134 CoverageAnalysis]: Checked inductivity of 13594 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 12602 trivial. 0 not checked. [2018-01-31 09:00:09,405 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:00:09,405 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-01-31 09:00:09,406 INFO L409 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-01-31 09:00:09,406 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-01-31 09:00:09,406 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2018-01-31 09:00:09,406 INFO L87 Difference]: Start difference. First operand 481 states and 501 transitions. Second operand 35 states. [2018-01-31 09:00:09,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:00:09,980 INFO L93 Difference]: Finished difference Result 834 states and 874 transitions. [2018-01-31 09:00:09,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-01-31 09:00:09,982 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 735 [2018-01-31 09:00:09,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:00:09,983 INFO L225 Difference]: With dead ends: 834 [2018-01-31 09:00:09,983 INFO L226 Difference]: Without dead ends: 494 [2018-01-31 09:00:09,984 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 766 GetRequests, 701 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1443, Invalid=2979, Unknown=0, NotChecked=0, Total=4422 [2018-01-31 09:00:09,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2018-01-31 09:00:09,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 489. [2018-01-31 09:00:09,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2018-01-31 09:00:09,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 509 transitions. [2018-01-31 09:00:09,989 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 509 transitions. Word has length 735 [2018-01-31 09:00:09,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:00:09,989 INFO L432 AbstractCegarLoop]: Abstraction has 489 states and 509 transitions. [2018-01-31 09:00:09,989 INFO L433 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-01-31 09:00:09,989 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 509 transitions. [2018-01-31 09:00:09,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 744 [2018-01-31 09:00:09,992 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:00:09,992 INFO L351 BasicCegarLoop]: trace histogram [63, 60, 60, 60, 60, 33, 27, 27, 27, 27, 27, 18, 17, 17, 17, 17, 17, 17, 17, 8, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:00:09,992 INFO L371 AbstractCegarLoop]: === Iteration 43 === [mainErr0AssertViolation]=== [2018-01-31 09:00:09,992 INFO L82 PathProgramCache]: Analyzing trace with hash -659741985, now seen corresponding path program 33 times [2018-01-31 09:00:09,993 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:00:09,993 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:00:09,993 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:00:09,993 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:00:09,993 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:00:10,003 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:00:10,003 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:00:10,003 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-31 09:00:10,021 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:00:10,039 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:00:10,044 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:00:10,093 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:00:10,110 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:00:10,367 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:00:10,391 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:00:10,485 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:00:10,573 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:00:11,434 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:00:11,436 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:00:11,440 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:00:11,662 INFO L134 CoverageAnalysis]: Checked inductivity of 13724 backedges. 5632 proven. 182 refuted. 0 times theorem prover too weak. 7910 trivial. 0 not checked. [2018-01-31 09:00:11,681 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:00:11,681 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-01-31 09:00:11,681 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-31 09:00:11,681 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-31 09:00:11,681 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2018-01-31 09:00:11,681 INFO L87 Difference]: Start difference. First operand 489 states and 509 transitions. Second operand 17 states. [2018-01-31 09:00:11,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:00:11,821 INFO L93 Difference]: Finished difference Result 696 states and 729 transitions. [2018-01-31 09:00:11,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-31 09:00:11,822 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 743 [2018-01-31 09:00:11,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:00:11,823 INFO L225 Difference]: With dead ends: 696 [2018-01-31 09:00:11,823 INFO L226 Difference]: Without dead ends: 515 [2018-01-31 09:00:11,824 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 756 GetRequests, 727 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=318, Invalid=612, Unknown=0, NotChecked=0, Total=930 [2018-01-31 09:00:11,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2018-01-31 09:00:11,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 505. [2018-01-31 09:00:11,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2018-01-31 09:00:11,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 525 transitions. [2018-01-31 09:00:11,830 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 525 transitions. Word has length 743 [2018-01-31 09:00:11,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:00:11,830 INFO L432 AbstractCegarLoop]: Abstraction has 505 states and 525 transitions. [2018-01-31 09:00:11,830 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-31 09:00:11,830 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 525 transitions. [2018-01-31 09:00:11,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2018-01-31 09:00:11,835 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:00:11,835 INFO L351 BasicCegarLoop]: trace histogram [63, 60, 60, 60, 60, 33, 27, 27, 27, 27, 27, 18, 17, 17, 17, 17, 17, 17, 17, 9, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:00:11,835 INFO L371 AbstractCegarLoop]: === Iteration 44 === [mainErr0AssertViolation]=== [2018-01-31 09:00:11,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1233500010, now seen corresponding path program 34 times [2018-01-31 09:00:11,835 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:00:11,835 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:00:11,836 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:00:11,836 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:00:11,836 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:00:11,848 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:00:11,848 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:00:11,848 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:00:11,864 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 09:00:12,366 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:00:12,371 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:00:12,769 INFO L134 CoverageAnalysis]: Checked inductivity of 13782 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 12660 trivial. 0 not checked. [2018-01-31 09:00:12,790 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:00:12,790 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-01-31 09:00:12,791 INFO L409 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-01-31 09:00:12,791 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-01-31 09:00:12,791 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2018-01-31 09:00:12,791 INFO L87 Difference]: Start difference. First operand 505 states and 525 transitions. Second operand 37 states. [2018-01-31 09:00:13,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:00:13,199 INFO L93 Difference]: Finished difference Result 874 states and 914 transitions. [2018-01-31 09:00:13,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-01-31 09:00:13,200 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 751 [2018-01-31 09:00:13,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:00:13,201 INFO L225 Difference]: With dead ends: 874 [2018-01-31 09:00:13,201 INFO L226 Difference]: Without dead ends: 518 [2018-01-31 09:00:13,203 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 715 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1618, Invalid=3352, Unknown=0, NotChecked=0, Total=4970 [2018-01-31 09:00:13,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2018-01-31 09:00:13,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 513. [2018-01-31 09:00:13,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2018-01-31 09:00:13,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 533 transitions. [2018-01-31 09:00:13,208 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 533 transitions. Word has length 751 [2018-01-31 09:00:13,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:00:13,208 INFO L432 AbstractCegarLoop]: Abstraction has 513 states and 533 transitions. [2018-01-31 09:00:13,208 INFO L433 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-01-31 09:00:13,208 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 533 transitions. [2018-01-31 09:00:13,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 760 [2018-01-31 09:00:13,211 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:00:13,211 INFO L351 BasicCegarLoop]: trace histogram [63, 60, 60, 60, 60, 33, 27, 27, 27, 27, 27, 19, 18, 18, 18, 18, 18, 18, 18, 9, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:00:13,211 INFO L371 AbstractCegarLoop]: === Iteration 45 === [mainErr0AssertViolation]=== [2018-01-31 09:00:13,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1797609217, now seen corresponding path program 35 times [2018-01-31 09:00:13,212 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:00:13,212 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:00:13,212 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:00:13,212 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:00:13,212 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:00:13,222 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:00:13,222 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:00:13,222 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:00:13,241 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 09:00:13,256 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:13,257 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:13,258 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:13,259 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:13,261 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:13,263 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:13,266 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:13,268 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:13,271 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:13,274 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:13,280 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:13,285 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:13,290 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:13,297 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:13,309 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:13,328 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:13,413 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:13,538 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:13,710 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:14,101 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:15,592 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:27,050 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:27,057 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:00:27,067 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:00:27,295 INFO L134 CoverageAnalysis]: Checked inductivity of 13920 backedges. 5632 proven. 240 refuted. 0 times theorem prover too weak. 8048 trivial. 0 not checked. [2018-01-31 09:00:27,317 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:00:27,317 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-01-31 09:00:27,318 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-31 09:00:27,318 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-31 09:00:27,318 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-01-31 09:00:27,318 INFO L87 Difference]: Start difference. First operand 513 states and 533 transitions. Second operand 19 states. [2018-01-31 09:00:27,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:00:27,478 INFO L93 Difference]: Finished difference Result 720 states and 753 transitions. [2018-01-31 09:00:27,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-31 09:00:27,479 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 759 [2018-01-31 09:00:27,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:00:27,480 INFO L225 Difference]: With dead ends: 720 [2018-01-31 09:00:27,480 INFO L226 Difference]: Without dead ends: 539 [2018-01-31 09:00:27,480 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 741 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=403, Invalid=787, Unknown=0, NotChecked=0, Total=1190 [2018-01-31 09:00:27,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2018-01-31 09:00:27,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 529. [2018-01-31 09:00:27,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 529 states. [2018-01-31 09:00:27,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 549 transitions. [2018-01-31 09:00:27,485 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 549 transitions. Word has length 759 [2018-01-31 09:00:27,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:00:27,485 INFO L432 AbstractCegarLoop]: Abstraction has 529 states and 549 transitions. [2018-01-31 09:00:27,485 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-31 09:00:27,486 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 549 transitions. [2018-01-31 09:00:27,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2018-01-31 09:00:27,489 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:00:27,489 INFO L351 BasicCegarLoop]: trace histogram [63, 60, 60, 60, 60, 33, 27, 27, 27, 27, 27, 19, 18, 18, 18, 18, 18, 18, 18, 10, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:00:27,489 INFO L371 AbstractCegarLoop]: === Iteration 46 === [mainErr0AssertViolation]=== [2018-01-31 09:00:27,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1347399350, now seen corresponding path program 36 times [2018-01-31 09:00:27,489 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:00:27,489 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:00:27,490 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:00:27,490 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:00:27,490 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:00:27,500 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:00:27,500 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:00:27,500 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-31 09:00:27,518 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:00:27,536 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:00:27,538 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:00:27,542 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:00:27,546 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:00:27,553 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:00:27,567 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:00:27,597 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:00:27,631 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:00:27,661 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:00:27,686 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:00:27,728 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:00:27,790 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:00:27,848 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:00:28,082 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:00:28,146 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:00:28,257 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:00:28,366 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:00:28,544 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:00:36,047 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:00:37,613 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:00:48,506 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:00:48,510 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:00:48,518 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:00:48,773 INFO L134 CoverageAnalysis]: Checked inductivity of 13986 backedges. 5770 proven. 306 refuted. 0 times theorem prover too weak. 7910 trivial. 0 not checked. [2018-01-31 09:00:48,792 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:00:48,793 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-01-31 09:00:48,793 INFO L409 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-01-31 09:00:48,793 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-01-31 09:00:48,793 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2018-01-31 09:00:48,793 INFO L87 Difference]: Start difference. First operand 529 states and 549 transitions. Second operand 24 states. [2018-01-31 09:00:49,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:00:49,078 INFO L93 Difference]: Finished difference Result 736 states and 769 transitions. [2018-01-31 09:00:49,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-01-31 09:00:49,079 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 767 [2018-01-31 09:00:49,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:00:49,080 INFO L225 Difference]: With dead ends: 736 [2018-01-31 09:00:49,080 INFO L226 Difference]: Without dead ends: 555 [2018-01-31 09:00:49,080 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 786 GetRequests, 744 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=515, Invalid=1377, Unknown=0, NotChecked=0, Total=1892 [2018-01-31 09:00:49,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2018-01-31 09:00:49,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 545. [2018-01-31 09:00:49,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2018-01-31 09:00:49,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 565 transitions. [2018-01-31 09:00:49,085 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 565 transitions. Word has length 767 [2018-01-31 09:00:49,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:00:49,085 INFO L432 AbstractCegarLoop]: Abstraction has 545 states and 565 transitions. [2018-01-31 09:00:49,086 INFO L433 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-01-31 09:00:49,086 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 565 transitions. [2018-01-31 09:00:49,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2018-01-31 09:00:49,089 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:00:49,089 INFO L351 BasicCegarLoop]: trace histogram [63, 60, 60, 60, 60, 33, 27, 27, 27, 27, 27, 19, 18, 18, 18, 18, 18, 18, 18, 11, 10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:00:49,089 INFO L371 AbstractCegarLoop]: === Iteration 47 === [mainErr0AssertViolation]=== [2018-01-31 09:00:49,089 INFO L82 PathProgramCache]: Analyzing trace with hash 433786221, now seen corresponding path program 37 times [2018-01-31 09:00:49,089 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:00:49,090 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:00:49,090 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:00:49,090 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:00:49,090 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:00:49,099 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:00:49,100 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:00:49,100 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:00:49,115 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:00:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:00:49,186 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:00:49,656 INFO L134 CoverageAnalysis]: Checked inductivity of 14060 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 12800 trivial. 0 not checked. [2018-01-31 09:00:49,673 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:00:49,673 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-01-31 09:00:49,673 INFO L409 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-01-31 09:00:49,673 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-01-31 09:00:49,673 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2018-01-31 09:00:49,674 INFO L87 Difference]: Start difference. First operand 545 states and 565 transitions. Second operand 39 states. [2018-01-31 09:00:50,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:00:50,117 INFO L93 Difference]: Finished difference Result 946 states and 986 transitions. [2018-01-31 09:00:50,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-01-31 09:00:50,118 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 775 [2018-01-31 09:00:50,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:00:50,119 INFO L225 Difference]: With dead ends: 946 [2018-01-31 09:00:50,119 INFO L226 Difference]: Without dead ends: 558 [2018-01-31 09:00:50,120 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 810 GetRequests, 737 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1803, Invalid=3747, Unknown=0, NotChecked=0, Total=5550 [2018-01-31 09:00:50,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2018-01-31 09:00:50,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 553. [2018-01-31 09:00:50,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2018-01-31 09:00:50,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 573 transitions. [2018-01-31 09:00:50,125 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 573 transitions. Word has length 775 [2018-01-31 09:00:50,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:00:50,125 INFO L432 AbstractCegarLoop]: Abstraction has 553 states and 573 transitions. [2018-01-31 09:00:50,125 INFO L433 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-01-31 09:00:50,125 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 573 transitions. [2018-01-31 09:00:50,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 784 [2018-01-31 09:00:50,129 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:00:50,129 INFO L351 BasicCegarLoop]: trace histogram [63, 60, 60, 60, 60, 33, 27, 27, 27, 27, 27, 20, 19, 19, 19, 19, 19, 19, 19, 11, 10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:00:50,130 INFO L371 AbstractCegarLoop]: === Iteration 48 === [mainErr0AssertViolation]=== [2018-01-31 09:00:50,130 INFO L82 PathProgramCache]: Analyzing trace with hash 753599190, now seen corresponding path program 38 times [2018-01-31 09:00:50,130 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:00:50,130 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:00:50,130 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:00:50,131 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:00:50,131 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:00:50,142 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:00:50,143 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:00:50,143 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-31 09:00:50,157 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:00:50,176 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:50,219 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:00:50,228 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:00:50,232 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:00:50,669 INFO L134 CoverageAnalysis]: Checked inductivity of 14206 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 12800 trivial. 0 not checked. [2018-01-31 09:00:50,688 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:00:50,688 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-01-31 09:00:50,688 INFO L409 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-01-31 09:00:50,688 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-01-31 09:00:50,689 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2018-01-31 09:00:50,689 INFO L87 Difference]: Start difference. First operand 553 states and 573 transitions. Second operand 41 states. [2018-01-31 09:00:51,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:00:51,206 INFO L93 Difference]: Finished difference Result 949 states and 989 transitions. [2018-01-31 09:00:51,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-01-31 09:00:51,224 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 783 [2018-01-31 09:00:51,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:00:51,225 INFO L225 Difference]: With dead ends: 949 [2018-01-31 09:00:51,225 INFO L226 Difference]: Without dead ends: 561 [2018-01-31 09:00:51,226 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 820 GetRequests, 743 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1045 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1998, Invalid=4164, Unknown=0, NotChecked=0, Total=6162 [2018-01-31 09:00:51,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2018-01-31 09:00:51,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2018-01-31 09:00:51,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2018-01-31 09:00:51,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 581 transitions. [2018-01-31 09:00:51,231 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 581 transitions. Word has length 783 [2018-01-31 09:00:51,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:00:51,231 INFO L432 AbstractCegarLoop]: Abstraction has 561 states and 581 transitions. [2018-01-31 09:00:51,231 INFO L433 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-01-31 09:00:51,232 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 581 transitions. [2018-01-31 09:00:51,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2018-01-31 09:00:51,240 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:00:51,240 INFO L351 BasicCegarLoop]: trace histogram [63, 60, 60, 60, 60, 33, 27, 27, 27, 27, 27, 21, 20, 20, 20, 20, 20, 20, 20, 11, 10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:00:51,240 INFO L371 AbstractCegarLoop]: === Iteration 49 === [mainErr0AssertViolation]=== [2018-01-31 09:00:51,240 INFO L82 PathProgramCache]: Analyzing trace with hash 256343871, now seen corresponding path program 39 times [2018-01-31 09:00:51,240 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:00:51,241 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:00:51,241 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:00:51,241 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:00:51,241 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:00:51,250 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:00:51,253 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:00:51,253 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-31 09:00:51,267 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:00:51,288 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:00:51,293 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:00:51,300 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:00:51,317 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:00:51,340 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:00:51,427 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:00:51,555 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:00:54,285 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown