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/rangesum60_false-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-5f7ec6e-m [2018-01-31 09:04:58,890 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-31 09:04:58,891 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-31 09:04:58,903 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-31 09:04:58,903 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-31 09:04:58,903 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-31 09:04:58,904 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-31 09:04:58,905 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-31 09:04:58,906 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-31 09:04:58,906 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-31 09:04:58,907 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-31 09:04:58,907 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-31 09:04:58,909 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-31 09:04:58,909 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-31 09:04:58,910 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-31 09:04:58,911 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-31 09:04:58,912 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-31 09:04:58,913 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-31 09:04:58,914 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-31 09:04:58,921 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-31 09:04:58,922 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-31 09:04:58,922 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-31 09:04:58,922 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-31 09:04:58,923 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-31 09:04:58,923 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-31 09:04:58,924 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-31 09:04:58,924 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-31 09:04:58,926 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-31 09:04:58,926 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-31 09:04:58,926 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-31 09:04:58,926 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-31 09:04:58,927 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 09:04:58,935 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-31 09:04:58,935 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-31 09:04:58,935 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-31 09:04:58,935 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-31 09:04:58,935 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-31 09:04:58,936 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-31 09:04:58,936 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-31 09:04:58,936 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-31 09:04:58,936 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-31 09:04:58,936 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-31 09:04:58,936 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-31 09:04:58,937 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-31 09:04:58,937 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-31 09:04:58,937 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-31 09:04:58,937 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-31 09:04:58,937 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-31 09:04:58,937 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-31 09:04:58,937 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-31 09:04:58,941 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-31 09:04:58,942 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-31 09:04:58,942 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-31 09:04:58,942 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-31 09:04:58,942 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-31 09:04:58,942 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 09:04:58,942 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-31 09:04:58,942 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-31 09:04:58,942 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-31 09:04:58,942 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-31 09:04:58,942 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-31 09:04:58,943 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-31 09:04:58,943 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-31 09:04:58,943 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-31 09:04:58,943 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-31 09:04:58,943 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-31 09:04:58,973 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-31 09:04:58,984 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-31 09:04:58,987 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-31 09:04:58,988 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-31 09:04:58,989 INFO L276 PluginConnector]: CDTParser initialized [2018-01-31 09:04:58,989 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/rangesum60_false-unreach-call.i [2018-01-31 09:04:59,059 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-31 09:04:59,059 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-31 09:04:59,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-31 09:04:59,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-31 09:04:59,064 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-31 09:04:59,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:04:59" (1/1) ... [2018-01-31 09:04:59,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@116486b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:04:59, skipping insertion in model container [2018-01-31 09:04:59,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:04:59" (1/1) ... [2018-01-31 09:04:59,075 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 09:04:59,084 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 09:04:59,162 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 09:04:59,175 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 09:04:59,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:04:59 WrapperNode [2018-01-31 09:04:59,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-31 09:04:59,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-31 09:04:59,179 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-31 09:04:59,179 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-31 09:04:59,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:04:59" (1/1) ... [2018-01-31 09:04:59,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:04:59" (1/1) ... [2018-01-31 09:04:59,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:04:59" (1/1) ... [2018-01-31 09:04:59,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:04:59" (1/1) ... [2018-01-31 09:04:59,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:04:59" (1/1) ... [2018-01-31 09:04:59,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:04:59" (1/1) ... [2018-01-31 09:04:59,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:04:59" (1/1) ... [2018-01-31 09:04:59,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-31 09:04:59,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-31 09:04:59,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-31 09:04:59,199 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-31 09:04:59,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:04:59" (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 09:04:59,236 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-31 09:04:59,236 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-31 09:04:59,236 INFO L136 BoogieDeclarations]: Found implementation of procedure init_nondet [2018-01-31 09:04:59,236 INFO L136 BoogieDeclarations]: Found implementation of procedure rangesum [2018-01-31 09:04:59,236 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-31 09:04:59,236 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-31 09:04:59,237 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-31 09:04:59,237 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-31 09:04:59,237 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-31 09:04:59,237 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-31 09:04:59,237 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-31 09:04:59,237 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-31 09:04:59,237 INFO L128 BoogieDeclarations]: Found specification of procedure init_nondet [2018-01-31 09:04:59,237 INFO L128 BoogieDeclarations]: Found specification of procedure rangesum [2018-01-31 09:04:59,237 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-31 09:04:59,237 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-31 09:04:59,238 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-31 09:04:59,634 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-31 09:04:59,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:04:59 BoogieIcfgContainer [2018-01-31 09:04:59,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-31 09:04:59,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-31 09:04:59,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-31 09:04:59,637 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-31 09:04:59,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 09:04:59" (1/3) ... [2018-01-31 09:04:59,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d1fc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:04:59, skipping insertion in model container [2018-01-31 09:04:59,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:04:59" (2/3) ... [2018-01-31 09:04:59,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d1fc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:04:59, skipping insertion in model container [2018-01-31 09:04:59,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:04:59" (3/3) ... [2018-01-31 09:04:59,639 INFO L107 eAbstractionObserver]: Analyzing ICFG rangesum60_false-unreach-call.i [2018-01-31 09:04:59,644 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-31 09:04:59,648 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-31 09:04:59,680 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-31 09:04:59,680 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-31 09:04:59,680 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-31 09:04:59,680 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-31 09:04:59,680 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-31 09:04:59,680 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-31 09:04:59,680 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-31 09:04:59,680 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-31 09:04:59,681 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-31 09:04:59,690 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2018-01-31 09:04:59,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-01-31 09:04:59,695 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:04:59,695 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 09:04:59,696 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0AssertViolation]=== [2018-01-31 09:04:59,698 INFO L82 PathProgramCache]: Analyzing trace with hash 540696337, now seen corresponding path program 1 times [2018-01-31 09:04:59,699 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:04:59,699 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:04:59,727 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:59,727 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:04:59,728 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:04:59,762 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:04:59,780 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-01-31 09:04:59,781 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:04:59,781 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 09:04:59,795 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 09:04:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:04:59,833 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:04:59,859 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 09:04:59,876 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:04:59,876 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-31 09:04:59,877 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-31 09:04:59,884 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-31 09:04:59,885 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-31 09:04:59,886 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 2 states. [2018-01-31 09:04:59,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:04:59,903 INFO L93 Difference]: Finished difference Result 157 states and 178 transitions. [2018-01-31 09:04:59,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-31 09:04:59,904 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 78 [2018-01-31 09:04:59,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:04:59,909 INFO L225 Difference]: With dead ends: 157 [2018-01-31 09:04:59,909 INFO L226 Difference]: Without dead ends: 81 [2018-01-31 09:04:59,911 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 09:04:59,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-01-31 09:04:59,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-01-31 09:04:59,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-01-31 09:04:59,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2018-01-31 09:04:59,996 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 78 [2018-01-31 09:04:59,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:04:59,996 INFO L432 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2018-01-31 09:04:59,996 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-31 09:04:59,997 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2018-01-31 09:04:59,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-01-31 09:04:59,999 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:04:59,999 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 09:04:59,999 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0AssertViolation]=== [2018-01-31 09:04:59,999 INFO L82 PathProgramCache]: Analyzing trace with hash -199678615, now seen corresponding path program 1 times [2018-01-31 09:04:59,999 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:04:59,999 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:05:00,000 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:00,000 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:05:00,000 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:05:00,010 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:05:00,041 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-01-31 09:05:00,041 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:05:00,041 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) [2018-01-31 09:05:00,048 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:05:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:05:00,086 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:05:00,142 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 09:05:00,161 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:05:00,161 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-31 09:05:00,162 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-31 09:05:00,162 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-31 09:05:00,162 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 09:05:00,162 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand 3 states. [2018-01-31 09:05:00,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:05:00,274 INFO L93 Difference]: Finished difference Result 150 states and 162 transitions. [2018-01-31 09:05:00,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-31 09:05:00,282 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2018-01-31 09:05:00,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:05:00,283 INFO L225 Difference]: With dead ends: 150 [2018-01-31 09:05:00,283 INFO L226 Difference]: Without dead ends: 88 [2018-01-31 09:05:00,283 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 09:05:00,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-01-31 09:05:00,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 83. [2018-01-31 09:05:00,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-01-31 09:05:00,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2018-01-31 09:05:00,295 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 83 [2018-01-31 09:05:00,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:05:00,295 INFO L432 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2018-01-31 09:05:00,295 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-31 09:05:00,295 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2018-01-31 09:05:00,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-01-31 09:05:00,297 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:05:00,297 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 09:05:00,297 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0AssertViolation]=== [2018-01-31 09:05:00,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1465441618, now seen corresponding path program 1 times [2018-01-31 09:05:00,297 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:05:00,298 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:05:00,299 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:00,299 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:05:00,299 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:05:00,316 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:05:00,354 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-01-31 09:05:00,354 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:05:00,354 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) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:05:00,360 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:05:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:05:00,403 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:05:00,456 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 09:05:00,474 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:05:00,474 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-31 09:05:00,475 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-31 09:05:00,475 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-31 09:05:00,475 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 09:05:00,475 INFO L87 Difference]: Start difference. First operand 83 states and 89 transitions. Second operand 3 states. [2018-01-31 09:05:00,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:05:00,980 INFO L93 Difference]: Finished difference Result 151 states and 169 transitions. [2018-01-31 09:05:00,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-31 09:05:00,991 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2018-01-31 09:05:00,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:05:00,993 INFO L225 Difference]: With dead ends: 151 [2018-01-31 09:05:00,993 INFO L226 Difference]: Without dead ends: 96 [2018-01-31 09:05:00,993 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 09:05:00,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-01-31 09:05:00,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2018-01-31 09:05:00,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-01-31 09:05:00,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 98 transitions. [2018-01-31 09:05:00,999 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 98 transitions. Word has length 91 [2018-01-31 09:05:00,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:05:00,999 INFO L432 AbstractCegarLoop]: Abstraction has 90 states and 98 transitions. [2018-01-31 09:05:00,999 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-31 09:05:00,999 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 98 transitions. [2018-01-31 09:05:01,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-01-31 09:05:01,001 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:05:01,001 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 09:05:01,001 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0AssertViolation]=== [2018-01-31 09:05:01,002 INFO L82 PathProgramCache]: Analyzing trace with hash 280349970, now seen corresponding path program 1 times [2018-01-31 09:05:01,002 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:05:01,002 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:05:01,002 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:01,002 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:05:01,002 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:05:01,018 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:05:01,144 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 09:05:01,145 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:05:01,145 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) [2018-01-31 09:05:01,157 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:05:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:05:01,191 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:05:01,220 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 09:05:01,240 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:05:01,240 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-31 09:05:01,240 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 09:05:01,240 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 09:05:01,241 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-31 09:05:01,241 INFO L87 Difference]: Start difference. First operand 90 states and 98 transitions. Second operand 6 states. [2018-01-31 09:05:01,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:05:01,405 INFO L93 Difference]: Finished difference Result 177 states and 198 transitions. [2018-01-31 09:05:01,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 09:05:01,407 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 91 [2018-01-31 09:05:01,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:05:01,407 INFO L225 Difference]: With dead ends: 177 [2018-01-31 09:05:01,408 INFO L226 Difference]: Without dead ends: 108 [2018-01-31 09:05:01,408 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 09:05:01,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-01-31 09:05:01,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 101. [2018-01-31 09:05:01,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-01-31 09:05:01,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2018-01-31 09:05:01,412 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 91 [2018-01-31 09:05:01,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:05:01,412 INFO L432 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2018-01-31 09:05:01,413 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 09:05:01,413 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2018-01-31 09:05:01,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-01-31 09:05:01,414 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:05:01,414 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 09:05:01,414 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0AssertViolation]=== [2018-01-31 09:05:01,414 INFO L82 PathProgramCache]: Analyzing trace with hash -253115437, now seen corresponding path program 1 times [2018-01-31 09:05:01,414 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:05:01,414 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:05:01,415 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:01,415 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:05:01,415 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:05:01,429 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:05:01,520 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 09:05:01,520 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:05:01,520 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 09:05:01,525 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 09:05:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:05:01,560 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:05:01,653 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 09:05:01,674 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:05:01,674 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-31 09:05:01,675 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 09:05:01,675 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 09:05:01,675 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-31 09:05:01,675 INFO L87 Difference]: Start difference. First operand 101 states and 109 transitions. Second operand 6 states. [2018-01-31 09:05:01,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:05:01,835 INFO L93 Difference]: Finished difference Result 181 states and 201 transitions. [2018-01-31 09:05:01,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 09:05:01,836 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2018-01-31 09:05:01,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:05:01,837 INFO L225 Difference]: With dead ends: 181 [2018-01-31 09:05:01,837 INFO L226 Difference]: Without dead ends: 116 [2018-01-31 09:05:01,838 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 117 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 09:05:01,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-01-31 09:05:01,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 109. [2018-01-31 09:05:01,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-01-31 09:05:01,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 117 transitions. [2018-01-31 09:05:01,845 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 117 transitions. Word has length 117 [2018-01-31 09:05:01,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:05:01,845 INFO L432 AbstractCegarLoop]: Abstraction has 109 states and 117 transitions. [2018-01-31 09:05:01,845 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 09:05:01,845 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 117 transitions. [2018-01-31 09:05:01,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-01-31 09:05:01,846 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:05:01,846 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 09:05:01,846 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0AssertViolation]=== [2018-01-31 09:05:01,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1180114590, now seen corresponding path program 1 times [2018-01-31 09:05:01,846 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:05:01,847 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:05:01,847 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:01,847 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:05:01,847 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:05:01,873 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:05:01,967 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 09:05:01,967 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:05:01,967 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 09:05:01,975 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:05:02,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:05:02,006 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:05:02,058 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 09:05:02,076 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:05:02,076 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2018-01-31 09:05:02,076 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-31 09:05:02,076 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-31 09:05:02,077 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-01-31 09:05:02,077 INFO L87 Difference]: Start difference. First operand 109 states and 117 transitions. Second operand 10 states. [2018-01-31 09:05:02,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:05:02,291 INFO L93 Difference]: Finished difference Result 215 states and 232 transitions. [2018-01-31 09:05:02,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-31 09:05:02,292 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 143 [2018-01-31 09:05:02,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:05:02,292 INFO L225 Difference]: With dead ends: 215 [2018-01-31 09:05:02,293 INFO L226 Difference]: Without dead ends: 135 [2018-01-31 09:05:02,296 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-01-31 09:05:02,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-01-31 09:05:02,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 125. [2018-01-31 09:05:02,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-01-31 09:05:02,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 133 transitions. [2018-01-31 09:05:02,302 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 133 transitions. Word has length 143 [2018-01-31 09:05:02,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:05:02,302 INFO L432 AbstractCegarLoop]: Abstraction has 125 states and 133 transitions. [2018-01-31 09:05:02,302 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-31 09:05:02,302 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 133 transitions. [2018-01-31 09:05:02,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-01-31 09:05:02,303 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:05:02,303 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 09:05:02,303 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0AssertViolation]=== [2018-01-31 09:05:02,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1412228734, now seen corresponding path program 2 times [2018-01-31 09:05:02,304 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:05:02,304 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:05:02,305 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:02,305 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:05:02,305 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:05:02,326 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:05:02,487 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 09:05:02,487 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:05:02,487 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-31 09:05:02,488 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-31 09:05:02,488 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-31 09:05:02,488 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-31 09:05:02,488 INFO L87 Difference]: Start difference. First operand 125 states and 133 transitions. Second operand 9 states. [2018-01-31 09:05:02,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:05:02,607 INFO L93 Difference]: Finished difference Result 210 states and 225 transitions. [2018-01-31 09:05:02,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-31 09:05:02,607 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 159 [2018-01-31 09:05:02,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:05:02,609 INFO L225 Difference]: With dead ends: 210 [2018-01-31 09:05:02,609 INFO L226 Difference]: Without dead ends: 204 [2018-01-31 09:05:02,609 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 09:05:02,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-01-31 09:05:02,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 165. [2018-01-31 09:05:02,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-01-31 09:05:02,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 179 transitions. [2018-01-31 09:05:02,624 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 179 transitions. Word has length 159 [2018-01-31 09:05:02,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:05:02,625 INFO L432 AbstractCegarLoop]: Abstraction has 165 states and 179 transitions. [2018-01-31 09:05:02,625 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-31 09:05:02,625 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 179 transitions. [2018-01-31 09:05:02,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-01-31 09:05:02,626 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:05:02,626 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 09:05:02,626 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0AssertViolation]=== [2018-01-31 09:05:02,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1308538474, now seen corresponding path program 1 times [2018-01-31 09:05:02,626 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:05:02,626 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:05:02,627 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:02,627 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:05:02,627 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:02,633 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:05:02,634 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:05:02,634 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) [2018-01-31 09:05:02,648 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:05:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:05:02,674 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:05:02,744 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 09:05:02,760 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:05:02,761 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-01-31 09:05:02,761 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-31 09:05:02,761 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-31 09:05:02,761 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-31 09:05:02,761 INFO L87 Difference]: Start difference. First operand 165 states and 179 transitions. Second operand 9 states. [2018-01-31 09:05:02,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:05:02,840 INFO L93 Difference]: Finished difference Result 306 states and 334 transitions. [2018-01-31 09:05:02,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-31 09:05:02,840 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 169 [2018-01-31 09:05:02,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:05:02,841 INFO L225 Difference]: With dead ends: 306 [2018-01-31 09:05:02,841 INFO L226 Difference]: Without dead ends: 178 [2018-01-31 09:05:02,841 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 09:05:02,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-01-31 09:05:02,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 173. [2018-01-31 09:05:02,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-01-31 09:05:02,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 187 transitions. [2018-01-31 09:05:02,848 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 187 transitions. Word has length 169 [2018-01-31 09:05:02,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:05:02,848 INFO L432 AbstractCegarLoop]: Abstraction has 173 states and 187 transitions. [2018-01-31 09:05:02,848 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-31 09:05:02,848 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 187 transitions. [2018-01-31 09:05:02,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-01-31 09:05:02,849 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:05:02,850 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 09:05:02,850 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr0AssertViolation]=== [2018-01-31 09:05:02,850 INFO L82 PathProgramCache]: Analyzing trace with hash 977564863, now seen corresponding path program 2 times [2018-01-31 09:05:02,850 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:05:02,850 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:05:02,850 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:02,851 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:05:02,851 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:02,857 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:05:02,857 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:05:02,857 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 09:05:02,868 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:05:02,878 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:05:02,889 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:05:02,891 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:05:02,893 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:05:02,944 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 09:05:02,961 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:05:02,961 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-01-31 09:05:02,962 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-31 09:05:02,962 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-31 09:05:02,962 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-01-31 09:05:02,962 INFO L87 Difference]: Start difference. First operand 173 states and 187 transitions. Second operand 11 states. [2018-01-31 09:05:03,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:05:03,022 INFO L93 Difference]: Finished difference Result 314 states and 342 transitions. [2018-01-31 09:05:03,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-31 09:05:03,022 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 177 [2018-01-31 09:05:03,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:05:03,023 INFO L225 Difference]: With dead ends: 314 [2018-01-31 09:05:03,023 INFO L226 Difference]: Without dead ends: 186 [2018-01-31 09:05:03,024 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 09:05:03,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-01-31 09:05:03,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 181. [2018-01-31 09:05:03,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-01-31 09:05:03,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 195 transitions. [2018-01-31 09:05:03,028 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 195 transitions. Word has length 177 [2018-01-31 09:05:03,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:05:03,028 INFO L432 AbstractCegarLoop]: Abstraction has 181 states and 195 transitions. [2018-01-31 09:05:03,028 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-31 09:05:03,028 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 195 transitions. [2018-01-31 09:05:03,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-01-31 09:05:03,030 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:05:03,030 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 09:05:03,030 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr0AssertViolation]=== [2018-01-31 09:05:03,030 INFO L82 PathProgramCache]: Analyzing trace with hash 220358376, now seen corresponding path program 3 times [2018-01-31 09:05:03,030 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:05:03,030 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:05:03,031 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:03,031 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:05:03,031 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:03,037 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:05:03,037 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:05:03,037 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 09:05:03,060 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:05:03,070 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:05:03,074 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:05:03,075 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:05:03,076 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:05:03,132 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 09:05:03,150 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:05:03,150 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-31 09:05:03,151 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-31 09:05:03,151 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-31 09:05:03,151 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-01-31 09:05:03,151 INFO L87 Difference]: Start difference. First operand 181 states and 195 transitions. Second operand 5 states. [2018-01-31 09:05:03,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:05:03,181 INFO L93 Difference]: Finished difference Result 313 states and 349 transitions. [2018-01-31 09:05:03,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-31 09:05:03,181 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2018-01-31 09:05:03,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:05:03,182 INFO L225 Difference]: With dead ends: 313 [2018-01-31 09:05:03,182 INFO L226 Difference]: Without dead ends: 192 [2018-01-31 09:05:03,182 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 09:05:03,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-01-31 09:05:03,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 179. [2018-01-31 09:05:03,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-01-31 09:05:03,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 191 transitions. [2018-01-31 09:05:03,186 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 191 transitions. Word has length 185 [2018-01-31 09:05:03,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:05:03,186 INFO L432 AbstractCegarLoop]: Abstraction has 179 states and 191 transitions. [2018-01-31 09:05:03,186 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-31 09:05:03,187 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 191 transitions. [2018-01-31 09:05:03,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-01-31 09:05:03,187 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:05:03,187 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 09:05:03,187 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr0AssertViolation]=== [2018-01-31 09:05:03,188 INFO L82 PathProgramCache]: Analyzing trace with hash -908536472, now seen corresponding path program 1 times [2018-01-31 09:05:03,188 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:05:03,188 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:05:03,188 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:03,188 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:05:03,188 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:03,194 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:05:03,194 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:05:03,194 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 09:05:03,203 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:05:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:05:03,229 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:05:03,646 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 09:05:03,663 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:05:03,663 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-01-31 09:05:03,664 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-31 09:05:03,664 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-31 09:05:03,664 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-31 09:05:03,664 INFO L87 Difference]: Start difference. First operand 179 states and 191 transitions. Second operand 13 states. [2018-01-31 09:05:03,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:05:03,874 INFO L93 Difference]: Finished difference Result 318 states and 342 transitions. [2018-01-31 09:05:03,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-31 09:05:03,882 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 205 [2018-01-31 09:05:03,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:05:03,882 INFO L225 Difference]: With dead ends: 318 [2018-01-31 09:05:03,882 INFO L226 Difference]: Without dead ends: 192 [2018-01-31 09:05:03,883 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=178, Invalid=328, Unknown=0, NotChecked=0, Total=506 [2018-01-31 09:05:03,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-01-31 09:05:03,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 187. [2018-01-31 09:05:03,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-01-31 09:05:03,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 199 transitions. [2018-01-31 09:05:03,887 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 199 transitions. Word has length 205 [2018-01-31 09:05:03,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:05:03,887 INFO L432 AbstractCegarLoop]: Abstraction has 187 states and 199 transitions. [2018-01-31 09:05:03,887 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-31 09:05:03,887 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 199 transitions. [2018-01-31 09:05:03,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-01-31 09:05:03,888 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:05:03,888 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 09:05:03,888 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr0AssertViolation]=== [2018-01-31 09:05:03,888 INFO L82 PathProgramCache]: Analyzing trace with hash 50552849, now seen corresponding path program 2 times [2018-01-31 09:05:03,888 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:05:03,888 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:05:03,889 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:03,889 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:05:03,889 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:03,897 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:05:03,897 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:05:03,897 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) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:05:03,907 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:05:03,923 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:05:03,936 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:05:03,938 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:05:03,941 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:05:04,037 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 09:05:04,054 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:05:04,054 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-01-31 09:05:04,054 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-31 09:05:04,054 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-31 09:05:04,055 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-01-31 09:05:04,055 INFO L87 Difference]: Start difference. First operand 187 states and 199 transitions. Second operand 15 states. [2018-01-31 09:05:04,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:05:04,176 INFO L93 Difference]: Finished difference Result 326 states and 350 transitions. [2018-01-31 09:05:04,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-31 09:05:04,181 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 213 [2018-01-31 09:05:04,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:05:04,182 INFO L225 Difference]: With dead ends: 326 [2018-01-31 09:05:04,182 INFO L226 Difference]: Without dead ends: 200 [2018-01-31 09:05:04,183 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 199 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 09:05:04,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-01-31 09:05:04,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 195. [2018-01-31 09:05:04,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-01-31 09:05:04,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 207 transitions. [2018-01-31 09:05:04,187 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 207 transitions. Word has length 213 [2018-01-31 09:05:04,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:05:04,187 INFO L432 AbstractCegarLoop]: Abstraction has 195 states and 207 transitions. [2018-01-31 09:05:04,187 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-31 09:05:04,187 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 207 transitions. [2018-01-31 09:05:04,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-01-31 09:05:04,188 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:05:04,188 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 09:05:04,188 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr0AssertViolation]=== [2018-01-31 09:05:04,188 INFO L82 PathProgramCache]: Analyzing trace with hash 925970874, now seen corresponding path program 3 times [2018-01-31 09:05:04,188 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:05:04,188 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:05:04,189 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:04,189 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:05:04,189 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:04,195 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:05:04,195 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:05:04,195 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 09:05:04,204 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:05:04,214 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:05:04,221 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:05:04,227 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:05:04,228 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:05:04,230 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:05:04,290 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 09:05:04,307 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:05:04,307 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-01-31 09:05:04,308 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-31 09:05:04,308 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-31 09:05:04,308 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-01-31 09:05:04,308 INFO L87 Difference]: Start difference. First operand 195 states and 207 transitions. Second operand 7 states. [2018-01-31 09:05:04,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:05:04,470 INFO L93 Difference]: Finished difference Result 331 states and 364 transitions. [2018-01-31 09:05:04,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-31 09:05:04,472 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 221 [2018-01-31 09:05:04,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:05:04,473 INFO L225 Difference]: With dead ends: 331 [2018-01-31 09:05:04,474 INFO L226 Difference]: Without dead ends: 212 [2018-01-31 09:05:04,474 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 09:05:04,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-01-31 09:05:04,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 205. [2018-01-31 09:05:04,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-01-31 09:05:04,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 218 transitions. [2018-01-31 09:05:04,479 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 218 transitions. Word has length 221 [2018-01-31 09:05:04,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:05:04,480 INFO L432 AbstractCegarLoop]: Abstraction has 205 states and 218 transitions. [2018-01-31 09:05:04,480 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-31 09:05:04,480 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 218 transitions. [2018-01-31 09:05:04,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-01-31 09:05:04,480 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:05:04,481 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 09:05:04,481 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr0AssertViolation]=== [2018-01-31 09:05:04,481 INFO L82 PathProgramCache]: Analyzing trace with hash -451765490, now seen corresponding path program 4 times [2018-01-31 09:05:04,481 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:05:04,481 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:05:04,481 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:04,481 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:05:04,481 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:04,495 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:05:04,495 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:05:04,495 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) [2018-01-31 09:05:04,500 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:05:04,538 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:05:04,540 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:05:04,668 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2018-01-31 09:05:04,685 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:05:04,685 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-01-31 09:05:04,686 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-31 09:05:04,686 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-31 09:05:04,686 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2018-01-31 09:05:04,686 INFO L87 Difference]: Start difference. First operand 205 states and 218 transitions. Second operand 17 states. [2018-01-31 09:05:04,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:05:04,842 INFO L93 Difference]: Finished difference Result 354 states and 380 transitions. [2018-01-31 09:05:04,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-31 09:05:04,842 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 251 [2018-01-31 09:05:04,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:05:04,842 INFO L225 Difference]: With dead ends: 354 [2018-01-31 09:05:04,842 INFO L226 Difference]: Without dead ends: 218 [2018-01-31 09:05:04,843 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 235 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 09:05:04,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-01-31 09:05:04,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 213. [2018-01-31 09:05:04,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-01-31 09:05:04,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 226 transitions. [2018-01-31 09:05:04,847 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 226 transitions. Word has length 251 [2018-01-31 09:05:04,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:05:04,847 INFO L432 AbstractCegarLoop]: Abstraction has 213 states and 226 transitions. [2018-01-31 09:05:04,847 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-31 09:05:04,847 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 226 transitions. [2018-01-31 09:05:04,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-01-31 09:05:04,848 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:05:04,848 INFO L351 BasicCegarLoop]: trace histogram [15, 12, 12, 12, 12, 9, 8, 8, 8, 8, 8, 8, 8, 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 09:05:04,848 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr0AssertViolation]=== [2018-01-31 09:05:04,848 INFO L82 PathProgramCache]: Analyzing trace with hash 184477175, now seen corresponding path program 5 times [2018-01-31 09:05:04,848 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:05:04,848 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:05:04,849 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:04,849 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:05:04,849 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:04,856 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:05:04,856 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:05:04,856 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) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:05:04,874 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 09:05:04,882 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:05:04,883 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:05:04,885 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:05:04,887 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:05:04,890 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:05:04,894 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:05:04,902 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:05:04,903 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:05:04,905 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:05:05,300 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 171 proven. 12 refuted. 0 times theorem prover too weak. 633 trivial. 0 not checked. [2018-01-31 09:05:05,319 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:05:05,319 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-01-31 09:05:05,319 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-31 09:05:05,319 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-31 09:05:05,319 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-01-31 09:05:05,320 INFO L87 Difference]: Start difference. First operand 213 states and 226 transitions. Second operand 7 states. [2018-01-31 09:05:05,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:05:05,409 INFO L93 Difference]: Finished difference Result 350 states and 383 transitions. [2018-01-31 09:05:05,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-31 09:05:05,421 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 259 [2018-01-31 09:05:05,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:05:05,422 INFO L225 Difference]: With dead ends: 350 [2018-01-31 09:05:05,422 INFO L226 Difference]: Without dead ends: 221 [2018-01-31 09:05:05,422 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2018-01-31 09:05:05,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-01-31 09:05:05,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 219. [2018-01-31 09:05:05,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-01-31 09:05:05,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 232 transitions. [2018-01-31 09:05:05,426 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 232 transitions. Word has length 259 [2018-01-31 09:05:05,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:05:05,426 INFO L432 AbstractCegarLoop]: Abstraction has 219 states and 232 transitions. [2018-01-31 09:05:05,426 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-31 09:05:05,427 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 232 transitions. [2018-01-31 09:05:05,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-01-31 09:05:05,427 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:05:05,428 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 9, 9, 8, 8, 8, 8, 8, 8, 8, 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 09:05:05,428 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr0AssertViolation]=== [2018-01-31 09:05:05,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1105735631, now seen corresponding path program 6 times [2018-01-31 09:05:05,428 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:05:05,428 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:05:05,428 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:05,428 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:05:05,428 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:05,435 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:05:05,435 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:05:05,435 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 09:05:05,447 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 09:05:05,458 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:05:05,460 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:05:05,465 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:05:05,469 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:05:05,478 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:05:06,203 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:05:06,478 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:05:06,479 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:05:06,482 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:05:06,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 396 proven. 12 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2018-01-31 09:05:06,580 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:05:06,580 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-01-31 09:05:06,580 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-31 09:05:06,580 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-31 09:05:06,580 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-01-31 09:05:06,580 INFO L87 Difference]: Start difference. First operand 219 states and 232 transitions. Second operand 7 states. [2018-01-31 09:05:06,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:05:06,647 INFO L93 Difference]: Finished difference Result 308 states and 327 transitions. [2018-01-31 09:05:06,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-31 09:05:06,657 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 277 [2018-01-31 09:05:06,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:05:06,658 INFO L225 Difference]: With dead ends: 308 [2018-01-31 09:05:06,658 INFO L226 Difference]: Without dead ends: 245 [2018-01-31 09:05:06,659 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 271 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 09:05:06,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-01-31 09:05:06,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 235. [2018-01-31 09:05:06,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-01-31 09:05:06,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 248 transitions. [2018-01-31 09:05:06,663 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 248 transitions. Word has length 277 [2018-01-31 09:05:06,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:05:06,663 INFO L432 AbstractCegarLoop]: Abstraction has 235 states and 248 transitions. [2018-01-31 09:05:06,663 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-31 09:05:06,663 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 248 transitions. [2018-01-31 09:05:06,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-01-31 09:05:06,664 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:05:06,664 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 9, 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 09:05:06,665 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr0AssertViolation]=== [2018-01-31 09:05:06,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1157525306, now seen corresponding path program 7 times [2018-01-31 09:05:06,665 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:05:06,665 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:05:06,665 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:06,665 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:05:06,665 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:06,672 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:05:06,672 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:05:06,672 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 09:05:06,677 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 09:05:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:05:06,709 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:05:06,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 846 trivial. 0 not checked. [2018-01-31 09:05:06,901 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:05:06,901 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-01-31 09:05:06,901 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-31 09:05:06,901 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-31 09:05:06,902 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-01-31 09:05:06,902 INFO L87 Difference]: Start difference. First operand 235 states and 248 transitions. Second operand 19 states. [2018-01-31 09:05:07,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:05:07,081 INFO L93 Difference]: Finished difference Result 406 states and 432 transitions. [2018-01-31 09:05:07,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-31 09:05:07,084 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 285 [2018-01-31 09:05:07,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:05:07,085 INFO L225 Difference]: With dead ends: 406 [2018-01-31 09:05:07,085 INFO L226 Difference]: Without dead ends: 248 [2018-01-31 09:05:07,085 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 267 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 09:05:07,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-01-31 09:05:07,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 243. [2018-01-31 09:05:07,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-01-31 09:05:07,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 256 transitions. [2018-01-31 09:05:07,089 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 256 transitions. Word has length 285 [2018-01-31 09:05:07,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:05:07,090 INFO L432 AbstractCegarLoop]: Abstraction has 243 states and 256 transitions. [2018-01-31 09:05:07,090 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-31 09:05:07,090 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 256 transitions. [2018-01-31 09:05:07,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-01-31 09:05:07,091 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:05:07,091 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 10, 9, 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 09:05:07,091 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr0AssertViolation]=== [2018-01-31 09:05:07,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1465786001, now seen corresponding path program 8 times [2018-01-31 09:05:07,091 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:05:07,091 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:05:07,092 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:07,092 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:05:07,092 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:07,099 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:05:07,099 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:05:07,099 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) [2018-01-31 09:05:07,111 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:05:07,122 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:05:07,139 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:05:07,142 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:05:07,145 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:05:07,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 846 trivial. 0 not checked. [2018-01-31 09:05:07,325 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:05:07,325 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-01-31 09:05:07,325 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-31 09:05:07,325 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-31 09:05:07,325 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-31 09:05:07,326 INFO L87 Difference]: Start difference. First operand 243 states and 256 transitions. Second operand 21 states. [2018-01-31 09:05:07,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:05:07,531 INFO L93 Difference]: Finished difference Result 414 states and 440 transitions. [2018-01-31 09:05:07,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-01-31 09:05:07,547 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 293 [2018-01-31 09:05:07,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:05:07,548 INFO L225 Difference]: With dead ends: 414 [2018-01-31 09:05:07,548 INFO L226 Difference]: Without dead ends: 256 [2018-01-31 09:05:07,549 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 273 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 09:05:07,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2018-01-31 09:05:07,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 251. [2018-01-31 09:05:07,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-01-31 09:05:07,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 264 transitions. [2018-01-31 09:05:07,553 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 264 transitions. Word has length 293 [2018-01-31 09:05:07,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:05:07,553 INFO L432 AbstractCegarLoop]: Abstraction has 251 states and 264 transitions. [2018-01-31 09:05:07,553 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-31 09:05:07,553 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 264 transitions. [2018-01-31 09:05:07,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2018-01-31 09:05:07,558 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:05:07,558 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 11, 10, 10, 10, 10, 10, 10, 10, 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 09:05:07,558 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr0AssertViolation]=== [2018-01-31 09:05:07,558 INFO L82 PathProgramCache]: Analyzing trace with hash 975141144, now seen corresponding path program 9 times [2018-01-31 09:05:07,558 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:05:07,558 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:05:07,559 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:07,559 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:05:07,559 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:07,575 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:05:07,575 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:05:07,575 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 09:05:07,587 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:05:07,598 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:05:07,603 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:05:07,650 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:05:07,666 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:05:07,690 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:05:07,691 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:05:07,693 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:05:07,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1226 backedges. 264 proven. 20 refuted. 0 times theorem prover too weak. 942 trivial. 0 not checked. [2018-01-31 09:05:07,859 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:05:07,859 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-01-31 09:05:07,859 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-31 09:05:07,860 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-31 09:05:07,860 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-31 09:05:07,860 INFO L87 Difference]: Start difference. First operand 251 states and 264 transitions. Second operand 9 states. [2018-01-31 09:05:07,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:05:07,999 INFO L93 Difference]: Finished difference Result 419 states and 454 transitions. [2018-01-31 09:05:07,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-31 09:05:07,999 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 301 [2018-01-31 09:05:07,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:05:08,000 INFO L225 Difference]: With dead ends: 419 [2018-01-31 09:05:08,000 INFO L226 Difference]: Without dead ends: 268 [2018-01-31 09:05:08,000 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2018-01-31 09:05:08,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2018-01-31 09:05:08,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 261. [2018-01-31 09:05:08,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-01-31 09:05:08,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 275 transitions. [2018-01-31 09:05:08,004 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 275 transitions. Word has length 301 [2018-01-31 09:05:08,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:05:08,005 INFO L432 AbstractCegarLoop]: Abstraction has 261 states and 275 transitions. [2018-01-31 09:05:08,005 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-31 09:05:08,005 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 275 transitions. [2018-01-31 09:05:08,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-01-31 09:05:08,006 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:05:08,006 INFO L351 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 11, 10, 10, 10, 10, 10, 10, 10, 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 09:05:08,006 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr0AssertViolation]=== [2018-01-31 09:05:08,006 INFO L82 PathProgramCache]: Analyzing trace with hash -16885140, now seen corresponding path program 10 times [2018-01-31 09:05:08,006 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:05:08,006 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:05:08,007 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:08,007 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:05:08,007 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:08,014 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:05:08,014 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:05:08,014 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) [2018-01-31 09:05:08,028 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:05:08,102 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:05:08,105 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:05:08,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1616 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 1236 trivial. 0 not checked. [2018-01-31 09:05:08,468 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:05:08,468 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-01-31 09:05:08,469 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-31 09:05:08,469 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-31 09:05:08,469 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2018-01-31 09:05:08,469 INFO L87 Difference]: Start difference. First operand 261 states and 275 transitions. Second operand 23 states. [2018-01-31 09:05:08,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:05:08,692 INFO L93 Difference]: Finished difference Result 442 states and 470 transitions. [2018-01-31 09:05:08,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-01-31 09:05:08,692 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 331 [2018-01-31 09:05:08,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:05:08,693 INFO L225 Difference]: With dead ends: 442 [2018-01-31 09:05:08,693 INFO L226 Difference]: Without dead ends: 274 [2018-01-31 09:05:08,693 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 309 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 09:05:08,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2018-01-31 09:05:08,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 269. [2018-01-31 09:05:08,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-01-31 09:05:08,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 283 transitions. [2018-01-31 09:05:08,697 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 283 transitions. Word has length 331 [2018-01-31 09:05:08,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:05:08,697 INFO L432 AbstractCegarLoop]: Abstraction has 269 states and 283 transitions. [2018-01-31 09:05:08,698 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-31 09:05:08,698 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 283 transitions. [2018-01-31 09:05:08,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-01-31 09:05:08,699 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:05:08,699 INFO L351 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 12, 11, 11, 11, 11, 11, 11, 11, 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 09:05:08,699 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr0AssertViolation]=== [2018-01-31 09:05:08,699 INFO L82 PathProgramCache]: Analyzing trace with hash -835327147, now seen corresponding path program 11 times [2018-01-31 09:05:08,699 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:05:08,699 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:05:08,700 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:08,700 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:05:08,700 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:08,707 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:05:08,707 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:05:08,707 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 09:05:08,722 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 09:05:08,731 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:05:08,732 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:05:08,733 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:05:08,735 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:05:08,738 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:05:08,741 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:05:08,745 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:05:08,750 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:05:08,756 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:05:08,765 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:05:08,766 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:05:08,769 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:05:09,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1698 backedges. 339 proven. 27 refuted. 0 times theorem prover too weak. 1332 trivial. 0 not checked. [2018-01-31 09:05:09,165 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:05:09,165 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-01-31 09:05:09,165 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-31 09:05:09,165 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-31 09:05:09,165 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-31 09:05:09,165 INFO L87 Difference]: Start difference. First operand 269 states and 283 transitions. Second operand 9 states. [2018-01-31 09:05:09,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:05:09,214 INFO L93 Difference]: Finished difference Result 438 states and 473 transitions. [2018-01-31 09:05:09,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-31 09:05:09,215 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 339 [2018-01-31 09:05:09,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:05:09,216 INFO L225 Difference]: With dead ends: 438 [2018-01-31 09:05:09,216 INFO L226 Difference]: Without dead ends: 277 [2018-01-31 09:05:09,216 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2018-01-31 09:05:09,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2018-01-31 09:05:09,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 275. [2018-01-31 09:05:09,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-01-31 09:05:09,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 289 transitions. [2018-01-31 09:05:09,220 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 289 transitions. Word has length 339 [2018-01-31 09:05:09,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:05:09,220 INFO L432 AbstractCegarLoop]: Abstraction has 275 states and 289 transitions. [2018-01-31 09:05:09,220 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-31 09:05:09,220 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 289 transitions. [2018-01-31 09:05:09,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2018-01-31 09:05:09,222 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:05:09,222 INFO L351 BasicCegarLoop]: trace histogram [24, 21, 21, 21, 21, 12, 12, 11, 11, 11, 11, 11, 11, 11, 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 09:05:09,222 INFO L371 AbstractCegarLoop]: === Iteration 22 === [mainErr0AssertViolation]=== [2018-01-31 09:05:09,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1085622739, now seen corresponding path program 12 times [2018-01-31 09:05:09,222 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:05:09,222 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:05:09,222 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:09,223 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:05:09,223 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:05:09,230 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:05:09,230 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:05:09,230 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 09:05:09,249 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 09:05:09,261 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:05:09,263 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:05:09,267 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:05:09,275 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:05:09,291 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:06:12,001 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown