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/mempurity-32bit-Automizer_Camel+AI_EQ.epf -i ../../../trunk/examples/svcomp/reducercommutativity/rangesum60_false-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d63d1fb [2018-01-27 23:00:20,828 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-27 23:00:20,830 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-27 23:00:20,851 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-27 23:00:20,852 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-27 23:00:20,853 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-27 23:00:20,854 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-27 23:00:20,857 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-27 23:00:20,859 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-27 23:00:20,859 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-27 23:00:20,861 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-27 23:00:20,862 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-27 23:00:20,863 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-27 23:00:20,864 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-27 23:00:20,865 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-27 23:00:20,875 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-27 23:00:20,877 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-27 23:00:20,882 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-27 23:00:20,884 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-27 23:00:20,885 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-27 23:00:20,890 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-27 23:00:20,896 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-27 23:00:20,897 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-27 23:00:20,897 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Camel+AI_EQ.epf [2018-01-27 23:00:20,916 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-27 23:00:20,917 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-27 23:00:20,917 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-27 23:00:20,918 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-27 23:00:20,918 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-27 23:00:20,918 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-27 23:00:20,918 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-27 23:00:20,919 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-27 23:00:20,919 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-27 23:00:20,920 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-27 23:00:20,920 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-27 23:00:20,920 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-27 23:00:20,920 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-27 23:00:20,920 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-27 23:00:20,920 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-27 23:00:20,921 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-27 23:00:20,921 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-27 23:00:20,921 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-27 23:00:20,921 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-27 23:00:20,921 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-27 23:00:20,922 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-27 23:00:20,922 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-27 23:00:20,922 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-27 23:00:20,922 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-27 23:00:20,922 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-27 23:00:20,922 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-27 23:00:20,923 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-27 23:00:20,923 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-27 23:00:20,924 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-27 23:00:20,924 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-27 23:00:20,925 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-27 23:00:20,925 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-27 23:00:20,925 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-27 23:00:20,925 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-27 23:00:20,925 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-27 23:00:20,926 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-27 23:00:20,926 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-27 23:00:20,979 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-27 23:00:20,994 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-27 23:00:20,999 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-27 23:00:21,000 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-27 23:00:21,001 INFO L276 PluginConnector]: CDTParser initialized [2018-01-27 23:00:21,002 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/rangesum60_false-unreach-call.i [2018-01-27 23:00:21,138 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-27 23:00:21,149 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-27 23:00:21,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-27 23:00:21,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-27 23:00:21,157 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-27 23:00:21,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:00:21" (1/1) ... [2018-01-27 23:00:21,162 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 27.01 11:00:21, skipping insertion in model container [2018-01-27 23:00:21,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:00:21" (1/1) ... [2018-01-27 23:00:21,181 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-27 23:00:21,203 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-27 23:00:21,365 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-27 23:00:21,393 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-27 23:00:21,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:00:21 WrapperNode [2018-01-27 23:00:21,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-27 23:00:21,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-27 23:00:21,408 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-27 23:00:21,408 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-27 23:00:21,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:00:21" (1/1) ... [2018-01-27 23:00:21,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:00:21" (1/1) ... [2018-01-27 23:00:21,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:00:21" (1/1) ... [2018-01-27 23:00:21,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:00:21" (1/1) ... [2018-01-27 23:00:21,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:00:21" (1/1) ... [2018-01-27 23:00:21,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:00:21" (1/1) ... [2018-01-27 23:00:21,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:00:21" (1/1) ... [2018-01-27 23:00:21,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-27 23:00:21,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-27 23:00:21,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-27 23:00:21,466 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-27 23:00:21,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:00:21" (1/1) ... No working directory specified, using /storage/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 [2018-01-27 23:00:21,537 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-27 23:00:21,538 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-27 23:00:21,538 INFO L136 BoogieDeclarations]: Found implementation of procedure init_nondet [2018-01-27 23:00:21,538 INFO L136 BoogieDeclarations]: Found implementation of procedure rangesum [2018-01-27 23:00:21,538 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-27 23:00:21,538 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-27 23:00:21,538 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-27 23:00:21,538 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-27 23:00:21,539 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-27 23:00:21,539 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-27 23:00:21,541 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-27 23:00:21,541 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-27 23:00:21,541 INFO L128 BoogieDeclarations]: Found specification of procedure init_nondet [2018-01-27 23:00:21,541 INFO L128 BoogieDeclarations]: Found specification of procedure rangesum [2018-01-27 23:00:21,541 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-27 23:00:21,541 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-27 23:00:21,542 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-27 23:00:22,029 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-27 23:00:22,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:00:22 BoogieIcfgContainer [2018-01-27 23:00:22,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-27 23:00:22,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-27 23:00:22,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-27 23:00:22,034 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-27 23:00:22,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 11:00:21" (1/3) ... [2018-01-27 23:00:22,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37f16c66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:00:22, skipping insertion in model container [2018-01-27 23:00:22,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:00:21" (2/3) ... [2018-01-27 23:00:22,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37f16c66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:00:22, skipping insertion in model container [2018-01-27 23:00:22,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:00:22" (3/3) ... [2018-01-27 23:00:22,037 INFO L105 eAbstractionObserver]: Analyzing ICFG rangesum60_false-unreach-call.i [2018-01-27 23:00:22,046 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-27 23:00:22,054 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-01-27 23:00:22,096 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-27 23:00:22,096 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-27 23:00:22,096 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-27 23:00:22,096 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-27 23:00:22,097 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-27 23:00:22,097 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-27 23:00:22,097 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-27 23:00:22,097 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-27 23:00:22,098 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-27 23:00:22,118 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2018-01-27 23:00:22,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-27 23:00:22,124 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:22,129 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-27 23:00:22,129 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-27 23:00:22,136 INFO L82 PathProgramCache]: Analyzing trace with hash 125893, now seen corresponding path program 1 times [2018-01-27 23:00:22,138 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:22,138 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:22,196 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:22,197 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:00:22,197 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-27 23:00:22,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-27 23:00:22,245 INFO L389 BasicCegarLoop]: Counterexample might be feasible [2018-01-27 23:00:22,252 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-27 23:00:22,258 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-27 23:00:22,259 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-27 23:00:22,259 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-27 23:00:22,259 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-27 23:00:22,259 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-27 23:00:22,259 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-27 23:00:22,259 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-27 23:00:22,259 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-27 23:00:22,259 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-27 23:00:22,262 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2018-01-27 23:00:22,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-01-27 23:00:22,265 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:22,265 INFO L330 BasicCegarLoop]: trace histogram [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] [2018-01-27 23:00:22,265 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:22,266 INFO L82 PathProgramCache]: Analyzing trace with hash 375279108, now seen corresponding path program 1 times [2018-01-27 23:00:22,266 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:22,266 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:22,267 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:22,267 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:00:22,267 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:22,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 23:00:22,293 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-27 23:00:22,325 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-01-27 23:00:22,326 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-27 23:00:22,327 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-27 23:00:22,334 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:00:22,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 23:00:22,405 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:22,443 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-01-27 23:00:22,475 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-27 23:00:22,476 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-27 23:00:22,477 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-27 23:00:22,487 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-27 23:00:22,488 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-27 23:00:22,490 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2018-01-27 23:00:22,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:22,513 INFO L93 Difference]: Finished difference Result 104 states and 127 transitions. [2018-01-27 23:00:22,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-27 23:00:22,515 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 50 [2018-01-27 23:00:22,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:22,621 INFO L225 Difference]: With dead ends: 104 [2018-01-27 23:00:22,622 INFO L226 Difference]: Without dead ends: 55 [2018-01-27 23:00:22,625 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-27 23:00:22,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-01-27 23:00:22,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-01-27 23:00:22,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-01-27 23:00:22,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2018-01-27 23:00:22,667 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 50 [2018-01-27 23:00:22,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:22,667 INFO L432 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2018-01-27 23:00:22,668 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-27 23:00:22,668 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2018-01-27 23:00:22,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-01-27 23:00:22,671 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:22,671 INFO L330 BasicCegarLoop]: trace histogram [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] [2018-01-27 23:00:22,671 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:22,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1865795361, now seen corresponding path program 1 times [2018-01-27 23:00:22,672 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:22,672 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:22,673 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:22,673 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:00:22,673 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:22,697 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:22,698 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:22,698 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 23:00:22,704 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:00:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 23:00:22,765 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:22,832 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-01-27 23:00:22,864 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-27 23:00:22,864 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-27 23:00:22,865 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-27 23:00:22,866 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-27 23:00:22,866 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-27 23:00:22,866 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand 3 states. [2018-01-27 23:00:22,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:22,972 INFO L93 Difference]: Finished difference Result 102 states and 114 transitions. [2018-01-27 23:00:22,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-27 23:00:22,974 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2018-01-27 23:00:22,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:22,976 INFO L225 Difference]: With dead ends: 102 [2018-01-27 23:00:22,976 INFO L226 Difference]: Without dead ends: 60 [2018-01-27 23:00:22,978 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-27 23:00:22,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-01-27 23:00:22,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2018-01-27 23:00:22,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-01-27 23:00:22,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2018-01-27 23:00:22,992 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 55 [2018-01-27 23:00:22,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:22,993 INFO L432 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2018-01-27 23:00:22,993 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-27 23:00:22,993 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2018-01-27 23:00:22,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-01-27 23:00:22,995 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:23,000 INFO L330 BasicCegarLoop]: trace histogram [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] [2018-01-27 23:00:23,000 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:23,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1346148095, now seen corresponding path program 1 times [2018-01-27 23:00:23,001 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:23,001 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:23,002 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:23,002 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:00:23,002 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:23,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 23:00:23,050 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-27 23:00:23,122 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-01-27 23:00:23,122 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-27 23:00:23,122 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-27 23:00:23,136 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:00:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 23:00:23,209 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:23,282 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-01-27 23:00:23,318 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-27 23:00:23,318 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-27 23:00:23,318 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-27 23:00:23,320 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-27 23:00:23,320 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-27 23:00:23,321 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand 3 states. [2018-01-27 23:00:23,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:23,381 INFO L93 Difference]: Finished difference Result 104 states and 122 transitions. [2018-01-27 23:00:23,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-27 23:00:23,382 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2018-01-27 23:00:23,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:23,387 INFO L225 Difference]: With dead ends: 104 [2018-01-27 23:00:23,387 INFO L226 Difference]: Without dead ends: 66 [2018-01-27 23:00:23,388 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-27 23:00:23,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-01-27 23:00:23,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2018-01-27 23:00:23,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-01-27 23:00:23,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2018-01-27 23:00:23,408 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 60 [2018-01-27 23:00:23,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:23,409 INFO L432 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2018-01-27 23:00:23,409 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-27 23:00:23,410 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2018-01-27 23:00:23,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-01-27 23:00:23,412 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:23,412 INFO L330 BasicCegarLoop]: trace histogram [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] [2018-01-27 23:00:23,412 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:23,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1114993982, now seen corresponding path program 1 times [2018-01-27 23:00:23,413 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:23,413 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:23,414 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:23,414 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:00:23,414 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 23:00:23,439 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-27 23:00:23,552 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-01-27 23:00:23,552 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-27 23:00:23,552 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-27 23:00:23,567 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:00:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 23:00:23,624 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:23,690 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-01-27 23:00:23,725 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:23,725 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-01-27 23:00:23,725 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-27 23:00:23,726 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-27 23:00:23,726 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-27 23:00:23,726 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. Second operand 4 states. [2018-01-27 23:00:23,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:23,767 INFO L93 Difference]: Finished difference Result 109 states and 128 transitions. [2018-01-27 23:00:23,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-27 23:00:23,769 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2018-01-27 23:00:23,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:23,770 INFO L225 Difference]: With dead ends: 109 [2018-01-27 23:00:23,771 INFO L226 Difference]: Without dead ends: 66 [2018-01-27 23:00:23,771 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-27 23:00:23,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-01-27 23:00:23,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2018-01-27 23:00:23,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-01-27 23:00:23,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2018-01-27 23:00:23,779 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 60 [2018-01-27 23:00:23,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:23,780 INFO L432 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2018-01-27 23:00:23,780 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-27 23:00:23,780 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2018-01-27 23:00:23,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-01-27 23:00:23,782 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:23,782 INFO L330 BasicCegarLoop]: trace histogram [6, 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] [2018-01-27 23:00:23,782 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:23,782 INFO L82 PathProgramCache]: Analyzing trace with hash -277594267, now seen corresponding path program 1 times [2018-01-27 23:00:23,782 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:23,782 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:23,783 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:23,784 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:00:23,784 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 23:00:23,813 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-27 23:00:23,886 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-01-27 23:00:23,886 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-27 23:00:23,923 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-27 23:00:23,931 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:00:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 23:00:23,985 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:24,106 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-01-27 23:00:24,140 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:24,140 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-01-27 23:00:24,140 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-27 23:00:24,141 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-27 23:00:24,141 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-01-27 23:00:24,141 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand 5 states. [2018-01-27 23:00:24,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:24,302 INFO L93 Difference]: Finished difference Result 123 states and 143 transitions. [2018-01-27 23:00:24,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-27 23:00:24,305 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2018-01-27 23:00:24,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:24,307 INFO L225 Difference]: With dead ends: 123 [2018-01-27 23:00:24,307 INFO L226 Difference]: Without dead ends: 77 [2018-01-27 23:00:24,308 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-01-27 23:00:24,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-01-27 23:00:24,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 65. [2018-01-27 23:00:24,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-01-27 23:00:24,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2018-01-27 23:00:24,318 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 72 [2018-01-27 23:00:24,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:24,318 INFO L432 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2018-01-27 23:00:24,318 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-27 23:00:24,319 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2018-01-27 23:00:24,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-01-27 23:00:24,320 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:24,321 INFO L330 BasicCegarLoop]: trace histogram [9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-01-27 23:00:24,321 INFO L371 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:24,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1605849016, now seen corresponding path program 1 times [2018-01-27 23:00:24,321 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:24,321 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:24,322 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:24,322 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:00:24,322 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:24,334 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:24,335 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:24,335 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 23:00:24,348 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:00:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 23:00:24,412 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:24,563 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2018-01-27 23:00:24,594 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:24,595 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-01-27 23:00:24,595 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-27 23:00:24,595 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-27 23:00:24,596 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-27 23:00:24,596 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand 4 states. [2018-01-27 23:00:24,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:24,765 INFO L93 Difference]: Finished difference Result 123 states and 135 transitions. [2018-01-27 23:00:24,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-27 23:00:24,766 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 96 [2018-01-27 23:00:24,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:24,767 INFO L225 Difference]: With dead ends: 123 [2018-01-27 23:00:24,767 INFO L226 Difference]: Without dead ends: 73 [2018-01-27 23:00:24,768 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-27 23:00:24,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-01-27 23:00:24,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 70. [2018-01-27 23:00:24,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-01-27 23:00:24,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2018-01-27 23:00:24,783 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 96 [2018-01-27 23:00:24,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:24,783 INFO L432 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2018-01-27 23:00:24,783 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-27 23:00:24,783 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2018-01-27 23:00:24,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-01-27 23:00:24,785 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:24,791 INFO L330 BasicCegarLoop]: trace histogram [9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-01-27 23:00:24,791 INFO L371 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:24,792 INFO L82 PathProgramCache]: Analyzing trace with hash 489255322, now seen corresponding path program 2 times [2018-01-27 23:00:24,792 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:24,792 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:24,793 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:24,793 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:00:24,793 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:24,824 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:24,824 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:24,824 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-27 23:00:24,841 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 23:00:24,863 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:24,881 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:24,884 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:24,889 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:25,143 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2018-01-27 23:00:25,176 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:25,177 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-01-27 23:00:25,177 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-27 23:00:25,177 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-27 23:00:25,178 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-27 23:00:25,178 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand 5 states. [2018-01-27 23:00:25,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:25,231 INFO L93 Difference]: Finished difference Result 128 states and 140 transitions. [2018-01-27 23:00:25,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-27 23:00:25,232 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2018-01-27 23:00:25,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:25,233 INFO L225 Difference]: With dead ends: 128 [2018-01-27 23:00:25,233 INFO L226 Difference]: Without dead ends: 78 [2018-01-27 23:00:25,234 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-27 23:00:25,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-01-27 23:00:25,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2018-01-27 23:00:25,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-01-27 23:00:25,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 81 transitions. [2018-01-27 23:00:25,242 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 81 transitions. Word has length 101 [2018-01-27 23:00:25,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:25,242 INFO L432 AbstractCegarLoop]: Abstraction has 75 states and 81 transitions. [2018-01-27 23:00:25,242 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-27 23:00:25,242 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 81 transitions. [2018-01-27 23:00:25,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-01-27 23:00:25,244 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:25,244 INFO L330 BasicCegarLoop]: trace histogram [9, 6, 6, 4, 3, 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] [2018-01-27 23:00:25,244 INFO L371 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:25,245 INFO L82 PathProgramCache]: Analyzing trace with hash -930403080, now seen corresponding path program 3 times [2018-01-27 23:00:25,245 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:25,245 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:25,246 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:25,246 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:25,246 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:25,259 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:25,259 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:25,259 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-27 23:00:25,272 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-27 23:00:25,291 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:25,298 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:25,304 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:25,305 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:25,309 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:25,355 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-01-27 23:00:25,375 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:25,375 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-01-27 23:00:25,376 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-27 23:00:25,376 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-27 23:00:25,376 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-27 23:00:25,376 INFO L87 Difference]: Start difference. First operand 75 states and 81 transitions. Second operand 4 states. [2018-01-27 23:00:25,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:25,443 INFO L93 Difference]: Finished difference Result 112 states and 121 transitions. [2018-01-27 23:00:25,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-27 23:00:25,445 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2018-01-27 23:00:25,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:25,447 INFO L225 Difference]: With dead ends: 112 [2018-01-27 23:00:25,447 INFO L226 Difference]: Without dead ends: 85 [2018-01-27 23:00:25,447 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-27 23:00:25,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-01-27 23:00:25,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2018-01-27 23:00:25,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-01-27 23:00:25,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2018-01-27 23:00:25,457 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 106 [2018-01-27 23:00:25,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:25,458 INFO L432 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2018-01-27 23:00:25,458 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-27 23:00:25,458 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2018-01-27 23:00:25,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-01-27 23:00:25,460 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:25,460 INFO L330 BasicCegarLoop]: trace histogram [9, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-01-27 23:00:25,460 INFO L371 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:25,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1827610016, now seen corresponding path program 4 times [2018-01-27 23:00:25,461 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:25,461 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:25,462 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:25,462 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:25,462 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:25,475 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:25,475 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:25,475 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-27 23:00:25,487 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-27 23:00:25,532 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:25,535 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:25,603 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2018-01-27 23:00:25,628 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:25,628 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-01-27 23:00:25,628 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-27 23:00:25,628 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-27 23:00:25,629 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-27 23:00:25,629 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand 6 states. [2018-01-27 23:00:25,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:25,681 INFO L93 Difference]: Finished difference Result 145 states and 157 transitions. [2018-01-27 23:00:25,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-27 23:00:25,683 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2018-01-27 23:00:25,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:25,684 INFO L225 Difference]: With dead ends: 145 [2018-01-27 23:00:25,685 INFO L226 Difference]: Without dead ends: 89 [2018-01-27 23:00:25,685 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-27 23:00:25,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-01-27 23:00:25,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2018-01-27 23:00:25,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-01-27 23:00:25,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2018-01-27 23:00:25,694 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 112 [2018-01-27 23:00:25,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:25,694 INFO L432 AbstractCegarLoop]: Abstraction has 86 states and 92 transitions. [2018-01-27 23:00:25,694 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-27 23:00:25,694 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 92 transitions. [2018-01-27 23:00:25,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-01-27 23:00:25,696 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:25,697 INFO L330 BasicCegarLoop]: trace histogram [9, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-01-27 23:00:25,697 INFO L371 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:25,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1209466946, now seen corresponding path program 5 times [2018-01-27 23:00:25,697 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:25,697 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:25,698 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:25,698 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:25,698 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:25,712 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:25,712 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:25,712 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-27 23:00:25,726 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-27 23:00:25,748 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:25,752 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:25,753 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:25,759 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:25,943 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 63 proven. 3 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-01-27 23:00:25,961 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:25,962 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-01-27 23:00:25,962 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-27 23:00:25,962 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-27 23:00:25,962 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-27 23:00:25,963 INFO L87 Difference]: Start difference. First operand 86 states and 92 transitions. Second operand 5 states. [2018-01-27 23:00:26,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:26,036 INFO L93 Difference]: Finished difference Result 148 states and 164 transitions. [2018-01-27 23:00:26,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-27 23:00:26,037 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2018-01-27 23:00:26,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:26,039 INFO L225 Difference]: With dead ends: 148 [2018-01-27 23:00:26,039 INFO L226 Difference]: Without dead ends: 96 [2018-01-27 23:00:26,039 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-27 23:00:26,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-01-27 23:00:26,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 92. [2018-01-27 23:00:26,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-01-27 23:00:26,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 99 transitions. [2018-01-27 23:00:26,048 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 99 transitions. Word has length 117 [2018-01-27 23:00:26,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:26,048 INFO L432 AbstractCegarLoop]: Abstraction has 92 states and 99 transitions. [2018-01-27 23:00:26,048 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-27 23:00:26,049 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 99 transitions. [2018-01-27 23:00:26,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-01-27 23:00:26,050 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:26,050 INFO L330 BasicCegarLoop]: trace histogram [12, 9, 9, 6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2018-01-27 23:00:26,050 INFO L371 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:26,051 INFO L82 PathProgramCache]: Analyzing trace with hash 963031532, now seen corresponding path program 6 times [2018-01-27 23:00:26,051 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:26,051 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:26,052 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:26,052 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:26,052 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:26,066 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:26,066 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:26,066 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-27 23:00:26,081 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-27 23:00:26,103 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:26,107 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:26,113 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:26,120 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:26,148 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:26,162 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:26,188 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:26,189 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:26,192 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:26,230 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 108 proven. 12 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2018-01-27 23:00:26,249 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:26,250 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-01-27 23:00:26,250 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-27 23:00:26,250 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-27 23:00:26,250 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-27 23:00:26,250 INFO L87 Difference]: Start difference. First operand 92 states and 99 transitions. Second operand 6 states. [2018-01-27 23:00:26,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:26,445 INFO L93 Difference]: Finished difference Result 160 states and 178 transitions. [2018-01-27 23:00:26,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-27 23:00:26,445 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2018-01-27 23:00:26,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:26,446 INFO L225 Difference]: With dead ends: 160 [2018-01-27 23:00:26,446 INFO L226 Difference]: Without dead ends: 102 [2018-01-27 23:00:26,447 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-27 23:00:26,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-01-27 23:00:26,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 98. [2018-01-27 23:00:26,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-01-27 23:00:26,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2018-01-27 23:00:26,456 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 135 [2018-01-27 23:00:26,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:26,462 INFO L432 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2018-01-27 23:00:26,462 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-27 23:00:26,462 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2018-01-27 23:00:26,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-01-27 23:00:26,463 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:26,464 INFO L330 BasicCegarLoop]: trace histogram [15, 12, 12, 9, 9, 9, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2018-01-27 23:00:26,464 INFO L371 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:26,464 INFO L82 PathProgramCache]: Analyzing trace with hash 183275286, now seen corresponding path program 7 times [2018-01-27 23:00:26,464 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:26,464 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:26,465 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:26,465 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:26,465 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:26,483 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:26,483 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:26,483 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-27 23:00:26,499 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:00:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 23:00:26,543 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:26,578 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2018-01-27 23:00:26,610 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:26,610 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-01-27 23:00:26,610 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-27 23:00:26,611 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-27 23:00:26,611 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-01-27 23:00:26,611 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand 7 states. [2018-01-27 23:00:26,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:26,724 INFO L93 Difference]: Finished difference Result 174 states and 190 transitions. [2018-01-27 23:00:26,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-27 23:00:26,726 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 153 [2018-01-27 23:00:26,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:26,727 INFO L225 Difference]: With dead ends: 174 [2018-01-27 23:00:26,727 INFO L226 Difference]: Without dead ends: 106 [2018-01-27 23:00:26,728 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-01-27 23:00:26,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-01-27 23:00:26,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2018-01-27 23:00:26,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-01-27 23:00:26,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 111 transitions. [2018-01-27 23:00:26,735 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 111 transitions. Word has length 153 [2018-01-27 23:00:26,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:26,735 INFO L432 AbstractCegarLoop]: Abstraction has 103 states and 111 transitions. [2018-01-27 23:00:26,735 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-27 23:00:26,735 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 111 transitions. [2018-01-27 23:00:26,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-01-27 23:00:26,736 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:26,736 INFO L330 BasicCegarLoop]: trace histogram [15, 12, 12, 9, 9, 9, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 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] [2018-01-27 23:00:26,736 INFO L371 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:26,736 INFO L82 PathProgramCache]: Analyzing trace with hash 855897972, now seen corresponding path program 8 times [2018-01-27 23:00:26,736 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:26,736 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:26,737 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:26,737 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:00:26,737 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:26,757 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:26,758 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:26,758 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-27 23:00:26,771 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 23:00:26,795 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:26,820 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:26,823 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:26,827 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:26,906 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2018-01-27 23:00:26,925 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:26,926 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-01-27 23:00:26,926 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-27 23:00:26,926 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-27 23:00:26,926 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-01-27 23:00:26,927 INFO L87 Difference]: Start difference. First operand 103 states and 111 transitions. Second operand 8 states. [2018-01-27 23:00:26,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:26,971 INFO L93 Difference]: Finished difference Result 179 states and 195 transitions. [2018-01-27 23:00:26,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-27 23:00:26,971 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 158 [2018-01-27 23:00:26,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:26,972 INFO L225 Difference]: With dead ends: 179 [2018-01-27 23:00:26,972 INFO L226 Difference]: Without dead ends: 111 [2018-01-27 23:00:26,973 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-01-27 23:00:26,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-01-27 23:00:26,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 108. [2018-01-27 23:00:26,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-01-27 23:00:26,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 116 transitions. [2018-01-27 23:00:26,980 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 116 transitions. Word has length 158 [2018-01-27 23:00:26,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:26,980 INFO L432 AbstractCegarLoop]: Abstraction has 108 states and 116 transitions. [2018-01-27 23:00:26,980 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-27 23:00:26,981 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 116 transitions. [2018-01-27 23:00:26,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-01-27 23:00:26,982 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:26,982 INFO L330 BasicCegarLoop]: trace histogram [15, 12, 12, 9, 9, 9, 7, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 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] [2018-01-27 23:00:26,982 INFO L371 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:26,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1716184618, now seen corresponding path program 9 times [2018-01-27 23:00:26,983 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:26,983 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:26,984 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:26,984 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:26,984 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:27,002 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:27,002 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:27,002 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-27 23:00:27,018 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-27 23:00:27,036 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:27,045 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:27,061 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:27,161 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:27,162 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:27,165 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:27,226 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 208 proven. 10 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2018-01-27 23:00:27,245 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:27,245 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-01-27 23:00:27,245 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-27 23:00:27,246 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-27 23:00:27,246 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-27 23:00:27,246 INFO L87 Difference]: Start difference. First operand 108 states and 116 transitions. Second operand 5 states. [2018-01-27 23:00:27,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:27,263 INFO L93 Difference]: Finished difference Result 157 states and 170 transitions. [2018-01-27 23:00:27,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-27 23:00:27,263 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2018-01-27 23:00:27,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:27,264 INFO L225 Difference]: With dead ends: 157 [2018-01-27 23:00:27,265 INFO L226 Difference]: Without dead ends: 118 [2018-01-27 23:00:27,265 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-27 23:00:27,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-01-27 23:00:27,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2018-01-27 23:00:27,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-01-27 23:00:27,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 122 transitions. [2018-01-27 23:00:27,271 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 122 transitions. Word has length 163 [2018-01-27 23:00:27,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:27,272 INFO L432 AbstractCegarLoop]: Abstraction has 114 states and 122 transitions. [2018-01-27 23:00:27,272 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-27 23:00:27,274 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 122 transitions. [2018-01-27 23:00:27,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-01-27 23:00:27,275 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:27,275 INFO L330 BasicCegarLoop]: trace histogram [15, 12, 12, 9, 9, 9, 7, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-27 23:00:27,276 INFO L371 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:27,276 INFO L82 PathProgramCache]: Analyzing trace with hash -98851394, now seen corresponding path program 10 times [2018-01-27 23:00:27,276 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:27,276 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:27,277 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:27,277 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:27,277 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:27,294 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:27,294 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:27,294 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-27 23:00:27,304 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-27 23:00:27,361 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:27,365 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:27,534 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2018-01-27 23:00:27,562 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:27,562 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-01-27 23:00:27,563 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-27 23:00:27,563 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-27 23:00:27,563 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-01-27 23:00:27,563 INFO L87 Difference]: Start difference. First operand 114 states and 122 transitions. Second operand 9 states. [2018-01-27 23:00:27,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:27,636 INFO L93 Difference]: Finished difference Result 196 states and 212 transitions. [2018-01-27 23:00:27,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-27 23:00:27,636 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 169 [2018-01-27 23:00:27,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:27,637 INFO L225 Difference]: With dead ends: 196 [2018-01-27 23:00:27,638 INFO L226 Difference]: Without dead ends: 122 [2018-01-27 23:00:27,638 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-01-27 23:00:27,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-01-27 23:00:27,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 119. [2018-01-27 23:00:27,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-01-27 23:00:27,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 127 transitions. [2018-01-27 23:00:27,644 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 127 transitions. Word has length 169 [2018-01-27 23:00:27,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:27,645 INFO L432 AbstractCegarLoop]: Abstraction has 119 states and 127 transitions. [2018-01-27 23:00:27,645 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-27 23:00:27,645 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 127 transitions. [2018-01-27 23:00:27,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-01-27 23:00:27,646 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:27,646 INFO L330 BasicCegarLoop]: trace histogram [15, 12, 12, 9, 9, 9, 8, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-27 23:00:27,646 INFO L371 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:27,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1262317028, now seen corresponding path program 11 times [2018-01-27 23:00:27,647 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:27,647 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:27,648 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:27,648 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:27,648 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:27,664 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:27,664 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:27,664 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-27 23:00:27,677 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 23:00:27,694 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:27,699 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:27,705 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:27,710 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:27,716 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:27,717 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:27,720 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:27,740 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 259 proven. 3 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2018-01-27 23:00:27,759 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:27,759 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-01-27 23:00:27,760 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-27 23:00:27,760 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-27 23:00:27,760 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-27 23:00:27,760 INFO L87 Difference]: Start difference. First operand 119 states and 127 transitions. Second operand 4 states. [2018-01-27 23:00:27,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:27,775 INFO L93 Difference]: Finished difference Result 194 states and 212 transitions. [2018-01-27 23:00:27,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-27 23:00:27,776 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2018-01-27 23:00:27,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:27,777 INFO L225 Difference]: With dead ends: 194 [2018-01-27 23:00:27,777 INFO L226 Difference]: Without dead ends: 124 [2018-01-27 23:00:27,778 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-27 23:00:27,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-01-27 23:00:27,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2018-01-27 23:00:27,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-01-27 23:00:27,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 131 transitions. [2018-01-27 23:00:27,784 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 131 transitions. Word has length 174 [2018-01-27 23:00:27,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:27,784 INFO L432 AbstractCegarLoop]: Abstraction has 123 states and 131 transitions. [2018-01-27 23:00:27,784 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-27 23:00:27,784 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 131 transitions. [2018-01-27 23:00:27,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-01-27 23:00:27,785 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:27,785 INFO L330 BasicCegarLoop]: trace histogram [18, 15, 15, 9, 9, 9, 8, 7, 7, 7, 7, 6, 4, 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] [2018-01-27 23:00:27,785 INFO L371 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:27,793 INFO L82 PathProgramCache]: Analyzing trace with hash -867161405, now seen corresponding path program 12 times [2018-01-27 23:00:27,793 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:27,793 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:27,794 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:27,794 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:27,794 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:27,815 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:27,815 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:27,815 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 23:00:27,827 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-27 23:00:27,843 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:27,846 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:27,852 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:27,858 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:28,014 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:28,344 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:28,558 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:28,934 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:28,934 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:28,971 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:29,069 INFO L134 CoverageAnalysis]: Checked inductivity of 743 backedges. 308 proven. 27 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2018-01-27 23:00:29,088 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:29,089 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-01-27 23:00:29,089 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-27 23:00:29,089 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-27 23:00:29,089 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-01-27 23:00:29,089 INFO L87 Difference]: Start difference. First operand 123 states and 131 transitions. Second operand 7 states. [2018-01-27 23:00:29,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:29,138 INFO L93 Difference]: Finished difference Result 207 states and 227 transitions. [2018-01-27 23:00:29,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-27 23:00:29,138 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 186 [2018-01-27 23:00:29,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:29,139 INFO L225 Difference]: With dead ends: 207 [2018-01-27 23:00:29,140 INFO L226 Difference]: Without dead ends: 133 [2018-01-27 23:00:29,140 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-01-27 23:00:29,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-01-27 23:00:29,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2018-01-27 23:00:29,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-01-27 23:00:29,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 138 transitions. [2018-01-27 23:00:29,147 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 138 transitions. Word has length 186 [2018-01-27 23:00:29,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:29,147 INFO L432 AbstractCegarLoop]: Abstraction has 129 states and 138 transitions. [2018-01-27 23:00:29,147 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-27 23:00:29,147 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 138 transitions. [2018-01-27 23:00:29,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-01-27 23:00:29,149 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:29,149 INFO L330 BasicCegarLoop]: trace histogram [21, 18, 18, 12, 12, 12, 8, 7, 7, 7, 7, 6, 4, 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] [2018-01-27 23:00:29,149 INFO L371 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:29,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1590779629, now seen corresponding path program 13 times [2018-01-27 23:00:29,149 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:29,150 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:29,150 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:29,150 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:29,151 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:29,167 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:29,167 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:29,167 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-27 23:00:29,180 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 23:00:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 23:00:29,243 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:29,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 894 trivial. 0 not checked. [2018-01-27 23:00:29,677 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:29,677 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-01-27 23:00:29,677 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-27 23:00:29,677 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-27 23:00:29,678 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-01-27 23:00:29,678 INFO L87 Difference]: Start difference. First operand 129 states and 138 transitions. Second operand 10 states. [2018-01-27 23:00:29,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:29,929 INFO L93 Difference]: Finished difference Result 221 states and 239 transitions. [2018-01-27 23:00:29,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-27 23:00:29,930 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 204 [2018-01-27 23:00:29,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:29,930 INFO L225 Difference]: With dead ends: 221 [2018-01-27 23:00:29,930 INFO L226 Difference]: Without dead ends: 137 [2018-01-27 23:00:29,931 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-01-27 23:00:29,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-01-27 23:00:29,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 134. [2018-01-27 23:00:29,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-01-27 23:00:29,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 143 transitions. [2018-01-27 23:00:29,937 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 143 transitions. Word has length 204 [2018-01-27 23:00:29,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:29,937 INFO L432 AbstractCegarLoop]: Abstraction has 134 states and 143 transitions. [2018-01-27 23:00:29,937 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-27 23:00:29,937 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 143 transitions. [2018-01-27 23:00:29,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-01-27 23:00:29,938 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:29,939 INFO L330 BasicCegarLoop]: trace histogram [21, 18, 18, 12, 12, 12, 9, 8, 8, 8, 8, 6, 4, 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] [2018-01-27 23:00:29,939 INFO L371 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:29,939 INFO L82 PathProgramCache]: Analyzing trace with hash -375806513, now seen corresponding path program 14 times [2018-01-27 23:00:29,939 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:29,939 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:29,940 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:29,940 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:00:29,940 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:29,956 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:29,956 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:29,957 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 23:00:29,967 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-27 23:00:29,986 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:30,012 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:30,019 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:30,025 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:30,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1050 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 894 trivial. 0 not checked. [2018-01-27 23:00:30,214 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:30,214 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-01-27 23:00:30,215 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-27 23:00:30,215 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-27 23:00:30,216 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-01-27 23:00:30,216 INFO L87 Difference]: Start difference. First operand 134 states and 143 transitions. Second operand 11 states. [2018-01-27 23:00:30,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:30,256 INFO L93 Difference]: Finished difference Result 226 states and 244 transitions. [2018-01-27 23:00:30,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-27 23:00:30,257 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 209 [2018-01-27 23:00:30,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:30,259 INFO L225 Difference]: With dead ends: 226 [2018-01-27 23:00:30,259 INFO L226 Difference]: Without dead ends: 142 [2018-01-27 23:00:30,260 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-01-27 23:00:30,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-01-27 23:00:30,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 139. [2018-01-27 23:00:30,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-01-27 23:00:30,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 148 transitions. [2018-01-27 23:00:30,267 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 148 transitions. Word has length 209 [2018-01-27 23:00:30,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:30,267 INFO L432 AbstractCegarLoop]: Abstraction has 139 states and 148 transitions. [2018-01-27 23:00:30,267 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-27 23:00:30,267 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 148 transitions. [2018-01-27 23:00:30,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-01-27 23:00:30,269 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:30,269 INFO L330 BasicCegarLoop]: trace histogram [21, 18, 18, 12, 12, 12, 10, 9, 9, 9, 9, 6, 4, 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] [2018-01-27 23:00:30,269 INFO L371 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:30,269 INFO L82 PathProgramCache]: Analyzing trace with hash -793486291, now seen corresponding path program 15 times [2018-01-27 23:00:30,270 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:30,270 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:30,270 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:30,271 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:30,271 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:30,295 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:30,295 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:30,295 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-27 23:00:30,308 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 23:00:30,334 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:30,341 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:30,347 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:30,354 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:30,363 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:30,364 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:30,367 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:30,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 412 proven. 24 refuted. 0 times theorem prover too weak. 656 trivial. 0 not checked. [2018-01-27 23:00:30,434 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:30,434 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-01-27 23:00:30,434 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-27 23:00:30,435 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-27 23:00:30,435 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-27 23:00:30,435 INFO L87 Difference]: Start difference. First operand 139 states and 148 transitions. Second operand 6 states. [2018-01-27 23:00:30,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:30,493 INFO L93 Difference]: Finished difference Result 198 states and 213 transitions. [2018-01-27 23:00:30,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-27 23:00:30,495 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 214 [2018-01-27 23:00:30,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:30,496 INFO L225 Difference]: With dead ends: 198 [2018-01-27 23:00:30,496 INFO L226 Difference]: Without dead ends: 149 [2018-01-27 23:00:30,497 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-27 23:00:30,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-01-27 23:00:30,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 145. [2018-01-27 23:00:30,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-01-27 23:00:30,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 154 transitions. [2018-01-27 23:00:30,503 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 154 transitions. Word has length 214 [2018-01-27 23:00:30,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:30,503 INFO L432 AbstractCegarLoop]: Abstraction has 145 states and 154 transitions. [2018-01-27 23:00:30,503 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-27 23:00:30,504 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 154 transitions. [2018-01-27 23:00:30,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-01-27 23:00:30,505 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:30,505 INFO L330 BasicCegarLoop]: trace histogram [21, 18, 18, 12, 12, 12, 10, 9, 9, 9, 9, 6, 5, 4, 4, 4, 4, 4, 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] [2018-01-27 23:00:30,505 INFO L371 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:30,506 INFO L82 PathProgramCache]: Analyzing trace with hash 545835029, now seen corresponding path program 16 times [2018-01-27 23:00:30,506 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:30,506 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:30,507 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:30,507 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:30,507 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:30,523 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:30,523 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:30,523 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-27 23:00:30,540 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 23:00:30,640 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:30,645 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:30,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 914 trivial. 0 not checked. [2018-01-27 23:00:30,964 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:30,964 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-01-27 23:00:30,965 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-27 23:00:30,965 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-27 23:00:30,965 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-01-27 23:00:30,965 INFO L87 Difference]: Start difference. First operand 145 states and 154 transitions. Second operand 12 states. [2018-01-27 23:00:31,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:31,031 INFO L93 Difference]: Finished difference Result 243 states and 261 transitions. [2018-01-27 23:00:31,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-27 23:00:31,032 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 220 [2018-01-27 23:00:31,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:31,033 INFO L225 Difference]: With dead ends: 243 [2018-01-27 23:00:31,034 INFO L226 Difference]: Without dead ends: 153 [2018-01-27 23:00:31,034 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-01-27 23:00:31,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-01-27 23:00:31,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 150. [2018-01-27 23:00:31,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-27 23:00:31,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 159 transitions. [2018-01-27 23:00:31,040 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 159 transitions. Word has length 220 [2018-01-27 23:00:31,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:31,041 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 159 transitions. [2018-01-27 23:00:31,041 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-27 23:00:31,041 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 159 transitions. [2018-01-27 23:00:31,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-01-27 23:00:31,043 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:31,044 INFO L330 BasicCegarLoop]: trace histogram [21, 18, 18, 12, 12, 12, 11, 10, 10, 10, 10, 6, 5, 4, 4, 4, 4, 4, 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] [2018-01-27 23:00:31,044 INFO L371 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:31,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1006957833, now seen corresponding path program 17 times [2018-01-27 23:00:31,044 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:31,044 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:31,045 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:31,045 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:31,045 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:31,063 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:31,063 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:31,063 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 23:00:31,077 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-27 23:00:31,094 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:31,096 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:31,098 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:31,099 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:31,104 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:31,109 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:31,114 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:31,115 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:31,119 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:31,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1159 backedges. 439 proven. 48 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2018-01-27 23:00:31,277 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:31,277 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-01-27 23:00:31,277 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-27 23:00:31,277 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-27 23:00:31,277 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-01-27 23:00:31,278 INFO L87 Difference]: Start difference. First operand 150 states and 159 transitions. Second operand 8 states. [2018-01-27 23:00:31,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:31,359 INFO L93 Difference]: Finished difference Result 246 states and 268 transitions. [2018-01-27 23:00:31,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-27 23:00:31,359 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 225 [2018-01-27 23:00:31,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:31,361 INFO L225 Difference]: With dead ends: 246 [2018-01-27 23:00:31,361 INFO L226 Difference]: Without dead ends: 160 [2018-01-27 23:00:31,361 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-01-27 23:00:31,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-01-27 23:00:31,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 156. [2018-01-27 23:00:31,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-01-27 23:00:31,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 166 transitions. [2018-01-27 23:00:31,368 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 166 transitions. Word has length 225 [2018-01-27 23:00:31,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:31,369 INFO L432 AbstractCegarLoop]: Abstraction has 156 states and 166 transitions. [2018-01-27 23:00:31,369 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-27 23:00:31,369 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 166 transitions. [2018-01-27 23:00:31,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-01-27 23:00:31,370 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:31,370 INFO L330 BasicCegarLoop]: trace histogram [24, 21, 21, 15, 15, 15, 11, 10, 10, 10, 10, 6, 5, 4, 4, 4, 4, 4, 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] [2018-01-27 23:00:31,371 INFO L371 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:31,371 INFO L82 PathProgramCache]: Analyzing trace with hash -2059298527, now seen corresponding path program 18 times [2018-01-27 23:00:31,371 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:31,371 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:31,372 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:31,372 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:31,372 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:31,389 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:31,389 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:31,389 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-27 23:00:31,401 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 23:00:31,426 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:31,430 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:31,437 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:31,444 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:31,455 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:31,468 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:31,478 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:31,515 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:31,625 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