java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/nla-digbench/prodbin.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-0883e75 [2019-09-05 13:20:34,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-05 13:20:34,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-05 13:20:34,160 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-05 13:20:34,161 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-05 13:20:34,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-05 13:20:34,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-05 13:20:34,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-05 13:20:34,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-05 13:20:34,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-05 13:20:34,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-05 13:20:34,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-05 13:20:34,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-05 13:20:34,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-05 13:20:34,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-05 13:20:34,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-05 13:20:34,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-05 13:20:34,175 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-05 13:20:34,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-05 13:20:34,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-05 13:20:34,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-05 13:20:34,181 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-05 13:20:34,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-05 13:20:34,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-05 13:20:34,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-05 13:20:34,188 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-05 13:20:34,189 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-05 13:20:34,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-05 13:20:34,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-05 13:20:34,191 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-05 13:20:34,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-05 13:20:34,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-05 13:20:34,192 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-05 13:20:34,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-05 13:20:34,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-05 13:20:34,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-05 13:20:34,195 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-05 13:20:34,213 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-05 13:20:34,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-05 13:20:34,214 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-05 13:20:34,214 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-05 13:20:34,215 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-05 13:20:34,215 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-05 13:20:34,215 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-05 13:20:34,216 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-05 13:20:34,216 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-05 13:20:34,216 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-05 13:20:34,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-05 13:20:34,217 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-05 13:20:34,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-05 13:20:34,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-05 13:20:34,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-05 13:20:34,219 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-05 13:20:34,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-05 13:20:34,219 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-05 13:20:34,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-05 13:20:34,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-05 13:20:34,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-05 13:20:34,220 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-05 13:20:34,220 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-05 13:20:34,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-05 13:20:34,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-05 13:20:34,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-05 13:20:34,221 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-05 13:20:34,222 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-05 13:20:34,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-05 13:20:34,222 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-05 13:20:34,271 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-05 13:20:34,284 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-05 13:20:34,287 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-05 13:20:34,289 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-05 13:20:34,290 INFO L275 PluginConnector]: CDTParser initialized [2019-09-05 13:20:34,291 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/prodbin.c [2019-09-05 13:20:34,361 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bb1c22f0/1a074cd2ef7241c29f404fc7be3fd194/FLAG456e42f94 [2019-09-05 13:20:34,837 INFO L306 CDTParser]: Found 1 translation units. [2019-09-05 13:20:34,838 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/prodbin.c [2019-09-05 13:20:34,845 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bb1c22f0/1a074cd2ef7241c29f404fc7be3fd194/FLAG456e42f94 [2019-09-05 13:20:35,239 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bb1c22f0/1a074cd2ef7241c29f404fc7be3fd194 [2019-09-05 13:20:35,250 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-05 13:20:35,252 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-05 13:20:35,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-05 13:20:35,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-05 13:20:35,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-05 13:20:35,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 01:20:35" (1/1) ... [2019-09-05 13:20:35,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@df75dc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:20:35, skipping insertion in model container [2019-09-05 13:20:35,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 01:20:35" (1/1) ... [2019-09-05 13:20:35,270 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-05 13:20:35,289 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-05 13:20:35,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 13:20:35,476 INFO L188 MainTranslator]: Completed pre-run [2019-09-05 13:20:35,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 13:20:35,595 INFO L192 MainTranslator]: Completed translation [2019-09-05 13:20:35,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:20:35 WrapperNode [2019-09-05 13:20:35,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-05 13:20:35,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-05 13:20:35,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-05 13:20:35,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-05 13:20:35,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:20:35" (1/1) ... [2019-09-05 13:20:35,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:20:35" (1/1) ... [2019-09-05 13:20:35,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:20:35" (1/1) ... [2019-09-05 13:20:35,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:20:35" (1/1) ... [2019-09-05 13:20:35,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:20:35" (1/1) ... [2019-09-05 13:20:35,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:20:35" (1/1) ... [2019-09-05 13:20:35,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:20:35" (1/1) ... [2019-09-05 13:20:35,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-05 13:20:35,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-05 13:20:35,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-05 13:20:35,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-05 13:20:35,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:20:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory: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 [2019-09-05 13:20:35,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-05 13:20:35,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-05 13:20:35,685 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-05 13:20:35,685 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-05 13:20:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-05 13:20:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2019-09-05 13:20:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-05 13:20:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-05 13:20:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-05 13:20:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-05 13:20:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-05 13:20:35,860 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-05 13:20:35,860 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-05 13:20:35,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 01:20:35 BoogieIcfgContainer [2019-09-05 13:20:35,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-05 13:20:35,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-05 13:20:35,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-05 13:20:35,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-05 13:20:35,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.09 01:20:35" (1/3) ... [2019-09-05 13:20:35,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea2d22a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 01:20:35, skipping insertion in model container [2019-09-05 13:20:35,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:20:35" (2/3) ... [2019-09-05 13:20:35,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea2d22a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 01:20:35, skipping insertion in model container [2019-09-05 13:20:35,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 01:20:35" (3/3) ... [2019-09-05 13:20:35,875 INFO L109 eAbstractionObserver]: Analyzing ICFG prodbin.c [2019-09-05 13:20:35,894 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-05 13:20:35,906 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-05 13:20:35,928 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-05 13:20:35,974 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-05 13:20:35,975 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-05 13:20:35,975 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-05 13:20:35,975 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-05 13:20:35,975 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-05 13:20:35,976 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-05 13:20:35,976 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-05 13:20:35,976 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-05 13:20:35,997 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-09-05 13:20:36,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-05 13:20:36,007 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 13:20:36,008 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 13:20:36,014 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 13:20:36,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 13:20:36,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1560104174, now seen corresponding path program 1 times [2019-09-05 13:20:36,024 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 13:20:36,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:20:36,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:20:36,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:20:36,063 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 13:20:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:20:36,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 13:20:36,128 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 13:20:36,129 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-05 13:20:36,129 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-05 13:20:36,132 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-05 13:20:36,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-05 13:20:36,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-05 13:20:36,145 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2019-09-05 13:20:36,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 13:20:36,161 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2019-09-05 13:20:36,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-05 13:20:36,163 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-09-05 13:20:36,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 13:20:36,172 INFO L225 Difference]: With dead ends: 22 [2019-09-05 13:20:36,173 INFO L226 Difference]: Without dead ends: 17 [2019-09-05 13:20:36,175 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-05 13:20:36,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-09-05 13:20:36,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-09-05 13:20:36,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-09-05 13:20:36,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2019-09-05 13:20:36,215 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 10 [2019-09-05 13:20:36,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 13:20:36,216 INFO L475 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2019-09-05 13:20:36,216 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-05 13:20:36,216 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2019-09-05 13:20:36,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-05 13:20:36,217 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 13:20:36,217 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 13:20:36,217 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 13:20:36,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 13:20:36,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1561891634, now seen corresponding path program 1 times [2019-09-05 13:20:36,218 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 13:20:36,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:20:36,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:20:36,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:20:36,219 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 13:20:36,227 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-05 13:20:36,227 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-05 13:20:36,228 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-05 13:20:36,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:20:36,247 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-05 13:20:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:20:36,260 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2019-09-05 13:20:36,261 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-05 13:20:36,261 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 13:20:36,261 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-05 13:20:36,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:20:36,283 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-05 13:20:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:20:36,300 INFO L256 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 15 conjunts are in the unsatisfiable core [2019-09-05 13:20:36,306 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 13:20:37,670 WARN L188 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 16 [2019-09-05 13:20:37,680 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:20:37,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 13:20:37,734 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-05 13:20:37,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 13:20:37,808 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-09-05 13:20:37,809 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-09-05 13:20:37,809 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-05 13:20:37,810 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-05 13:20:37,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-05 13:20:37,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-09-05 13:20:37,811 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 5 states. [2019-09-05 13:20:37,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 13:20:37,909 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2019-09-05 13:20:37,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-05 13:20:37,910 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-09-05 13:20:37,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 13:20:37,911 INFO L225 Difference]: With dead ends: 26 [2019-09-05 13:20:37,911 INFO L226 Difference]: Without dead ends: 26 [2019-09-05 13:20:37,912 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-05 13:20:37,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-09-05 13:20:37,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2019-09-05 13:20:37,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-09-05 13:20:37,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2019-09-05 13:20:37,925 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 10 [2019-09-05 13:20:37,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 13:20:37,925 INFO L475 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2019-09-05 13:20:37,926 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-05 13:20:37,926 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2019-09-05 13:20:37,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-05 13:20:37,927 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 13:20:37,928 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 13:20:37,928 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 13:20:37,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 13:20:37,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1038075816, now seen corresponding path program 1 times [2019-09-05 13:20:37,932 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 13:20:37,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:20:37,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:20:37,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:20:37,933 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 13:20:37,948 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-05 13:20:37,948 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-05 13:20:37,949 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-09-05 13:20:37,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:20:37,973 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-05 13:20:37,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:20:37,989 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2019-09-05 13:20:37,991 INFO L207 CegarAbsIntRunner]: [0], [4], [13], [19], [22], [26], [33], [36], [38], [41], [43], [44], [45], [46], [48], [49] [2019-09-05 13:20:38,037 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-05 13:20:38,038 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-05 13:20:38,145 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-05 13:20:38,203 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-05 13:20:38,205 INFO L272 AbstractInterpreter]: Visited 16 different actions 26 times. Merged at 4 different actions 4 times. Never widened. Performed 44 root evaluator evaluations with a maximum evaluation depth of 8. Performed 44 inverse root evaluator evaluations with a maximum inverse evaluation depth of 8. Found 1 fixpoints after 1 different actions. Largest state had 7 variables. [2019-09-05 13:20:38,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 13:20:38,209 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-05 13:20:38,209 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 13:20:38,209 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-05 13:20:38,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:20:38,220 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-05 13:20:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:20:38,236 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 25 conjunts are in the unsatisfiable core [2019-09-05 13:20:38,238 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 13:20:39,492 WARN L188 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 16 [2019-09-05 13:20:44,875 WARN L188 SmtUtils]: Spent 5.34 s on a formula simplification. DAG size of input: 29 DAG size of output: 19 [2019-09-05 13:20:49,596 WARN L188 SmtUtils]: Spent 4.69 s on a formula simplification. DAG size of input: 33 DAG size of output: 22 [2019-09-05 13:20:49,603 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:20:49,667 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 13:20:49,667 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-05 13:20:49,735 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:20:53,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 13:20:53,642 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-05 13:20:53,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2019-09-05 13:20:53,643 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-05 13:20:53,643 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-05 13:20:53,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-05 13:20:53,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-09-05 13:20:53,644 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 7 states. [2019-09-05 13:20:53,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 13:20:53,849 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2019-09-05 13:20:53,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-05 13:20:53,850 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-09-05 13:20:53,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 13:20:53,851 INFO L225 Difference]: With dead ends: 35 [2019-09-05 13:20:53,851 INFO L226 Difference]: Without dead ends: 35 [2019-09-05 13:20:53,852 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2019-09-05 13:20:53,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-09-05 13:20:53,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2019-09-05 13:20:53,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-09-05 13:20:53,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2019-09-05 13:20:53,859 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 19 [2019-09-05 13:20:53,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 13:20:53,859 INFO L475 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2019-09-05 13:20:53,859 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-05 13:20:53,859 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2019-09-05 13:20:53,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-05 13:20:53,860 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 13:20:53,860 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 13:20:53,861 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 13:20:53,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 13:20:53,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1481884118, now seen corresponding path program 1 times [2019-09-05 13:20:53,861 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 13:20:53,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:20:53,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:20:53,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:20:53,862 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 13:20:53,867 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-05 13:20:53,867 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-05 13:20:53,867 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-05 13:20:53,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:20:53,881 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-05 13:20:53,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:20:53,891 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2019-09-05 13:20:53,891 INFO L207 CegarAbsIntRunner]: [0], [4], [13], [19], [24], [26], [33], [36], [38], [41], [43], [44], [45], [46], [48], [49] [2019-09-05 13:20:53,894 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-05 13:20:53,894 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-05 13:20:53,924 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-05 13:20:53,993 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-05 13:20:53,993 INFO L272 AbstractInterpreter]: Visited 16 different actions 16 times. Never merged. Never widened. Performed 23 root evaluator evaluations with a maximum evaluation depth of 10. Performed 23 inverse root evaluator evaluations with a maximum inverse evaluation depth of 10. Found 1 fixpoints after 1 different actions. Largest state had 7 variables. [2019-09-05 13:20:53,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 13:20:53,993 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-05 13:20:53,993 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 13:20:53,994 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-05 13:20:54,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:20:54,015 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-05 13:20:54,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:20:54,032 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 20 conjunts are in the unsatisfiable core [2019-09-05 13:20:54,036 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 13:20:55,626 WARN L188 SmtUtils]: Spent 1.58 s on a formula simplification that was a NOOP. DAG size: 16 [2019-09-05 13:20:59,711 WARN L188 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 31 DAG size of output: 19 [2019-09-05 13:21:04,404 WARN L188 SmtUtils]: Spent 4.65 s on a formula simplification. DAG size of input: 24 DAG size of output: 21 [2019-09-05 13:21:04,409 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:21:04,441 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 13:21:04,441 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-05 13:21:04,482 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:21:04,645 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 13:21:04,648 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-05 13:21:04,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2019-09-05 13:21:04,649 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-05 13:21:04,649 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-05 13:21:04,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-05 13:21:04,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-09-05 13:21:04,651 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 12 states. [2019-09-05 13:21:06,673 WARN L188 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 39 DAG size of output: 27 [2019-09-05 13:21:06,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 13:21:06,838 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2019-09-05 13:21:06,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-05 13:21:06,839 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2019-09-05 13:21:06,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 13:21:06,841 INFO L225 Difference]: With dead ends: 55 [2019-09-05 13:21:06,842 INFO L226 Difference]: Without dead ends: 55 [2019-09-05 13:21:06,842 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2019-09-05 13:21:06,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-09-05 13:21:06,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2019-09-05 13:21:06,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-09-05 13:21:06,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 65 transitions. [2019-09-05 13:21:06,852 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 65 transitions. Word has length 19 [2019-09-05 13:21:06,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 13:21:06,853 INFO L475 AbstractCegarLoop]: Abstraction has 53 states and 65 transitions. [2019-09-05 13:21:06,853 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-05 13:21:06,853 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 65 transitions. [2019-09-05 13:21:06,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-09-05 13:21:06,854 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 13:21:06,855 INFO L399 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 13:21:06,855 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 13:21:06,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 13:21:06,855 INFO L82 PathProgramCache]: Analyzing trace with hash 776909625, now seen corresponding path program 1 times [2019-09-05 13:21:06,855 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 13:21:06,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:21:06,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:21:06,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:21:06,856 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 13:21:06,860 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-05 13:21:06,861 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-05 13:21:06,861 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-05 13:21:06,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:21:06,872 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-05 13:21:06,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:21:06,881 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 26 with the following transitions: [2019-09-05 13:21:06,882 INFO L207 CegarAbsIntRunner]: [0], [4], [13], [17], [19], [22], [26], [33], [36], [38], [41], [43], [44], [45], [46], [48], [49], [50] [2019-09-05 13:21:06,883 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-05 13:21:06,883 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-05 13:21:06,895 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-05 13:21:06,911 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-05 13:21:06,912 INFO L272 AbstractInterpreter]: Visited 18 different actions 40 times. Merged at 5 different actions 5 times. Never widened. Performed 58 root evaluator evaluations with a maximum evaluation depth of 8. Performed 58 inverse root evaluator evaluations with a maximum inverse evaluation depth of 8. Found 1 fixpoints after 1 different actions. Largest state had 7 variables. [2019-09-05 13:21:06,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 13:21:06,912 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-05 13:21:06,912 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 13:21:06,912 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-05 13:21:06,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:21:06,937 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-05 13:21:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:21:06,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-05 13:21:06,965 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 13:21:07,008 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:21:07,026 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-05 13:21:07,026 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-05 13:21:07,096 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:21:07,098 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:21:07,135 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-05 13:21:07,139 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-05 13:21:07,139 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2019-09-05 13:21:07,140 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-05 13:21:07,141 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-05 13:21:07,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-05 13:21:07,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-09-05 13:21:07,142 INFO L87 Difference]: Start difference. First operand 53 states and 65 transitions. Second operand 13 states. [2019-09-05 13:21:07,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 13:21:07,324 INFO L93 Difference]: Finished difference Result 59 states and 70 transitions. [2019-09-05 13:21:07,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-05 13:21:07,325 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2019-09-05 13:21:07,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 13:21:07,327 INFO L225 Difference]: With dead ends: 59 [2019-09-05 13:21:07,328 INFO L226 Difference]: Without dead ends: 54 [2019-09-05 13:21:07,328 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2019-09-05 13:21:07,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-09-05 13:21:07,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2019-09-05 13:21:07,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-09-05 13:21:07,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2019-09-05 13:21:07,338 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 25 [2019-09-05 13:21:07,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 13:21:07,338 INFO L475 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2019-09-05 13:21:07,338 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-05 13:21:07,339 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2019-09-05 13:21:07,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-09-05 13:21:07,340 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 13:21:07,340 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 13:21:07,340 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 13:21:07,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 13:21:07,341 INFO L82 PathProgramCache]: Analyzing trace with hash 999927412, now seen corresponding path program 1 times [2019-09-05 13:21:07,341 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 13:21:07,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:21:07,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:21:07,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:21:07,342 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 13:21:07,349 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-05 13:21:07,350 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-05 13:21:07,350 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/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 [2019-09-05 13:21:07,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:21:07,363 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-05 13:21:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:21:07,382 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 29 with the following transitions: [2019-09-05 13:21:07,382 INFO L207 CegarAbsIntRunner]: [0], [4], [13], [19], [22], [24], [26], [33], [36], [38], [41], [43], [44], [45], [46], [48], [49] [2019-09-05 13:21:07,388 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-05 13:21:07,388 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-05 13:21:07,408 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-05 13:21:07,483 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-05 13:21:07,484 INFO L272 AbstractInterpreter]: Visited 17 different actions 29 times. Merged at 5 different actions 5 times. Never widened. Performed 52 root evaluator evaluations with a maximum evaluation depth of 10. Performed 52 inverse root evaluator evaluations with a maximum inverse evaluation depth of 10. Found 3 fixpoints after 3 different actions. Largest state had 7 variables. [2019-09-05 13:21:07,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 13:21:07,484 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-05 13:21:07,485 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 13:21:07,485 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-05 13:21:07,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:21:07,503 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-05 13:21:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:21:07,520 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2019-09-05 13:21:07,522 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 13:21:08,912 WARN L188 SmtUtils]: Spent 1.38 s on a formula simplification that was a NOOP. DAG size: 13 [2019-09-05 13:21:10,275 WARN L188 SmtUtils]: Spent 1.35 s on a formula simplification that was a NOOP. DAG size: 14 [2019-09-05 13:21:10,280 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:21:10,281 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:21:15,085 WARN L188 SmtUtils]: Spent 4.78 s on a formula simplification. DAG size of input: 36 DAG size of output: 23 [2019-09-05 13:21:16,880 WARN L188 SmtUtils]: Spent 1.76 s on a formula simplification that was a NOOP. DAG size: 28 [2019-09-05 13:21:22,031 WARN L188 SmtUtils]: Spent 5.12 s on a formula simplification. DAG size of input: 42 DAG size of output: 31 [2019-09-05 13:21:22,035 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:21:22,036 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:21:26,915 WARN L188 SmtUtils]: Spent 4.83 s on a formula simplification. DAG size of input: 49 DAG size of output: 37 [2019-09-05 13:21:26,920 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:21:26,955 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-05 13:21:26,956 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-05 13:21:26,988 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:21:27,166 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:21:27,167 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:21:27,168 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:21:27,168 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:21:27,295 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:21:27,296 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:21:27,307 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:21:27,341 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:21:42,425 WARN L188 SmtUtils]: Spent 4.39 s on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2019-09-05 13:21:42,427 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:21:52,343 WARN L188 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 54 DAG size of output: 35 [2019-09-05 13:21:52,366 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-05 13:21:52,370 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-05 13:21:52,370 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2019-09-05 13:21:52,370 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-05 13:21:52,370 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-05 13:21:52,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-05 13:21:52,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=299, Unknown=8, NotChecked=0, Total=380 [2019-09-05 13:21:52,371 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand 20 states. [2019-09-05 13:21:56,470 WARN L188 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 39 DAG size of output: 18 [2019-09-05 13:22:00,646 WARN L188 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2019-09-05 13:22:02,381 WARN L188 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 24 [2019-09-05 13:22:04,772 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2019-09-05 13:22:11,489 WARN L188 SmtUtils]: Spent 4.16 s on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2019-09-05 13:22:12,605 WARN L188 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 62 DAG size of output: 40 [2019-09-05 13:22:13,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 13:22:13,033 INFO L93 Difference]: Finished difference Result 84 states and 102 transitions. [2019-09-05 13:22:13,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-05 13:22:13,039 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 28 [2019-09-05 13:22:13,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 13:22:13,046 INFO L225 Difference]: With dead ends: 84 [2019-09-05 13:22:13,047 INFO L226 Difference]: Without dead ends: 84 [2019-09-05 13:22:13,047 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 59.2s TimeCoverageRelationStatistics Valid=180, Invalid=682, Unknown=8, NotChecked=0, Total=870 [2019-09-05 13:22:13,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2019-09-05 13:22:13,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2019-09-05 13:22:13,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2019-09-05 13:22:13,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 102 transitions. [2019-09-05 13:22:13,057 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 102 transitions. Word has length 28 [2019-09-05 13:22:13,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 13:22:13,058 INFO L475 AbstractCegarLoop]: Abstraction has 84 states and 102 transitions. [2019-09-05 13:22:13,058 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-05 13:22:13,058 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 102 transitions. [2019-09-05 13:22:13,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-09-05 13:22:13,060 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 13:22:13,060 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 13:22:13,060 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 13:22:13,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 13:22:13,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1797628174, now seen corresponding path program 2 times [2019-09-05 13:22:13,061 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 13:22:13,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:22:13,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:22:13,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:22:13,062 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 13:22:13,066 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-05 13:22:13,066 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-05 13:22:13,066 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/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 [2019-09-05 13:22:13,084 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-05 13:22:13,084 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-05 13:22:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:22:13,105 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-05 13:22:13,105 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-05 13:22:13,106 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 13:22:13,106 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-05 13:22:13,122 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-05 13:22:13,122 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2019-09-05 13:22:13,187 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-09-05 13:22:13,188 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-05 13:22:13,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 23 conjunts are in the unsatisfiable core [2019-09-05 13:22:13,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 13:22:13,205 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:22:13,207 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:22:13,259 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:22:13,260 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:22:13,294 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:22:13,295 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:22:13,594 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2019-09-05 13:22:13,665 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:22:13,666 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:22:14,409 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:22:14,461 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 42 proven. 3 refuted. 4 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-05 13:22:14,461 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-05 13:22:14,494 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:22:14,939 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:22:14,940 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:22:14,941 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:22:14,942 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:22:19,238 WARN L188 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 36 DAG size of output: 7 [2019-09-05 13:22:19,240 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:22:19,241 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:22:19,242 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:22:19,252 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:22:19,257 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:22:19,258 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:22:19,296 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:22:19,656 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:22:19,656 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:22:19,657 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:22:19,802 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 13:22:19,832 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 40 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-09-05 13:22:19,839 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-05 13:22:19,839 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2019-09-05 13:22:19,839 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-05 13:22:19,841 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-05 13:22:19,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-05 13:22:19,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=304, Unknown=6, NotChecked=0, Total=380 [2019-09-05 13:22:19,842 INFO L87 Difference]: Start difference. First operand 84 states and 102 transitions. Second operand 20 states. [2019-09-05 13:22:20,054 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2019-09-05 13:22:20,975 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2019-09-05 13:22:21,884 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2019-09-05 13:22:25,870 WARN L188 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2019-09-05 13:22:25,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 13:22:25,884 INFO L93 Difference]: Finished difference Result 86 states and 105 transitions. [2019-09-05 13:22:25,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-05 13:22:25,886 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 46 [2019-09-05 13:22:25,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 13:22:25,886 INFO L225 Difference]: With dead ends: 86 [2019-09-05 13:22:25,886 INFO L226 Difference]: Without dead ends: 0 [2019-09-05 13:22:25,887 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 66 SyntacticMatches, 9 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=144, Invalid=497, Unknown=9, NotChecked=0, Total=650 [2019-09-05 13:22:25,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-05 13:22:25,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-05 13:22:25,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-05 13:22:25,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-05 13:22:25,887 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2019-09-05 13:22:25,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 13:22:25,888 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-05 13:22:25,888 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-05 13:22:25,888 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-05 13:22:25,888 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-05 13:22:25,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.09 01:22:25 BoogieIcfgContainer [2019-09-05 13:22:25,893 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-05 13:22:25,895 INFO L168 Benchmark]: Toolchain (without parser) took 110643.35 ms. Allocated memory was 130.5 MB in the beginning and 330.8 MB in the end (delta: 200.3 MB). Free memory was 86.0 MB in the beginning and 163.9 MB in the end (delta: -77.9 MB). Peak memory consumption was 122.4 MB. Max. memory is 7.1 GB. [2019-09-05 13:22:25,896 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 130.5 MB. Free memory was 104.8 MB in the beginning and 104.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-05 13:22:25,898 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.26 ms. Allocated memory was 130.5 MB in the beginning and 197.1 MB in the end (delta: 66.6 MB). Free memory was 85.8 MB in the beginning and 176.7 MB in the end (delta: -90.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2019-09-05 13:22:25,899 INFO L168 Benchmark]: Boogie Preprocessor took 32.26 ms. Allocated memory is still 197.1 MB. Free memory was 176.7 MB in the beginning and 172.8 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2019-09-05 13:22:25,899 INFO L168 Benchmark]: RCFGBuilder took 235.80 ms. Allocated memory is still 197.1 MB. Free memory was 172.8 MB in the beginning and 160.9 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2019-09-05 13:22:25,900 INFO L168 Benchmark]: TraceAbstraction took 110028.06 ms. Allocated memory was 197.1 MB in the beginning and 330.8 MB in the end (delta: 133.7 MB). Free memory was 160.3 MB in the beginning and 163.9 MB in the end (delta: -3.6 MB). Peak memory consumption was 130.1 MB. Max. memory is 7.1 GB. [2019-09-05 13:22:25,904 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 130.5 MB. Free memory was 104.8 MB in the beginning and 104.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 341.26 ms. Allocated memory was 130.5 MB in the beginning and 197.1 MB in the end (delta: 66.6 MB). Free memory was 85.8 MB in the beginning and 176.7 MB in the end (delta: -90.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.26 ms. Allocated memory is still 197.1 MB. Free memory was 176.7 MB in the beginning and 172.8 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 235.80 ms. Allocated memory is still 197.1 MB. Free memory was 172.8 MB in the beginning and 160.9 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 110028.06 ms. Allocated memory was 197.1 MB in the beginning and 330.8 MB in the end (delta: 133.7 MB). Free memory was 160.3 MB in the beginning and 163.9 MB in the end (delta: -3.6 MB). Peak memory consumption was 130.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. SAFE Result, 109.9s OverallTime, 7 OverallIterations, 5 TraceHistogramMax, 29.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 102 SDtfs, 131 SDslu, 455 SDs, 0 SdLazy, 602 SolverSat, 106 SolverUnsat, 18 SolverUnknown, 0 SolverNotchecked, 9.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 317 GetRequests, 210 SyntacticMatches, 9 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 98.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.4s AbstIntTime, 4 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 8 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 79.2s InterpolantComputationTime, 304 NumberOfCodeBlocks, 295 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 291 ConstructedInterpolants, 54 QuantifiedInterpolants, 85947 SizeOfPredicates, 29 NumberOfNonLiveVariables, 345 ConjunctsInSsa, 123 ConjunctsInUnsatCore, 13 InterpolantComputations, 4 PerfectInterpolantSequences, 166/212 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...