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-c6af20d [2019-09-03 21:13:03,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 21:13:03,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 21:13:03,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-03 21:13:03,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-03 21:13:03,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-03 21:13:03,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-03 21:13:03,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-03 21:13:03,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-03 21:13:03,277 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-03 21:13:03,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-03 21:13:03,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-09-03 21:13:03,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-03 21:13:03,297 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-03 21:13:03,298 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-03 21:13:03,299 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-03 21:13:03,300 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-03 21:13:03,300 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-03 21:13:03,301 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-03 21:13:03,301 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-03 21:13:03,301 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 21:13:03,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 21:13:03,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 21:13:03,303 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 [2019-09-03 21:13:03,318 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 21:13:03,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 21:13:03,318 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-03 21:13:03,319 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-03 21:13:03,319 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-03 21:13:03,319 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-03 21:13:03,320 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-03 21:13:03,320 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-03 21:13:03,320 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-03 21:13:03,320 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-03 21:13:03,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 21:13:03,321 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 21:13:03,321 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 21:13:03,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 21:13:03,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 21:13:03,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 21:13:03,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 21:13:03,322 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 21:13:03,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 21:13:03,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 21:13:03,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 21:13:03,323 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-03 21:13:03,323 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 21:13:03,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 21:13:03,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 21:13:03,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 21:13:03,324 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-03 21:13:03,324 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 21:13:03,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 21:13:03,324 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-03 21:13:03,355 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 21:13:03,366 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 21:13:03,369 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 21:13:03,370 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 21:13:03,370 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 21:13:03,371 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/prodbin.c [2019-09-03 21:13:03,429 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fa5e6f8e/dc5ff0958486408c87c9492436ae2890/FLAGf2ead96f9 [2019-09-03 21:13:03,820 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 21:13:03,821 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/prodbin.c [2019-09-03 21:13:03,827 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fa5e6f8e/dc5ff0958486408c87c9492436ae2890/FLAGf2ead96f9 [2019-09-03 21:13:04,244 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fa5e6f8e/dc5ff0958486408c87c9492436ae2890 [2019-09-03 21:13:04,254 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 21:13:04,256 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 21:13:04,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 21:13:04,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 21:13:04,261 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 21:13:04,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 09:13:04" (1/1) ... [2019-09-03 21:13:04,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a823ade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:13:04, skipping insertion in model container [2019-09-03 21:13:04,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 09:13:04" (1/1) ... [2019-09-03 21:13:04,273 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 21:13:04,290 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 21:13:04,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 21:13:04,538 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 21:13:04,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 21:13:04,578 INFO L192 MainTranslator]: Completed translation [2019-09-03 21:13:04,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:13:04 WrapperNode [2019-09-03 21:13:04,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 21:13:04,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 21:13:04,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 21:13:04,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 21:13:04,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:13:04" (1/1) ... [2019-09-03 21:13:04,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:13:04" (1/1) ... [2019-09-03 21:13:04,721 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:13:04" (1/1) ... [2019-09-03 21:13:04,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:13:04" (1/1) ... [2019-09-03 21:13:04,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:13:04" (1/1) ... [2019-09-03 21:13:04,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:13:04" (1/1) ... [2019-09-03 21:13:04,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:13:04" (1/1) ... [2019-09-03 21:13:04,744 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 21:13:04,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 21:13:04,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 21:13:04,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 21:13:04,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:13:04" (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 [2019-09-03 21:13:04,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 21:13:04,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 21:13:04,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 21:13:04,809 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 21:13:04,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 21:13:04,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2019-09-03 21:13:04,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-03 21:13:04,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 21:13:04,809 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 21:13:04,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 21:13:04,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 21:13:04,996 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 21:13:04,997 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-03 21:13:04,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 09:13:04 BoogieIcfgContainer [2019-09-03 21:13:04,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 21:13:05,007 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 21:13:05,007 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 21:13:05,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 21:13:05,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 09:13:04" (1/3) ... [2019-09-03 21:13:05,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45926126 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 09:13:05, skipping insertion in model container [2019-09-03 21:13:05,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:13:04" (2/3) ... [2019-09-03 21:13:05,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45926126 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 09:13:05, skipping insertion in model container [2019-09-03 21:13:05,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 09:13:04" (3/3) ... [2019-09-03 21:13:05,026 INFO L109 eAbstractionObserver]: Analyzing ICFG prodbin.c [2019-09-03 21:13:05,048 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 21:13:05,064 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 21:13:05,096 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 21:13:05,134 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 21:13:05,134 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-03 21:13:05,134 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 21:13:05,134 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 21:13:05,135 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 21:13:05,135 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 21:13:05,135 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 21:13:05,135 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 21:13:05,147 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-09-03 21:13:05,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-03 21:13:05,155 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 21:13:05,156 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 21:13:05,157 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 21:13:05,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 21:13:05,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1560104174, now seen corresponding path program 1 times [2019-09-03 21:13:05,163 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 21:13:05,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:13:05,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:13:05,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:13:05,207 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 21:13:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:13:05,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 21:13:05,277 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 21:13:05,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-03 21:13:05,278 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 21:13:05,282 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-03 21:13:05,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-03 21:13:05,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 21:13:05,298 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2019-09-03 21:13:05,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 21:13:05,315 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2019-09-03 21:13:05,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-03 21:13:05,317 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-09-03 21:13:05,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 21:13:05,325 INFO L225 Difference]: With dead ends: 22 [2019-09-03 21:13:05,325 INFO L226 Difference]: Without dead ends: 17 [2019-09-03 21:13:05,326 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 [2019-09-03 21:13:05,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-09-03 21:13:05,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-09-03 21:13:05,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-09-03 21:13:05,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2019-09-03 21:13:05,361 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 10 [2019-09-03 21:13:05,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 21:13:05,362 INFO L475 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2019-09-03 21:13:05,362 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-03 21:13:05,362 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2019-09-03 21:13:05,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-03 21:13:05,363 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 21:13:05,363 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 21:13:05,363 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 21:13:05,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 21:13:05,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1561891634, now seen corresponding path program 1 times [2019-09-03 21:13:05,364 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 21:13:05,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:13:05,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:13:05,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:13:05,365 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 21:13:05,372 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 21:13:05,373 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 21:13:05,373 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 [2019-09-03 21:13:05,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:13:05,393 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-03 21:13:05,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:13:05,408 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2019-09-03 21:13:05,409 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-03 21:13:05,409 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 21:13:05,410 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 [2019-09-03 21:13:05,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:13:05,423 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-03 21:13:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:13:05,439 INFO L256 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 15 conjunts are in the unsatisfiable core [2019-09-03 21:13:05,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 21:13:06,755 WARN L188 SmtUtils]: Spent 1.28 s on a formula simplification that was a NOOP. DAG size: 16 [2019-09-03 21:13:06,765 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:13:06,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 21:13:06,804 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-03 21:13:06,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 21:13:06,870 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-09-03 21:13:06,871 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-09-03 21:13:06,871 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 21:13:06,872 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-03 21:13:06,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-03 21:13:06,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-09-03 21:13:06,873 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 5 states. [2019-09-03 21:13:06,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 21:13:06,969 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2019-09-03 21:13:06,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-03 21:13:06,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-09-03 21:13:06,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 21:13:06,971 INFO L225 Difference]: With dead ends: 26 [2019-09-03 21:13:06,971 INFO L226 Difference]: Without dead ends: 26 [2019-09-03 21:13:06,972 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-03 21:13:06,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-09-03 21:13:06,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2019-09-03 21:13:06,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-09-03 21:13:06,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2019-09-03 21:13:06,979 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 10 [2019-09-03 21:13:06,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 21:13:06,979 INFO L475 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2019-09-03 21:13:06,979 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-03 21:13:06,980 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2019-09-03 21:13:06,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-03 21:13:06,980 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 21:13:06,981 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 21:13:06,981 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 21:13:06,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 21:13:06,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1038075816, now seen corresponding path program 1 times [2019-09-03 21:13:06,982 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 21:13:06,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:13:06,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:13:06,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:13:06,984 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 21:13:06,990 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 21:13:06,990 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 21:13:06,990 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) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 21:13:07,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:13:07,008 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-03 21:13:07,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:13:07,023 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2019-09-03 21:13:07,024 INFO L207 CegarAbsIntRunner]: [0], [4], [13], [19], [22], [26], [33], [36], [38], [41], [43], [44], [45], [46], [48], [49] [2019-09-03 21:13:07,066 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-03 21:13:07,066 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-03 21:13:07,168 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-03 21:13:07,236 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-03 21:13:07,239 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. [2019-09-03 21:13:07,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 21:13:07,243 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-03 21:13:07,243 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 21:13:07,243 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 [2019-09-03 21:13:07,255 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:13:07,255 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-03 21:13:07,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:13:07,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 25 conjunts are in the unsatisfiable core [2019-09-03 21:13:07,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 21:13:08,532 WARN L188 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 16 [2019-09-03 21:13:13,864 WARN L188 SmtUtils]: Spent 5.29 s on a formula simplification. DAG size of input: 29 DAG size of output: 19 [2019-09-03 21:13:18,527 WARN L188 SmtUtils]: Spent 4.64 s on a formula simplification. DAG size of input: 33 DAG size of output: 22 [2019-09-03 21:13:18,535 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:13:18,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 21:13:18,607 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-03 21:13:18,658 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:13:22,441 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 21:13:22,444 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-03 21:13:22,444 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2019-09-03 21:13:22,444 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 21:13:22,445 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-03 21:13:22,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-03 21:13:22,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-09-03 21:13:22,446 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 7 states. [2019-09-03 21:13:22,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 21:13:22,627 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2019-09-03 21:13:22,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-03 21:13:22,627 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-09-03 21:13:22,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 21:13:22,629 INFO L225 Difference]: With dead ends: 35 [2019-09-03 21:13:22,629 INFO L226 Difference]: Without dead ends: 35 [2019-09-03 21:13:22,632 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2019-09-03 21:13:22,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-09-03 21:13:22,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2019-09-03 21:13:22,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-09-03 21:13:22,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2019-09-03 21:13:22,640 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 19 [2019-09-03 21:13:22,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 21:13:22,640 INFO L475 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2019-09-03 21:13:22,641 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-03 21:13:22,641 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2019-09-03 21:13:22,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-03 21:13:22,643 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 21:13:22,643 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 21:13:22,644 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 21:13:22,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 21:13:22,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1481884118, now seen corresponding path program 1 times [2019-09-03 21:13:22,645 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 21:13:22,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:13:22,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:13:22,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:13:22,647 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 21:13:22,659 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 21:13:22,659 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 21:13:22,659 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) [2019-09-03 21:13:22,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:13:22,675 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 21:13:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:13:22,689 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2019-09-03 21:13:22,689 INFO L207 CegarAbsIntRunner]: [0], [4], [13], [19], [24], [26], [33], [36], [38], [41], [43], [44], [45], [46], [48], [49] [2019-09-03 21:13:22,691 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-03 21:13:22,691 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-03 21:13:22,715 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-03 21:13:22,771 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-03 21:13:22,771 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. [2019-09-03 21:13:22,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 21:13:22,772 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-03 21:13:22,772 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 21:13:22,772 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) [2019-09-03 21:13:22,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:13:22,799 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 21:13:22,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:13:22,817 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 20 conjunts are in the unsatisfiable core [2019-09-03 21:13:22,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 21:13:24,089 WARN L188 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 16 [2019-09-03 21:13:28,020 WARN L188 SmtUtils]: Spent 3.90 s on a formula simplification. DAG size of input: 31 DAG size of output: 19 [2019-09-03 21:13:32,551 WARN L188 SmtUtils]: Spent 4.52 s on a formula simplification. DAG size of input: 24 DAG size of output: 21 [2019-09-03 21:13:32,556 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:13:32,595 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 21:13:32,595 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-03 21:13:32,651 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:13:32,820 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 21:13:32,823 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-03 21:13:32,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2019-09-03 21:13:32,823 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-03 21:13:32,824 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-03 21:13:32,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-03 21:13:32,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-09-03 21:13:32,825 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 12 states. [2019-09-03 21:13:34,809 WARN L188 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 39 DAG size of output: 27 [2019-09-03 21:13:34,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 21:13:34,957 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2019-09-03 21:13:34,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-03 21:13:34,958 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2019-09-03 21:13:34,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 21:13:34,960 INFO L225 Difference]: With dead ends: 55 [2019-09-03 21:13:34,960 INFO L226 Difference]: Without dead ends: 55 [2019-09-03 21:13:34,960 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2019-09-03 21:13:34,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-09-03 21:13:34,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2019-09-03 21:13:34,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-09-03 21:13:34,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 65 transitions. [2019-09-03 21:13:34,974 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 65 transitions. Word has length 19 [2019-09-03 21:13:34,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 21:13:34,974 INFO L475 AbstractCegarLoop]: Abstraction has 53 states and 65 transitions. [2019-09-03 21:13:34,974 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-03 21:13:34,974 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 65 transitions. [2019-09-03 21:13:34,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-09-03 21:13:34,976 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 21:13:34,976 INFO L399 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 21:13:34,976 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 21:13:34,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 21:13:34,977 INFO L82 PathProgramCache]: Analyzing trace with hash 776909625, now seen corresponding path program 1 times [2019-09-03 21:13:34,977 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 21:13:34,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:13:34,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:13:34,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:13:34,978 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 21:13:34,982 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 21:13:34,982 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 21:13:34,982 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 [2019-09-03 21:13:34,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:13:34,993 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-03 21:13:34,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:13:35,003 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 26 with the following transitions: [2019-09-03 21:13:35,003 INFO L207 CegarAbsIntRunner]: [0], [4], [13], [17], [19], [22], [26], [33], [36], [38], [41], [43], [44], [45], [46], [48], [49], [50] [2019-09-03 21:13:35,005 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-03 21:13:35,005 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-03 21:13:35,017 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-03 21:13:35,035 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-03 21:13:35,035 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. [2019-09-03 21:13:35,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 21:13:35,036 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-03 21:13:35,036 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 21:13:35,036 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 [2019-09-03 21:13:35,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:13:35,058 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-03 21:13:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:13:35,070 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-03 21:13:35,072 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 21:13:35,119 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:13:35,141 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-03 21:13:35,142 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-03 21:13:35,206 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:13:35,211 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:13:35,241 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-03 21:13:35,245 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-03 21:13:35,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2019-09-03 21:13:35,245 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-03 21:13:35,246 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-03 21:13:35,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-03 21:13:35,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-09-03 21:13:35,247 INFO L87 Difference]: Start difference. First operand 53 states and 65 transitions. Second operand 13 states. [2019-09-03 21:13:36,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 21:13:36,263 INFO L93 Difference]: Finished difference Result 59 states and 70 transitions. [2019-09-03 21:13:36,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-03 21:13:36,265 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2019-09-03 21:13:36,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 21:13:36,266 INFO L225 Difference]: With dead ends: 59 [2019-09-03 21:13:36,267 INFO L226 Difference]: Without dead ends: 54 [2019-09-03 21:13:36,267 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 [2019-09-03 21:13:36,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-09-03 21:13:36,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2019-09-03 21:13:36,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-09-03 21:13:36,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2019-09-03 21:13:36,284 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 25 [2019-09-03 21:13:36,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 21:13:36,285 INFO L475 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2019-09-03 21:13:36,285 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-03 21:13:36,285 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2019-09-03 21:13:36,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-09-03 21:13:36,287 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 21:13:36,288 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 21:13:36,288 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 21:13:36,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 21:13:36,288 INFO L82 PathProgramCache]: Analyzing trace with hash 999927412, now seen corresponding path program 1 times [2019-09-03 21:13:36,288 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 21:13:36,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:13:36,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:13:36,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:13:36,291 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 21:13:36,302 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 21:13:36,302 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 21:13:36,303 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) [2019-09-03 21:13:36,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:13:36,321 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 21:13:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:13:36,340 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 29 with the following transitions: [2019-09-03 21:13:36,340 INFO L207 CegarAbsIntRunner]: [0], [4], [13], [19], [22], [24], [26], [33], [36], [38], [41], [43], [44], [45], [46], [48], [49] [2019-09-03 21:13:36,344 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-03 21:13:36,344 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-03 21:13:36,363 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-03 21:13:36,438 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-03 21:13:36,438 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. [2019-09-03 21:13:36,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 21:13:36,439 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-03 21:13:36,439 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 21:13:36,439 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 [2019-09-03 21:13:36,460 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:13:36,460 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-03 21:13:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:13:36,479 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2019-09-03 21:13:36,481 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 21:13:37,902 WARN L188 SmtUtils]: Spent 1.41 s on a formula simplification that was a NOOP. DAG size: 13 [2019-09-03 21:13:39,222 WARN L188 SmtUtils]: Spent 1.30 s on a formula simplification that was a NOOP. DAG size: 14 [2019-09-03 21:13:39,223 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:13:39,224 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:13:43,757 WARN L188 SmtUtils]: Spent 4.51 s on a formula simplification. DAG size of input: 36 DAG size of output: 23 [2019-09-03 21:13:45,547 WARN L188 SmtUtils]: Spent 1.74 s on a formula simplification that was a NOOP. DAG size: 28 [2019-09-03 21:13:50,378 WARN L188 SmtUtils]: Spent 4.79 s on a formula simplification. DAG size of input: 42 DAG size of output: 31 [2019-09-03 21:13:50,381 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:13:50,381 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:13:55,305 WARN L188 SmtUtils]: Spent 4.86 s on a formula simplification. DAG size of input: 49 DAG size of output: 37 [2019-09-03 21:13:55,310 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:13:55,347 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-03 21:13:55,347 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-03 21:13:55,376 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:13:55,538 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:13:55,539 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:13:55,539 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:13:55,540 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:13:55,817 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:13:55,818 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:13:55,824 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:13:55,867 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:13:58,863 WARN L188 SmtUtils]: Spent 830.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2019-09-03 21:13:58,865 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:14:07,484 WARN L188 SmtUtils]: Spent 4.01 s on a formula simplification that was a NOOP. DAG size: 54 [2019-09-03 21:14:19,792 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-03 21:14:19,799 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-03 21:14:19,800 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2019-09-03 21:14:19,800 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-03 21:14:19,800 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-03 21:14:19,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-03 21:14:19,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=303, Unknown=3, NotChecked=0, Total=380 [2019-09-03 21:14:19,801 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand 20 states. [2019-09-03 21:14:23,398 WARN L188 SmtUtils]: Spent 3.55 s on a formula simplification. DAG size of input: 39 DAG size of output: 18 [2019-09-03 21:14:27,412 WARN L188 SmtUtils]: Spent 3.90 s on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2019-09-03 21:14:29,671 WARN L188 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 37 DAG size of output: 24 [2019-09-03 21:14:34,228 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (= (mod c_main_~y~0 2) 0)) (.cse0 (* c_main_~b~0 c_main_~a~0)) (.cse3 (* 2 c_main_~x~0)) (.cse4 (div c_main_~y~0 2))) (and (= (+ (* c_main_~y~0 c_main_~x~0) c_main_~z~0) .cse0) (forall ((v_prenex_2 Int) (v_prenex_1 Int) (v_main_~y~0_29 Int)) (let ((.cse1 (* c_main_~b~0 c_main_~a~0))) (or (not (= .cse1 (+ (* (* 2 c_main_~x~0) v_prenex_2) v_prenex_1))) (< v_prenex_2 (div v_main_~y~0_29 2)) (< (+ v_main_~y~0_29 1) c_main_~y~0) (= .cse1 (+ (* (* 4 c_main_~x~0) (+ (div v_prenex_2 2) 1)) v_prenex_1)) (= 0 (mod v_prenex_2 2)) (not (= 0 (mod v_main_~y~0_29 2))) (<= 0 v_prenex_2)))) (or (and (< c_main_~y~0 0) (not .cse2)) (= .cse0 (+ (* .cse3 .cse4) c_main_~z~0))) (forall ((main_~z~0 Int) (v_main_~y~0_28 Int) (v_main_~y~0_29 Int)) (let ((.cse5 (* c_main_~b~0 c_main_~a~0))) (or (< v_main_~y~0_28 (+ (div v_main_~y~0_29 2) 1)) (< (+ v_main_~y~0_29 1) c_main_~y~0) (<= 0 v_main_~y~0_28) (= .cse5 (+ main_~z~0 (* (* 4 c_main_~x~0) (+ (div v_main_~y~0_28 2) 1)))) (= 0 (mod v_main_~y~0_28 2)) (not (= (+ main_~z~0 (* (* 2 c_main_~x~0) v_main_~y~0_28)) .cse5))))) (or .cse2 (= .cse0 (+ c_main_~z~0 (* .cse3 (+ .cse4 1)))) (<= 0 c_main_~y~0)))) is different from false [2019-09-03 21:14:40,526 WARN L188 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2019-09-03 21:14:43,792 WARN L188 SmtUtils]: Spent 3.09 s on a formula simplification. DAG size of input: 75 DAG size of output: 40 [2019-09-03 21:14:46,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 21:14:46,309 INFO L93 Difference]: Finished difference Result 84 states and 102 transitions. [2019-09-03 21:14:46,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-03 21:14:46,310 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 28 [2019-09-03 21:14:46,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 21:14:46,314 INFO L225 Difference]: With dead ends: 84 [2019-09-03 21:14:46,314 INFO L226 Difference]: Without dead ends: 84 [2019-09-03 21:14:46,315 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 62.5s TimeCoverageRelationStatistics Valid=168, Invalid=644, Unknown=4, NotChecked=54, Total=870 [2019-09-03 21:14:46,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2019-09-03 21:14:46,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2019-09-03 21:14:46,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2019-09-03 21:14:46,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 102 transitions. [2019-09-03 21:14:46,325 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 102 transitions. Word has length 28 [2019-09-03 21:14:46,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 21:14:46,325 INFO L475 AbstractCegarLoop]: Abstraction has 84 states and 102 transitions. [2019-09-03 21:14:46,326 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-03 21:14:46,326 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 102 transitions. [2019-09-03 21:14:46,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-09-03 21:14:46,327 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 21:14:46,328 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 21:14:46,328 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 21:14:46,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 21:14:46,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1797628174, now seen corresponding path program 2 times [2019-09-03 21:14:46,328 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 21:14:46,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:14:46,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:14:46,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:14:46,329 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 21:14:46,333 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 21:14:46,333 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 21:14:46,333 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 [2019-09-03 21:14:46,355 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-03 21:14:46,356 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-03 21:14:46,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:14:46,370 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-03 21:14:46,370 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-03 21:14:46,371 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 21:14:46,371 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 [2019-09-03 21:14:46,380 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-03 21:14:46,380 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2019-09-03 21:14:46,442 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-09-03 21:14:46,443 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-03 21:14:46,443 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 23 conjunts are in the unsatisfiable core [2019-09-03 21:14:46,446 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 21:14:46,465 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:14:46,466 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:14:46,493 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:14:46,494 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:14:46,536 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:14:46,536 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:14:46,898 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 27 [2019-09-03 21:14:46,900 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:14:46,900 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:14:47,173 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:14:47,376 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 46 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-03 21:14:47,376 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-03 21:14:47,412 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:14:47,543 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:14:47,544 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:14:47,545 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:14:47,545 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:14:51,673 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:14:51,674 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:14:51,674 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:14:51,683 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:14:51,701 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:14:51,702 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:14:51,735 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:14:52,006 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:14:52,006 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:14:52,007 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:14:52,204 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 27 [2019-09-03 21:14:52,205 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:14:52,230 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 40 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-09-03 21:14:52,239 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-03 21:14:52,239 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2019-09-03 21:14:52,239 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-03 21:14:52,241 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-03 21:14:52,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-03 21:14:52,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=303, Unknown=4, NotChecked=0, Total=380 [2019-09-03 21:14:52,242 INFO L87 Difference]: Start difference. First operand 84 states and 102 transitions. Second operand 20 states. [2019-09-03 21:14:55,322 WARN L188 SmtUtils]: Spent 2.33 s on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2019-09-03 21:14:57,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 21:14:57,550 INFO L93 Difference]: Finished difference Result 102 states and 127 transitions. [2019-09-03 21:14:57,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-03 21:14:57,550 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 46 [2019-09-03 21:14:57,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 21:14:57,551 INFO L225 Difference]: With dead ends: 102 [2019-09-03 21:14:57,551 INFO L226 Difference]: Without dead ends: 0 [2019-09-03 21:14:57,551 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 67 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=147, Invalid=498, Unknown=5, NotChecked=0, Total=650 [2019-09-03 21:14:57,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-03 21:14:57,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-03 21:14:57,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-03 21:14:57,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-03 21:14:57,552 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2019-09-03 21:14:57,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 21:14:57,553 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-03 21:14:57,553 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-03 21:14:57,553 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-03 21:14:57,553 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-03 21:14:57,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 09:14:57 BoogieIcfgContainer [2019-09-03 21:14:57,558 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 21:14:57,560 INFO L168 Benchmark]: Toolchain (without parser) took 113304.16 ms. Allocated memory was 140.5 MB in the beginning and 291.0 MB in the end (delta: 150.5 MB). Free memory was 87.8 MB in the beginning and 224.8 MB in the end (delta: -136.9 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2019-09-03 21:14:57,561 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 106.6 MB in the beginning and 106.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-03 21:14:57,561 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.48 ms. Allocated memory is still 140.5 MB. Free memory was 87.6 MB in the beginning and 78.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-09-03 21:14:57,562 INFO L168 Benchmark]: Boogie Preprocessor took 164.84 ms. Allocated memory was 140.5 MB in the beginning and 201.3 MB in the end (delta: 60.8 MB). Free memory was 78.2 MB in the beginning and 178.9 MB in the end (delta: -100.6 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2019-09-03 21:14:57,563 INFO L168 Benchmark]: RCFGBuilder took 253.60 ms. Allocated memory is still 201.3 MB. Free memory was 178.3 MB in the beginning and 166.8 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2019-09-03 21:14:57,564 INFO L168 Benchmark]: TraceAbstraction took 112551.57 ms. Allocated memory was 201.3 MB in the beginning and 291.0 MB in the end (delta: 89.7 MB). Free memory was 166.8 MB in the beginning and 224.8 MB in the end (delta: -58.0 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2019-09-03 21:14:57,568 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 106.6 MB in the beginning and 106.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 322.48 ms. Allocated memory is still 140.5 MB. Free memory was 87.6 MB in the beginning and 78.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 164.84 ms. Allocated memory was 140.5 MB in the beginning and 201.3 MB in the end (delta: 60.8 MB). Free memory was 78.2 MB in the beginning and 178.9 MB in the end (delta: -100.6 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 253.60 ms. Allocated memory is still 201.3 MB. Free memory was 178.3 MB in the beginning and 166.8 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 112551.57 ms. Allocated memory was 201.3 MB in the beginning and 291.0 MB in the end (delta: 89.7 MB). Free memory was 166.8 MB in the beginning and 224.8 MB in the end (delta: -58.0 MB). Peak memory consumption was 31.7 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, 112.4s OverallTime, 7 OverallIterations, 5 TraceHistogramMax, 35.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 102 SDtfs, 138 SDslu, 462 SDs, 0 SdLazy, 626 SolverSat, 109 SolverUnsat, 20 SolverUnknown, 0 SolverNotchecked, 10.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 318 GetRequests, 209 SyntacticMatches, 11 SemanticMatches, 98 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 99.1s 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, 75.9s InterpolantComputationTime, 304 NumberOfCodeBlocks, 295 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 291 ConstructedInterpolants, 55 QuantifiedInterpolants, 93597 SizeOfPredicates, 29 NumberOfNonLiveVariables, 345 ConjunctsInSsa, 123 ConjunctsInUnsatCore, 13 InterpolantComputations, 4 PerfectInterpolantSequences, 170/212 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...