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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/mannadiv.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 20:19:19,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 20:19:19,801 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 20:19:19,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-03 20:19:19,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-03 20:19:19,820 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-03 20:19:19,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-03 20:19:19,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-03 20:19:19,836 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-03 20:19:19,837 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-03 20:19:19,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-03 20:19:19,842 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-03 20:19:19,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 20:19:19,844 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 20:19:19,846 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 20:19:19,848 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 20:19:19,849 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 20:19:19,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 20:19:19,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 20:19:19,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 20:19:19,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 20:19:19,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 20:19:19,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 20:19:19,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 20:19:19,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 20:19:19,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 20:19:19,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 20:19:19,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 20:19:19,883 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-03 20:19:19,911 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 20:19:19,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 20:19:19,913 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-03 20:19:19,914 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-03 20:19:19,914 INFO L138 SettingsManager]: * Use SBE=true [2019-09-03 20:19:19,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 20:19:19,914 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 20:19:19,914 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-03 20:19:19,915 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 20:19:19,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 20:19:19,916 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 20:19:19,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 20:19:19,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 20:19:19,917 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 20:19:19,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 20:19:19,917 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-03 20:19:19,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 20:19:19,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 20:19:19,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 20:19:19,918 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-03 20:19:19,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-03 20:19:19,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 20:19:19,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 20:19:19,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 20:19:19,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-03 20:19:19,919 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-03 20:19:19,919 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 20:19:19,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 20:19:19,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-03 20:19:19,946 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 20:19:19,961 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 20:19:19,965 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 20:19:19,967 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 20:19:19,967 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 20:19:19,968 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/mannadiv.c [2019-09-03 20:19:20,035 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e273b21f9/b9885bbd55b540c39ebf6cc3f5aa6b69/FLAGed3addab5 [2019-09-03 20:19:20,465 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 20:19:20,466 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/mannadiv.c [2019-09-03 20:19:20,472 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e273b21f9/b9885bbd55b540c39ebf6cc3f5aa6b69/FLAGed3addab5 [2019-09-03 20:19:20,893 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e273b21f9/b9885bbd55b540c39ebf6cc3f5aa6b69 [2019-09-03 20:19:20,903 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 20:19:20,905 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 20:19:20,906 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 20:19:20,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 20:19:20,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 20:19:20,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:19:20" (1/1) ... [2019-09-03 20:19:20,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b0885a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:19:20, skipping insertion in model container [2019-09-03 20:19:20,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:19:20" (1/1) ... [2019-09-03 20:19:20,920 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 20:19:20,937 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 20:19:21,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:19:21,121 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 20:19:21,148 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:19:21,162 INFO L192 MainTranslator]: Completed translation [2019-09-03 20:19:21,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:19:21 WrapperNode [2019-09-03 20:19:21,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 20:19:21,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 20:19:21,164 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 20:19:21,164 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 20:19:21,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:19:21" (1/1) ... [2019-09-03 20:19:21,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:19:21" (1/1) ... [2019-09-03 20:19:21,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:19:21" (1/1) ... [2019-09-03 20:19:21,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:19:21" (1/1) ... [2019-09-03 20:19:21,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:19:21" (1/1) ... [2019-09-03 20:19:21,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:19:21" (1/1) ... [2019-09-03 20:19:21,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:19:21" (1/1) ... [2019-09-03 20:19:21,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 20:19:21,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 20:19:21,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 20:19:21,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 20:19:21,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:19:21" (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 20:19:21,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 20:19:21,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 20:19:21,328 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 20:19:21,329 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 20:19:21,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 20:19:21,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-03 20:19:21,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-03 20:19:21,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 20:19:21,329 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 20:19:21,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 20:19:21,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 20:19:21,492 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 20:19:21,492 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-03 20:19:21,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:19:21 BoogieIcfgContainer [2019-09-03 20:19:21,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 20:19:21,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 20:19:21,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 20:19:21,497 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 20:19:21,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 08:19:20" (1/3) ... [2019-09-03 20:19:21,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@efe8d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:19:21, skipping insertion in model container [2019-09-03 20:19:21,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:19:21" (2/3) ... [2019-09-03 20:19:21,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@efe8d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:19:21, skipping insertion in model container [2019-09-03 20:19:21,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:19:21" (3/3) ... [2019-09-03 20:19:21,501 INFO L109 eAbstractionObserver]: Analyzing ICFG mannadiv.c [2019-09-03 20:19:21,510 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 20:19:21,518 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 20:19:21,547 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 20:19:21,615 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-03 20:19:21,616 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 20:19:21,616 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-03 20:19:21,617 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 20:19:21,617 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 20:19:21,617 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 20:19:21,617 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 20:19:21,617 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 20:19:21,617 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 20:19:21,640 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-09-03 20:19:21,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-03 20:19:21,647 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:19:21,648 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:19:21,651 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:19:21,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:19:21,655 INFO L82 PathProgramCache]: Analyzing trace with hash -858950785, now seen corresponding path program 1 times [2019-09-03 20:19:21,657 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:19:21,658 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:19:21,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:21,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:19:21,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:19:21,759 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 20:19:21,761 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:19:21,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-03 20:19:21,764 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-03 20:19:21,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-03 20:19:21,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 20:19:21,776 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-09-03 20:19:21,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:19:21,794 INFO L93 Difference]: Finished difference Result 37 states and 49 transitions. [2019-09-03 20:19:21,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-03 20:19:21,795 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-09-03 20:19:21,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:19:21,804 INFO L225 Difference]: With dead ends: 37 [2019-09-03 20:19:21,805 INFO L226 Difference]: Without dead ends: 16 [2019-09-03 20:19:21,808 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 20:19:21,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-09-03 20:19:21,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-09-03 20:19:21,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-09-03 20:19:21,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-09-03 20:19:21,847 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2019-09-03 20:19:21,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:19:21,847 INFO L475 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-09-03 20:19:21,848 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-03 20:19:21,848 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-09-03 20:19:21,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-03 20:19:21,848 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:19:21,849 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:19:21,849 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:19:21,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:19:21,850 INFO L82 PathProgramCache]: Analyzing trace with hash -871939661, now seen corresponding path program 1 times [2019-09-03 20:19:21,850 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:19:21,850 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:19:21,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:21,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:19:21,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:21,859 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 20:19:21,859 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 20:19:21,860 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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 20:19:21,875 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:19:21,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:19:21,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-03 20:19:21,910 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 20:19:21,993 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 20:19:21,997 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:19:21,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-03 20:19:21,999 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-03 20:19:22,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-03 20:19:22,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-03 20:19:22,000 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 5 states. [2019-09-03 20:19:22,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:19:22,091 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2019-09-03 20:19:22,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-03 20:19:22,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-09-03 20:19:22,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:19:22,094 INFO L225 Difference]: With dead ends: 27 [2019-09-03 20:19:22,094 INFO L226 Difference]: Without dead ends: 25 [2019-09-03 20:19:22,095 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-03 20:19:22,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-09-03 20:19:22,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2019-09-03 20:19:22,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-09-03 20:19:22,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2019-09-03 20:19:22,104 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 10 [2019-09-03 20:19:22,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:19:22,105 INFO L475 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2019-09-03 20:19:22,105 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-03 20:19:22,105 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2019-09-03 20:19:22,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-03 20:19:22,106 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:19:22,106 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:19:22,107 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:19:22,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:19:22,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1067575333, now seen corresponding path program 1 times [2019-09-03 20:19:22,107 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:19:22,108 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:19:22,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:22,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:19:22,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:22,115 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 20:19:22,116 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 20:19:22,116 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 20:19:22,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:19:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:19:22,147 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 15 conjunts are in the unsatisfiable core [2019-09-03 20:19:22,149 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 20:19:22,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:19:22,208 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:19:22,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-03 20:19:22,209 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-03 20:19:22,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-03 20:19:22,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-03 20:19:22,210 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 6 states. [2019-09-03 20:19:22,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:19:22,316 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2019-09-03 20:19:22,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-03 20:19:22,317 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-09-03 20:19:22,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:19:22,318 INFO L225 Difference]: With dead ends: 31 [2019-09-03 20:19:22,318 INFO L226 Difference]: Without dead ends: 24 [2019-09-03 20:19:22,320 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-03 20:19:22,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-09-03 20:19:22,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2019-09-03 20:19:22,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-09-03 20:19:22,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2019-09-03 20:19:22,329 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 16 [2019-09-03 20:19:22,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:19:22,329 INFO L475 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2019-09-03 20:19:22,329 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-03 20:19:22,330 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2019-09-03 20:19:22,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-03 20:19:22,331 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:19:22,331 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:19:22,333 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:19:22,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:19:22,333 INFO L82 PathProgramCache]: Analyzing trace with hash 427538464, now seen corresponding path program 1 times [2019-09-03 20:19:22,333 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:19:22,334 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:19:22,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:22,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:19:22,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:22,349 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 20:19:22,349 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 20:19:22,350 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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) [2019-09-03 20:19:22,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:19:22,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:19:22,383 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 21 conjunts are in the unsatisfiable core [2019-09-03 20:19:22,386 INFO L279 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 20:19:22,462 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 20:19:22,465 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-03 20:19:22,465 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-09-03 20:19:22,466 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-03 20:19:22,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-03 20:19:22,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-03 20:19:22,467 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 6 states. [2019-09-03 20:19:22,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:19:22,553 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2019-09-03 20:19:22,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-03 20:19:22,553 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-09-03 20:19:22,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:19:22,555 INFO L225 Difference]: With dead ends: 44 [2019-09-03 20:19:22,555 INFO L226 Difference]: Without dead ends: 33 [2019-09-03 20:19:22,556 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-03 20:19:22,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-09-03 20:19:22,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2019-09-03 20:19:22,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-09-03 20:19:22,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2019-09-03 20:19:22,563 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 18 [2019-09-03 20:19:22,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:19:22,564 INFO L475 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2019-09-03 20:19:22,564 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-03 20:19:22,564 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2019-09-03 20:19:22,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-03 20:19:22,565 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:19:22,565 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:19:22,566 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:19:22,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:19:22,566 INFO L82 PathProgramCache]: Analyzing trace with hash 484796766, now seen corresponding path program 1 times [2019-09-03 20:19:22,566 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:19:22,566 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:19:22,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:22,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:19:22,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:22,573 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 20:19:22,573 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 20:19:22,573 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 20:19:22,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:19:22,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:19:22,613 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-03 20:19:22,615 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 20:19:22,691 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 20:19:22,694 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-03 20:19:22,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-09-03 20:19:22,695 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-03 20:19:22,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-03 20:19:22,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-03 20:19:22,696 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 6 states. [2019-09-03 20:19:22,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:19:22,777 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2019-09-03 20:19:22,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-03 20:19:22,778 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-09-03 20:19:22,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:19:22,779 INFO L225 Difference]: With dead ends: 43 [2019-09-03 20:19:22,779 INFO L226 Difference]: Without dead ends: 41 [2019-09-03 20:19:22,780 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-03 20:19:22,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-09-03 20:19:22,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2019-09-03 20:19:22,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-09-03 20:19:22,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2019-09-03 20:19:22,795 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 18 [2019-09-03 20:19:22,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:19:22,796 INFO L475 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2019-09-03 20:19:22,796 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-03 20:19:22,796 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2019-09-03 20:19:22,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-09-03 20:19:22,797 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:19:22,797 INFO L399 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:19:22,797 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:19:22,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:19:22,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1265440978, now seen corresponding path program 1 times [2019-09-03 20:19:22,798 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:19:22,798 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:19:22,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:22,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:19:22,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:22,808 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 20:19:22,808 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 20:19:22,808 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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 20:19:22,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:19:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 20:19:22,846 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-03 20:19:22,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 20:19:22,898 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:19:22,919 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 20:19:22,922 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-03 20:19:22,922 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-09-03 20:19:22,923 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-03 20:19:22,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-03 20:19:22,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-09-03 20:19:22,923 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 9 states. [2019-09-03 20:19:22,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:19:22,997 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2019-09-03 20:19:22,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-03 20:19:22,998 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2019-09-03 20:19:22,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:19:22,999 INFO L225 Difference]: With dead ends: 38 [2019-09-03 20:19:22,999 INFO L226 Difference]: Without dead ends: 0 [2019-09-03 20:19:23,002 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-09-03 20:19:23,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-03 20:19:23,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-03 20:19:23,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-03 20:19:23,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-03 20:19:23,003 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2019-09-03 20:19:23,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:19:23,003 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-03 20:19:23,004 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-03 20:19:23,004 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-03 20:19:23,004 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-03 20:19:23,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-03 20:19:23,086 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-09-03 20:19:23,086 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-03 20:19:23,086 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-03 20:19:23,086 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-03 20:19:23,086 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-03 20:19:23,087 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-03 20:19:23,087 INFO L439 ceAbstractionStarter]: At program point L35-2(lines 30 43) the Hoare annotation is: (and (= (+ (+ main_~y2~0 (* main_~x2~0 main_~y1~0)) main_~y3~0) main_~x1~0) (not (= 0 main_~x2~0))) [2019-09-03 20:19:23,087 INFO L439 ceAbstractionStarter]: At program point L31(line 31) the Hoare annotation is: (and (= (+ (+ main_~y2~0 (* main_~x2~0 main_~y1~0)) main_~y3~0) main_~x1~0) (not (= 0 main_~x2~0))) [2019-09-03 20:19:23,087 INFO L443 ceAbstractionStarter]: For program point L31-1(lines 30 43) no Hoare annotation was computed. [2019-09-03 20:19:23,087 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 17 46) no Hoare annotation was computed. [2019-09-03 20:19:23,087 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 17 46) no Hoare annotation was computed. [2019-09-03 20:19:23,087 INFO L443 ceAbstractionStarter]: For program point L44(line 44) no Hoare annotation was computed. [2019-09-03 20:19:23,088 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 17 46) the Hoare annotation is: true [2019-09-03 20:19:23,088 INFO L439 ceAbstractionStarter]: At program point L30-2(lines 30 43) the Hoare annotation is: (let ((.cse0 (+ main_~y2~0 (* main_~x2~0 main_~y1~0)))) (and (= (+ .cse0 0) main_~x1~0) (= (+ .cse0 main_~y3~0) main_~x1~0) (not (= 0 main_~x2~0)))) [2019-09-03 20:19:23,089 INFO L443 ceAbstractionStarter]: For program point L35(lines 35 42) no Hoare annotation was computed. [2019-09-03 20:19:23,089 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2019-09-03 20:19:23,089 INFO L443 ceAbstractionStarter]: For program point L12(lines 12 13) no Hoare annotation was computed. [2019-09-03 20:19:23,089 INFO L443 ceAbstractionStarter]: For program point L11(lines 11 14) no Hoare annotation was computed. [2019-09-03 20:19:23,089 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2019-09-03 20:19:23,089 INFO L443 ceAbstractionStarter]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2019-09-03 20:19:23,090 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2019-09-03 20:19:23,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 08:19:23 BoogieIcfgContainer [2019-09-03 20:19:23,107 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 20:19:23,111 INFO L168 Benchmark]: Toolchain (without parser) took 2203.81 ms. Allocated memory was 140.0 MB in the beginning and 224.9 MB in the end (delta: 84.9 MB). Free memory was 87.7 MB in the beginning and 148.8 MB in the end (delta: -61.1 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2019-09-03 20:19:23,113 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 140.0 MB. Free memory was 106.0 MB in the beginning and 105.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-03 20:19:23,115 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.00 ms. Allocated memory is still 140.0 MB. Free memory was 87.5 MB in the beginning and 78.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-09-03 20:19:23,116 INFO L168 Benchmark]: Boogie Preprocessor took 113.86 ms. Allocated memory was 140.0 MB in the beginning and 199.8 MB in the end (delta: 59.8 MB). Free memory was 78.1 MB in the beginning and 176.9 MB in the end (delta: -98.8 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2019-09-03 20:19:23,117 INFO L168 Benchmark]: RCFGBuilder took 215.74 ms. Allocated memory is still 199.8 MB. Free memory was 176.9 MB in the beginning and 165.4 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2019-09-03 20:19:23,121 INFO L168 Benchmark]: TraceAbstraction took 1612.19 ms. Allocated memory was 199.8 MB in the beginning and 224.9 MB in the end (delta: 25.2 MB). Free memory was 165.4 MB in the beginning and 148.8 MB in the end (delta: 16.6 MB). Peak memory consumption was 41.8 MB. Max. memory is 7.1 GB. [2019-09-03 20:19:23,124 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 140.0 MB. Free memory was 106.0 MB in the beginning and 105.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 258.00 ms. Allocated memory is still 140.0 MB. Free memory was 87.5 MB in the beginning and 78.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.86 ms. Allocated memory was 140.0 MB in the beginning and 199.8 MB in the end (delta: 59.8 MB). Free memory was 78.1 MB in the beginning and 176.9 MB in the end (delta: -98.8 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 215.74 ms. Allocated memory is still 199.8 MB. Free memory was 176.9 MB in the beginning and 165.4 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1612.19 ms. Allocated memory was 199.8 MB in the beginning and 224.9 MB in the end (delta: 25.2 MB). Free memory was 165.4 MB in the beginning and 148.8 MB in the end (delta: 16.6 MB). Peak memory consumption was 41.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: 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 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: y2 + x2 * y1 + y3 == x1 && !(0 == x2) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. SAFE Result, 1.4s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 86 SDtfs, 39 SDslu, 217 SDs, 0 SdLazy, 202 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 8 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 17 PreInvPairs, 27 NumberOfFragments, 56 HoareAnnotationTreeSize, 17 FomulaSimplifications, 154 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 18 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 6782 SizeOfPredicates, 13 NumberOfNonLiveVariables, 256 ConjunctsInSsa, 80 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 16/21 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...