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/loop-industry-pattern/mod3.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 12:58:38,851 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 12:58:38,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 12:58:38,873 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 12:58:38,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 12:58:38,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 12:58:38,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 12:58:38,879 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 12:58:38,880 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 12:58:38,886 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 12:58:38,887 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 12:58:38,891 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 12:58:38,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 12:58:38,893 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 12:58:38,895 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 12:58:38,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 12:58:38,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 12:58:38,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 12:58:38,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 12:58:38,904 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 12:58:38,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 12:58:38,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 12:58:38,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 12:58:38,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 12:58:38,918 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-20 12:58:38,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 12:58:38,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 12:58:38,935 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 12:58:38,936 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 [2019-09-20 12:58:38,957 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 12:58:38,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 12:58:38,959 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 12:58:38,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 12:58:38,960 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 12:58:38,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 12:58:38,960 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 12:58:38,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 12:58:38,961 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 12:58:38,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 12:58:38,962 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 12:58:38,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 12:58:38,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 12:58:38,963 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 12:58:38,963 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 12:58:38,963 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 12:58:38,964 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 12:58:38,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 12:58:38,964 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 12:58:38,964 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 12:58:38,964 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 12:58:38,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 12:58:38,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 12:58:38,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 12:58:38,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 12:58:38,965 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 12:58:38,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 12:58:38,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 12:58:38,966 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 12:58:39,018 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 12:58:39,038 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 12:58:39,042 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 12:58:39,043 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 12:58:39,044 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 12:58:39,044 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c [2019-09-20 12:58:39,119 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b5119c03/4e4c1505610e4d0ab06e2e8e4a97fbe4/FLAG7f0d0b69c [2019-09-20 12:58:39,581 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 12:58:39,581 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c [2019-09-20 12:58:39,588 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b5119c03/4e4c1505610e4d0ab06e2e8e4a97fbe4/FLAG7f0d0b69c [2019-09-20 12:58:39,953 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b5119c03/4e4c1505610e4d0ab06e2e8e4a97fbe4 [2019-09-20 12:58:39,964 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 12:58:39,966 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 12:58:39,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 12:58:39,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 12:58:39,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 12:58:39,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:58:39" (1/1) ... [2019-09-20 12:58:39,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f362d21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:39, skipping insertion in model container [2019-09-20 12:58:39,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:58:39" (1/1) ... [2019-09-20 12:58:39,980 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 12:58:39,998 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 12:58:40,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 12:58:40,198 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 12:58:40,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 12:58:40,228 INFO L192 MainTranslator]: Completed translation [2019-09-20 12:58:40,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:40 WrapperNode [2019-09-20 12:58:40,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 12:58:40,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 12:58:40,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 12:58:40,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 12:58:40,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:40" (1/1) ... [2019-09-20 12:58:40,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:40" (1/1) ... [2019-09-20 12:58:40,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:40" (1/1) ... [2019-09-20 12:58:40,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:40" (1/1) ... [2019-09-20 12:58:40,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:40" (1/1) ... [2019-09-20 12:58:40,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:40" (1/1) ... [2019-09-20 12:58:40,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:40" (1/1) ... [2019-09-20 12:58:40,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 12:58:40,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 12:58:40,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 12:58:40,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 12:58:40,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:40" (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 [2019-09-20 12:58:40,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 12:58:40,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 12:58:40,404 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 12:58:40,404 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 12:58:40,404 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 12:58:40,404 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 12:58:40,404 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 12:58:40,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 12:58:40,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 12:58:40,609 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 12:58:40,609 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-20 12:58:40,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:58:40 BoogieIcfgContainer [2019-09-20 12:58:40,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 12:58:40,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 12:58:40,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 12:58:40,617 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 12:58:40,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 12:58:39" (1/3) ... [2019-09-20 12:58:40,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27cb4b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:58:40, skipping insertion in model container [2019-09-20 12:58:40,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:40" (2/3) ... [2019-09-20 12:58:40,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27cb4b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:58:40, skipping insertion in model container [2019-09-20 12:58:40,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:58:40" (3/3) ... [2019-09-20 12:58:40,621 INFO L109 eAbstractionObserver]: Analyzing ICFG mod3.c.v+cfa-reducer.c [2019-09-20 12:58:40,632 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 12:58:40,641 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 12:58:40,658 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 12:58:40,689 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 12:58:40,690 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 12:58:40,690 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 12:58:40,690 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 12:58:40,691 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 12:58:40,691 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 12:58:40,691 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 12:58:40,691 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 12:58:40,691 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 12:58:40,714 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-09-20 12:58:40,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-20 12:58:40,721 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:58:40,722 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:58:40,725 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:58:40,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:58:40,730 INFO L82 PathProgramCache]: Analyzing trace with hash 964689295, now seen corresponding path program 1 times [2019-09-20 12:58:40,731 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:58:40,731 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:58:40,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:40,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:58:40,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:40,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:58:40,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:58:40,951 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 12:58:40,951 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 12:58:40,956 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 12:58:40,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 12:58:40,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 12:58:40,974 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2019-09-20 12:58:41,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:58:41,052 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2019-09-20 12:58:41,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 12:58:41,054 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-09-20 12:58:41,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:58:41,068 INFO L225 Difference]: With dead ends: 34 [2019-09-20 12:58:41,069 INFO L226 Difference]: Without dead ends: 20 [2019-09-20 12:58:41,073 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 12:58:41,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-09-20 12:58:41,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2019-09-20 12:58:41,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-09-20 12:58:41,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2019-09-20 12:58:41,127 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 11 [2019-09-20 12:58:41,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:58:41,129 INFO L475 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2019-09-20 12:58:41,129 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 12:58:41,129 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2019-09-20 12:58:41,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-20 12:58:41,130 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:58:41,130 INFO L407 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:58:41,131 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:58:41,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:58:41,135 INFO L82 PathProgramCache]: Analyzing trace with hash 2096975293, now seen corresponding path program 1 times [2019-09-20 12:58:41,135 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:58:41,135 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:58:41,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:41,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:58:41,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:41,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:58:41,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:58:41,432 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 12:58:41,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 12:58:41,435 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 12:58:41,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 12:58:41,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 12:58:41,437 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand 4 states. [2019-09-20 12:58:41,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:58:41,583 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2019-09-20 12:58:41,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 12:58:41,584 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-09-20 12:58:41,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:58:41,584 INFO L225 Difference]: With dead ends: 29 [2019-09-20 12:58:41,585 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 12:58:41,586 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-20 12:58:41,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 12:58:41,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 12:58:41,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 12:58:41,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 12:58:41,587 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-09-20 12:58:41,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:58:41,588 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 12:58:41,588 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 12:58:41,588 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 12:58:41,588 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 12:58:41,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-20 12:58:41,621 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-09-20 12:58:41,622 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-09-20 12:58:41,622 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-20 12:58:41,622 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-20 12:58:41,622 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-20 12:58:41,622 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-20 12:58:41,622 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-20 12:58:41,623 INFO L443 ceAbstractionStarter]: For program point L25(lines 25 47) no Hoare annotation was computed. [2019-09-20 12:58:41,623 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 7 76) no Hoare annotation was computed. [2019-09-20 12:58:41,623 INFO L443 ceAbstractionStarter]: For program point L52(lines 52 74) no Hoare annotation was computed. [2019-09-20 12:58:41,623 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 7 76) no Hoare annotation was computed. [2019-09-20 12:58:41,623 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 7 76) the Hoare annotation is: true [2019-09-20 12:58:41,624 INFO L443 ceAbstractionStarter]: For program point L61(line 61) no Hoare annotation was computed. [2019-09-20 12:58:41,624 INFO L443 ceAbstractionStarter]: For program point L59(lines 59 68) no Hoare annotation was computed. [2019-09-20 12:58:41,624 INFO L443 ceAbstractionStarter]: For program point L16(lines 16 48) no Hoare annotation was computed. [2019-09-20 12:58:41,624 INFO L443 ceAbstractionStarter]: For program point L14(lines 14 75) no Hoare annotation was computed. [2019-09-20 12:58:41,624 INFO L439 ceAbstractionStarter]: At program point L45(lines 8 76) the Hoare annotation is: (or (and (<= (div main_~main__y~0 4294967296) 0) (<= 1 main_~main__y~0)) (<= (* 2863311531 main_~main__x~0) (let ((.cse0 (div main_~main__x~0 4294967296))) (+ (* 12297829383904690176 .cse0) (* 8589934592 (div (+ (* (- 4294967296) .cse0) main_~main__x~0) 3)) 1431655765)))) [2019-09-20 12:58:41,625 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 61) no Hoare annotation was computed. [2019-09-20 12:58:41,625 INFO L443 ceAbstractionStarter]: For program point L35(lines 35 46) no Hoare annotation was computed. [2019-09-20 12:58:41,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 12:58:41 BoogieIcfgContainer [2019-09-20 12:58:41,640 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 12:58:41,643 INFO L168 Benchmark]: Toolchain (without parser) took 1675.96 ms. Allocated memory was 131.1 MB in the beginning and 198.2 MB in the end (delta: 67.1 MB). Free memory was 86.7 MB in the beginning and 111.2 MB in the end (delta: -24.4 MB). Peak memory consumption was 42.7 MB. Max. memory is 7.1 GB. [2019-09-20 12:58:41,644 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 131.1 MB. Free memory was 105.0 MB in the beginning and 104.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 12:58:41,645 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.43 ms. Allocated memory is still 131.1 MB. Free memory was 86.5 MB in the beginning and 76.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-09-20 12:58:41,646 INFO L168 Benchmark]: Boogie Preprocessor took 118.01 ms. Allocated memory was 131.1 MB in the beginning and 198.2 MB in the end (delta: 67.1 MB). Free memory was 76.9 MB in the beginning and 174.5 MB in the end (delta: -97.6 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2019-09-20 12:58:41,647 INFO L168 Benchmark]: RCFGBuilder took 265.10 ms. Allocated memory is still 198.2 MB. Free memory was 174.5 MB in the beginning and 161.2 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2019-09-20 12:58:41,648 INFO L168 Benchmark]: TraceAbstraction took 1026.11 ms. Allocated memory is still 198.2 MB. Free memory was 161.2 MB in the beginning and 111.2 MB in the end (delta: 50.1 MB). Peak memory consumption was 50.1 MB. Max. memory is 7.1 GB. [2019-09-20 12:58:41,652 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 131.1 MB. Free memory was 105.0 MB in the beginning and 104.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 262.43 ms. Allocated memory is still 131.1 MB. Free memory was 86.5 MB in the beginning and 76.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.01 ms. Allocated memory was 131.1 MB in the beginning and 198.2 MB in the end (delta: 67.1 MB). Free memory was 76.9 MB in the beginning and 174.5 MB in the end (delta: -97.6 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 265.10 ms. Allocated memory is still 198.2 MB. Free memory was 174.5 MB in the beginning and 161.2 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1026.11 ms. Allocated memory is still 198.2 MB. Free memory was 161.2 MB in the beginning and 111.2 MB in the end (delta: 50.1 MB). Peak memory consumption was 50.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 61]: 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: 8]: Loop Invariant Derived loop invariant: (main__y / 4294967296 <= 0 && 1 <= main__y) || 2863311531 * main__x <= 12297829383904690176 * (main__x / 4294967296) + 8589934592 * ((-4294967296 * (main__x / 4294967296) + main__x) / 3) + 1431655765 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 1 error locations. SAFE Result, 0.9s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 39 SDtfs, 9 SDslu, 40 SDs, 0 SdLazy, 21 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, 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, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 7 NumberOfFragments, 36 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 1367 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...