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/loops/terminator_02-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 16:11:34,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 16:11:34,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 16:11:34,087 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 16:11:34,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 16:11:34,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 16:11:34,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 16:11:34,093 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 16:11:34,095 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 16:11:34,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 16:11:34,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 16:11:34,098 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 16:11:34,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 16:11:34,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 16:11:34,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 16:11:34,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 16:11:34,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 16:11:34,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 16:11:34,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 16:11:34,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 16:11:34,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 16:11:34,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 16:11:34,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 16:11:34,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 16:11:34,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-16 16:11:34,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 16:11:34,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 16:11:34,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 16:11:34,145 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 [2019-09-16 16:11:34,172 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 16:11:34,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 16:11:34,174 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-16 16:11:34,174 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-16 16:11:34,174 INFO L138 SettingsManager]: * Use SBE=true [2019-09-16 16:11:34,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 16:11:34,175 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 16:11:34,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-16 16:11:34,175 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 16:11:34,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 16:11:34,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 16:11:34,176 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 16:11:34,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 16:11:34,176 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 16:11:34,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 16:11:34,176 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-16 16:11:34,177 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 16:11:34,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 16:11:34,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 16:11:34,177 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-16 16:11:34,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-16 16:11:34,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 16:11:34,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 16:11:34,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 16:11:34,178 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-16 16:11:34,178 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-16 16:11:34,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 16:11:34,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-16 16:11:34,179 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 16:11:34,208 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 16:11:34,226 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 16:11:34,232 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 16:11:34,239 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 16:11:34,240 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 16:11:34,241 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_02-2.c [2019-09-16 16:11:34,313 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3be43cbe/78c982a6aa1b4f5591769604000cb580/FLAGcf8f2b7cc [2019-09-16 16:11:34,762 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 16:11:34,764 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_02-2.c [2019-09-16 16:11:34,771 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3be43cbe/78c982a6aa1b4f5591769604000cb580/FLAGcf8f2b7cc [2019-09-16 16:11:35,155 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3be43cbe/78c982a6aa1b4f5591769604000cb580 [2019-09-16 16:11:35,165 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 16:11:35,166 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 16:11:35,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 16:11:35,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 16:11:35,170 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 16:11:35,171 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 04:11:35" (1/1) ... [2019-09-16 16:11:35,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dc1d1fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:35, skipping insertion in model container [2019-09-16 16:11:35,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 04:11:35" (1/1) ... [2019-09-16 16:11:35,180 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 16:11:35,194 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 16:11:35,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 16:11:35,357 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 16:11:35,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 16:11:35,388 INFO L192 MainTranslator]: Completed translation [2019-09-16 16:11:35,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:35 WrapperNode [2019-09-16 16:11:35,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 16:11:35,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 16:11:35,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 16:11:35,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 16:11:35,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:35" (1/1) ... [2019-09-16 16:11:35,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:35" (1/1) ... [2019-09-16 16:11:35,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:35" (1/1) ... [2019-09-16 16:11:35,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:35" (1/1) ... [2019-09-16 16:11:35,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:35" (1/1) ... [2019-09-16 16:11:35,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:35" (1/1) ... [2019-09-16 16:11:35,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:35" (1/1) ... [2019-09-16 16:11:35,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 16:11:35,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 16:11:35,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 16:11:35,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 16:11:35,509 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 16:11:35,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 16:11:35,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 16:11:35,565 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-16 16:11:35,565 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 16:11:35,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 16:11:35,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-16 16:11:35,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-16 16:11:35,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 16:11:35,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-16 16:11:35,566 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 16:11:35,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 16:11:35,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 16:11:35,765 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 16:11:35,766 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-16 16:11:35,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 04:11:35 BoogieIcfgContainer [2019-09-16 16:11:35,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 16:11:35,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 16:11:35,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 16:11:35,772 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 16:11:35,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 04:11:35" (1/3) ... [2019-09-16 16:11:35,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab59a45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 04:11:35, skipping insertion in model container [2019-09-16 16:11:35,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:11:35" (2/3) ... [2019-09-16 16:11:35,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab59a45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 04:11:35, skipping insertion in model container [2019-09-16 16:11:35,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 04:11:35" (3/3) ... [2019-09-16 16:11:35,794 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_02-2.c [2019-09-16 16:11:35,829 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 16:11:35,847 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 16:11:35,893 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 16:11:35,929 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-16 16:11:35,930 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 16:11:35,930 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-16 16:11:35,930 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 16:11:35,930 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 16:11:35,930 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 16:11:35,930 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 16:11:35,930 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 16:11:35,931 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 16:11:35,948 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-09-16 16:11:35,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-16 16:11:35,953 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:11:35,955 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:11:35,957 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:11:35,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:11:35,962 INFO L82 PathProgramCache]: Analyzing trace with hash 2111920953, now seen corresponding path program 1 times [2019-09-16 16:11:35,964 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:11:35,964 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:11:36,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:36,018 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:11:36,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:36,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:11:36,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:11:36,084 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:11:36,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 16:11:36,088 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 16:11:36,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 16:11:36,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 16:11:36,104 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2019-09-16 16:11:36,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:11:36,130 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2019-09-16 16:11:36,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 16:11:36,132 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-09-16 16:11:36,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:11:36,141 INFO L225 Difference]: With dead ends: 35 [2019-09-16 16:11:36,141 INFO L226 Difference]: Without dead ends: 16 [2019-09-16 16:11:36,144 INFO L636 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 [2019-09-16 16:11:36,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-09-16 16:11:36,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-09-16 16:11:36,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-09-16 16:11:36,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2019-09-16 16:11:36,190 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14 [2019-09-16 16:11:36,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:11:36,191 INFO L475 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2019-09-16 16:11:36,191 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 16:11:36,192 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2019-09-16 16:11:36,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-16 16:11:36,192 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:11:36,193 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:11:36,193 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:11:36,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:11:36,194 INFO L82 PathProgramCache]: Analyzing trace with hash 2102685743, now seen corresponding path program 1 times [2019-09-16 16:11:36,194 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:11:36,194 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:11:36,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:36,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:11:36,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:11:36,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:11:36,317 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:11:36,317 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 16:11:36,319 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 16:11:36,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 16:11:36,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 16:11:36,320 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 6 states. [2019-09-16 16:11:36,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:11:36,445 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2019-09-16 16:11:36,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 16:11:36,446 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2019-09-16 16:11:36,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:11:36,447 INFO L225 Difference]: With dead ends: 22 [2019-09-16 16:11:36,447 INFO L226 Difference]: Without dead ends: 17 [2019-09-16 16:11:36,449 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-16 16:11:36,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-09-16 16:11:36,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-09-16 16:11:36,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-09-16 16:11:36,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-09-16 16:11:36,458 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2019-09-16 16:11:36,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:11:36,459 INFO L475 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-09-16 16:11:36,459 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 16:11:36,459 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-09-16 16:11:36,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-16 16:11:36,461 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:11:36,462 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:11:36,462 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:11:36,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:11:36,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1145559190, now seen corresponding path program 1 times [2019-09-16 16:11:36,463 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:11:36,463 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:11:36,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:36,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:11:36,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:11:36,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:11:36,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-16 16:11:36,539 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:11:36,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-16 16:11:36,540 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-16 16:11:36,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-16 16:11:36,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-16 16:11:36,541 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 5 states. [2019-09-16 16:11:36,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:11:36,573 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2019-09-16 16:11:36,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-16 16:11:36,573 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-09-16 16:11:36,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:11:36,574 INFO L225 Difference]: With dead ends: 17 [2019-09-16 16:11:36,574 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 16:11:36,575 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-16 16:11:36,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 16:11:36,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 16:11:36,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 16:11:36,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 16:11:36,576 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-09-16 16:11:36,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:11:36,577 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 16:11:36,577 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-16 16:11:36,577 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 16:11:36,577 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 16:11:36,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-16 16:11:36,610 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-09-16 16:11:36,610 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-16 16:11:36,611 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-16 16:11:36,611 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-16 16:11:36,611 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-16 16:11:36,611 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-16 16:11:36,611 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 13 35) no Hoare annotation was computed. [2019-09-16 16:11:36,612 INFO L443 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2019-09-16 16:11:36,612 INFO L439 ceAbstractionStarter]: At program point L21-2(lines 21 30) the Hoare annotation is: (or (< 99 main_~x~0) (<= main_~z~0 100)) [2019-09-16 16:11:36,612 INFO L443 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2019-09-16 16:11:36,612 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 13 35) no Hoare annotation was computed. [2019-09-16 16:11:36,613 INFO L443 ceAbstractionStarter]: For program point L32(line 32) no Hoare annotation was computed. [2019-09-16 16:11:36,613 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 13 35) the Hoare annotation is: true [2019-09-16 16:11:36,613 INFO L443 ceAbstractionStarter]: For program point L24(lines 24 29) no Hoare annotation was computed. [2019-09-16 16:11:36,613 INFO L446 ceAbstractionStarter]: At program point L24-2(lines 21 30) the Hoare annotation is: true [2019-09-16 16:11:36,613 INFO L443 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2019-09-16 16:11:36,614 INFO L443 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2019-09-16 16:11:36,614 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2019-09-16 16:11:36,614 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-09-16 16:11:36,614 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2019-09-16 16:11:36,615 INFO L443 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2019-09-16 16:11:36,615 INFO L443 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2019-09-16 16:11:36,615 INFO L443 ceAbstractionStarter]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2019-09-16 16:11:36,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 04:11:36 BoogieIcfgContainer [2019-09-16 16:11:36,623 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 16:11:36,627 INFO L168 Benchmark]: Toolchain (without parser) took 1459.37 ms. Allocated memory was 138.9 MB in the beginning and 199.2 MB in the end (delta: 60.3 MB). Free memory was 86.2 MB in the beginning and 119.0 MB in the end (delta: -32.7 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2019-09-16 16:11:36,628 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 104.9 MB in the beginning and 104.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 16:11:36,629 INFO L168 Benchmark]: CACSL2BoogieTranslator took 222.81 ms. Allocated memory is still 138.9 MB. Free memory was 86.0 MB in the beginning and 76.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-09-16 16:11:36,630 INFO L168 Benchmark]: Boogie Preprocessor took 114.68 ms. Allocated memory was 138.9 MB in the beginning and 199.2 MB in the end (delta: 60.3 MB). Free memory was 76.6 MB in the beginning and 176.9 MB in the end (delta: -100.3 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2019-09-16 16:11:36,631 INFO L168 Benchmark]: RCFGBuilder took 262.73 ms. Allocated memory is still 199.2 MB. Free memory was 176.9 MB in the beginning and 163.6 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2019-09-16 16:11:36,632 INFO L168 Benchmark]: TraceAbstraction took 855.11 ms. Allocated memory is still 199.2 MB. Free memory was 163.6 MB in the beginning and 119.0 MB in the end (delta: 44.6 MB). Peak memory consumption was 44.6 MB. Max. memory is 7.1 GB. [2019-09-16 16:11:36,636 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 104.9 MB in the beginning and 104.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 222.81 ms. Allocated memory is still 138.9 MB. Free memory was 86.0 MB in the beginning and 76.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.68 ms. Allocated memory was 138.9 MB in the beginning and 199.2 MB in the end (delta: 60.3 MB). Free memory was 76.6 MB in the beginning and 176.9 MB in the end (delta: -100.3 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 262.73 ms. Allocated memory is still 199.2 MB. Free memory was 176.9 MB in the beginning and 163.6 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 855.11 ms. Allocated memory is still 199.2 MB. Free memory was 163.6 MB in the beginning and 119.0 MB in the end (delta: 44.6 MB). Peak memory consumption was 44.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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: 21]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 54 SDtfs, 5 SDslu, 71 SDs, 0 SdLazy, 40 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 12 NumberOfFragments, 13 HoareAnnotationTreeSize, 9 FomulaSimplifications, 7 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 899 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...