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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/loop-invariants/eq1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:04:55,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:04:55,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:04:55,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:04:55,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:04:55,569 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:04:55,570 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:04:55,574 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:04:55,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:04:55,577 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:04:55,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:04:55,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:04:55,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:04:55,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:04:55,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:04:55,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:04:55,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:04:55,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:04:55,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:04:55,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:04:55,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:04:55,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:04:55,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:04:55,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:04:55,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:04:55,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:04:55,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:04:55,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:04:55,627 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 [2019-10-15 01:04:55,648 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:04:55,648 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:04:55,652 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:04:55,653 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:04:55,653 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:04:55,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:04:55,653 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:04:55,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:04:55,654 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:04:55,654 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:04:55,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:04:55,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:04:55,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:04:55,657 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:04:55,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:04:55,657 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:04:55,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:04:55,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:04:55,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:04:55,658 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:04:55,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:04:55,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:04:55,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:04:55,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:04:55,660 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:04:55,660 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:04:55,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:04:55,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:04:55,661 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:04:55,917 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:04:55,933 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:04:55,936 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:04:55,937 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:04:55,938 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:04:55,938 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/eq1.c [2019-10-15 01:04:56,006 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7660708db/e30bcc5e768f425fa4b8c0034ddb97cb/FLAG91794b33c [2019-10-15 01:04:56,408 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:04:56,409 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/eq1.c [2019-10-15 01:04:56,415 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7660708db/e30bcc5e768f425fa4b8c0034ddb97cb/FLAG91794b33c [2019-10-15 01:04:56,784 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7660708db/e30bcc5e768f425fa4b8c0034ddb97cb [2019-10-15 01:04:56,794 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:04:56,796 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:04:56,797 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:04:56,797 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:04:56,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:04:56,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:04:56" (1/1) ... [2019-10-15 01:04:56,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36edca5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:56, skipping insertion in model container [2019-10-15 01:04:56,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:04:56" (1/1) ... [2019-10-15 01:04:56,813 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:04:56,832 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:04:57,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:04:57,055 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:04:57,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:04:57,083 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:04:57,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:57 WrapperNode [2019-10-15 01:04:57,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:04:57,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:04:57,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:04:57,084 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:04:57,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:57" (1/1) ... [2019-10-15 01:04:57,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:57" (1/1) ... [2019-10-15 01:04:57,179 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:57" (1/1) ... [2019-10-15 01:04:57,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:57" (1/1) ... [2019-10-15 01:04:57,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:57" (1/1) ... [2019-10-15 01:04:57,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:57" (1/1) ... [2019-10-15 01:04:57,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:57" (1/1) ... [2019-10-15 01:04:57,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:04:57,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:04:57,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:04:57,191 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:04:57,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:57" (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 [2019-10-15 01:04:57,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:04:57,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:04:57,243 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 01:04:57,243 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:04:57,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:04:57,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-15 01:04:57,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 01:04:57,243 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:04:57,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:04:57,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:04:57,432 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:04:57,432 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:04:57,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:04:57 BoogieIcfgContainer [2019-10-15 01:04:57,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:04:57,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:04:57,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:04:57,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:04:57,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:04:56" (1/3) ... [2019-10-15 01:04:57,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7257690a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:04:57, skipping insertion in model container [2019-10-15 01:04:57,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:57" (2/3) ... [2019-10-15 01:04:57,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7257690a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:04:57, skipping insertion in model container [2019-10-15 01:04:57,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:04:57" (3/3) ... [2019-10-15 01:04:57,448 INFO L109 eAbstractionObserver]: Analyzing ICFG eq1.c [2019-10-15 01:04:57,462 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:04:57,482 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:04:57,493 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:04:57,515 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:04:57,515 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:04:57,515 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:04:57,515 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:04:57,516 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:04:57,516 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:04:57,516 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:04:57,516 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:04:57,533 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-10-15 01:04:57,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 01:04:57,539 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:04:57,540 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:04:57,542 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:04:57,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:04:57,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1712329921, now seen corresponding path program 1 times [2019-10-15 01:04:57,556 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:04:57,556 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079113535] [2019-10-15 01:04:57,557 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:04:57,557 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:04:57,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:04:57,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:04:57,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:04:57,644 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079113535] [2019-10-15 01:04:57,644 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:04:57,645 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:04:57,645 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159216342] [2019-10-15 01:04:57,649 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:04:57,651 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:04:57,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:04:57,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:04:57,664 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-10-15 01:04:57,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:04:57,685 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2019-10-15 01:04:57,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:04:57,686 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-15 01:04:57,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:04:57,694 INFO L225 Difference]: With dead ends: 31 [2019-10-15 01:04:57,695 INFO L226 Difference]: Without dead ends: 12 [2019-10-15 01:04:57,698 INFO L600 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 [2019-10-15 01:04:57,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-10-15 01:04:57,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-10-15 01:04:57,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-15 01:04:57,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2019-10-15 01:04:57,739 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2019-10-15 01:04:57,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:04:57,740 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-10-15 01:04:57,741 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:04:57,742 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2019-10-15 01:04:57,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 01:04:57,743 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:04:57,743 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:04:57,745 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:04:57,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:04:57,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1703094711, now seen corresponding path program 1 times [2019-10-15 01:04:57,749 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:04:57,749 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374370768] [2019-10-15 01:04:57,750 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:04:57,750 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:04:57,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:04:57,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:04:58,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:04:58,101 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374370768] [2019-10-15 01:04:58,101 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:04:58,102 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:04:58,102 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604566361] [2019-10-15 01:04:58,104 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:04:58,104 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:04:58,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:04:58,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:04:58,105 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 5 states. [2019-10-15 01:04:58,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:04:58,152 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2019-10-15 01:04:58,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:04:58,153 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-10-15 01:04:58,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:04:58,154 INFO L225 Difference]: With dead ends: 12 [2019-10-15 01:04:58,154 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 01:04:58,155 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:04:58,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 01:04:58,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 01:04:58,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 01:04:58,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 01:04:58,157 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2019-10-15 01:04:58,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:04:58,157 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 01:04:58,157 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:04:58,157 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 01:04:58,158 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 01:04:58,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 01:04:58,201 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-15 01:04:58,201 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:04:58,201 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:04:58,202 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-15 01:04:58,202 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:04:58,202 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:04:58,202 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 9 23) the Hoare annotation is: true [2019-10-15 01:04:58,203 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 9 23) no Hoare annotation was computed. [2019-10-15 01:04:58,203 INFO L443 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-10-15 01:04:58,203 INFO L443 ceAbstractionStarter]: For program point L15(lines 15 19) no Hoare annotation was computed. [2019-10-15 01:04:58,203 INFO L439 ceAbstractionStarter]: At program point L15-2(lines 14 20) the Hoare annotation is: (and (= main_~w~0 main_~x~0) (= main_~z~0 main_~y~0)) [2019-10-15 01:04:58,204 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 9 23) no Hoare annotation was computed. [2019-10-15 01:04:58,204 INFO L439 ceAbstractionStarter]: At program point L14-2(lines 14 20) the Hoare annotation is: (and (= main_~w~0 main_~x~0) (= main_~z~0 main_~y~0)) [2019-10-15 01:04:58,204 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-15 01:04:58,205 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-15 01:04:58,205 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-15 01:04:58,205 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-15 01:04:58,205 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-15 01:04:58,205 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-15 01:04:58,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:04:58 BoogieIcfgContainer [2019-10-15 01:04:58,220 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 01:04:58,223 INFO L168 Benchmark]: Toolchain (without parser) took 1426.38 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 104.0 MB in the beginning and 136.2 MB in the end (delta: -32.3 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2019-10-15 01:04:58,225 INFO L168 Benchmark]: CDTParser took 1.12 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-15 01:04:58,225 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.99 ms. Allocated memory is still 138.9 MB. Free memory was 103.7 MB in the beginning and 94.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-10-15 01:04:58,227 INFO L168 Benchmark]: Boogie Preprocessor took 106.67 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 94.4 MB in the beginning and 181.3 MB in the end (delta: -86.9 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2019-10-15 01:04:58,228 INFO L168 Benchmark]: RCFGBuilder took 242.39 ms. Allocated memory is still 202.9 MB. Free memory was 181.3 MB in the beginning and 170.0 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2019-10-15 01:04:58,229 INFO L168 Benchmark]: TraceAbstraction took 786.07 ms. Allocated memory is still 202.9 MB. Free memory was 169.3 MB in the beginning and 136.2 MB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. [2019-10-15 01:04:58,233 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.12 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 286.99 ms. Allocated memory is still 138.9 MB. Free memory was 103.7 MB in the beginning and 94.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.67 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 94.4 MB in the beginning and 181.3 MB in the end (delta: -86.9 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 242.39 ms. Allocated memory is still 202.9 MB. Free memory was 181.3 MB in the beginning and 170.0 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 786.07 ms. Allocated memory is still 202.9 MB. Free memory was 169.3 MB in the beginning and 136.2 MB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 14]: Loop Invariant Derived loop invariant: w == x && z == y - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Result: SAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 2 SDslu, 20 SDs, 0 SdLazy, 8 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s 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 DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 19 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...