/usr/bin/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/bitvector/jain_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:17:57,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:17:57,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:17:57,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:17:57,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:17:57,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:17:57,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:17:57,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:17:57,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:17:57,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:17:57,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:17:57,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:17:57,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:17:57,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:17:57,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:17:57,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:17:57,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:17:57,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:17:57,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:17:57,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:17:57,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:17:57,594 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:17:57,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:17:57,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:17:57,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:17:57,618 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:17:57,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:17:57,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:17:57,622 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 [2020-08-22 16:17:57,661 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:17:57,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:17:57,662 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:17:57,663 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:17:57,663 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:17:57,663 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:17:57,663 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:17:57,663 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:17:57,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:17:57,664 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:17:57,664 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:17:57,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:17:57,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:17:57,664 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:17:57,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:17:57,665 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:17:57,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:17:57,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:17:57,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:17:57,666 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:17:57,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:17:57,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:17:57,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:17:57,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:17:57,667 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:17:57,667 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:17:57,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:17:57,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:17:57,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:17:57,668 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:17:57,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:17:58,001 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:17:58,004 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:17:58,006 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:17:58,006 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:17:58,007 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/jain_1-1.c [2020-08-22 16:17:58,069 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da64f6294/d138b420640540a5b6894f486a54e40d/FLAG2e81f46ec [2020-08-22 16:17:58,516 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:17:58,520 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/jain_1-1.c [2020-08-22 16:17:58,527 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da64f6294/d138b420640540a5b6894f486a54e40d/FLAG2e81f46ec [2020-08-22 16:17:58,934 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da64f6294/d138b420640540a5b6894f486a54e40d [2020-08-22 16:17:58,944 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:17:58,946 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:17:58,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:17:58,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:17:58,952 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:17:58,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:17:58" (1/1) ... [2020-08-22 16:17:58,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cb59e33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:58, skipping insertion in model container [2020-08-22 16:17:58,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:17:58" (1/1) ... [2020-08-22 16:17:58,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:17:58,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:17:59,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:17:59,212 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:17:59,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:17:59,246 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:17:59,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:59 WrapperNode [2020-08-22 16:17:59,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:17:59,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:17:59,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:17:59,249 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:17:59,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:59" (1/1) ... [2020-08-22 16:17:59,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:59" (1/1) ... [2020-08-22 16:17:59,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:59" (1/1) ... [2020-08-22 16:17:59,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:59" (1/1) ... [2020-08-22 16:17:59,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:59" (1/1) ... [2020-08-22 16:17:59,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:59" (1/1) ... [2020-08-22 16:17:59,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:59" (1/1) ... [2020-08-22 16:17:59,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:17:59,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:17:59,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:17:59,369 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:17:59,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:59" (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 [2020-08-22 16:17:59,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:17:59,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:17:59,431 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 16:17:59,431 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:17:59,431 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:17:59,431 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-22 16:17:59,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 16:17:59,432 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:17:59,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:17:59,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:17:59,581 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:17:59,582 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 16:17:59,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:17:59 BoogieIcfgContainer [2020-08-22 16:17:59,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:17:59,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:17:59,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:17:59,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:17:59,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:17:58" (1/3) ... [2020-08-22 16:17:59,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a35420c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:17:59, skipping insertion in model container [2020-08-22 16:17:59,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:59" (2/3) ... [2020-08-22 16:17:59,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a35420c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:17:59, skipping insertion in model container [2020-08-22 16:17:59,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:17:59" (3/3) ... [2020-08-22 16:17:59,594 INFO L109 eAbstractionObserver]: Analyzing ICFG jain_1-1.c [2020-08-22 16:17:59,603 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:17:59,611 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:17:59,625 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:17:59,650 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:17:59,650 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:17:59,650 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:17:59,651 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:17:59,651 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:17:59,651 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:17:59,651 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:17:59,651 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:17:59,669 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-08-22 16:17:59,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-22 16:17:59,676 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:17:59,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:17:59,677 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:17:59,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:17:59,684 INFO L82 PathProgramCache]: Analyzing trace with hash -13144129, now seen corresponding path program 1 times [2020-08-22 16:17:59,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:17:59,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345333032] [2020-08-22 16:17:59,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:17:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:59,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:17:59,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:59,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:17:59,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345333032] [2020-08-22 16:17:59,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:17:59,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 16:17:59,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160703982] [2020-08-22 16:17:59,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 16:17:59,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:17:59,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 16:17:59,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:17:59,988 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 6 states. [2020-08-22 16:18:00,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:18:00,082 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2020-08-22 16:18:00,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 16:18:00,084 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-08-22 16:18:00,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:18:00,094 INFO L225 Difference]: With dead ends: 33 [2020-08-22 16:18:00,094 INFO L226 Difference]: Without dead ends: 20 [2020-08-22 16:18:00,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 16:18:00,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-08-22 16:18:00,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-08-22 16:18:00,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-08-22 16:18:00,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-08-22 16:18:00,138 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2020-08-22 16:18:00,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:18:00,139 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-08-22 16:18:00,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 16:18:00,139 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-08-22 16:18:00,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-22 16:18:00,140 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:18:00,140 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:18:00,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:18:00,141 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:18:00,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:18:00,142 INFO L82 PathProgramCache]: Analyzing trace with hash 327764987, now seen corresponding path program 1 times [2020-08-22 16:18:00,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:18:00,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714562427] [2020-08-22 16:18:00,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:18:00,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:00,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:18:00,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:00,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:18:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:00,330 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:18:00,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714562427] [2020-08-22 16:18:00,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117232801] [2020-08-22 16:18:00,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:18:00,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:00,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 14 conjunts are in the unsatisfiable core [2020-08-22 16:18:00,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:18:02,761 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 16:18:02,808 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 16:18:02,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:18:02,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 11 [2020-08-22 16:18:02,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539558045] [2020-08-22 16:18:02,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 16:18:02,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:18:02,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 16:18:02,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=82, Unknown=1, NotChecked=0, Total=110 [2020-08-22 16:18:02,813 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 11 states. [2020-08-22 16:18:02,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:18:02,870 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-08-22 16:18:02,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 16:18:02,871 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 16 [2020-08-22 16:18:02,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:18:02,872 INFO L225 Difference]: With dead ends: 19 [2020-08-22 16:18:02,872 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 16:18:02,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=34, Invalid=97, Unknown=1, NotChecked=0, Total=132 [2020-08-22 16:18:02,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 16:18:02,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 16:18:02,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 16:18:02,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 16:18:02,875 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-08-22 16:18:02,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:18:02,876 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 16:18:02,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 16:18:02,876 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 16:18:02,876 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 16:18:03,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-08-22 16:18:03,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 16:18:03,137 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 16:18:03,138 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-22 16:18:03,138 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-22 16:18:03,138 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 16:18:03,138 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 16:18:03,138 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-22 16:18:03,139 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 10 25) the Hoare annotation is: true [2020-08-22 16:18:03,139 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 25) no Hoare annotation was computed. [2020-08-22 16:18:03,139 INFO L264 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (let ((.cse0 (+ main_~y~0 1))) (<= .cse0 (* 2 (div .cse0 2)))) [2020-08-22 16:18:03,139 INFO L264 CegarLoopResult]: At program point L21-1(lines 16 23) the Hoare annotation is: (let ((.cse0 (+ main_~y~0 1))) (<= .cse0 (* 2 (div .cse0 2)))) [2020-08-22 16:18:03,140 INFO L268 CegarLoopResult]: For program point L16-2(lines 16 23) no Hoare annotation was computed. [2020-08-22 16:18:03,140 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 25) no Hoare annotation was computed. [2020-08-22 16:18:03,140 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2020-08-22 16:18:03,140 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2020-08-22 16:18:03,140 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-08-22 16:18:03,141 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-08-22 16:18:03,141 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-08-22 16:18:03,141 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2020-08-22 16:18:03,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:18:03 BoogieIcfgContainer [2020-08-22 16:18:03,157 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:18:03,160 INFO L168 Benchmark]: Toolchain (without parser) took 4213.28 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 102.9 MB in the beginning and 94.0 MB in the end (delta: 8.9 MB). Peak memory consumption was 70.8 MB. Max. memory is 7.1 GB. [2020-08-22 16:18:03,161 INFO L168 Benchmark]: CDTParser took 1.12 ms. Allocated memory is still 140.5 MB. Free memory was 121.1 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 16:18:03,162 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.12 ms. Allocated memory is still 140.5 MB. Free memory was 102.7 MB in the beginning and 93.5 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-08-22 16:18:03,163 INFO L168 Benchmark]: Boogie Preprocessor took 120.07 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 93.5 MB in the beginning and 180.9 MB in the end (delta: -87.4 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2020-08-22 16:18:03,164 INFO L168 Benchmark]: RCFGBuilder took 217.12 ms. Allocated memory is still 202.4 MB. Free memory was 180.9 MB in the beginning and 169.8 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-08-22 16:18:03,165 INFO L168 Benchmark]: TraceAbstraction took 3570.25 ms. Allocated memory is still 202.4 MB. Free memory was 169.2 MB in the beginning and 94.0 MB in the end (delta: 75.2 MB). Peak memory consumption was 75.2 MB. Max. memory is 7.1 GB. [2020-08-22 16:18:03,169 INFO L336 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 140.5 MB. Free memory was 121.1 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 301.12 ms. Allocated memory is still 140.5 MB. Free memory was 102.7 MB in the beginning and 93.5 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.07 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 93.5 MB in the beginning and 180.9 MB in the end (delta: -87.4 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 217.12 ms. Allocated memory is still 202.4 MB. Free memory was 180.9 MB in the beginning and 169.8 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3570.25 ms. Allocated memory is still 202.4 MB. Free memory was 169.2 MB in the beginning and 94.0 MB in the end (delta: 75.2 MB). Peak memory consumption was 75.2 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: 16]: Loop Invariant Derived loop invariant: y + 1 <= 2 * ((y + 1) / 2) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 13 SDslu, 75 SDs, 0 SdLazy, 40 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=1, 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 13 NumberOfFragments, 27 HoareAnnotationTreeSize, 9 FomulaSimplifications, 22 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 2031 SizeOfPredicates, 3 NumberOfNonLiveVariables, 34 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 4/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...