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/array-examples/standard_strcpy_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:53:28,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:53:28,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:53:28,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:53:28,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:53:28,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:53:28,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:53:28,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:53:28,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:53:28,894 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:53:28,895 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:53:28,897 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:53:28,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:53:28,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:53:28,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:53:28,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:53:28,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:53:28,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:53:28,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:53:28,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:53:28,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:53:28,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:53:28,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:53:28,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:53:28,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 19:53:28,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:53:28,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:53:28,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:53:28,927 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 [2019-10-13 19:53:28,943 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:53:28,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:53:28,944 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:53:28,945 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:53:28,945 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:53:28,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:53:28,945 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:53:28,946 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:53:28,946 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:53:28,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:53:28,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:53:28,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:53:28,947 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:53:28,947 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:53:28,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:53:28,947 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:53:28,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:53:28,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:53:28,948 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:53:28,948 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:53:28,948 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:53:28,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:53:28,949 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:53:28,949 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:53:28,949 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:53:28,949 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:53:28,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:53:28,950 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:53:28,950 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 [2019-10-13 19:53:29,248 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:53:29,262 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:53:29,266 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:53:29,268 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:53:29,268 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:53:29,269 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_strcpy_ground-1.i [2019-10-13 19:53:29,351 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c1df718c/911aef7e997e4bd6adff679e646b2ea7/FLAG6ef0a2a22 [2019-10-13 19:53:29,800 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:53:29,802 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_strcpy_ground-1.i [2019-10-13 19:53:29,808 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c1df718c/911aef7e997e4bd6adff679e646b2ea7/FLAG6ef0a2a22 [2019-10-13 19:53:30,201 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c1df718c/911aef7e997e4bd6adff679e646b2ea7 [2019-10-13 19:53:30,213 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:53:30,215 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:53:30,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:53:30,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:53:30,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:53:30,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:30" (1/1) ... [2019-10-13 19:53:30,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e9b8ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:30, skipping insertion in model container [2019-10-13 19:53:30,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:30" (1/1) ... [2019-10-13 19:53:30,234 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:53:30,251 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:53:30,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:53:30,443 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:53:30,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:53:30,481 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:53:30,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:30 WrapperNode [2019-10-13 19:53:30,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:53:30,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:53:30,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:53:30,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:53:30,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:30" (1/1) ... [2019-10-13 19:53:30,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:30" (1/1) ... [2019-10-13 19:53:30,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:30" (1/1) ... [2019-10-13 19:53:30,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:30" (1/1) ... [2019-10-13 19:53:30,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:30" (1/1) ... [2019-10-13 19:53:30,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:30" (1/1) ... [2019-10-13 19:53:30,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:30" (1/1) ... [2019-10-13 19:53:30,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:53:30,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:53:30,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:53:30,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:53:30,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:30" (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 [2019-10-13 19:53:30,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:53:30,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:53:30,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 19:53:30,679 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:53:30,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:53:30,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:53:30,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 19:53:30,680 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:53:30,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:53:30,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:53:30,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:53:30,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:53:30,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:53:30,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:53:30,979 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:53:30,979 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-13 19:53:30,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:30 BoogieIcfgContainer [2019-10-13 19:53:30,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:53:30,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:53:30,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:53:30,998 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:53:30,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:53:30" (1/3) ... [2019-10-13 19:53:31,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58e153fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:31, skipping insertion in model container [2019-10-13 19:53:31,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:30" (2/3) ... [2019-10-13 19:53:31,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58e153fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:31, skipping insertion in model container [2019-10-13 19:53:31,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:30" (3/3) ... [2019-10-13 19:53:31,005 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_strcpy_ground-1.i [2019-10-13 19:53:31,026 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:53:31,044 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:53:31,054 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:53:31,083 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:53:31,084 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:53:31,084 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:53:31,084 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:53:31,084 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:53:31,084 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:53:31,084 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:53:31,085 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:53:31,100 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-10-13 19:53:31,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-13 19:53:31,105 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:31,106 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:31,108 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:31,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:31,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1224509072, now seen corresponding path program 1 times [2019-10-13 19:53:31,120 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:31,121 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633447849] [2019-10-13 19:53:31,121 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:31,121 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:31,121 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:31,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:31,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:53:31,245 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633447849] [2019-10-13 19:53:31,246 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:31,246 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 19:53:31,247 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460779046] [2019-10-13 19:53:31,251 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:53:31,253 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:31,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:53:31,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:31,271 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2019-10-13 19:53:31,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:31,296 INFO L93 Difference]: Finished difference Result 45 states and 58 transitions. [2019-10-13 19:53:31,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:53:31,298 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-10-13 19:53:31,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:31,307 INFO L225 Difference]: With dead ends: 45 [2019-10-13 19:53:31,307 INFO L226 Difference]: Without dead ends: 21 [2019-10-13 19:53:31,311 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 [2019-10-13 19:53:31,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-13 19:53:31,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-13 19:53:31,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-13 19:53:31,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2019-10-13 19:53:31,353 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 14 [2019-10-13 19:53:31,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:31,354 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2019-10-13 19:53:31,354 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:53:31,355 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2019-10-13 19:53:31,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-13 19:53:31,356 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:31,356 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:31,356 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:31,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:31,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1351700691, now seen corresponding path program 1 times [2019-10-13 19:53:31,357 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:31,358 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063171687] [2019-10-13 19:53:31,358 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:31,358 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:31,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:31,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:53:31,433 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063171687] [2019-10-13 19:53:31,433 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:31,434 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:53:31,436 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154584123] [2019-10-13 19:53:31,438 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:53:31,439 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:31,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:53:31,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:53:31,440 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 3 states. [2019-10-13 19:53:31,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:31,476 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2019-10-13 19:53:31,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:53:31,481 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-10-13 19:53:31,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:31,482 INFO L225 Difference]: With dead ends: 36 [2019-10-13 19:53:31,482 INFO L226 Difference]: Without dead ends: 22 [2019-10-13 19:53:31,487 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:53:31,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-13 19:53:31,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-10-13 19:53:31,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-13 19:53:31,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-10-13 19:53:31,502 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 16 [2019-10-13 19:53:31,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:31,503 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-10-13 19:53:31,503 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:53:31,503 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-10-13 19:53:31,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-13 19:53:31,504 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:31,505 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:31,505 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:31,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:31,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1495374293, now seen corresponding path program 1 times [2019-10-13 19:53:31,506 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:31,507 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601826512] [2019-10-13 19:53:31,507 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:31,507 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:31,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:31,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:53:31,628 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601826512] [2019-10-13 19:53:31,629 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:31,629 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:53:31,629 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985572584] [2019-10-13 19:53:31,630 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:53:31,630 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:31,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:53:31,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:53:31,632 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 4 states. [2019-10-13 19:53:31,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:31,681 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2019-10-13 19:53:31,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:53:31,683 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-10-13 19:53:31,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:31,685 INFO L225 Difference]: With dead ends: 37 [2019-10-13 19:53:31,685 INFO L226 Difference]: Without dead ends: 25 [2019-10-13 19:53:31,686 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:53:31,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-13 19:53:31,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-10-13 19:53:31,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-13 19:53:31,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2019-10-13 19:53:31,697 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 17 [2019-10-13 19:53:31,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:31,699 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2019-10-13 19:53:31,699 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:53:31,699 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2019-10-13 19:53:31,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-13 19:53:31,701 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:31,702 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:31,702 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:31,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:31,703 INFO L82 PathProgramCache]: Analyzing trace with hash 967402426, now seen corresponding path program 1 times [2019-10-13 19:53:31,703 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:31,704 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594527741] [2019-10-13 19:53:31,704 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:31,704 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:31,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:31,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:31,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:53:31,820 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594527741] [2019-10-13 19:53:31,820 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941411867] [2019-10-13 19:53:31,820 INFO L94 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 [2019-10-13 19:53:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:31,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:53:31,892 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:53:31,923 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:53:31,923 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 19:53:31,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:53:31,962 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [531716990] [2019-10-13 19:53:31,968 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 21 [2019-10-13 19:53:32,024 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 19:53:32,025 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-13 19:53:32,091 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-13 19:53:32,092 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 15 root evaluator evaluations with a maximum evaluation depth of 0. Performed 15 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 25 variables. [2019-10-13 19:53:32,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:32,095 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-13 19:53:32,129 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-13 19:53:32,130 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-13 19:53:32,131 INFO L553 sIntCurrentIteration]: We unified 19 AI predicates to 19 [2019-10-13 19:53:32,132 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-13 19:53:32,132 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-13 19:53:32,133 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 7 [2019-10-13 19:53:32,133 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300300244] [2019-10-13 19:53:32,134 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:53:32,135 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:32,135 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-13 19:53:32,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:53:32,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:32,136 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 2 states. [2019-10-13 19:53:32,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:32,138 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2019-10-13 19:53:32,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:53:32,139 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2019-10-13 19:53:32,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:32,139 INFO L225 Difference]: With dead ends: 25 [2019-10-13 19:53:32,139 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 19:53:32,140 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:32,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 19:53:32,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 19:53:32,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 19:53:32,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 19:53:32,142 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2019-10-13 19:53:32,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:32,142 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 19:53:32,142 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:53:32,142 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 19:53:32,143 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 19:53:32,348 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:32,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 19:53:32,398 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:53:32,399 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:53:32,399 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:53:32,399 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:53:32,399 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 19:53:32,400 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:53:32,400 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:53:32,400 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 4 24) no Hoare annotation was computed. [2019-10-13 19:53:32,400 INFO L439 ceAbstractionStarter]: At program point L21(line 21) the Hoare annotation is: false [2019-10-13 19:53:32,401 INFO L443 ceAbstractionStarter]: For program point L21-1(line 21) no Hoare annotation was computed. [2019-10-13 19:53:32,401 INFO L443 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2019-10-13 19:53:32,401 INFO L443 ceAbstractionStarter]: For program point L15-2(lines 15 18) no Hoare annotation was computed. [2019-10-13 19:53:32,401 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 4 24) no Hoare annotation was computed. [2019-10-13 19:53:32,402 INFO L443 ceAbstractionStarter]: For program point L15-4(lines 4 24) no Hoare annotation was computed. [2019-10-13 19:53:32,402 INFO L443 ceAbstractionStarter]: For program point L15-5(lines 15 18) no Hoare annotation was computed. [2019-10-13 19:53:32,402 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 4 24) the Hoare annotation is: true [2019-10-13 19:53:32,402 INFO L443 ceAbstractionStarter]: For program point L20-2(lines 20 22) no Hoare annotation was computed. [2019-10-13 19:53:32,402 INFO L439 ceAbstractionStarter]: At program point L20-3(lines 20 22) the Hoare annotation is: (and (= main_~x~0 0) (= main_~i~0 0)) [2019-10-13 19:53:32,402 INFO L443 ceAbstractionStarter]: For program point L20-4(lines 20 22) no Hoare annotation was computed. [2019-10-13 19:53:32,403 INFO L439 ceAbstractionStarter]: At program point L10-2(lines 10 13) the Hoare annotation is: false [2019-10-13 19:53:32,403 INFO L443 ceAbstractionStarter]: For program point L3-3(line 3) no Hoare annotation was computed. [2019-10-13 19:53:32,403 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 3) the Hoare annotation is: true [2019-10-13 19:53:32,403 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 3) no Hoare annotation was computed. [2019-10-13 19:53:32,403 INFO L443 ceAbstractionStarter]: For program point L3(line 3) no Hoare annotation was computed. [2019-10-13 19:53:32,404 INFO L443 ceAbstractionStarter]: For program point L3-1(line 3) no Hoare annotation was computed. [2019-10-13 19:53:32,404 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2019-10-13 19:53:32,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:53:32 BoogieIcfgContainer [2019-10-13 19:53:32,425 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 19:53:32,430 INFO L168 Benchmark]: Toolchain (without parser) took 2212.57 ms. Allocated memory was 144.2 MB in the beginning and 200.8 MB in the end (delta: 56.6 MB). Free memory was 102.3 MB in the beginning and 96.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 62.0 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:32,432 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 144.2 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-10-13 19:53:32,434 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.58 ms. Allocated memory is still 144.2 MB. Free memory was 102.1 MB in the beginning and 92.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:32,436 INFO L168 Benchmark]: Boogie Preprocessor took 139.57 ms. Allocated memory was 144.2 MB in the beginning and 200.8 MB in the end (delta: 56.6 MB). Free memory was 92.2 MB in the beginning and 178.2 MB in the end (delta: -86.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:32,440 INFO L168 Benchmark]: RCFGBuilder took 359.48 ms. Allocated memory is still 200.8 MB. Free memory was 178.2 MB in the beginning and 163.2 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:32,441 INFO L168 Benchmark]: TraceAbstraction took 1436.94 ms. Allocated memory is still 200.8 MB. Free memory was 163.2 MB in the beginning and 96.9 MB in the end (delta: 66.2 MB). Peak memory consumption was 66.2 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:32,447 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 144.2 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 263.58 ms. Allocated memory is still 144.2 MB. Free memory was 102.1 MB in the beginning and 92.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 139.57 ms. Allocated memory was 144.2 MB in the beginning and 200.8 MB in the end (delta: 56.6 MB). Free memory was 92.2 MB in the beginning and 178.2 MB in the end (delta: -86.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 359.48 ms. Allocated memory is still 200.8 MB. Free memory was 178.2 MB in the beginning and 163.2 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1436.94 ms. Allocated memory is still 200.8 MB. Free memory was 163.2 MB in the beginning and 96.9 MB in the end (delta: 66.2 MB). Peak memory consumption was 66.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 20]: Loop Invariant Derived loop invariant: x == 0 && i == 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. Result: SAFE, OverallTime: 1.3s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 78 SDtfs, 2 SDslu, 42 SDs, 0 SdLazy, 13 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 11 PreInvPairs, 12 NumberOfFragments, 14 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 101 ConstructedInterpolants, 0 QuantifiedInterpolants, 2279 SizeOfPredicates, 1 NumberOfNonLiveVariables, 83 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 10/13 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 127, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9210526315789473, AVG_VARS_REMOVED_DURING_WEAKENING: 1.0526315789473684, AVG_WEAKENED_CONJUNCTS: 0.3157894736842105, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...