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_copy3_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:52:02,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:52:02,937 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:52:02,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:52:02,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:52:02,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:52:02,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:52:02,967 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:52:02,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:52:02,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:52:02,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:52:02,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:52:02,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:52:02,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:52:02,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:52:02,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:52:02,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:52:02,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:52:02,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:52:02,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:52:02,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:52:03,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:52:03,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:52:03,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:52:03,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:52:03,013 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:52:03,014 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:52:03,015 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:52:03,015 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:52:03,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:52:03,017 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:52:03,018 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:52:03,018 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:52:03,018 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:52:03,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:52:03,020 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:52:03,021 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 [2019-10-14 23:52:03,050 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:52:03,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:52:03,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:52:03,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:52:03,052 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:52:03,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:52:03,053 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:52:03,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:52:03,053 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:52:03,053 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:52:03,053 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:52:03,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:52:03,054 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:52:03,054 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:52:03,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:52:03,054 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:52:03,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:52:03,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:52:03,055 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:52:03,055 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:52:03,055 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:52:03,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:52:03,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:52:03,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:52:03,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:52:03,057 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:52:03,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:52:03,057 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:52:03,057 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 [2019-10-14 23:52:03,351 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:52:03,377 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:52:03,380 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:52:03,382 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:52:03,382 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:52:03,383 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy3_ground-1.i [2019-10-14 23:52:03,461 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a01354a49/5b805457968c46b0a747d86e7323edc5/FLAGff02810fa [2019-10-14 23:52:03,963 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:52:03,964 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy3_ground-1.i [2019-10-14 23:52:03,970 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a01354a49/5b805457968c46b0a747d86e7323edc5/FLAGff02810fa [2019-10-14 23:52:04,324 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a01354a49/5b805457968c46b0a747d86e7323edc5 [2019-10-14 23:52:04,335 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:52:04,336 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:52:04,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:52:04,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:52:04,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:52:04,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:52:04" (1/1) ... [2019-10-14 23:52:04,345 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f383db2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:04, skipping insertion in model container [2019-10-14 23:52:04,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:52:04" (1/1) ... [2019-10-14 23:52:04,353 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:52:04,374 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:52:04,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:52:04,571 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:52:04,597 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:52:04,622 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:52:04,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:04 WrapperNode [2019-10-14 23:52:04,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:52:04,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:52:04,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:52:04,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:52:04,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:04" (1/1) ... [2019-10-14 23:52:04,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:04" (1/1) ... [2019-10-14 23:52:04,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:04" (1/1) ... [2019-10-14 23:52:04,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:04" (1/1) ... [2019-10-14 23:52:04,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:04" (1/1) ... [2019-10-14 23:52:04,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:04" (1/1) ... [2019-10-14 23:52:04,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:04" (1/1) ... [2019-10-14 23:52:04,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:52:04,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:52:04,746 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:52:04,746 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:52:04,747 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:04" (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 [2019-10-14 23:52:04,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:52:04,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:52:04,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-14 23:52:04,812 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:52:04,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:52:04,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:52:04,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:52:04,812 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:52:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:52:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:52:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:52:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:52:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:52:04,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:52:05,158 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:52:05,158 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:52:05,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:52:05 BoogieIcfgContainer [2019-10-14 23:52:05,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:52:05,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:52:05,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:52:05,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:52:05,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:52:04" (1/3) ... [2019-10-14 23:52:05,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@642e6bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:52:05, skipping insertion in model container [2019-10-14 23:52:05,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:04" (2/3) ... [2019-10-14 23:52:05,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@642e6bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:52:05, skipping insertion in model container [2019-10-14 23:52:05,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:52:05" (3/3) ... [2019-10-14 23:52:05,170 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_copy3_ground-1.i [2019-10-14 23:52:05,180 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:52:05,189 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:52:05,202 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:52:05,235 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:52:05,235 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:52:05,235 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:52:05,236 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:52:05,236 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:52:05,236 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:52:05,236 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:52:05,236 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:52:05,251 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-10-14 23:52:05,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-14 23:52:05,257 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:05,258 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:05,260 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:05,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:05,264 INFO L82 PathProgramCache]: Analyzing trace with hash -496428460, now seen corresponding path program 1 times [2019-10-14 23:52:05,272 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:05,272 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564494862] [2019-10-14 23:52:05,272 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:05,273 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:05,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:05,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:52:05,419 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564494862] [2019-10-14 23:52:05,420 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:05,420 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-14 23:52:05,420 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462464427] [2019-10-14 23:52:05,427 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:52:05,429 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:05,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:52:05,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:05,446 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2019-10-14 23:52:05,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:05,472 INFO L93 Difference]: Finished difference Result 58 states and 77 transitions. [2019-10-14 23:52:05,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:52:05,474 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2019-10-14 23:52:05,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:05,483 INFO L225 Difference]: With dead ends: 58 [2019-10-14 23:52:05,484 INFO L226 Difference]: Without dead ends: 28 [2019-10-14 23:52:05,487 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 [2019-10-14 23:52:05,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-14 23:52:05,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-10-14 23:52:05,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-14 23:52:05,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2019-10-14 23:52:05,532 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 19 [2019-10-14 23:52:05,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:05,533 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2019-10-14 23:52:05,533 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:52:05,534 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2019-10-14 23:52:05,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-14 23:52:05,535 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:05,535 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:05,535 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:05,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:05,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1263989582, now seen corresponding path program 1 times [2019-10-14 23:52:05,536 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:05,537 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745461217] [2019-10-14 23:52:05,537 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:05,537 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:05,538 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:05,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:05,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:52:05,651 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745461217] [2019-10-14 23:52:05,652 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:05,652 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:52:05,652 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766232431] [2019-10-14 23:52:05,659 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:52:05,660 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:05,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:52:05,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:52:05,661 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 3 states. [2019-10-14 23:52:05,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:05,705 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2019-10-14 23:52:05,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:52:05,706 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-10-14 23:52:05,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:05,707 INFO L225 Difference]: With dead ends: 50 [2019-10-14 23:52:05,707 INFO L226 Difference]: Without dead ends: 30 [2019-10-14 23:52:05,710 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 [2019-10-14 23:52:05,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-10-14 23:52:05,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2019-10-14 23:52:05,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-14 23:52:05,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2019-10-14 23:52:05,721 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 19 [2019-10-14 23:52:05,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:05,721 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2019-10-14 23:52:05,722 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:52:05,722 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2019-10-14 23:52:05,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-14 23:52:05,725 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:05,726 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:05,727 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:05,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:05,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1258945684, now seen corresponding path program 1 times [2019-10-14 23:52:05,728 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:05,730 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621229769] [2019-10-14 23:52:05,730 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:05,730 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:05,730 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:05,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:05,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:52:05,807 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621229769] [2019-10-14 23:52:05,807 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:05,807 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:52:05,807 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398736464] [2019-10-14 23:52:05,808 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:52:05,808 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:05,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:52:05,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:52:05,811 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 3 states. [2019-10-14 23:52:05,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:05,887 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2019-10-14 23:52:05,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:52:05,888 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2019-10-14 23:52:05,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:05,891 INFO L225 Difference]: With dead ends: 52 [2019-10-14 23:52:05,892 INFO L226 Difference]: Without dead ends: 35 [2019-10-14 23:52:05,893 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 [2019-10-14 23:52:05,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-14 23:52:05,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2019-10-14 23:52:05,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-10-14 23:52:05,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2019-10-14 23:52:05,905 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 21 [2019-10-14 23:52:05,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:05,905 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2019-10-14 23:52:05,905 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:52:05,906 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2019-10-14 23:52:05,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-14 23:52:05,909 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:05,909 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:05,909 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:05,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:05,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1930458438, now seen corresponding path program 1 times [2019-10-14 23:52:05,911 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:05,911 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259533974] [2019-10-14 23:52:05,911 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:05,911 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:05,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:06,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:52:06,012 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259533974] [2019-10-14 23:52:06,013 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367095111] [2019-10-14 23:52:06,013 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 [2019-10-14 23:52:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:06,091 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:52:06,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:52:06,142 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:52:06,142 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:52:06,189 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:52:06,190 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1748939171] [2019-10-14 23:52:06,196 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 28 [2019-10-14 23:52:06,254 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-14 23:52:06,255 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-14 23:52:06,318 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-14 23:52:06,320 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 33 variables. [2019-10-14 23:52:06,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:06,323 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-14 23:52:06,371 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-14 23:52:06,372 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-14 23:52:06,375 INFO L553 sIntCurrentIteration]: We unified 26 AI predicates to 26 [2019-10-14 23:52:06,375 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-14 23:52:06,376 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-14 23:52:06,376 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 7 [2019-10-14 23:52:06,377 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889158362] [2019-10-14 23:52:06,377 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:52:06,378 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:06,378 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-14 23:52:06,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:52:06,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:06,379 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 2 states. [2019-10-14 23:52:06,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:06,387 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2019-10-14 23:52:06,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:52:06,387 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2019-10-14 23:52:06,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:06,388 INFO L225 Difference]: With dead ends: 32 [2019-10-14 23:52:06,388 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:52:06,389 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:06,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:52:06,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:52:06,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:52:06,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:52:06,390 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2019-10-14 23:52:06,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:06,390 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:52:06,391 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:52:06,391 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:52:06,391 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:52:06,594 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:52:06,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:52:06,631 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:52:06,632 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:52:06,632 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:52:06,632 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:52:06,632 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-14 23:52:06,633 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:52:06,633 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:52:06,633 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 4 28) no Hoare annotation was computed. [2019-10-14 23:52:06,633 INFO L443 ceAbstractionStarter]: For program point L24-2(lines 24 26) no Hoare annotation was computed. [2019-10-14 23:52:06,633 INFO L439 ceAbstractionStarter]: At program point L24-3(lines 24 26) the Hoare annotation is: false [2019-10-14 23:52:06,633 INFO L443 ceAbstractionStarter]: For program point L24-4(lines 24 26) no Hoare annotation was computed. [2019-10-14 23:52:06,633 INFO L443 ceAbstractionStarter]: For program point L20-2(lines 20 22) no Hoare annotation was computed. [2019-10-14 23:52:06,634 INFO L439 ceAbstractionStarter]: At program point L20-3(lines 20 22) the Hoare annotation is: false [2019-10-14 23:52:06,634 INFO L443 ceAbstractionStarter]: For program point L20-4(lines 20 22) no Hoare annotation was computed. [2019-10-14 23:52:06,634 INFO L439 ceAbstractionStarter]: At program point L25(line 25) the Hoare annotation is: false [2019-10-14 23:52:06,635 INFO L443 ceAbstractionStarter]: For program point L25-1(line 25) no Hoare annotation was computed. [2019-10-14 23:52:06,635 INFO L443 ceAbstractionStarter]: For program point L17-2(lines 17 19) no Hoare annotation was computed. [2019-10-14 23:52:06,635 INFO L439 ceAbstractionStarter]: At program point L17-3(lines 17 19) the Hoare annotation is: false [2019-10-14 23:52:06,636 INFO L443 ceAbstractionStarter]: For program point L17-4(lines 17 19) no Hoare annotation was computed. [2019-10-14 23:52:06,637 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 4 28) no Hoare annotation was computed. [2019-10-14 23:52:06,637 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 4 28) the Hoare annotation is: true [2019-10-14 23:52:06,637 INFO L443 ceAbstractionStarter]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2019-10-14 23:52:06,637 INFO L439 ceAbstractionStarter]: At program point L14-3(lines 14 16) the Hoare annotation is: false [2019-10-14 23:52:06,637 INFO L443 ceAbstractionStarter]: For program point L14-4(lines 14 16) no Hoare annotation was computed. [2019-10-14 23:52:06,637 INFO L443 ceAbstractionStarter]: For program point L10-2(lines 10 12) no Hoare annotation was computed. [2019-10-14 23:52:06,638 INFO L439 ceAbstractionStarter]: At program point L10-3(lines 10 12) the Hoare annotation is: false [2019-10-14 23:52:06,638 INFO L443 ceAbstractionStarter]: For program point L10-4(lines 10 12) no Hoare annotation was computed. [2019-10-14 23:52:06,638 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-10-14 23:52:06,639 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-10-14 23:52:06,639 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-10-14 23:52:06,639 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-10-14 23:52:06,639 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-10-14 23:52:06,639 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-10-14 23:52:06,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:52:06 BoogieIcfgContainer [2019-10-14 23:52:06,651 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:52:06,655 INFO L168 Benchmark]: Toolchain (without parser) took 2316.75 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 103.4 MB in the beginning and 92.1 MB in the end (delta: 11.4 MB). Peak memory consumption was 68.0 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:06,658 INFO L168 Benchmark]: CDTParser took 1.33 ms. Allocated memory is still 145.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-10-14 23:52:06,659 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.21 ms. Allocated memory is still 145.8 MB. Free memory was 103.2 MB in the beginning and 93.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:06,661 INFO L168 Benchmark]: Boogie Preprocessor took 121.17 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 93.1 MB in the beginning and 180.1 MB in the end (delta: -87.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:06,668 INFO L168 Benchmark]: RCFGBuilder took 414.79 ms. Allocated memory is still 202.4 MB. Free memory was 180.1 MB in the beginning and 163.4 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:06,669 INFO L168 Benchmark]: TraceAbstraction took 1489.09 ms. Allocated memory is still 202.4 MB. Free memory was 162.7 MB in the beginning and 92.1 MB in the end (delta: 70.6 MB). Peak memory consumption was 70.6 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:06,682 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.33 ms. Allocated memory is still 145.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 286.21 ms. Allocated memory is still 145.8 MB. Free memory was 103.2 MB in the beginning and 93.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.17 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 93.1 MB in the beginning and 180.1 MB in the end (delta: -87.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 414.79 ms. Allocated memory is still 202.4 MB. Free memory was 180.1 MB in the beginning and 163.4 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1489.09 ms. Allocated memory is still 202.4 MB. Free memory was 162.7 MB in the beginning and 92.1 MB in the end (delta: 70.6 MB). Peak memory consumption was 70.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: 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: 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 33 locations, 1 error locations. Result: SAFE, OverallTime: 1.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 98 SDtfs, 4 SDslu, 48 SDs, 0 SdLazy, 20 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 14 PreInvPairs, 14 NumberOfFragments, 11 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 134 ConstructedInterpolants, 0 QuantifiedInterpolants, 3620 SizeOfPredicates, 1 NumberOfNonLiveVariables, 99 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: 0.9134615384615384, AVG_VARS_REMOVED_DURING_WEAKENING: 1.0, AVG_WEAKENED_CONJUNCTS: 0.23076923076923078, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...