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_init8_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:53:22,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:53:22,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:53:22,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:53:22,494 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:53:22,496 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:53:22,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:53:22,509 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:53:22,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:53:22,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:53:22,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:53:22,520 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:53:22,520 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:53:22,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:53:22,525 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:53:22,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:53:22,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:53:22,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:53:22,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:53:22,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:53:22,542 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:53:22,546 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:53:22,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:53:22,550 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:53:22,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 19:53:22,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:53:22,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:53:22,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:53:22,567 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 19:53:22,604 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:53:22,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:53:22,609 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:53:22,609 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:53:22,609 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:53:22,610 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:53:22,610 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:53:22,610 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:53:22,610 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:53:22,611 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:53:22,615 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:53:22,616 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:53:22,616 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:53:22,616 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:53:22,616 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:53:22,616 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:53:22,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:53:22,617 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:53:22,617 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:53:22,617 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:53:22,617 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:53:22,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:53:22,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:53:22,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:53:22,620 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:53:22,620 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:53:22,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:53:22,621 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:53:22,621 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 19:53:22,936 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:53:22,953 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:53:22,956 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:53:22,958 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:53:22,958 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:53:22,959 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init8_ground-2.i [2019-10-13 19:53:23,036 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc2f27a04/63ff5785247b448f8e7455dbf2a61cfb/FLAG6b426351f [2019-10-13 19:53:23,540 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:53:23,540 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init8_ground-2.i [2019-10-13 19:53:23,547 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc2f27a04/63ff5785247b448f8e7455dbf2a61cfb/FLAG6b426351f [2019-10-13 19:53:23,882 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc2f27a04/63ff5785247b448f8e7455dbf2a61cfb [2019-10-13 19:53:23,892 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:53:23,894 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:53:23,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:53:23,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:53:23,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:53:23,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:23" (1/1) ... [2019-10-13 19:53:23,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1168eabf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:23, skipping insertion in model container [2019-10-13 19:53:23,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:23" (1/1) ... [2019-10-13 19:53:23,918 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:53:23,943 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:53:24,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:53:24,147 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:53:24,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:53:24,275 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:53:24,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:24 WrapperNode [2019-10-13 19:53:24,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:53:24,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:53:24,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:53:24,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:53:24,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:24" (1/1) ... [2019-10-13 19:53:24,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:24" (1/1) ... [2019-10-13 19:53:24,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:24" (1/1) ... [2019-10-13 19:53:24,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:24" (1/1) ... [2019-10-13 19:53:24,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:24" (1/1) ... [2019-10-13 19:53:24,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:24" (1/1) ... [2019-10-13 19:53:24,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:24" (1/1) ... [2019-10-13 19:53:24,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:53:24,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:53:24,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:53:24,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:53:24,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:24" (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 19:53:24,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:53:24,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:53:24,375 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 19:53:24,375 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:53:24,375 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:53:24,375 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 19:53:24,375 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:53:24,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:53:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:53:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:53:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:53:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:53:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:53:24,705 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:53:24,705 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-10-13 19:53:24,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:24 BoogieIcfgContainer [2019-10-13 19:53:24,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:53:24,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:53:24,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:53:24,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:53:24,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:53:23" (1/3) ... [2019-10-13 19:53:24,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ccd6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:24, skipping insertion in model container [2019-10-13 19:53:24,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:24" (2/3) ... [2019-10-13 19:53:24,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ccd6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:24, skipping insertion in model container [2019-10-13 19:53:24,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:24" (3/3) ... [2019-10-13 19:53:24,724 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_init8_ground-2.i [2019-10-13 19:53:24,734 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:53:24,744 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:53:24,756 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:53:24,792 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:53:24,793 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:53:24,793 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:53:24,793 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:53:24,793 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:53:24,793 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:53:24,793 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:53:24,794 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:53:24,809 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2019-10-13 19:53:24,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-13 19:53:24,816 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:24,817 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] [2019-10-13 19:53:24,819 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:24,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:24,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1916738342, now seen corresponding path program 1 times [2019-10-13 19:53:24,833 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:24,833 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926620765] [2019-10-13 19:53:24,833 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:24,834 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:24,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:24,959 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 19:53:24,960 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926620765] [2019-10-13 19:53:24,961 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:24,962 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 19:53:24,962 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038399254] [2019-10-13 19:53:24,966 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:53:24,968 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:24,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:53:24,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:24,987 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2019-10-13 19:53:25,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:25,015 INFO L93 Difference]: Finished difference Result 67 states and 102 transitions. [2019-10-13 19:53:25,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:53:25,017 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2019-10-13 19:53:25,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:25,026 INFO L225 Difference]: With dead ends: 67 [2019-10-13 19:53:25,027 INFO L226 Difference]: Without dead ends: 32 [2019-10-13 19:53:25,031 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 19:53:25,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-10-13 19:53:25,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-10-13 19:53:25,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-10-13 19:53:25,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2019-10-13 19:53:25,077 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 27 [2019-10-13 19:53:25,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:25,078 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2019-10-13 19:53:25,078 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:53:25,079 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2019-10-13 19:53:25,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-13 19:53:25,080 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:25,080 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] [2019-10-13 19:53:25,081 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:25,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:25,081 INFO L82 PathProgramCache]: Analyzing trace with hash -330794466, now seen corresponding path program 1 times [2019-10-13 19:53:25,082 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:25,082 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195884886] [2019-10-13 19:53:25,082 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:25,083 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:25,083 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:25,150 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 19:53:25,150 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195884886] [2019-10-13 19:53:25,151 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:25,151 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:53:25,151 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102864186] [2019-10-13 19:53:25,153 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:53:25,154 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:25,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:53:25,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:53:25,155 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand 3 states. [2019-10-13 19:53:25,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:25,324 INFO L93 Difference]: Finished difference Result 65 states and 88 transitions. [2019-10-13 19:53:25,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:53:25,326 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2019-10-13 19:53:25,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:25,327 INFO L225 Difference]: With dead ends: 65 [2019-10-13 19:53:25,328 INFO L226 Difference]: Without dead ends: 40 [2019-10-13 19:53:25,330 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 19:53:25,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-10-13 19:53:25,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-10-13 19:53:25,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-10-13 19:53:25,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2019-10-13 19:53:25,351 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2019-10-13 19:53:25,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:25,352 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2019-10-13 19:53:25,352 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:53:25,352 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2019-10-13 19:53:25,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-13 19:53:25,356 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:25,357 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:25,357 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:25,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:25,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1167956326, now seen corresponding path program 1 times [2019-10-13 19:53:25,359 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:25,360 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099428075] [2019-10-13 19:53:25,362 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:25,362 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:25,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:25,498 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-13 19:53:25,499 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099428075] [2019-10-13 19:53:25,499 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636488037] [2019-10-13 19:53:25,499 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 19:53:25,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:25,571 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:53:25,578 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:53:25,608 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-13 19:53:25,609 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 19:53:25,644 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-13 19:53:25,644 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1587628527] [2019-10-13 19:53:25,651 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 36 [2019-10-13 19:53:25,701 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 19:53:25,701 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-13 19:53:25,768 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-13 19:53:25,770 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 17 variables. [2019-10-13 19:53:25,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:25,774 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-13 19:53:25,817 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-13 19:53:25,817 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-13 19:53:25,819 INFO L553 sIntCurrentIteration]: We unified 34 AI predicates to 34 [2019-10-13 19:53:25,820 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-13 19:53:25,821 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-13 19:53:25,821 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 7 [2019-10-13 19:53:25,821 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825333879] [2019-10-13 19:53:25,822 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:53:25,823 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:25,823 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-13 19:53:25,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:53:25,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:25,824 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 2 states. [2019-10-13 19:53:25,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:25,827 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2019-10-13 19:53:25,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:53:25,828 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 35 [2019-10-13 19:53:25,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:25,828 INFO L225 Difference]: With dead ends: 40 [2019-10-13 19:53:25,829 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 19:53:25,830 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 34 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 19:53:25,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 19:53:25,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 19:53:25,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 19:53:25,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 19:53:25,831 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2019-10-13 19:53:25,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:25,831 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 19:53:25,831 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:53:25,832 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 19:53:25,832 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 19:53:26,037 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:26,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 19:53:26,098 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:53:26,099 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:53:26,099 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:53:26,099 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:53:26,100 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 19:53:26,100 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:53:26,100 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:53:26,100 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 3 50) no Hoare annotation was computed. [2019-10-13 19:53:26,100 INFO L439 ceAbstractionStarter]: At program point L11-2(lines 11 14) the Hoare annotation is: false [2019-10-13 19:53:26,100 INFO L443 ceAbstractionStarter]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2019-10-13 19:53:26,101 INFO L439 ceAbstractionStarter]: At program point L36-2(lines 36 39) the Hoare annotation is: false [2019-10-13 19:53:26,101 INFO L443 ceAbstractionStarter]: For program point L36-3(lines 36 39) no Hoare annotation was computed. [2019-10-13 19:53:26,102 INFO L439 ceAbstractionStarter]: At program point L21-2(lines 21 24) the Hoare annotation is: false [2019-10-13 19:53:26,102 INFO L443 ceAbstractionStarter]: For program point L21-3(lines 21 24) no Hoare annotation was computed. [2019-10-13 19:53:26,102 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 3 50) no Hoare annotation was computed. [2019-10-13 19:53:26,102 INFO L443 ceAbstractionStarter]: For program point L46-2(lines 46 48) no Hoare annotation was computed. [2019-10-13 19:53:26,103 INFO L439 ceAbstractionStarter]: At program point L46-3(lines 46 48) the Hoare annotation is: false [2019-10-13 19:53:26,103 INFO L443 ceAbstractionStarter]: For program point L46-4(lines 46 48) no Hoare annotation was computed. [2019-10-13 19:53:26,103 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 3 50) the Hoare annotation is: true [2019-10-13 19:53:26,103 INFO L439 ceAbstractionStarter]: At program point L47(line 47) the Hoare annotation is: false [2019-10-13 19:53:26,103 INFO L443 ceAbstractionStarter]: For program point L47-1(line 47) no Hoare annotation was computed. [2019-10-13 19:53:26,104 INFO L439 ceAbstractionStarter]: At program point L6-2(lines 6 9) the Hoare annotation is: false [2019-10-13 19:53:26,104 INFO L443 ceAbstractionStarter]: For program point L6-3(lines 6 9) no Hoare annotation was computed. [2019-10-13 19:53:26,105 INFO L439 ceAbstractionStarter]: At program point L31-2(lines 31 34) the Hoare annotation is: false [2019-10-13 19:53:26,105 INFO L443 ceAbstractionStarter]: For program point L31-3(lines 31 34) no Hoare annotation was computed. [2019-10-13 19:53:26,105 INFO L439 ceAbstractionStarter]: At program point L16-2(lines 16 19) the Hoare annotation is: false [2019-10-13 19:53:26,105 INFO L443 ceAbstractionStarter]: For program point L16-3(lines 16 19) no Hoare annotation was computed. [2019-10-13 19:53:26,106 INFO L439 ceAbstractionStarter]: At program point L41-2(lines 41 44) the Hoare annotation is: false [2019-10-13 19:53:26,106 INFO L443 ceAbstractionStarter]: For program point L41-3(lines 41 44) no Hoare annotation was computed. [2019-10-13 19:53:26,107 INFO L439 ceAbstractionStarter]: At program point L26-2(lines 26 29) the Hoare annotation is: false [2019-10-13 19:53:26,108 INFO L443 ceAbstractionStarter]: For program point L26-3(lines 26 29) no Hoare annotation was computed. [2019-10-13 19:53:26,108 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-10-13 19:53:26,108 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-10-13 19:53:26,109 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-10-13 19:53:26,109 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-10-13 19:53:26,110 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-10-13 19:53:26,110 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-10-13 19:53:26,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:53:26 BoogieIcfgContainer [2019-10-13 19:53:26,121 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 19:53:26,125 INFO L168 Benchmark]: Toolchain (without parser) took 2229.20 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 103.1 MB in the beginning and 91.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 75.0 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:26,143 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 19:53:26,144 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.27 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 102.9 MB in the beginning and 181.8 MB in the end (delta: -78.8 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:26,145 INFO L168 Benchmark]: Boogie Preprocessor took 38.64 ms. Allocated memory is still 202.4 MB. Free memory was 181.8 MB in the beginning and 179.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:26,145 INFO L168 Benchmark]: RCFGBuilder took 392.07 ms. Allocated memory is still 202.4 MB. Free memory was 179.4 MB in the beginning and 162.6 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:26,148 INFO L168 Benchmark]: TraceAbstraction took 1406.91 ms. Allocated memory is still 202.4 MB. Free memory was 161.9 MB in the beginning and 91.1 MB in the end (delta: 70.8 MB). Peak memory consumption was 70.8 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:26,165 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 376.27 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 102.9 MB in the beginning and 181.8 MB in the end (delta: -78.8 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 38.64 ms. Allocated memory is still 202.4 MB. Free memory was 181.8 MB in the beginning and 179.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 392.07 ms. Allocated memory is still 202.4 MB. Free memory was 179.4 MB in the beginning and 162.6 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1406.91 ms. Allocated memory is still 202.4 MB. Free memory was 161.9 MB in the beginning and 91.1 MB in the end (delta: 70.8 MB). Peak memory consumption was 70.8 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: 46]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 37 locations, 1 error locations. Result: SAFE, OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 82 SDtfs, 0 SDslu, 16 SDs, 0 SdLazy, 24 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=2, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 17 PreInvPairs, 17 NumberOfFragments, 15 HoareAnnotationTreeSize, 17 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 15 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 154 ConstructedInterpolants, 0 QuantifiedInterpolants, 5280 SizeOfPredicates, 1 NumberOfNonLiveVariables, 105 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 21/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 123, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9779411764705882, AVG_VARS_REMOVED_DURING_WEAKENING: 0.47058823529411764, AVG_WEAKENED_CONJUNCTS: 0.17647058823529413, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...