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/loops/string-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:07:09,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:07:09,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:07:09,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:07:09,714 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:07:09,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:07:09,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:07:09,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:07:09,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:07:09,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:07:09,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:07:09,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:07:09,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:07:09,724 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:07:09,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:07:09,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:07:09,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:07:09,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:07:09,730 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:07:09,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:07:09,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:07:09,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:07:09,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:07:09,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:07:09,738 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:07:09,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:07:09,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:07:09,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:07:09,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:07:09,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:07:09,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:07:09,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:07:09,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:07:09,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:07:09,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:07:09,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:07:09,748 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 21:07:09,761 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:07:09,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:07:09,763 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:07:09,763 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:07:09,763 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:07:09,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:07:09,764 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:07:09,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:07:09,764 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:07:09,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:07:09,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:07:09,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:07:09,765 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:07:09,765 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:07:09,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:07:09,765 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:07:09,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:07:09,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:07:09,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:07:09,766 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:07:09,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:07:09,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:07:09,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:07:09,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:07:09,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:07:09,767 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:07:09,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:07:09,768 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:07:09,768 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 21:07:10,043 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:07:10,056 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:07:10,059 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:07:10,061 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:07:10,061 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:07:10,062 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/string-1.i [2019-10-13 21:07:10,138 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24fce1386/dd4591a8c5a4470fb5d24eada602dde1/FLAG4fc08d9a8 [2019-10-13 21:07:10,577 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:07:10,577 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/string-1.i [2019-10-13 21:07:10,584 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24fce1386/dd4591a8c5a4470fb5d24eada602dde1/FLAG4fc08d9a8 [2019-10-13 21:07:10,942 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24fce1386/dd4591a8c5a4470fb5d24eada602dde1 [2019-10-13 21:07:10,952 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:07:10,954 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:07:10,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:07:10,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:07:10,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:07:10,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:07:10" (1/1) ... [2019-10-13 21:07:10,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3267169b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:10, skipping insertion in model container [2019-10-13 21:07:10,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:07:10" (1/1) ... [2019-10-13 21:07:10,970 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:07:10,989 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:07:11,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:07:11,194 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:07:11,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:07:11,241 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:07:11,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:11 WrapperNode [2019-10-13 21:07:11,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:07:11,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:07:11,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:07:11,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:07:11,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:11" (1/1) ... [2019-10-13 21:07:11,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:11" (1/1) ... [2019-10-13 21:07:11,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:11" (1/1) ... [2019-10-13 21:07:11,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:11" (1/1) ... [2019-10-13 21:07:11,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:11" (1/1) ... [2019-10-13 21:07:11,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:11" (1/1) ... [2019-10-13 21:07:11,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:11" (1/1) ... [2019-10-13 21:07:11,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:07:11,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:07:11,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:07:11,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:07:11,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:11" (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 21:07:11,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:07:11,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:07:11,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 21:07:11,442 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:07:11,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:07:11,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 21:07:11,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 21:07:11,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-13 21:07:11,443 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:07:11,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:07:11,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:07:11,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:07:11,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:07:11,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:07:11,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:07:11,743 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:07:11,743 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 21:07:11,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:07:11 BoogieIcfgContainer [2019-10-13 21:07:11,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:07:11,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:07:11,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:07:11,749 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:07:11,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:07:10" (1/3) ... [2019-10-13 21:07:11,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f43aa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:07:11, skipping insertion in model container [2019-10-13 21:07:11,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:11" (2/3) ... [2019-10-13 21:07:11,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f43aa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:07:11, skipping insertion in model container [2019-10-13 21:07:11,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:07:11" (3/3) ... [2019-10-13 21:07:11,752 INFO L109 eAbstractionObserver]: Analyzing ICFG string-1.i [2019-10-13 21:07:11,762 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:07:11,771 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:07:11,782 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:07:11,806 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:07:11,806 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:07:11,806 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:07:11,806 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:07:11,807 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:07:11,807 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:07:11,807 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:07:11,807 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:07:11,823 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2019-10-13 21:07:11,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-13 21:07:11,829 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:07:11,830 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] [2019-10-13 21:07:11,832 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:07:11,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:07:11,838 INFO L82 PathProgramCache]: Analyzing trace with hash -99599224, now seen corresponding path program 1 times [2019-10-13 21:07:11,845 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:07:11,845 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862190017] [2019-10-13 21:07:11,845 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:07:11,845 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:07:11,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:07:11,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:07:11,972 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 21:07:11,973 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862190017] [2019-10-13 21:07:11,973 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:07:11,974 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:07:11,974 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497069045] [2019-10-13 21:07:11,978 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:07:11,980 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:07:11,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:07:11,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:07:11,997 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2019-10-13 21:07:12,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:07:12,024 INFO L93 Difference]: Finished difference Result 62 states and 89 transitions. [2019-10-13 21:07:12,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:07:12,026 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2019-10-13 21:07:12,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:07:12,034 INFO L225 Difference]: With dead ends: 62 [2019-10-13 21:07:12,035 INFO L226 Difference]: Without dead ends: 28 [2019-10-13 21:07:12,039 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 21:07:12,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-13 21:07:12,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-10-13 21:07:12,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-13 21:07:12,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-10-13 21:07:12,080 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 22 [2019-10-13 21:07:12,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:07:12,081 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-10-13 21:07:12,081 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:07:12,081 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-10-13 21:07:12,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-13 21:07:12,083 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:07:12,083 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] [2019-10-13 21:07:12,083 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:07:12,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:07:12,084 INFO L82 PathProgramCache]: Analyzing trace with hash 930552028, now seen corresponding path program 1 times [2019-10-13 21:07:12,085 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:07:12,085 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16430736] [2019-10-13 21:07:12,085 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:07:12,086 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:07:12,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:07:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:07:12,145 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 21:07:12,146 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16430736] [2019-10-13 21:07:12,147 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:07:12,147 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:07:12,147 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144255759] [2019-10-13 21:07:12,149 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:07:12,149 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:07:12,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:07:12,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:07:12,150 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 3 states. [2019-10-13 21:07:12,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:07:12,249 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2019-10-13 21:07:12,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:07:12,252 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-10-13 21:07:12,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:07:12,257 INFO L225 Difference]: With dead ends: 56 [2019-10-13 21:07:12,258 INFO L226 Difference]: Without dead ends: 36 [2019-10-13 21:07:12,259 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 21:07:12,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-10-13 21:07:12,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2019-10-13 21:07:12,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-13 21:07:12,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-10-13 21:07:12,280 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 24 [2019-10-13 21:07:12,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:07:12,281 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-10-13 21:07:12,281 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:07:12,281 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-10-13 21:07:12,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-13 21:07:12,283 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:07:12,283 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] [2019-10-13 21:07:12,284 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:07:12,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:07:12,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1358146588, now seen corresponding path program 1 times [2019-10-13 21:07:12,286 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:07:12,286 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865426481] [2019-10-13 21:07:12,286 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:07:12,286 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:07:12,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:07:12,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:07:12,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:07:12,379 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865426481] [2019-10-13 21:07:12,379 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950491750] [2019-10-13 21:07:12,380 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 21:07:12,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:07:12,465 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:07:12,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:07:12,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:07:12,523 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:07:12,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:07:12,571 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1511986547] [2019-10-13 21:07:12,580 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 29 [2019-10-13 21:07:12,617 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 21:07:12,617 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-13 21:07:12,674 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-13 21:07:12,676 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 29 variables. [2019-10-13 21:07:12,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:07:12,680 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-13 21:07:12,715 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-13 21:07:12,716 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-13 21:07:12,718 INFO L553 sIntCurrentIteration]: We unified 27 AI predicates to 27 [2019-10-13 21:07:12,718 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-13 21:07:12,719 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-13 21:07:12,719 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 7 [2019-10-13 21:07:12,719 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25633703] [2019-10-13 21:07:12,720 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:07:12,721 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-13 21:07:12,721 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-13 21:07:12,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:07:12,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:07:12,722 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 2 states. [2019-10-13 21:07:12,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:07:12,724 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2019-10-13 21:07:12,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:07:12,725 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 28 [2019-10-13 21:07:12,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:07:12,725 INFO L225 Difference]: With dead ends: 30 [2019-10-13 21:07:12,725 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 21:07:12,726 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 27 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 21:07:12,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 21:07:12,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 21:07:12,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 21:07:12,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 21:07:12,727 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2019-10-13 21:07:12,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:07:12,728 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 21:07:12,728 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:07:12,728 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 21:07:12,728 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 21:07:12,940 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:07:12,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 21:07:12,970 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 21:07:12,970 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 21:07:12,970 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 21:07:12,970 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 21:07:12,971 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 21:07:12,971 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 21:07:12,971 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 21:07:12,971 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 14 58) no Hoare annotation was computed. [2019-10-13 21:07:12,971 INFO L443 ceAbstractionStarter]: For program point L23-2(lines 23 24) no Hoare annotation was computed. [2019-10-13 21:07:12,971 INFO L439 ceAbstractionStarter]: At program point L23-3(lines 23 24) the Hoare annotation is: false [2019-10-13 21:07:12,972 INFO L443 ceAbstractionStarter]: For program point L23-4(lines 23 24) no Hoare annotation was computed. [2019-10-13 21:07:12,972 INFO L443 ceAbstractionStarter]: For program point L19-2(lines 19 20) no Hoare annotation was computed. [2019-10-13 21:07:12,972 INFO L439 ceAbstractionStarter]: At program point L19-3(lines 19 20) the Hoare annotation is: false [2019-10-13 21:07:12,972 INFO L443 ceAbstractionStarter]: For program point L19-4(lines 19 20) no Hoare annotation was computed. [2019-10-13 21:07:12,972 INFO L443 ceAbstractionStarter]: For program point L32-1(lines 32 33) no Hoare annotation was computed. [2019-10-13 21:07:12,972 INFO L439 ceAbstractionStarter]: At program point L32-3(lines 32 33) the Hoare annotation is: false [2019-10-13 21:07:12,973 INFO L443 ceAbstractionStarter]: For program point L32-4(lines 15 58) no Hoare annotation was computed. [2019-10-13 21:07:12,973 INFO L443 ceAbstractionStarter]: For program point L28-1(lines 28 29) no Hoare annotation was computed. [2019-10-13 21:07:12,973 INFO L439 ceAbstractionStarter]: At program point L28-3(lines 28 29) the Hoare annotation is: false [2019-10-13 21:07:12,973 INFO L443 ceAbstractionStarter]: For program point L28-4(lines 28 29) no Hoare annotation was computed. [2019-10-13 21:07:12,973 INFO L443 ceAbstractionStarter]: For program point L41(lines 41 50) no Hoare annotation was computed. [2019-10-13 21:07:12,974 INFO L439 ceAbstractionStarter]: At program point L41-2(lines 39 51) the Hoare annotation is: false [2019-10-13 21:07:12,974 INFO L443 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2019-10-13 21:07:12,974 INFO L443 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-10-13 21:07:12,974 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 14 58) no Hoare annotation was computed. [2019-10-13 21:07:12,974 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 14 58) the Hoare annotation is: true [2019-10-13 21:07:12,974 INFO L439 ceAbstractionStarter]: At program point L55(line 55) the Hoare annotation is: false [2019-10-13 21:07:12,975 INFO L443 ceAbstractionStarter]: For program point L55-1(line 55) no Hoare annotation was computed. [2019-10-13 21:07:12,975 INFO L443 ceAbstractionStarter]: For program point L39-2(lines 39 51) no Hoare annotation was computed. [2019-10-13 21:07:12,975 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2019-10-13 21:07:12,975 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2019-10-13 21:07:12,975 INFO L443 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2019-10-13 21:07:12,975 INFO L443 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2019-10-13 21:07:12,976 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-10-13 21:07:12,976 INFO L443 ceAbstractionStarter]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2019-10-13 21:07:12,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 09:07:12 BoogieIcfgContainer [2019-10-13 21:07:12,985 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 21:07:12,988 INFO L168 Benchmark]: Toolchain (without parser) took 2033.28 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 103.9 MB in the beginning and 96.9 MB in the end (delta: 7.0 MB). Peak memory consumption was 64.1 MB. Max. memory is 7.1 GB. [2019-10-13 21:07:12,989 INFO L168 Benchmark]: CDTParser took 0.26 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: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 21:07:12,990 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.82 ms. Allocated memory is still 145.8 MB. Free memory was 103.4 MB in the beginning and 93.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2019-10-13 21:07:12,991 INFO L168 Benchmark]: Boogie Preprocessor took 135.52 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 93.0 MB in the beginning and 180.5 MB in the end (delta: -87.5 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-10-13 21:07:12,992 INFO L168 Benchmark]: RCFGBuilder took 365.98 ms. Allocated memory is still 202.9 MB. Free memory was 180.5 MB in the beginning and 162.0 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. [2019-10-13 21:07:12,992 INFO L168 Benchmark]: TraceAbstraction took 1239.31 ms. Allocated memory is still 202.9 MB. Free memory was 162.0 MB in the beginning and 96.9 MB in the end (delta: 65.1 MB). Peak memory consumption was 65.1 MB. Max. memory is 7.1 GB. [2019-10-13 21:07:12,997 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 287.82 ms. Allocated memory is still 145.8 MB. Free memory was 103.4 MB in the beginning and 93.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.52 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 93.0 MB in the beginning and 180.5 MB in the end (delta: -87.5 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 365.98 ms. Allocated memory is still 202.9 MB. Free memory was 180.5 MB in the beginning and 162.0 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1239.31 ms. Allocated memory is still 202.9 MB. Free memory was 162.0 MB in the beginning and 96.9 MB in the end (delta: 65.1 MB). Peak memory consumption was 65.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 35 locations, 1 error locations. Result: SAFE, OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 73 SDtfs, 5 SDslu, 20 SDs, 0 SdLazy, 18 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 13 PreInvPairs, 13 NumberOfFragments, 11 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 3689 SizeOfPredicates, 1 NumberOfNonLiveVariables, 98 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 3/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 100, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9166666666666666, AVG_VARS_REMOVED_DURING_WEAKENING: 0.9259259259259259, AVG_WEAKENED_CONJUNCTS: 0.2222222222222222, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...