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-programs/copysome2-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:52:44,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:52:44,153 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:52:44,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:52:44,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:52:44,175 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:52:44,177 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:52:44,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:52:44,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:52:44,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:52:44,196 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:52:44,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:52:44,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:52:44,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:52:44,202 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:52:44,203 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:52:44,205 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:52:44,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:52:44,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:52:44,212 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:52:44,217 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:52:44,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:52:44,228 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:52:44,229 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:52:44,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:52:44,237 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:52:44,237 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:52:44,238 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:52:44,239 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:52:44,240 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:52:44,241 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:52:44,241 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:52:44,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:52:44,242 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:52:44,244 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:52:44,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:52:44,246 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:52:44,262 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:52:44,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:52:44,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:52:44,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:52:44,264 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:52:44,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:52:44,265 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:52:44,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:52:44,265 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:52:44,265 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:52:44,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:52:44,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:52:44,266 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:52:44,266 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:52:44,266 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:52:44,267 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:52:44,267 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:52:44,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:52:44,267 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:52:44,267 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:52:44,268 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:52:44,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:52:44,268 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:52:44,268 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:52:44,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:52:44,269 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:52:44,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:52:44,269 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:52:44,269 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-14 23:52:44,552 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:52:44,570 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:52:44,574 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:52:44,575 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:52:44,575 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:52:44,576 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-programs/copysome2-1.i [2019-10-14 23:52:44,643 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1e8c6ec4/8f59917135464eed9e0e6202575700cb/FLAG6627e22ac [2019-10-14 23:52:45,099 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:52:45,099 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-programs/copysome2-1.i [2019-10-14 23:52:45,106 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1e8c6ec4/8f59917135464eed9e0e6202575700cb/FLAG6627e22ac [2019-10-14 23:52:45,485 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1e8c6ec4/8f59917135464eed9e0e6202575700cb [2019-10-14 23:52:45,497 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:52:45,500 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:52:45,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:52:45,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:52:45,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:52:45,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:52:45" (1/1) ... [2019-10-14 23:52:45,514 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3058475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:45, skipping insertion in model container [2019-10-14 23:52:45,514 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:52:45" (1/1) ... [2019-10-14 23:52:45,523 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:52:45,546 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:52:45,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:52:45,760 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:52:45,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:52:45,810 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:52:45,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:45 WrapperNode [2019-10-14 23:52:45,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:52:45,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:52:45,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:52:45,812 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:52:45,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:45" (1/1) ... [2019-10-14 23:52:45,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:45" (1/1) ... [2019-10-14 23:52:45,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:45" (1/1) ... [2019-10-14 23:52:45,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:45" (1/1) ... [2019-10-14 23:52:45,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:45" (1/1) ... [2019-10-14 23:52:45,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:45" (1/1) ... [2019-10-14 23:52:45,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:45" (1/1) ... [2019-10-14 23:52:45,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:52:45,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:52:45,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:52:45,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:52:45,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:52:46,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:52:46,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:52:46,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-14 23:52:46,014 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:52:46,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:52:46,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:52:46,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:52:46,015 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:52:46,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:52:46,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:52:46,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:52:46,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:52:46,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:52:46,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:52:46,310 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:52:46,310 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-14 23:52:46,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:52:46 BoogieIcfgContainer [2019-10-14 23:52:46,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:52:46,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:52:46,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:52:46,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:52:46,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:52:45" (1/3) ... [2019-10-14 23:52:46,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fdb4ab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:52:46, skipping insertion in model container [2019-10-14 23:52:46,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:45" (2/3) ... [2019-10-14 23:52:46,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fdb4ab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:52:46, skipping insertion in model container [2019-10-14 23:52:46,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:52:46" (3/3) ... [2019-10-14 23:52:46,320 INFO L109 eAbstractionObserver]: Analyzing ICFG copysome2-1.i [2019-10-14 23:52:46,330 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:52:46,340 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:52:46,352 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:52:46,382 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:52:46,383 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:52:46,383 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:52:46,383 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:52:46,383 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:52:46,383 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:52:46,384 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:52:46,384 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:52:46,398 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-10-14 23:52:46,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-14 23:52:46,403 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:46,404 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:46,406 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:46,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:46,412 INFO L82 PathProgramCache]: Analyzing trace with hash 696803616, now seen corresponding path program 1 times [2019-10-14 23:52:46,420 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:46,420 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684201000] [2019-10-14 23:52:46,420 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:46,421 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:46,421 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:46,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:52:46,560 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684201000] [2019-10-14 23:52:46,561 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:46,561 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-14 23:52:46,562 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690739959] [2019-10-14 23:52:46,566 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:52:46,568 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:46,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:52:46,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:46,586 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-10-14 23:52:46,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:46,613 INFO L93 Difference]: Finished difference Result 56 states and 75 transitions. [2019-10-14 23:52:46,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:52:46,614 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-10-14 23:52:46,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:46,623 INFO L225 Difference]: With dead ends: 56 [2019-10-14 23:52:46,623 INFO L226 Difference]: Without dead ends: 27 [2019-10-14 23:52:46,627 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:46,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-10-14 23:52:46,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-10-14 23:52:46,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-14 23:52:46,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2019-10-14 23:52:46,669 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 17 [2019-10-14 23:52:46,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:46,669 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2019-10-14 23:52:46,669 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:52:46,670 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2019-10-14 23:52:46,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-14 23:52:46,671 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:46,671 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:46,671 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:46,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:46,672 INFO L82 PathProgramCache]: Analyzing trace with hash 123133892, now seen corresponding path program 1 times [2019-10-14 23:52:46,672 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:46,673 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820752142] [2019-10-14 23:52:46,673 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:46,673 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:46,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:46,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:52:46,762 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820752142] [2019-10-14 23:52:46,763 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:46,763 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:52:46,767 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344544635] [2019-10-14 23:52:46,771 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:52:46,771 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:46,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:52:46,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:52:46,773 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand 3 states. [2019-10-14 23:52:46,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:46,908 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2019-10-14 23:52:46,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:52:46,909 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-10-14 23:52:46,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:46,911 INFO L225 Difference]: With dead ends: 54 [2019-10-14 23:52:46,911 INFO L226 Difference]: Without dead ends: 35 [2019-10-14 23:52:46,913 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:52:46,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-14 23:52:46,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2019-10-14 23:52:46,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-14 23:52:46,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-10-14 23:52:46,929 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 17 [2019-10-14 23:52:46,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:46,930 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-10-14 23:52:46,930 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:52:46,932 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-10-14 23:52:46,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-14 23:52:46,935 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:46,936 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] [2019-10-14 23:52:46,936 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:46,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:46,938 INFO L82 PathProgramCache]: Analyzing trace with hash -204061721, now seen corresponding path program 1 times [2019-10-14 23:52:46,938 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:46,939 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85443109] [2019-10-14 23:52:46,940 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:46,940 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:46,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:46,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:47,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-14 23:52:47,057 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85443109] [2019-10-14 23:52:47,058 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882472806] [2019-10-14 23:52:47,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:52:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:47,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:52:47,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:52:47,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-14 23:52:47,187 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:52:47,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-14 23:52:47,225 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1650295399] [2019-10-14 23:52:47,231 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 26 [2019-10-14 23:52:47,276 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-14 23:52:47,276 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-14 23:52:47,339 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-14 23:52:47,341 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 30 variables. [2019-10-14 23:52:47,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:47,345 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-14 23:52:47,384 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-14 23:52:47,385 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-14 23:52:47,387 INFO L553 sIntCurrentIteration]: We unified 24 AI predicates to 24 [2019-10-14 23:52:47,387 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-14 23:52:47,388 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-14 23:52:47,388 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 4, 4] total 9 [2019-10-14 23:52:47,389 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72555908] [2019-10-14 23:52:47,391 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:52:47,392 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:47,392 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-14 23:52:47,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:52:47,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:47,393 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 2 states. [2019-10-14 23:52:47,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:47,397 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2019-10-14 23:52:47,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:52:47,397 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2019-10-14 23:52:47,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:47,397 INFO L225 Difference]: With dead ends: 30 [2019-10-14 23:52:47,398 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:52:47,398 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:47,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:52:47,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:52:47,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:52:47,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:52:47,400 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2019-10-14 23:52:47,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:47,400 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:52:47,400 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:52:47,400 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:52:47,401 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:52:47,606 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:52:47,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:52:47,656 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:52:47,657 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:52:47,657 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:52:47,657 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:52:47,657 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-14 23:52:47,657 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:52:47,658 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:52:47,658 INFO L443 ceAbstractionStarter]: For program point L27-2(lines 27 29) no Hoare annotation was computed. [2019-10-14 23:52:47,658 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 4 31) no Hoare annotation was computed. [2019-10-14 23:52:47,659 INFO L439 ceAbstractionStarter]: At program point L27-3(lines 27 29) the Hoare annotation is: false [2019-10-14 23:52:47,659 INFO L443 ceAbstractionStarter]: For program point L27-4(lines 27 29) no Hoare annotation was computed. [2019-10-14 23:52:47,659 INFO L443 ceAbstractionStarter]: For program point L11-2(lines 11 15) no Hoare annotation was computed. [2019-10-14 23:52:47,659 INFO L439 ceAbstractionStarter]: At program point L11-3(lines 11 15) the Hoare annotation is: false [2019-10-14 23:52:47,660 INFO L443 ceAbstractionStarter]: For program point L11-4(lines 11 15) no Hoare annotation was computed. [2019-10-14 23:52:47,660 INFO L439 ceAbstractionStarter]: At program point L28(line 28) the Hoare annotation is: false [2019-10-14 23:52:47,660 INFO L443 ceAbstractionStarter]: For program point L28-1(line 28) no Hoare annotation was computed. [2019-10-14 23:52:47,660 INFO L443 ceAbstractionStarter]: For program point L20-2(lines 20 25) no Hoare annotation was computed. [2019-10-14 23:52:47,660 INFO L439 ceAbstractionStarter]: At program point L20-3(lines 20 25) the Hoare annotation is: false [2019-10-14 23:52:47,660 INFO L443 ceAbstractionStarter]: For program point L20-4(lines 20 25) no Hoare annotation was computed. [2019-10-14 23:52:47,661 INFO L443 ceAbstractionStarter]: For program point L16-2(lines 16 19) no Hoare annotation was computed. [2019-10-14 23:52:47,661 INFO L439 ceAbstractionStarter]: At program point L16-3(lines 16 19) the Hoare annotation is: false [2019-10-14 23:52:47,661 INFO L443 ceAbstractionStarter]: For program point L16-4(lines 16 19) no Hoare annotation was computed. [2019-10-14 23:52:47,662 INFO L443 ceAbstractionStarter]: For program point L21(lines 21 24) no Hoare annotation was computed. [2019-10-14 23:52:47,662 INFO L443 ceAbstractionStarter]: For program point L17(lines 17 18) no Hoare annotation was computed. [2019-10-14 23:52:47,662 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 4 31) no Hoare annotation was computed. [2019-10-14 23:52:47,662 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 4 31) the Hoare annotation is: true [2019-10-14 23:52:47,663 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-10-14 23:52:47,664 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-10-14 23:52:47,664 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-10-14 23:52:47,666 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-10-14 23:52:47,666 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-10-14 23:52:47,666 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-10-14 23:52:47,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:52:47 BoogieIcfgContainer [2019-10-14 23:52:47,678 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:52:47,682 INFO L168 Benchmark]: Toolchain (without parser) took 2180.94 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 102.3 MB in the beginning and 95.8 MB in the end (delta: 6.5 MB). Peak memory consumption was 70.0 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:47,685 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-10-14 23:52:47,687 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.48 ms. Allocated memory is still 138.9 MB. Free memory was 101.9 MB in the beginning and 91.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:47,688 INFO L168 Benchmark]: Boogie Preprocessor took 136.33 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 91.8 MB in the beginning and 179.8 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:47,690 INFO L168 Benchmark]: RCFGBuilder took 363.99 ms. Allocated memory is still 202.4 MB. Free memory was 179.8 MB in the beginning and 162.8 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:47,695 INFO L168 Benchmark]: TraceAbstraction took 1365.20 ms. Allocated memory is still 202.4 MB. Free memory was 162.8 MB in the beginning and 95.8 MB in the end (delta: 67.0 MB). Peak memory consumption was 67.0 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:47,706 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 305.48 ms. Allocated memory is still 138.9 MB. Free memory was 101.9 MB in the beginning and 91.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 136.33 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 91.8 MB in the beginning and 179.8 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 363.99 ms. Allocated memory is still 202.4 MB. Free memory was 179.8 MB in the beginning and 162.8 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1365.20 ms. Allocated memory is still 202.4 MB. Free memory was 162.8 MB in the beginning and 95.8 MB in the end (delta: 67.0 MB). Peak memory consumption was 67.0 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: 20]: 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: 27]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 32 locations, 1 error locations. Result: SAFE, OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 64 SDtfs, 7 SDslu, 16 SDs, 0 SdLazy, 23 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 12 PreInvPairs, 12 NumberOfFragments, 10 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 2944 SizeOfPredicates, 1 NumberOfNonLiveVariables, 94 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 6/9 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 115, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9166666666666666, AVG_VARS_REMOVED_DURING_WEAKENING: 0.875, AVG_WEAKENED_CONJUNCTS: 0.25, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...