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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/ldv-regression/test24-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 02:56:20,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 02:56:20,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 02:56:20,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 02:56:20,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 02:56:20,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 02:56:20,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 02:56:20,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 02:56:20,186 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 02:56:20,187 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 02:56:20,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 02:56:20,191 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 02:56:20,191 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 02:56:20,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 02:56:20,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 02:56:20,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 02:56:20,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 02:56:20,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 02:56:20,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 02:56:20,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 02:56:20,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 02:56:20,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 02:56:20,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 02:56:20,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 02:56:20,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 02:56:20,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 02:56:20,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 02:56:20,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 02:56:20,219 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 [2019-10-15 02:56:20,244 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 02:56:20,244 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 02:56:20,248 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 02:56:20,249 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 02:56:20,249 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 02:56:20,249 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 02:56:20,249 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 02:56:20,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 02:56:20,250 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 02:56:20,250 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 02:56:20,251 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 02:56:20,251 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 02:56:20,251 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 02:56:20,252 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 02:56:20,252 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 02:56:20,252 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 02:56:20,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 02:56:20,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 02:56:20,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 02:56:20,253 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 02:56:20,254 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 02:56:20,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 02:56:20,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 02:56:20,255 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 02:56:20,255 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 02:56:20,255 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 02:56:20,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 02:56:20,256 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 02:56:20,256 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 02:56:20,575 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 02:56:20,588 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 02:56:20,592 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 02:56:20,593 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 02:56:20,594 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 02:56:20,595 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test24-1.c [2019-10-15 02:56:20,664 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f256e6368/d1aa43dd5f9c4be980785bbc4594d433/FLAG34f1cb783 [2019-10-15 02:56:21,159 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 02:56:21,162 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test24-1.c [2019-10-15 02:56:21,168 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f256e6368/d1aa43dd5f9c4be980785bbc4594d433/FLAG34f1cb783 [2019-10-15 02:56:21,534 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f256e6368/d1aa43dd5f9c4be980785bbc4594d433 [2019-10-15 02:56:21,544 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 02:56:21,545 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 02:56:21,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 02:56:21,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 02:56:21,550 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 02:56:21,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:56:21" (1/1) ... [2019-10-15 02:56:21,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68389927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:21, skipping insertion in model container [2019-10-15 02:56:21,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:56:21" (1/1) ... [2019-10-15 02:56:21,561 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 02:56:21,581 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 02:56:21,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:56:21,766 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 02:56:21,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:56:21,880 INFO L192 MainTranslator]: Completed translation [2019-10-15 02:56:21,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:21 WrapperNode [2019-10-15 02:56:21,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 02:56:21,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 02:56:21,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 02:56:21,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 02:56:21,894 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:21" (1/1) ... [2019-10-15 02:56:21,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:21" (1/1) ... [2019-10-15 02:56:21,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:21" (1/1) ... [2019-10-15 02:56:21,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:21" (1/1) ... [2019-10-15 02:56:21,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:21" (1/1) ... [2019-10-15 02:56:21,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:21" (1/1) ... [2019-10-15 02:56:21,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:21" (1/1) ... [2019-10-15 02:56:21,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 02:56:21,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 02:56:21,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 02:56:21,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 02:56:21,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:21" (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 [2019-10-15 02:56:21,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 02:56:21,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 02:56:21,980 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2019-10-15 02:56:21,981 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 02:56:21,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 02:56:21,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 02:56:21,981 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-15 02:56:21,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 02:56:21,981 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 02:56:21,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 02:56:21,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 02:56:21,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 02:56:21,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 02:56:21,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 02:56:22,257 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 02:56:22,258 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 02:56:22,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:56:22 BoogieIcfgContainer [2019-10-15 02:56:22,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 02:56:22,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 02:56:22,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 02:56:22,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 02:56:22,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:56:21" (1/3) ... [2019-10-15 02:56:22,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272b857d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:56:22, skipping insertion in model container [2019-10-15 02:56:22,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:21" (2/3) ... [2019-10-15 02:56:22,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272b857d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:56:22, skipping insertion in model container [2019-10-15 02:56:22,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:56:22" (3/3) ... [2019-10-15 02:56:22,286 INFO L109 eAbstractionObserver]: Analyzing ICFG test24-1.c [2019-10-15 02:56:22,311 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 02:56:22,318 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 02:56:22,334 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 02:56:22,358 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 02:56:22,358 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 02:56:22,358 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 02:56:22,358 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 02:56:22,358 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 02:56:22,358 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 02:56:22,358 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 02:56:22,359 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 02:56:22,373 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-10-15 02:56:22,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-15 02:56:22,379 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:56:22,380 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:56:22,381 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:56:22,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:56:22,386 INFO L82 PathProgramCache]: Analyzing trace with hash 241395613, now seen corresponding path program 1 times [2019-10-15 02:56:22,394 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:56:22,395 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611957408] [2019-10-15 02:56:22,395 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:22,395 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:22,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:56:22,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:56:22,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:56:22,534 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611957408] [2019-10-15 02:56:22,535 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:56:22,535 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 02:56:22,535 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276662708] [2019-10-15 02:56:22,540 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 02:56:22,541 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:56:22,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 02:56:22,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 02:56:22,558 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-10-15 02:56:22,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:56:22,577 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2019-10-15 02:56:22,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 02:56:22,579 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-10-15 02:56:22,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:56:22,589 INFO L225 Difference]: With dead ends: 32 [2019-10-15 02:56:22,589 INFO L226 Difference]: Without dead ends: 15 [2019-10-15 02:56:22,593 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 [2019-10-15 02:56:22,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-10-15 02:56:22,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-10-15 02:56:22,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-15 02:56:22,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-10-15 02:56:22,634 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2019-10-15 02:56:22,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:56:22,635 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-10-15 02:56:22,635 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 02:56:22,635 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-10-15 02:56:22,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-15 02:56:22,636 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:56:22,636 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:56:22,637 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:56:22,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:56:22,637 INFO L82 PathProgramCache]: Analyzing trace with hash -2077442300, now seen corresponding path program 1 times [2019-10-15 02:56:22,638 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:56:22,638 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482395605] [2019-10-15 02:56:22,638 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:22,639 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:22,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:56:22,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:56:22,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:56:22,843 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482395605] [2019-10-15 02:56:22,843 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:56:22,843 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 02:56:22,844 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35263261] [2019-10-15 02:56:22,847 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 02:56:22,847 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:56:22,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 02:56:22,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 02:56:22,848 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2019-10-15 02:56:22,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:56:22,927 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2019-10-15 02:56:22,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 02:56:22,928 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-10-15 02:56:22,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:56:22,929 INFO L225 Difference]: With dead ends: 24 [2019-10-15 02:56:22,929 INFO L226 Difference]: Without dead ends: 17 [2019-10-15 02:56:22,930 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 02:56:22,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-10-15 02:56:22,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-10-15 02:56:22,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-15 02:56:22,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-10-15 02:56:22,942 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2019-10-15 02:56:22,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:56:22,942 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-10-15 02:56:22,942 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 02:56:22,943 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-10-15 02:56:22,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-15 02:56:22,944 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:56:22,944 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:56:22,945 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:56:22,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:56:22,946 INFO L82 PathProgramCache]: Analyzing trace with hash -968095575, now seen corresponding path program 1 times [2019-10-15 02:56:22,947 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:56:22,948 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934009180] [2019-10-15 02:56:22,949 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:22,949 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:22,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:56:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:56:23,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:56:23,390 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934009180] [2019-10-15 02:56:23,390 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527552409] [2019-10-15 02:56:23,391 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 [2019-10-15 02:56:23,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:56:23,456 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-15 02:56:23,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:56:23,547 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2019-10-15 02:56:23,548 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 02:56:23,559 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:56:23,561 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-15 02:56:23,562 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:53, output treesize:49 [2019-10-15 02:56:23,776 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-15 02:56:23,780 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:56:23,792 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 20 [2019-10-15 02:56:23,794 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 02:56:23,811 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:56:23,812 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-10-15 02:56:23,813 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:56, output treesize:28 [2019-10-15 02:56:23,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:56:23,871 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:56:23,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:56:23,991 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1810269963] [2019-10-15 02:56:24,033 INFO L162 IcfgInterpreter]: Started Sifa with 15 locations of interest [2019-10-15 02:56:24,033 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 02:56:24,040 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 02:56:24,049 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 02:56:24,050 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 02:56:24,153 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-15 02:56:24,883 INFO L199 IcfgInterpreter]: Interpreting procedure check with input of size 14 for LOIs [2019-10-15 02:56:24,897 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-15 02:56:24,903 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 02:56:26,002 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 31 [2019-10-15 02:56:26,027 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-15 02:56:26,027 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5, 11] total 27 [2019-10-15 02:56:26,028 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831182753] [2019-10-15 02:56:26,029 INFO L442 AbstractCegarLoop]: Interpolant automaton has 27 states [2019-10-15 02:56:26,030 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:56:26,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2019-10-15 02:56:26,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2019-10-15 02:56:26,032 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 27 states. [2019-10-15 02:56:26,290 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2019-10-15 02:56:26,595 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2019-10-15 02:56:26,762 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2019-10-15 02:56:29,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:56:29,203 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2019-10-15 02:56:29,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-15 02:56:29,203 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 16 [2019-10-15 02:56:29,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:56:29,204 INFO L225 Difference]: With dead ends: 28 [2019-10-15 02:56:29,204 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 02:56:29,206 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=270, Invalid=1451, Unknown=1, NotChecked=0, Total=1722 [2019-10-15 02:56:29,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 02:56:29,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 02:56:29,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 02:56:29,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 02:56:29,208 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-10-15 02:56:29,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:56:29,208 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 02:56:29,208 INFO L463 AbstractCegarLoop]: Interpolant automaton has 27 states. [2019-10-15 02:56:29,208 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 02:56:29,209 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 02:56:29,412 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:56:29,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 02:56:29,678 INFO L439 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-15 02:56:29,678 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 02:56:29,678 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 02:56:29,678 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (<= 0 |#NULL.offset|)) [2019-10-15 02:56:29,679 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 02:56:29,679 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 02:56:29,679 INFO L443 ceAbstractionStarter]: For program point L29(line 29) no Hoare annotation was computed. [2019-10-15 02:56:29,679 INFO L443 ceAbstractionStarter]: For program point L29-1(lines 29 31) no Hoare annotation was computed. [2019-10-15 02:56:29,679 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 14 38) no Hoare annotation was computed. [2019-10-15 02:56:29,679 INFO L443 ceAbstractionStarter]: For program point L21(lines 21 32) no Hoare annotation was computed. [2019-10-15 02:56:29,679 INFO L443 ceAbstractionStarter]: For program point L21-2(lines 21 32) no Hoare annotation was computed. [2019-10-15 02:56:29,679 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 14 38) no Hoare annotation was computed. [2019-10-15 02:56:29,680 INFO L439 ceAbstractionStarter]: At program point L30(lines 15 38) the Hoare annotation is: (or (not (<= |#NULL.offset| 0)) (not (<= 0 |#NULL.base|)) (not (= 0 (select |old(#valid)| 0))) (not (<= 0 |#NULL.offset|)) (not (<= |#NULL.base| 0))) [2019-10-15 02:56:29,680 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 14 38) the Hoare annotation is: (or (not (<= |#NULL.offset| 0)) (not (<= 0 |#NULL.base|)) (and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |old(#length)| |#length|)) (not (= 0 (select |old(#valid)| 0))) (not (<= 0 |#NULL.offset|)) (not (<= |#NULL.base| 0))) [2019-10-15 02:56:29,680 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 36) no Hoare annotation was computed. [2019-10-15 02:56:29,680 INFO L443 ceAbstractionStarter]: For program point L26-1(lines 26 28) no Hoare annotation was computed. [2019-10-15 02:56:29,680 INFO L439 ceAbstractionStarter]: At program point L26-3(lines 26 28) the Hoare annotation is: (or (not (<= |#NULL.offset| 0)) (not (<= 0 |#NULL.base|)) (not (= 0 (select |old(#valid)| 0))) (not (<= 0 |#NULL.offset|)) (not (<= |#NULL.base| 0)) (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* .cse0 8) |main_~#ad1~0.offset|)) .cse0) (<= 0 main_~ad2~0.offset) (<= (* 8 main_~i~0) (* 8 .cse0)) (= 0 (select |#valid| 0)) (<= main_~ad2~0.offset 0) (<= |main_~#ad1~0.offset| 0) (<= 0 |main_~#ad1~0.offset|)))) [2019-10-15 02:56:29,681 INFO L439 ceAbstractionStarter]: At program point L26-4(lines 26 28) the Hoare annotation is: (or (let ((.cse1 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset)) (.cse0 (select |#memory_int| |main_~#ad1~0.base|))) (and (= (select .cse0 (+ (* .cse1 8) |main_~#ad1~0.offset|)) .cse1) (<= 0 main_~ad2~0.offset) (= |main_~#ad1~0.offset| 0) (<= (* 8 main_~i~0) (* 8 .cse1)) (= 0 (select |#valid| 0)) (<= main_~ad2~0.offset 0) (= (select .cse0 (+ (* main_~i~0 8) |main_~#ad1~0.offset|)) main_~i~0))) (not (<= |#NULL.offset| 0)) (not (<= 0 |#NULL.base|)) (not (= 0 (select |old(#valid)| 0))) (not (<= 0 |#NULL.offset|)) (not (<= |#NULL.base| 0))) [2019-10-15 02:56:29,681 INFO L446 ceAbstractionStarter]: At program point checkENTRY(lines 9 12) the Hoare annotation is: true [2019-10-15 02:56:29,681 INFO L443 ceAbstractionStarter]: For program point checkEXIT(lines 9 12) no Hoare annotation was computed. [2019-10-15 02:56:29,689 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-15 02:56:29,690 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-15 02:56:29,691 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-15 02:56:29,691 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-15 02:56:29,691 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-15 02:56:29,692 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-15 02:56:29,692 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-15 02:56:29,692 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-15 02:56:29,698 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-15 02:56:29,699 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-15 02:56:29,699 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-15 02:56:29,699 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-15 02:56:29,699 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-15 02:56:29,700 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-15 02:56:29,700 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-15 02:56:29,700 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-15 02:56:29,701 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-15 02:56:29,702 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-15 02:56:29,702 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-15 02:56:29,702 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-15 02:56:29,702 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-15 02:56:29,703 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-15 02:56:29,703 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-15 02:56:29,703 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-15 02:56:29,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 02:56:29 BoogieIcfgContainer [2019-10-15 02:56:29,708 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 02:56:29,710 INFO L168 Benchmark]: Toolchain (without parser) took 8164.27 ms. Allocated memory was 138.4 MB in the beginning and 274.7 MB in the end (delta: 136.3 MB). Free memory was 103.5 MB in the beginning and 119.6 MB in the end (delta: -16.1 MB). Peak memory consumption was 120.2 MB. Max. memory is 7.1 GB. [2019-10-15 02:56:29,711 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-15 02:56:29,712 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.00 ms. Allocated memory was 138.4 MB in the beginning and 199.8 MB in the end (delta: 61.3 MB). Free memory was 103.3 MB in the beginning and 178.5 MB in the end (delta: -75.2 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2019-10-15 02:56:29,712 INFO L168 Benchmark]: Boogie Preprocessor took 37.74 ms. Allocated memory is still 199.8 MB. Free memory was 178.5 MB in the beginning and 176.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-10-15 02:56:29,713 INFO L168 Benchmark]: RCFGBuilder took 340.06 ms. Allocated memory is still 199.8 MB. Free memory was 176.8 MB in the beginning and 162.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2019-10-15 02:56:29,714 INFO L168 Benchmark]: TraceAbstraction took 7438.69 ms. Allocated memory was 199.8 MB in the beginning and 274.7 MB in the end (delta: 75.0 MB). Free memory was 161.4 MB in the beginning and 119.6 MB in the end (delta: 41.8 MB). Peak memory consumption was 116.8 MB. Max. memory is 7.1 GB. [2019-10-15 02:56:29,717 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 335.00 ms. Allocated memory was 138.4 MB in the beginning and 199.8 MB in the end (delta: 61.3 MB). Free memory was 103.3 MB in the beginning and 178.5 MB in the end (delta: -75.2 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 37.74 ms. Allocated memory is still 199.8 MB. Free memory was 178.5 MB in the beginning and 176.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 340.06 ms. Allocated memory is still 199.8 MB. Free memory was 176.8 MB in the beginning and 162.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7438.69 ms. Allocated memory was 199.8 MB in the beginning and 274.7 MB in the end (delta: 75.0 MB). Free memory was 161.4 MB in the beginning and 119.6 MB in the end (delta: 41.8 MB). Peak memory consumption was 116.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 36]: 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: 26]: Loop Invariant [2019-10-15 02:56:29,726 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-15 02:56:29,727 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-15 02:56:29,727 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-15 02:56:29,727 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-15 02:56:29,727 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-15 02:56:29,727 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-15 02:56:29,728 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-15 02:56:29,728 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-15 02:56:29,729 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-15 02:56:29,729 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-15 02:56:29,729 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-15 02:56:29,729 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-15 02:56:29,730 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-15 02:56:29,730 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-15 02:56:29,730 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-15 02:56:29,730 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((((!(#NULL <= 0) || !(0 <= #NULL)) || !(0 == \old(\valid)[0])) || !(0 <= #NULL)) || !(#NULL <= 0)) || ((((((unknown-#memory_int-unknown[ad1][unknown-#memory_int-unknown[pa][pa] * 8 + ad1] == unknown-#memory_int-unknown[pa][pa] && 0 <= ad2) && 8 * i <= 8 * unknown-#memory_int-unknown[pa][pa]) && 0 == \valid[0]) && ad2 <= 0) && ad1 <= 0) && 0 <= ad1) - InvariantResult [Line: 15]: Loop Invariant [2019-10-15 02:56:29,731 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-15 02:56:29,731 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-15 02:56:29,731 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-15 02:56:29,731 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-15 02:56:29,732 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-15 02:56:29,732 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-15 02:56:29,732 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-10-15 02:56:29,732 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL Derived loop invariant: (((!(#NULL <= 0) || !(0 <= #NULL)) || !(0 == \old(\valid)[0])) || !(0 <= #NULL)) || !(#NULL <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Result: SAFE, OverallTime: 7.3s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 38 SDtfs, 33 SDslu, 47 SDs, 0 SdLazy, 166 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 11 PreInvPairs, 16 NumberOfFragments, 236 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 430 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 70 ConstructedInterpolants, 4 QuantifiedInterpolants, 6289 SizeOfPredicates, 12 NumberOfNonLiveVariables, 82 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 871, ICFG_INTERPRETER_ENTERED_PROCEDURES: 4, DAG_INTERPRETER_EARLY_EXIT_QUERIES: 35, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 21, TOOLS_POST_TIME[ms]: 43, TOOLS_POST_CALL_APPLICATIONS: 7, TOOLS_POST_CALL_TIME[ms]: 14, TOOLS_POST_RETURN_APPLICATIONS: 4, TOOLS_POST_RETURN_TIME[ms]: 14, TOOLS_QUANTIFIERELIM_APPLICATIONS: 32, TOOLS_QUANTIFIERELIM_TIME[ms]: 51, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 9, FLUID_QUERY_TIME[ms]: 6, FLUID_QUERIES: 38, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 31, DOMAIN_JOIN_TIME[ms]: 584, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 122, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME[ms]: 12, DOMAIN_ISBOTTOM_APPLICATIONS: 5, DOMAIN_ISBOTTOM_TIME[ms]: 6, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 260, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 260, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 4, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME[ms]: 30, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 30, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 4, PATH_EXPR_TIME[ms]: 4, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 14, DAG_COMPRESSION_PROCESSED_NODES: 110, DAG_COMPRESSION_RETAINED_NODES: 55, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...