/usr/bin/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/loop-invgen/nested9.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:01:26,300 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:01:26,303 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:01:26,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:01:26,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:01:26,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:01:26,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:01:26,338 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:01:26,342 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:01:26,343 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:01:26,344 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:01:26,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:01:26,346 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:01:26,347 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:01:26,348 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:01:26,349 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:01:26,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:01:26,351 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:01:26,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:01:26,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:01:26,356 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:01:26,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:01:26,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:01:26,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:01:26,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:01:26,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:01:26,361 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:01:26,363 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:01:26,363 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:01:26,364 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:01:26,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:01:26,365 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:01:26,366 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:01:26,367 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:01:26,368 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:01:26,368 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:01:26,369 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:01:26,369 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:01:26,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:01:26,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:01:26,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:01:26,371 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 [2019-11-07 04:01:26,385 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:01:26,386 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:01:26,387 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:01:26,387 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:01:26,387 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:01:26,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:01:26,388 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:01:26,388 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:01:26,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:01:26,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:01:26,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:01:26,389 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:01:26,389 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:01:26,389 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:01:26,389 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:01:26,390 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:01:26,390 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:01:26,390 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:01:26,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:01:26,390 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:01:26,391 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:01:26,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:01:26,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:01:26,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:01:26,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:01:26,392 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:01:26,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:01:26,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:01:26,392 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 [2019-11-07 04:01:26,675 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:01:26,693 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:01:26,697 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:01:26,699 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:01:26,699 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:01:26,700 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested9.i [2019-11-07 04:01:26,767 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f2cb7c28/4c3a9ce207e1445998461c9c8a1f66a3/FLAG8eaaa2f56 [2019-11-07 04:01:27,275 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:01:27,277 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nested9.i [2019-11-07 04:01:27,284 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f2cb7c28/4c3a9ce207e1445998461c9c8a1f66a3/FLAG8eaaa2f56 [2019-11-07 04:01:27,628 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f2cb7c28/4c3a9ce207e1445998461c9c8a1f66a3 [2019-11-07 04:01:27,636 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:01:27,638 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:01:27,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:01:27,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:01:27,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:01:27,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:01:27" (1/1) ... [2019-11-07 04:01:27,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e06e217 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:27, skipping insertion in model container [2019-11-07 04:01:27,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:01:27" (1/1) ... [2019-11-07 04:01:27,655 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:01:27,673 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:01:27,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:01:27,853 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:01:27,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:01:27,889 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:01:27,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:27 WrapperNode [2019-11-07 04:01:27,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:01:27,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:01:27,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:01:27,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:01:27,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:27" (1/1) ... [2019-11-07 04:01:27,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:27" (1/1) ... [2019-11-07 04:01:28,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:27" (1/1) ... [2019-11-07 04:01:28,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:27" (1/1) ... [2019-11-07 04:01:28,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:27" (1/1) ... [2019-11-07 04:01:28,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:27" (1/1) ... [2019-11-07 04:01:28,027 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:27" (1/1) ... [2019-11-07 04:01:28,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:01:28,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:01:28,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:01:28,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:01:28,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:27" (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 [2019-11-07 04:01:28,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:01:28,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:01:28,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-07 04:01:28,093 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:01:28,093 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:01:28,093 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 04:01:28,093 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-07 04:01:28,093 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:01:28,094 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:01:28,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:01:28,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:01:28,417 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:01:28,418 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-07 04:01:28,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:01:28 BoogieIcfgContainer [2019-11-07 04:01:28,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:01:28,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:01:28,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:01:28,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:01:28,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:01:27" (1/3) ... [2019-11-07 04:01:28,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10caec0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:01:28, skipping insertion in model container [2019-11-07 04:01:28,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:27" (2/3) ... [2019-11-07 04:01:28,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10caec0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:01:28, skipping insertion in model container [2019-11-07 04:01:28,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:01:28" (3/3) ... [2019-11-07 04:01:28,427 INFO L109 eAbstractionObserver]: Analyzing ICFG nested9.i [2019-11-07 04:01:28,438 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:01:28,446 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:01:28,458 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:01:28,484 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:01:28,484 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:01:28,484 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:01:28,484 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:01:28,484 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:01:28,485 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:01:28,485 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:01:28,485 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:01:28,502 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-11-07 04:01:28,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-07 04:01:28,507 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:01:28,508 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:01:28,510 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:01:28,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:01:28,515 INFO L82 PathProgramCache]: Analyzing trace with hash -528574952, now seen corresponding path program 1 times [2019-11-07 04:01:28,523 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:01:28,523 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481399094] [2019-11-07 04:01:28,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:01:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:01:28,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:01:28,811 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481399094] [2019-11-07 04:01:28,812 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:01:28,812 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 04:01:28,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175225363] [2019-11-07 04:01:28,818 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 04:01:28,818 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:01:28,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 04:01:28,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:01:28,831 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 8 states. [2019-11-07 04:01:29,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:01:29,086 INFO L93 Difference]: Finished difference Result 53 states and 69 transitions. [2019-11-07 04:01:29,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 04:01:29,088 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2019-11-07 04:01:29,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:01:29,096 INFO L225 Difference]: With dead ends: 53 [2019-11-07 04:01:29,097 INFO L226 Difference]: Without dead ends: 29 [2019-11-07 04:01:29,100 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:01:29,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-07 04:01:29,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-07 04:01:29,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-07 04:01:29,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2019-11-07 04:01:29,144 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 16 [2019-11-07 04:01:29,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:01:29,145 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2019-11-07 04:01:29,145 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 04:01:29,145 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2019-11-07 04:01:29,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-07 04:01:29,146 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:01:29,147 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:01:29,147 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:01:29,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:01:29,148 INFO L82 PathProgramCache]: Analyzing trace with hash -770191902, now seen corresponding path program 1 times [2019-11-07 04:01:29,148 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:01:29,148 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029744857] [2019-11-07 04:01:29,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:01:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:01:29,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:01:29,247 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029744857] [2019-11-07 04:01:29,247 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917273679] [2019-11-07 04:01:29,249 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 [2019-11-07 04:01:29,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:01:29,314 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-07 04:01:29,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:01:29,429 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:01:29,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:01:29,468 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:01:29,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:01:29,571 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:01:29,571 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 17 [2019-11-07 04:01:29,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671740124] [2019-11-07 04:01:29,573 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 04:01:29,574 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:01:29,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 04:01:29,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2019-11-07 04:01:29,576 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 8 states. [2019-11-07 04:01:29,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:01:29,697 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2019-11-07 04:01:29,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 04:01:29,698 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2019-11-07 04:01:29,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:01:29,699 INFO L225 Difference]: With dead ends: 39 [2019-11-07 04:01:29,700 INFO L226 Difference]: Without dead ends: 37 [2019-11-07 04:01:29,701 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2019-11-07 04:01:29,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-07 04:01:29,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2019-11-07 04:01:29,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-07 04:01:29,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2019-11-07 04:01:29,710 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 18 [2019-11-07 04:01:29,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:01:29,710 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2019-11-07 04:01:29,711 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 04:01:29,711 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2019-11-07 04:01:29,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-07 04:01:29,712 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:01:29,712 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:01:29,915 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:01:29,916 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:01:29,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:01:29,916 INFO L82 PathProgramCache]: Analyzing trace with hash -14228257, now seen corresponding path program 1 times [2019-11-07 04:01:29,917 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:01:29,917 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383381805] [2019-11-07 04:01:29,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:01:29,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:01:30,065 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:01:30,066 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383381805] [2019-11-07 04:01:30,066 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272610664] [2019-11-07 04:01:30,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:01:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:01:30,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 04:01:30,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:01:30,238 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:01:30,238 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:01:30,334 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:01:30,335 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [584907329] [2019-11-07 04:01:30,387 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2019-11-07 04:01:30,387 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:01:30,403 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:01:30,415 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:01:30,416 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:01:30,487 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 6 for LOIs [2019-11-07 04:01:31,061 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 11 for LOIs [2019-11-07 04:01:31,066 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 3 for LOIs [2019-11-07 04:01:31,068 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 04:01:31,763 WARN L191 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 25 [2019-11-07 04:01:32,257 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-07 04:01:32,258 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7, 15] total 33 [2019-11-07 04:01:32,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449792494] [2019-11-07 04:01:32,259 INFO L442 AbstractCegarLoop]: Interpolant automaton has 33 states [2019-11-07 04:01:32,260 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:01:32,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2019-11-07 04:01:32,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=936, Unknown=0, NotChecked=0, Total=1056 [2019-11-07 04:01:32,261 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand 33 states. [2019-11-07 04:01:33,520 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 34 [2019-11-07 04:01:34,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:01:34,622 INFO L93 Difference]: Finished difference Result 77 states and 101 transitions. [2019-11-07 04:01:34,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-11-07 04:01:34,623 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 25 [2019-11-07 04:01:34,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:01:34,629 INFO L225 Difference]: With dead ends: 77 [2019-11-07 04:01:34,629 INFO L226 Difference]: Without dead ends: 52 [2019-11-07 04:01:34,631 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=663, Invalid=3119, Unknown=0, NotChecked=0, Total=3782 [2019-11-07 04:01:34,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-11-07 04:01:34,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 44. [2019-11-07 04:01:34,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-11-07 04:01:34,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2019-11-07 04:01:34,649 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 25 [2019-11-07 04:01:34,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:01:34,649 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2019-11-07 04:01:34,649 INFO L463 AbstractCegarLoop]: Interpolant automaton has 33 states. [2019-11-07 04:01:34,650 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2019-11-07 04:01:34,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-07 04:01:34,652 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:01:34,652 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:01:34,855 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:01:34,856 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:01:34,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:01:34,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1006291992, now seen corresponding path program 1 times [2019-11-07 04:01:34,857 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:01:34,858 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124571709] [2019-11-07 04:01:34,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:01:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:01:35,052 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-07 04:01:35,053 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124571709] [2019-11-07 04:01:35,056 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298325650] [2019-11-07 04:01:35,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:01:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:01:35,119 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 04:01:35,125 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:01:35,205 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 04:01:35,205 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:01:35,264 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-07 04:01:35,264 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [519724713] [2019-11-07 04:01:35,266 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2019-11-07 04:01:35,267 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:01:35,267 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:01:35,267 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:01:35,268 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:01:35,282 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 6 for LOIs [2019-11-07 04:01:36,403 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 11 for LOIs [2019-11-07 04:01:36,409 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 3 for LOIs [2019-11-07 04:01:36,411 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 04:01:37,041 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 38 [2019-11-07 04:01:37,600 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2019-11-07 04:01:37,601 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-07 04:01:37,602 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7, 7, 15] total 35 [2019-11-07 04:01:37,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995481031] [2019-11-07 04:01:37,603 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-11-07 04:01:37,604 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:01:37,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-11-07 04:01:37,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1061, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 04:01:37,607 INFO L87 Difference]: Start difference. First operand 44 states and 56 transitions. Second operand 35 states. [2019-11-07 04:01:40,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:01:40,056 INFO L93 Difference]: Finished difference Result 86 states and 113 transitions. [2019-11-07 04:01:40,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-11-07 04:01:40,057 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 38 [2019-11-07 04:01:40,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:01:40,058 INFO L225 Difference]: With dead ends: 86 [2019-11-07 04:01:40,058 INFO L226 Difference]: Without dead ends: 49 [2019-11-07 04:01:40,061 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 90 SyntacticMatches, 4 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=629, Invalid=2911, Unknown=0, NotChecked=0, Total=3540 [2019-11-07 04:01:40,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-11-07 04:01:40,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2019-11-07 04:01:40,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-07 04:01:40,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2019-11-07 04:01:40,073 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 38 [2019-11-07 04:01:40,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:01:40,073 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2019-11-07 04:01:40,073 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-11-07 04:01:40,073 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2019-11-07 04:01:40,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-11-07 04:01:40,075 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:01:40,075 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:01:40,278 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:01:40,279 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:01:40,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:01:40,279 INFO L82 PathProgramCache]: Analyzing trace with hash -236723464, now seen corresponding path program 2 times [2019-11-07 04:01:40,280 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:01:40,281 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880422439] [2019-11-07 04:01:40,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:01:40,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:01:40,373 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 37 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 04:01:40,374 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880422439] [2019-11-07 04:01:40,374 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599267149] [2019-11-07 04:01:40,374 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:01:40,434 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-11-07 04:01:40,434 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 04:01:40,437 INFO L256 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-07 04:01:40,441 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:01:40,515 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-07 04:01:40,516 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:01:40,568 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 31 proven. 13 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-07 04:01:40,568 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [71376502] [2019-11-07 04:01:40,569 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2019-11-07 04:01:40,569 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:01:40,570 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:01:40,570 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:01:40,570 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:01:40,582 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 6 for LOIs [2019-11-07 04:01:41,384 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 11 for LOIs [2019-11-07 04:01:41,390 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 3 for LOIs [2019-11-07 04:01:41,391 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 04:01:41,903 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 40 [2019-11-07 04:01:42,329 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-07 04:01:42,329 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7, 15] total 33 [2019-11-07 04:01:42,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797586384] [2019-11-07 04:01:42,331 INFO L442 AbstractCegarLoop]: Interpolant automaton has 33 states [2019-11-07 04:01:42,332 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:01:42,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2019-11-07 04:01:42,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2019-11-07 04:01:42,333 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 33 states. [2019-11-07 04:01:43,591 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 35 [2019-11-07 04:01:44,539 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 36 [2019-11-07 04:01:44,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:01:44,576 INFO L93 Difference]: Finished difference Result 79 states and 96 transitions. [2019-11-07 04:01:44,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-11-07 04:01:44,578 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 52 [2019-11-07 04:01:44,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:01:44,579 INFO L225 Difference]: With dead ends: 79 [2019-11-07 04:01:44,579 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 04:01:44,580 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 132 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=646, Invalid=2546, Unknown=0, NotChecked=0, Total=3192 [2019-11-07 04:01:44,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 04:01:44,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 04:01:44,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 04:01:44,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 04:01:44,581 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2019-11-07 04:01:44,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:01:44,582 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 04:01:44,582 INFO L463 AbstractCegarLoop]: Interpolant automaton has 33 states. [2019-11-07 04:01:44,582 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 04:01:44,582 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 04:01:44,784 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:01:44,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 04:01:45,286 WARN L191 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 55 [2019-11-07 04:01:45,490 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 42 [2019-11-07 04:01:45,913 WARN L191 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2019-11-07 04:01:46,334 WARN L191 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 52 [2019-11-07 04:01:46,337 INFO L439 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~__BLAST_NONDET~0 |old(~__BLAST_NONDET~0)|) [2019-11-07 04:01:46,337 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-07 04:01:46,337 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-07 04:01:46,337 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (= ~__BLAST_NONDET~0 0) [2019-11-07 04:01:46,337 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-07 04:01:46,337 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-07 04:01:46,337 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 11 26) no Hoare annotation was computed. [2019-11-07 04:01:46,338 INFO L439 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: (let ((.cse4 (* 2 main_~i~0))) (let ((.cse0 (< main_~l~0 1000000)) (.cse5 (< main_~k~0 main_~j~0)) (.cse1 (<= (+ main_~j~0 3) (+ .cse4 main_~k~0 main_~n~0))) (.cse2 (< main_~n~0 1000000)) (.cse3 (< main_~m~0 1000000)) (.cse6 (< 0 (+ main_~l~0 1000000))) (.cse7 (< 0 (+ main_~m~0 1000000)))) (or (and .cse0 (<= 2 main_~i~0) (< main_~j~0 (* 3 main_~i~0)) (<= 0 main_~k~0) .cse1 .cse2 .cse3 (< main_~i~0 main_~n~0) (<= .cse4 main_~j~0) .cse5 .cse6 .cse7) (and (and .cse0 (<= (div (- main_~j~0) (- 2)) main_~k~0) .cse5 (<= main_~i~0 1) (<= main_~k~0 main_~i~0)) .cse1 .cse2 .cse3 .cse6 .cse7) (not (= 0 ~__BLAST_NONDET~0))))) [2019-11-07 04:01:46,338 INFO L443 ceAbstractionStarter]: For program point L23-1(lines 22 23) no Hoare annotation was computed. [2019-11-07 04:01:46,338 INFO L443 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2019-11-07 04:01:46,338 INFO L446 ceAbstractionStarter]: At program point L24(lines 11 26) the Hoare annotation is: true [2019-11-07 04:01:46,338 INFO L439 ceAbstractionStarter]: At program point L20-3(lines 20 23) the Hoare annotation is: (let ((.cse0 (< main_~l~0 1000000)) (.cse5 (<= main_~i~0 main_~n~0)) (.cse4 (< main_~n~0 1000000)) (.cse1 (< main_~m~0 1000000)) (.cse2 (< 0 (+ main_~l~0 1000000))) (.cse3 (< 0 (+ main_~m~0 1000000)))) (or (and .cse0 (and (<= (* 3 main_~n~0) (+ main_~l~0 main_~m~0)) (= main_~i~0 0)) .cse1 (< 0 (+ main_~n~0 1000000)) .cse2 .cse3) (and .cse4 .cse1 (<= main_~k~0 (+ main_~i~0 (* 2 main_~n~0))) .cse2 (<= (* 3 main_~i~0) (+ main_~j~0 3)) .cse3 (and (<= 2 main_~i~0) (<= 0 main_~k~0) (or (and .cse0 (< main_~j~0 (+ main_~k~0 2)) .cse5) (and .cse0 (<= (+ main_~j~0 1) (+ main_~i~0 main_~n~0)))))) (and .cse0 .cse5 (<= 1 main_~i~0) .cse4 .cse1 (and (<= 0 main_~j~0) (<= main_~j~0 0)) .cse2 (<= main_~i~0 1) .cse3) (not (= 0 ~__BLAST_NONDET~0)))) [2019-11-07 04:01:46,339 INFO L443 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2019-11-07 04:01:46,339 INFO L439 ceAbstractionStarter]: At program point L21-3(lines 21 23) the Hoare annotation is: (let ((.cse10 (* 2 main_~i~0))) (let ((.cse4 (< main_~i~0 main_~n~0)) (.cse8 (<= (* 3 main_~n~0) (+ main_~l~0 main_~m~0))) (.cse9 (= .cse10 main_~j~0)) (.cse0 (< main_~l~0 1000000)) (.cse1 (<= main_~k~0 (+ main_~i~0 (* 2 main_~n~0)))) (.cse2 (< main_~n~0 1000000)) (.cse3 (< main_~m~0 1000000)) (.cse5 (<= .cse10 main_~j~0)) (.cse6 (< 0 (+ main_~l~0 1000000))) (.cse7 (< 0 (+ main_~m~0 1000000)))) (or (and .cse0 .cse1 (<= 1 main_~i~0) (< main_~j~0 (+ main_~k~0 2)) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7) (and .cse0 (<= 0 main_~i~0) .cse8 (<= main_~i~0 0) .cse3 .cse4 .cse9) (and (and .cse0 .cse8 (= main_~i~0 1) .cse9) .cse3 (<= 2 main_~n~0)) (and .cse0 (<= 2 main_~i~0) (<= (+ main_~j~0 1) (+ main_~i~0 main_~n~0)) (< main_~j~0 (* 3 main_~i~0)) (<= 0 main_~k~0) .cse1 .cse2 .cse3 .cse5 .cse6 .cse7) (not (= 0 ~__BLAST_NONDET~0))))) [2019-11-07 04:01:46,339 INFO L443 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2019-11-07 04:01:46,339 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 11 26) no Hoare annotation was computed. [2019-11-07 04:01:46,339 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 11 26) the Hoare annotation is: true [2019-11-07 04:01:46,339 INFO L439 ceAbstractionStarter]: At program point L22-2(lines 22 23) the Hoare annotation is: (let ((.cse7 (* 2 main_~i~0))) (let ((.cse3 (<= (+ main_~j~0 3) (+ .cse7 main_~k~0 main_~n~0))) (.cse1 (* 3 main_~i~0)) (.cse2 (<= main_~k~0 (+ main_~i~0 (* 2 main_~n~0)))) (.cse4 (< main_~n~0 1000000)) (.cse5 (< main_~m~0 1000000)) (.cse8 (< 0 (+ main_~l~0 1000000))) (.cse9 (< 0 (+ main_~m~0 1000000))) (.cse0 (< main_~l~0 1000000)) (.cse6 (< main_~i~0 main_~n~0)) (.cse11 (<= main_~i~0 1)) (.cse10 (div (- main_~j~0) (- 2)))) (or (and .cse0 (<= 2 main_~i~0) (< main_~j~0 .cse1) (<= 0 main_~k~0) .cse2 .cse3 .cse4 .cse5 .cse6 (<= .cse7 main_~j~0) .cse8 .cse9) (and .cse4 .cse5 .cse8 .cse9 (and .cse0 (<= .cse10 main_~k~0) .cse3 (< main_~k~0 main_~j~0) .cse11) (<= (+ main_~k~0 2) .cse1)) (and .cse2 .cse4 .cse5 (< main_~i~0 main_~j~0) .cse8 .cse9 (and .cse0 .cse6 (<= main_~j~0 .cse7) .cse11 (<= (+ .cse10 1) main_~k~0))) (not (= 0 ~__BLAST_NONDET~0))))) [2019-11-07 04:01:46,340 INFO L443 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2019-11-07 04:01:46,340 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-11-07 04:01:46,340 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-07 04:01:46,340 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-11-07 04:01:46,340 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-07 04:01:46,340 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-07 04:01:46,340 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-11-07 04:01:46,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:01:46 BoogieIcfgContainer [2019-11-07 04:01:46,363 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 04:01:46,365 INFO L168 Benchmark]: Toolchain (without parser) took 18727.12 ms. Allocated memory was 146.3 MB in the beginning and 363.3 MB in the end (delta: 217.1 MB). Free memory was 102.9 MB in the beginning and 307.6 MB in the end (delta: -204.7 MB). Peak memory consumption was 227.6 MB. Max. memory is 7.1 GB. [2019-11-07 04:01:46,366 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 146.3 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-07 04:01:46,367 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.67 ms. Allocated memory is still 146.3 MB. Free memory was 102.6 MB in the beginning and 93.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-11-07 04:01:46,368 INFO L168 Benchmark]: Boogie Preprocessor took 139.01 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 93.0 MB in the beginning and 181.3 MB in the end (delta: -88.3 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-11-07 04:01:46,369 INFO L168 Benchmark]: RCFGBuilder took 389.57 ms. Allocated memory is still 202.9 MB. Free memory was 181.3 MB in the beginning and 165.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2019-11-07 04:01:46,370 INFO L168 Benchmark]: TraceAbstraction took 17943.50 ms. Allocated memory was 202.9 MB in the beginning and 363.3 MB in the end (delta: 160.4 MB). Free memory was 164.7 MB in the beginning and 307.6 MB in the end (delta: -142.9 MB). Peak memory consumption was 232.8 MB. Max. memory is 7.1 GB. [2019-11-07 04:01:46,374 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 146.3 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 250.67 ms. Allocated memory is still 146.3 MB. Free memory was 102.6 MB in the beginning and 93.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 139.01 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 93.0 MB in the beginning and 181.3 MB in the end (delta: -88.3 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 389.57 ms. Allocated memory is still 202.9 MB. Free memory was 181.3 MB in the beginning and 165.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 17943.50 ms. Allocated memory was 202.9 MB in the beginning and 363.3 MB in the end (delta: 160.4 MB). Free memory was 164.7 MB in the beginning and 307.6 MB in the end (delta: -142.9 MB). Peak memory consumption was 232.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: (((((((l < 1000000 && 3 * n <= l + m && i == 0) && m < 1000000) && 0 < n + 1000000) && 0 < l + 1000000) && 0 < m + 1000000) || ((((((n < 1000000 && m < 1000000) && k <= i + 2 * n) && 0 < l + 1000000) && 3 * i <= j + 3) && 0 < m + 1000000) && (2 <= i && 0 <= k) && (((l < 1000000 && j < k + 2) && i <= n) || (l < 1000000 && j + 1 <= i + n)))) || ((((((((l < 1000000 && i <= n) && 1 <= i) && n < 1000000) && m < 1000000) && 0 <= j && j <= 0) && 0 < l + 1000000) && i <= 1) && 0 < m + 1000000)) || !(0 == __BLAST_NONDET) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((((((((((((l < 1000000 && k <= i + 2 * n) && 1 <= i) && j < k + 2) && n < 1000000) && m < 1000000) && i < n) && 2 * i <= j) && 0 < l + 1000000) && 0 < m + 1000000) || ((((((l < 1000000 && 0 <= i) && 3 * n <= l + m) && i <= 0) && m < 1000000) && i < n) && 2 * i == j)) || (((((l < 1000000 && 3 * n <= l + m) && i == 1) && 2 * i == j) && m < 1000000) && 2 <= n)) || ((((((((((l < 1000000 && 2 <= i) && j + 1 <= i + n) && j < 3 * i) && 0 <= k) && k <= i + 2 * n) && n < 1000000) && m < 1000000) && 2 * i <= j) && 0 < l + 1000000) && 0 < m + 1000000)) || !(0 == __BLAST_NONDET) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (((((((((((((l < 1000000 && 2 <= i) && j < 3 * i) && 0 <= k) && k <= i + 2 * n) && j + 3 <= 2 * i + k + n) && n < 1000000) && m < 1000000) && i < n) && 2 * i <= j) && 0 < l + 1000000) && 0 < m + 1000000) || (((((n < 1000000 && m < 1000000) && 0 < l + 1000000) && 0 < m + 1000000) && (((l < 1000000 && -j / -2 <= k) && j + 3 <= 2 * i + k + n) && k < j) && i <= 1) && k + 2 <= 3 * i)) || ((((((k <= i + 2 * n && n < 1000000) && m < 1000000) && i < j) && 0 < l + 1000000) && 0 < m + 1000000) && (((l < 1000000 && i < n) && j <= 2 * i) && i <= 1) && -j / -2 + 1 <= k)) || !(0 == __BLAST_NONDET) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. Result: SAFE, OverallTime: 17.8s, OverallIterations: 5, TraceHistogramMax: 5, AutomataDifference: 7.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.5s, HoareTripleCheckerStatistics: 72 SDtfs, 363 SDslu, 419 SDs, 0 SdLazy, 1324 SolverSat, 493 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 510 GetRequests, 301 SyntacticMatches, 10 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1970 ImplicationChecksByTransitivity, 9.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=4, 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, 5 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 30 PreInvPairs, 62 NumberOfFragments, 562 HoareAnnotationTreeSize, 30 FomulaSimplifications, 2222 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 1935 FormulaSimplificationTreeSizeReductionInter, 1.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 282 NumberOfCodeBlocks, 246 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 402 ConstructedInterpolants, 0 QuantifiedInterpolants, 40961 SizeOfPredicates, 15 NumberOfNonLiveVariables, 272 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 13 InterpolantComputations, 2 PerfectInterpolantSequences, 283/375 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 2650, ICFG_INTERPRETER_ENTERED_PROCEDURES: 12, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 83, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 191, TOOLS_POST_TIME[ms]: 149, TOOLS_POST_CALL_APPLICATIONS: 53, TOOLS_POST_CALL_TIME[ms]: 691, TOOLS_POST_RETURN_APPLICATIONS: 44, TOOLS_POST_RETURN_TIME[ms]: 46, TOOLS_QUANTIFIERELIM_APPLICATIONS: 288, TOOLS_QUANTIFIERELIM_TIME[ms]: 803, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 72, FLUID_QUERY_TIME[ms]: 23, FLUID_QUERIES: 468, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 46, DOMAIN_JOIN_TIME[ms]: 732, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 30, DOMAIN_WIDEN_TIME[ms]: 615, DOMAIN_ISSUBSETEQ_APPLICATIONS: 52, DOMAIN_ISSUBSETEQ_TIME[ms]: 112, DOMAIN_ISBOTTOM_APPLICATIONS: 83, DOMAIN_ISBOTTOM_TIME[ms]: 147, LOOP_SUMMARIZER_APPLICATIONS: 22, LOOP_SUMMARIZER_CACHE_MISSES: 22, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 2220, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 2219, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 52, CALL_SUMMARIZER_APPLICATIONS: 44, CALL_SUMMARIZER_CACHE_MISSES: 6, CALL_SUMMARIZER_OVERALL_TIME[ms]: 11, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 10, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 9, PATH_EXPR_TIME[ms]: 5, REGEX_TO_DAG_TIME[ms]: 5, DAG_COMPRESSION_TIME[ms]: 26, DAG_COMPRESSION_PROCESSED_NODES: 500, DAG_COMPRESSION_RETAINED_NODES: 219, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...