/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/ldv-regression/test_while_int.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 03:50:46,250 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-11-07 03:50:46,297 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 03:50:46,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 03:50:46,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 03:50:46,303 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 03:50:46,305 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 03:50:46,306 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 03:50:46,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 03:50:46,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 03:50:46,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 03:50:46,319 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 03:50:46,322 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 03:50:46,323 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 03:50:46,326 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 03:50:46,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 03:50:46,338 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 03:50:46,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 03:50:46,340 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 03:50:46,372 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 03:50:46,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 03:50:46,378 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 03:50:46,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 03:50:46,379 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 03:50:46,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 03:50:46,379 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 03:50:46,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 03:50:46,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 03:50:46,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 03:50:46,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 03:50:46,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 03:50:46,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 03:50:46,381 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 03:50:46,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 03:50:46,381 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 03:50:46,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 03:50:46,382 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 03:50:46,382 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 03:50:46,382 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 03:50:46,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 03:50:46,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 03:50:46,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 03:50:46,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 03:50:46,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 03:50:46,384 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 03:50:46,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 03:50:46,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 03:50:46,384 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 03:50:46,705 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 03:50:46,725 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 03:50:46,728 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 03:50:46,730 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 03:50:46,730 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 03:50:46,731 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_while_int.c_1.i [2019-11-07 03:50:46,803 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/105f87f68/fee5b9c27b254f29a0e964824ff52e71/FLAG8f93ae0a9 [2019-11-07 03:50:47,268 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 03:50:47,268 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_while_int.c_1.i [2019-11-07 03:50:47,275 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/105f87f68/fee5b9c27b254f29a0e964824ff52e71/FLAG8f93ae0a9 [2019-11-07 03:50:47,726 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/105f87f68/fee5b9c27b254f29a0e964824ff52e71 [2019-11-07 03:50:47,751 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 03:50:47,757 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 03:50:47,766 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 03:50:47,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 03:50:47,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 03:50:47,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:50:47" (1/1) ... [2019-11-07 03:50:47,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67be1e70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:47, skipping insertion in model container [2019-11-07 03:50:47,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:50:47" (1/1) ... [2019-11-07 03:50:47,805 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 03:50:47,845 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 03:50:48,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 03:50:48,064 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 03:50:48,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 03:50:48,094 INFO L192 MainTranslator]: Completed translation [2019-11-07 03:50:48,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:48 WrapperNode [2019-11-07 03:50:48,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 03:50:48,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 03:50:48,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 03:50:48,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 03:50:48,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:48" (1/1) ... [2019-11-07 03:50:48,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:48" (1/1) ... [2019-11-07 03:50:48,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:48" (1/1) ... [2019-11-07 03:50:48,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:48" (1/1) ... [2019-11-07 03:50:48,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:48" (1/1) ... [2019-11-07 03:50:48,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:48" (1/1) ... [2019-11-07 03:50:48,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:48" (1/1) ... [2019-11-07 03:50:48,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 03:50:48,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 03:50:48,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 03:50:48,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 03:50:48,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:48" (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 03:50:48,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 03:50:48,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 03:50:48,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2019-11-07 03:50:48,266 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 03:50:48,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 03:50:48,266 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2019-11-07 03:50:48,266 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 03:50:48,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 03:50:48,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 03:50:48,443 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 03:50:48,444 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 03:50:48,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:50:48 BoogieIcfgContainer [2019-11-07 03:50:48,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 03:50:48,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 03:50:48,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 03:50:48,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 03:50:48,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:50:47" (1/3) ... [2019-11-07 03:50:48,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4179cd34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:50:48, skipping insertion in model container [2019-11-07 03:50:48,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:48" (2/3) ... [2019-11-07 03:50:48,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4179cd34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:50:48, skipping insertion in model container [2019-11-07 03:50:48,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:50:48" (3/3) ... [2019-11-07 03:50:48,453 INFO L109 eAbstractionObserver]: Analyzing ICFG test_while_int.c_1.i [2019-11-07 03:50:48,463 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 03:50:48,470 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 03:50:48,482 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 03:50:48,506 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 03:50:48,506 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 03:50:48,506 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 03:50:48,506 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 03:50:48,507 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 03:50:48,507 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 03:50:48,507 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 03:50:48,507 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 03:50:48,523 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-07 03:50:48,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-07 03:50:48,527 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:50:48,528 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:50:48,529 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:50:48,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:50:48,535 INFO L82 PathProgramCache]: Analyzing trace with hash 676687463, now seen corresponding path program 1 times [2019-11-07 03:50:48,542 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:50:48,542 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043456164] [2019-11-07 03:50:48,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:50:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:50:48,681 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 03:50:48,681 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043456164] [2019-11-07 03:50:48,682 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:50:48,682 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 03:50:48,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614349387] [2019-11-07 03:50:48,688 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 03:50:48,689 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:50:48,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 03:50:48,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-07 03:50:48,707 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 4 states. [2019-11-07 03:50:48,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:50:48,840 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2019-11-07 03:50:48,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 03:50:48,843 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-07 03:50:48,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:50:48,863 INFO L225 Difference]: With dead ends: 25 [2019-11-07 03:50:48,864 INFO L226 Difference]: Without dead ends: 13 [2019-11-07 03:50:48,871 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-07 03:50:48,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-07 03:50:48,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-11-07 03:50:48,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-07 03:50:48,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-07 03:50:48,943 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2019-11-07 03:50:48,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:50:48,944 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-07 03:50:48,944 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 03:50:48,944 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-07 03:50:48,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-07 03:50:48,945 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:50:48,945 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:50:48,946 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:50:48,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:50:48,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1754257002, now seen corresponding path program 1 times [2019-11-07 03:50:48,946 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:50:48,947 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620878475] [2019-11-07 03:50:48,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:50:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:50:49,007 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 03:50:49,008 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620878475] [2019-11-07 03:50:49,008 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501041811] [2019-11-07 03:50:49,008 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 03:50:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:50:49,058 INFO L256 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 03:50:49,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 03:50:49,090 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 03:50:49,090 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 03:50:49,120 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 03:50:49,122 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1496640547] [2019-11-07 03:50:49,146 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2019-11-07 03:50:49,146 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 03:50:49,152 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 03:50:49,159 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 03:50:49,160 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 03:50:49,220 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-11-07 03:50:49,332 INFO L197 IcfgInterpreter]: Interpreting procedure __blast_assert with input of size 1 for LOIs [2019-11-07 03:50:49,336 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-11-07 03:50:49,339 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 03:50:49,420 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-07 03:50:49,420 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 4] total 8 [2019-11-07 03:50:49,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397097154] [2019-11-07 03:50:49,425 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 03:50:49,426 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:50:49,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 03:50:49,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-07 03:50:49,427 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 8 states. [2019-11-07 03:50:49,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:50:49,572 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-11-07 03:50:49,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 03:50:49,573 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2019-11-07 03:50:49,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:50:49,574 INFO L225 Difference]: With dead ends: 18 [2019-11-07 03:50:49,575 INFO L226 Difference]: Without dead ends: 15 [2019-11-07 03:50:49,576 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-11-07 03:50:49,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-07 03:50:49,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2019-11-07 03:50:49,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-07 03:50:49,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-11-07 03:50:49,589 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2019-11-07 03:50:49,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:50:49,589 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-11-07 03:50:49,589 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 03:50:49,590 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-11-07 03:50:49,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-07 03:50:49,591 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:50:49,591 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:50:49,796 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 03:50:49,797 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:50:49,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:50:49,798 INFO L82 PathProgramCache]: Analyzing trace with hash -2083501651, now seen corresponding path program 2 times [2019-11-07 03:50:49,798 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:50:49,798 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933858825] [2019-11-07 03:50:49,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:50:49,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-07 03:50:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-07 03:50:49,833 INFO L172 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-07 03:50:49,833 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-07 03:50:49,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:50:49 BoogieIcfgContainer [2019-11-07 03:50:49,855 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 03:50:49,858 INFO L168 Benchmark]: Toolchain (without parser) took 2101.08 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 101.5 MB in the beginning and 103.9 MB in the end (delta: -2.4 MB). Peak memory consumption was 62.1 MB. Max. memory is 7.1 GB. [2019-11-07 03:50:49,859 INFO L168 Benchmark]: CDTParser took 1.11 ms. Allocated memory is still 136.8 MB. Free memory was 120.1 MB in the beginning and 119.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-11-07 03:50:49,860 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.18 ms. Allocated memory is still 136.8 MB. Free memory was 101.3 MB in the beginning and 92.2 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. [2019-11-07 03:50:49,863 INFO L168 Benchmark]: Boogie Preprocessor took 116.80 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 92.2 MB in the beginning and 180.0 MB in the end (delta: -87.8 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2019-11-07 03:50:49,866 INFO L168 Benchmark]: RCFGBuilder took 232.62 ms. Allocated memory is still 201.3 MB. Free memory was 180.0 MB in the beginning and 167.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2019-11-07 03:50:49,867 INFO L168 Benchmark]: TraceAbstraction took 1409.31 ms. Allocated memory is still 201.3 MB. Free memory was 167.9 MB in the beginning and 103.9 MB in the end (delta: 64.0 MB). Peak memory consumption was 64.0 MB. Max. memory is 7.1 GB. [2019-11-07 03:50:49,871 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.11 ms. Allocated memory is still 136.8 MB. Free memory was 120.1 MB in the beginning and 119.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 329.18 ms. Allocated memory is still 136.8 MB. Free memory was 101.3 MB in the beginning and 92.2 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.80 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 92.2 MB in the beginning and 180.0 MB in the end (delta: -87.8 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 232.62 ms. Allocated memory is still 201.3 MB. Free memory was 180.0 MB in the beginning and 167.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1409.31 ms. Allocated memory is still 201.3 MB. Free memory was 167.9 MB in the beginning and 103.9 MB in the end (delta: 64.0 MB). Peak memory consumption was 64.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int i=0; VAL [i=0] [L13] COND TRUE i<5 [L14] i++ VAL [i=1] [L16] (i!=3) ? (0) : __blast_assert () VAL [i=1] [L13] COND TRUE i<5 [L14] i++ VAL [i=2] [L16] (i!=3) ? (0) : __blast_assert () VAL [i=2] [L13] COND TRUE i<5 [L14] i++ VAL [i=3] [L16] (i!=3) ? (0) : __blast_assert () VAL [i=3] [L16] CALL __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 14 locations, 1 error locations. Result: UNSAFE, OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 7 SDslu, 46 SDs, 0 SdLazy, 30 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 636 SizeOfPredicates, 1 NumberOfNonLiveVariables, 25 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 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]: 194, ICFG_INTERPRETER_ENTERED_PROCEDURES: 4, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 9, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 13, TOOLS_POST_TIME[ms]: 9, TOOLS_POST_CALL_APPLICATIONS: 5, TOOLS_POST_CALL_TIME[ms]: 2, TOOLS_POST_RETURN_APPLICATIONS: 2, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 20, TOOLS_QUANTIFIERELIM_TIME[ms]: 6, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 2, FLUID_QUERY_TIME[ms]: 4, FLUID_QUERIES: 41, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 3, DOMAIN_JOIN_TIME[ms]: 48, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 46, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME[ms]: 8, DOMAIN_ISBOTTOM_APPLICATIONS: 9, DOMAIN_ISBOTTOM_TIME[ms]: 15, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 63, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 63, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 2, CALL_SUMMARIZER_CACHE_MISSES: 1, CALL_SUMMARIZER_OVERALL_TIME[ms]: 3, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 3, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 4, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 16, DAG_COMPRESSION_PROCESSED_NODES: 62, DAG_COMPRESSION_RETAINED_NODES: 43, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...