java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/loops/for_infinite_loop_2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:06:00,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:06:00,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:06:00,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:06:00,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:06:00,257 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:06:00,259 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:06:00,272 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:06:00,274 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:06:00,275 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:06:00,277 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:06:00,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:06:00,279 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:06:00,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:06:00,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:06:00,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:06:00,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:06:00,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:06:00,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:06:00,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:06:00,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:06:00,306 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:06:00,309 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:06:00,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:06:00,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:06:00,317 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:06:00,318 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:06:00,319 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:06:00,320 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:06:00,321 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:06:00,322 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:06:00,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:06:00,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:06:00,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:06:00,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:06:00,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:06:00,326 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:06:00,347 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:06:00,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:06:00,349 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:06:00,349 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:06:00,350 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:06:00,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:06:00,350 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:06:00,350 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:06:00,350 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:06:00,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:06:00,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:06:00,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:06:00,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:06:00,353 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:06:00,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:06:00,353 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:06:00,353 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:06:00,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:06:00,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:06:00,354 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:06:00,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:06:00,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:06:00,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:06:00,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:06:00,355 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:06:00,355 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:06:00,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:06:00,356 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:06:00,356 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:06:00,638 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:06:00,652 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:06:00,656 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:06:00,657 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:06:00,658 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:06:00,659 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/for_infinite_loop_2.c [2019-10-15 01:06:00,737 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0d611a1e/5ece033fc4ec4bda9394651687f53cc4/FLAG803564fc2 [2019-10-15 01:06:01,251 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:06:01,252 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/for_infinite_loop_2.c [2019-10-15 01:06:01,260 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0d611a1e/5ece033fc4ec4bda9394651687f53cc4/FLAG803564fc2 [2019-10-15 01:06:01,632 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0d611a1e/5ece033fc4ec4bda9394651687f53cc4 [2019-10-15 01:06:01,643 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:06:01,645 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:06:01,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:06:01,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:06:01,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:06:01,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:06:01" (1/1) ... [2019-10-15 01:06:01,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35da1448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:01, skipping insertion in model container [2019-10-15 01:06:01,655 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:06:01" (1/1) ... [2019-10-15 01:06:01,662 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:06:01,676 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:06:01,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:06:01,852 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:06:01,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:06:01,892 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:06:01,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:01 WrapperNode [2019-10-15 01:06:01,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:06:01,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:06:01,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:06:01,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:06:01,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:01" (1/1) ... [2019-10-15 01:06:01,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:01" (1/1) ... [2019-10-15 01:06:02,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:01" (1/1) ... [2019-10-15 01:06:02,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:01" (1/1) ... [2019-10-15 01:06:02,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:01" (1/1) ... [2019-10-15 01:06:02,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:01" (1/1) ... [2019-10-15 01:06:02,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:01" (1/1) ... [2019-10-15 01:06:02,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:06:02,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:06:02,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:06:02,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:06:02,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:06:02,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:06:02,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:06:02,075 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 01:06:02,075 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:06:02,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:06:02,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 01:06:02,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 01:06:02,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:06:02,076 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:06:02,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:06:02,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:06:02,240 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:06:02,241 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:06:02,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:06:02 BoogieIcfgContainer [2019-10-15 01:06:02,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:06:02,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:06:02,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:06:02,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:06:02,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:06:01" (1/3) ... [2019-10-15 01:06:02,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233d734e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:06:02, skipping insertion in model container [2019-10-15 01:06:02,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:01" (2/3) ... [2019-10-15 01:06:02,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233d734e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:06:02, skipping insertion in model container [2019-10-15 01:06:02,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:06:02" (3/3) ... [2019-10-15 01:06:02,259 INFO L109 eAbstractionObserver]: Analyzing ICFG for_infinite_loop_2.c [2019-10-15 01:06:02,290 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:06:02,300 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:06:02,313 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:06:02,342 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:06:02,342 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:06:02,342 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:06:02,342 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:06:02,343 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:06:02,343 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:06:02,343 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:06:02,343 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:06:02,365 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-10-15 01:06:02,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-15 01:06:02,371 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:06:02,372 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:06:02,375 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:06:02,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:02,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1285605631, now seen corresponding path program 1 times [2019-10-15 01:06:02,404 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:06:02,404 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036860555] [2019-10-15 01:06:02,404 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:02,405 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:02,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:06:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:02,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:02,605 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036860555] [2019-10-15 01:06:02,606 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:06:02,607 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:06:02,607 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139064012] [2019-10-15 01:06:02,613 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:06:02,616 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:06:02,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:06:02,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:06:02,637 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2019-10-15 01:06:02,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:06:02,702 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2019-10-15 01:06:02,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:06:02,705 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-10-15 01:06:02,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:06:02,712 INFO L225 Difference]: With dead ends: 31 [2019-10-15 01:06:02,713 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 01:06:02,716 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:06:02,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 01:06:02,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 01:06:02,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 01:06:02,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 01:06:02,740 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-10-15 01:06:02,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:06:02,741 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 01:06:02,741 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:06:02,741 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 01:06:02,741 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 01:06:02,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 01:06:02,782 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-15 01:06:02,782 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:06:02,783 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:06:02,783 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-15 01:06:02,783 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:06:02,783 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:06:02,784 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 13 23) the Hoare annotation is: true [2019-10-15 01:06:02,784 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 13 23) no Hoare annotation was computed. [2019-10-15 01:06:02,785 INFO L439 ceAbstractionStarter]: At program point L20(line 20) the Hoare annotation is: (= main_~x~0 0) [2019-10-15 01:06:02,786 INFO L443 ceAbstractionStarter]: For program point L20-1(lines 18 21) no Hoare annotation was computed. [2019-10-15 01:06:02,786 INFO L443 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2019-10-15 01:06:02,786 INFO L439 ceAbstractionStarter]: At program point L18-2(lines 18 21) the Hoare annotation is: (= main_~x~0 0) [2019-10-15 01:06:02,787 INFO L439 ceAbstractionStarter]: At program point L18-3(lines 18 21) the Hoare annotation is: false [2019-10-15 01:06:02,787 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 13 23) no Hoare annotation was computed. [2019-10-15 01:06:02,787 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2019-10-15 01:06:02,788 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2019-10-15 01:06:02,788 INFO L443 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2019-10-15 01:06:02,788 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-10-15 01:06:02,789 INFO L443 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2019-10-15 01:06:02,789 INFO L443 ceAbstractionStarter]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2019-10-15 01:06:02,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:06:02 BoogieIcfgContainer [2019-10-15 01:06:02,806 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 01:06:02,809 INFO L168 Benchmark]: Toolchain (without parser) took 1162.72 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 106.1 MB in the beginning and 144.7 MB in the end (delta: -38.7 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:02,810 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 147.8 MB. Free memory was 124.2 MB in the beginning and 124.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-10-15 01:06:02,811 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.16 ms. Allocated memory is still 147.8 MB. Free memory was 105.6 MB in the beginning and 96.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:02,812 INFO L168 Benchmark]: Boogie Preprocessor took 119.91 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 96.5 MB in the beginning and 182.6 MB in the end (delta: -86.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:02,813 INFO L168 Benchmark]: RCFGBuilder took 229.67 ms. Allocated memory is still 204.5 MB. Free memory was 182.6 MB in the beginning and 171.5 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:02,814 INFO L168 Benchmark]: TraceAbstraction took 554.28 ms. Allocated memory is still 204.5 MB. Free memory was 170.9 MB in the beginning and 144.7 MB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:02,819 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 147.8 MB. Free memory was 124.2 MB in the beginning and 124.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 247.16 ms. Allocated memory is still 147.8 MB. Free memory was 105.6 MB in the beginning and 96.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.91 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 96.5 MB in the beginning and 182.6 MB in the end (delta: -86.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 229.67 ms. Allocated memory is still 204.5 MB. Free memory was 182.6 MB in the beginning and 171.5 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 554.28 ms. Allocated memory is still 204.5 MB. Free memory was 170.9 MB in the beginning and 144.7 MB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: x == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Result: SAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 14 SDtfs, 8 SDslu, 33 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 10 PreInvPairs, 12 NumberOfFragments, 12 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 220 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...