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/ldv-regression/test15.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:01:34,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:01:34,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:01:34,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:01:34,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:01:34,402 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:01:34,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:01:34,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:01:34,407 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:01:34,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:01:34,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:01:34,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:01:34,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:01:34,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:01:34,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:01:34,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:01:34,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:01:34,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:01:34,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:01:34,421 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:01:34,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:01:34,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:01:34,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:01:34,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:01:34,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:01:34,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:01:34,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:01:34,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:01:34,443 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 01:01:34,470 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:01:34,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:01:34,473 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:01:34,474 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:01:34,474 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:01:34,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:01:34,474 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:01:34,475 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:01:34,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:01:34,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:01:34,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:01:34,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:01:34,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:01:34,477 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:01:34,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:01:34,478 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:01:34,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:01:34,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:01:34,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:01:34,478 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:01:34,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:01:34,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:01:34,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:01:34,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:01:34,480 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:01:34,480 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:01:34,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:01:34,480 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:01:34,480 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 01:01:34,779 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:01:34,794 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:01:34,797 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:01:34,799 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:01:34,799 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:01:34,800 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test15.c [2019-10-15 01:01:34,871 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cb79b511/f399a933f00f4382ae18b5975ed30adb/FLAGf4cafb689 [2019-10-15 01:01:35,364 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:01:35,366 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test15.c [2019-10-15 01:01:35,374 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cb79b511/f399a933f00f4382ae18b5975ed30adb/FLAGf4cafb689 [2019-10-15 01:01:35,754 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cb79b511/f399a933f00f4382ae18b5975ed30adb [2019-10-15 01:01:35,766 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:01:35,768 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:01:35,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:01:35,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:01:35,773 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:01:35,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:01:35" (1/1) ... [2019-10-15 01:01:35,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4da87ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:35, skipping insertion in model container [2019-10-15 01:01:35,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:01:35" (1/1) ... [2019-10-15 01:01:35,786 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:01:35,807 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:01:36,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:01:36,040 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:01:36,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:01:36,067 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:01:36,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:36 WrapperNode [2019-10-15 01:01:36,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:01:36,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:01:36,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:01:36,069 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:01:36,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:36" (1/1) ... [2019-10-15 01:01:36,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:36" (1/1) ... [2019-10-15 01:01:36,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:36" (1/1) ... [2019-10-15 01:01:36,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:36" (1/1) ... [2019-10-15 01:01:36,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:36" (1/1) ... [2019-10-15 01:01:36,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:36" (1/1) ... [2019-10-15 01:01:36,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:36" (1/1) ... [2019-10-15 01:01:36,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:01:36,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:01:36,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:01:36,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:01:36,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:36" (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 01:01:36,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:01:36,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:01:36,266 INFO L138 BoogieDeclarations]: Found implementation of procedure assign [2019-10-15 01:01:36,266 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:01:36,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:01:36,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:01:36,266 INFO L130 BoogieDeclarations]: Found specification of procedure assign [2019-10-15 01:01:36,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:01:36,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:01:36,266 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:01:36,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:01:36,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:01:36,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:01:36,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:01:36,492 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:01:36,492 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-15 01:01:36,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:01:36 BoogieIcfgContainer [2019-10-15 01:01:36,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:01:36,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:01:36,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:01:36,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:01:36,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:01:35" (1/3) ... [2019-10-15 01:01:36,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@232bdc0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:01:36, skipping insertion in model container [2019-10-15 01:01:36,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:36" (2/3) ... [2019-10-15 01:01:36,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@232bdc0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:01:36, skipping insertion in model container [2019-10-15 01:01:36,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:01:36" (3/3) ... [2019-10-15 01:01:36,502 INFO L109 eAbstractionObserver]: Analyzing ICFG test15.c [2019-10-15 01:01:36,511 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:01:36,517 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:01:36,528 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:01:36,559 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:01:36,559 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:01:36,559 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:01:36,559 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:01:36,560 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:01:36,560 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:01:36,561 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:01:36,561 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:01:36,579 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-10-15 01:01:36,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-15 01:01:36,584 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:01:36,585 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:01:36,587 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:01:36,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:01:36,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1573149608, now seen corresponding path program 1 times [2019-10-15 01:01:36,602 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:01:36,602 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306188714] [2019-10-15 01:01:36,602 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:01:36,602 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:01:36,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:01:36,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:01:37,094 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 01:01:37,096 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306188714] [2019-10-15 01:01:37,097 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:01:37,098 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:01:37,098 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812429399] [2019-10-15 01:01:37,104 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:01:37,109 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:01:37,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:01:37,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:01:37,131 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 6 states. [2019-10-15 01:01:37,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:01:37,262 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2019-10-15 01:01:37,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:01:37,265 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2019-10-15 01:01:37,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:01:37,272 INFO L225 Difference]: With dead ends: 22 [2019-10-15 01:01:37,273 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 01:01:37,277 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:01:37,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 01:01:37,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 01:01:37,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 01:01:37,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 01:01:37,305 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-10-15 01:01:37,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:01:37,305 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 01:01:37,306 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:01:37,306 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 01:01:37,306 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 01:01:37,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 01:01:37,334 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:01:37,334 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:01:37,334 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:01:37,335 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:01:37,335 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-15 01:01:37,335 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:01:37,335 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:01:37,336 INFO L439 ceAbstractionStarter]: At program point L14(lines 9 21) the Hoare annotation is: false [2019-10-15 01:01:37,336 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 9 21) the Hoare annotation is: true [2019-10-15 01:01:37,336 INFO L443 ceAbstractionStarter]: For program point L13(lines 13 15) no Hoare annotation was computed. [2019-10-15 01:01:37,336 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 9 21) no Hoare annotation was computed. [2019-10-15 01:01:37,337 INFO L439 ceAbstractionStarter]: At program point L12(line 12) the Hoare annotation is: (not (= |main_~#b~0.base| |main_~#a~0.base|)) [2019-10-15 01:01:37,337 INFO L443 ceAbstractionStarter]: For program point L12-1(line 12) no Hoare annotation was computed. [2019-10-15 01:01:37,337 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 9 21) no Hoare annotation was computed. [2019-10-15 01:01:37,337 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2019-10-15 01:01:37,337 INFO L443 ceAbstractionStarter]: For program point assignEXIT(lines 5 7) no Hoare annotation was computed. [2019-10-15 01:01:37,338 INFO L446 ceAbstractionStarter]: At program point assignENTRY(lines 5 7) the Hoare annotation is: true [2019-10-15 01:01:37,338 INFO L443 ceAbstractionStarter]: For program point assignFINAL(lines 5 7) no Hoare annotation was computed. [2019-10-15 01:01:37,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:01:37 BoogieIcfgContainer [2019-10-15 01:01:37,346 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 01:01:37,349 INFO L168 Benchmark]: Toolchain (without parser) took 1579.80 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 101.0 MB in the beginning and 133.3 MB in the end (delta: -32.3 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2019-10-15 01:01:37,350 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 136.3 MB. Free memory was 119.6 MB in the beginning and 119.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-15 01:01:37,351 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.31 ms. Allocated memory is still 136.3 MB. Free memory was 100.8 MB in the beginning and 91.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-10-15 01:01:37,352 INFO L168 Benchmark]: Boogie Preprocessor took 131.09 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 91.2 MB in the beginning and 178.5 MB in the end (delta: -87.3 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2019-10-15 01:01:37,353 INFO L168 Benchmark]: RCFGBuilder took 294.09 ms. Allocated memory is still 200.3 MB. Free memory was 178.5 MB in the beginning and 165.5 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2019-10-15 01:01:37,354 INFO L168 Benchmark]: TraceAbstraction took 850.88 ms. Allocated memory is still 200.3 MB. Free memory was 164.8 MB in the beginning and 133.3 MB in the end (delta: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 7.1 GB. [2019-10-15 01:01:37,358 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 136.3 MB. Free memory was 119.6 MB in the beginning and 119.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 299.31 ms. Allocated memory is still 136.3 MB. Free memory was 100.8 MB in the beginning and 91.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.09 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 91.2 MB in the beginning and 178.5 MB in the end (delta: -87.3 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 294.09 ms. Allocated memory is still 200.3 MB. Free memory was 178.5 MB in the beginning and 165.5 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 850.88 ms. Allocated memory is still 200.3 MB. Free memory was 164.8 MB in the beginning and 133.3 MB in the end (delta: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: 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: 9]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Result: SAFE, OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 2 SDslu, 41 SDs, 0 SdLazy, 14 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 10 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 660 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...