/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/test20.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 03:50:24,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 03:50:24,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 03:50:24,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 03:50:24,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 03:50:24,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 03:50:24,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 03:50:24,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 03:50:24,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 03:50:24,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 03:50:24,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 03:50:24,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 03:50:24,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 03:50:24,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 03:50:24,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 03:50:24,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 03:50:24,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 03:50:24,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 03:50:24,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 03:50:24,391 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 03:50:24,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 03:50:24,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 03:50:24,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 03:50:24,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 03:50:24,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 03:50:24,406 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 03:50:24,407 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 03:50:24,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 03:50:24,409 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 03:50:24,423 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 03:50:24,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 03:50:24,425 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 03:50:24,425 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 03:50:24,425 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 03:50:24,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 03:50:24,426 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 03:50:24,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 03:50:24,426 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 03:50:24,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 03:50:24,427 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 03:50:24,427 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 03:50:24,427 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 03:50:24,427 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 03:50:24,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 03:50:24,427 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 03:50:24,428 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 03:50:24,428 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 03:50:24,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 03:50:24,428 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 03:50:24,429 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 03:50:24,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 03:50:24,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 03:50:24,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 03:50:24,429 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 03:50:24,430 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 03:50:24,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 03:50:24,430 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 03:50:24,430 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 03:50:24,731 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 03:50:24,744 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 03:50:24,747 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 03:50:24,749 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 03:50:24,749 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 03:50:24,750 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test20.c [2019-11-07 03:50:24,819 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecfc2249b/3142e032177a4551a56b9d06581efcde/FLAG081c38824 [2019-11-07 03:50:25,302 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 03:50:25,304 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test20.c [2019-11-07 03:50:25,310 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecfc2249b/3142e032177a4551a56b9d06581efcde/FLAG081c38824 [2019-11-07 03:50:25,708 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecfc2249b/3142e032177a4551a56b9d06581efcde [2019-11-07 03:50:25,717 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 03:50:25,719 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 03:50:25,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 03:50:25,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 03:50:25,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 03:50:25,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:50:25" (1/1) ... [2019-11-07 03:50:25,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a5e3700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:25, skipping insertion in model container [2019-11-07 03:50:25,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:50:25" (1/1) ... [2019-11-07 03:50:25,735 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 03:50:25,753 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 03:50:25,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 03:50:25,913 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 03:50:25,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 03:50:25,948 INFO L192 MainTranslator]: Completed translation [2019-11-07 03:50:25,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:25 WrapperNode [2019-11-07 03:50:25,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 03:50:25,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 03:50:25,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 03:50:25,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 03:50:26,041 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:25" (1/1) ... [2019-11-07 03:50:26,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:25" (1/1) ... [2019-11-07 03:50:26,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:25" (1/1) ... [2019-11-07 03:50:26,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:25" (1/1) ... [2019-11-07 03:50:26,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:25" (1/1) ... [2019-11-07 03:50:26,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:25" (1/1) ... [2019-11-07 03:50:26,057 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:25" (1/1) ... [2019-11-07 03:50:26,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 03:50:26,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 03:50:26,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 03:50:26,059 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 03:50:26,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:25" (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 03:50:26,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 03:50:26,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 03:50:26,114 INFO L138 BoogieDeclarations]: Found implementation of procedure equal [2019-11-07 03:50:26,114 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 03:50:26,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 03:50:26,115 INFO L130 BoogieDeclarations]: Found specification of procedure equal [2019-11-07 03:50:26,115 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 03:50:26,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 03:50:26,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 03:50:26,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 03:50:26,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 03:50:26,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 03:50:26,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 03:50:26,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 03:50:26,387 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 03:50:26,388 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-07 03:50:26,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:50:26 BoogieIcfgContainer [2019-11-07 03:50:26,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 03:50:26,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 03:50:26,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 03:50:26,401 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 03:50:26,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:50:25" (1/3) ... [2019-11-07 03:50:26,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69bf211f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:50:26, skipping insertion in model container [2019-11-07 03:50:26,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:25" (2/3) ... [2019-11-07 03:50:26,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69bf211f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:50:26, skipping insertion in model container [2019-11-07 03:50:26,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:50:26" (3/3) ... [2019-11-07 03:50:26,411 INFO L109 eAbstractionObserver]: Analyzing ICFG test20.c [2019-11-07 03:50:26,424 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 03:50:26,432 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 03:50:26,445 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 03:50:26,467 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 03:50:26,468 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 03:50:26,468 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 03:50:26,468 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 03:50:26,468 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 03:50:26,468 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 03:50:26,468 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 03:50:26,469 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 03:50:26,484 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-07 03:50:26,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-07 03:50:26,489 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:50:26,490 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:50:26,491 INFO L410 AbstractCegarLoop]: === Iteration 1 === [equalErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:50:26,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:50:26,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1521762966, now seen corresponding path program 1 times [2019-11-07 03:50:26,503 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:50:26,504 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463458640] [2019-11-07 03:50:26,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:50:26,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:50:26,721 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 03:50:26,722 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463458640] [2019-11-07 03:50:26,723 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:50:26,723 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 03:50:26,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076747311] [2019-11-07 03:50:26,729 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 03:50:26,730 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:50:26,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 03:50:26,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 03:50:26,749 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 5 states. [2019-11-07 03:50:26,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:50:26,841 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2019-11-07 03:50:26,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 03:50:26,843 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-07 03:50:26,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:50:26,851 INFO L225 Difference]: With dead ends: 21 [2019-11-07 03:50:26,851 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 03:50:26,855 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-07 03:50:26,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 03:50:26,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 03:50:26,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 03:50:26,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 03:50:26,880 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-11-07 03:50:26,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:50:26,880 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 03:50:26,881 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 03:50:26,881 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 03:50:26,881 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 03:50:26,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 03:50:26,937 INFO L443 ceAbstractionStarter]: For program point equalEXIT(lines 4 12) no Hoare annotation was computed. [2019-11-07 03:50:26,938 INFO L446 ceAbstractionStarter]: At program point equalENTRY(lines 4 12) the Hoare annotation is: true [2019-11-07 03:50:26,938 INFO L443 ceAbstractionStarter]: For program point equalFINAL(lines 4 12) no Hoare annotation was computed. [2019-11-07 03:50:26,938 INFO L443 ceAbstractionStarter]: For program point equalErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2019-11-07 03:50:26,939 INFO L439 ceAbstractionStarter]: At program point L6(lines 4 12) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (= |equal_#in~a.base| |equal_#in~b.base|)) [2019-11-07 03:50:26,939 INFO L443 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2019-11-07 03:50:26,939 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-11-07 03:50:26,939 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-07 03:50:26,939 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-07 03:50:26,940 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (not (= |~#b~0.base| |~#a~0.base|)) [2019-11-07 03:50:26,940 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-07 03:50:26,940 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-07 03:50:26,940 INFO L443 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2019-11-07 03:50:26,940 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 16 19) the Hoare annotation is: true [2019-11-07 03:50:26,941 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 16 19) no Hoare annotation was computed. [2019-11-07 03:50:26,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:50:26 BoogieIcfgContainer [2019-11-07 03:50:26,955 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 03:50:26,958 INFO L168 Benchmark]: Toolchain (without parser) took 1237.89 ms. Allocated memory was 134.7 MB in the beginning and 198.7 MB in the end (delta: 64.0 MB). Free memory was 99.8 MB in the beginning and 134.5 MB in the end (delta: -34.8 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. [2019-11-07 03:50:26,959 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 134.7 MB. Free memory is still 117.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-11-07 03:50:26,960 INFO L168 Benchmark]: CACSL2BoogieTranslator took 229.34 ms. Allocated memory is still 134.7 MB. Free memory was 99.8 MB in the beginning and 89.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-11-07 03:50:26,961 INFO L168 Benchmark]: Boogie Preprocessor took 108.88 ms. Allocated memory was 134.7 MB in the beginning and 198.7 MB in the end (delta: 64.0 MB). Free memory was 89.9 MB in the beginning and 176.2 MB in the end (delta: -86.4 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2019-11-07 03:50:26,962 INFO L168 Benchmark]: RCFGBuilder took 331.94 ms. Allocated memory is still 198.7 MB. Free memory was 176.2 MB in the beginning and 162.8 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2019-11-07 03:50:26,963 INFO L168 Benchmark]: TraceAbstraction took 563.11 ms. Allocated memory is still 198.7 MB. Free memory was 161.7 MB in the beginning and 134.5 MB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2019-11-07 03:50:26,967 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 134.7 MB. Free memory is still 117.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 229.34 ms. Allocated memory is still 134.7 MB. Free memory was 99.8 MB in the beginning and 89.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.88 ms. Allocated memory was 134.7 MB in the beginning and 198.7 MB in the end (delta: 64.0 MB). Free memory was 89.9 MB in the beginning and 176.2 MB in the end (delta: -86.4 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 331.94 ms. Allocated memory is still 198.7 MB. Free memory was 176.2 MB in the beginning and 162.8 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 563.11 ms. Allocated memory is still 198.7 MB. Free memory was 161.7 MB in the beginning and 134.5 MB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: 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: 4]: Loop Invariant Derived loop invariant: a == b || a == b - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 15 locations, 1 error locations. Result: SAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 12 SDslu, 16 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 6 LocationsWithAnnotation, 6 PreInvPairs, 6 NumberOfFragments, 15 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 22 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 154 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...