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/test11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 12:48:20,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 12:48:20,189 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 12:48:20,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 12:48:20,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 12:48:20,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 12:48:20,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 12:48:20,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 12:48:20,207 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 12:48:20,208 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 12:48:20,209 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 12:48:20,210 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 12:48:20,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 12:48:20,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 12:48:20,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 12:48:20,214 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 12:48:20,215 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 12:48:20,219 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 12:48:20,220 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 12:48:20,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 12:48:20,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 12:48:20,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 12:48:20,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 12:48:20,228 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 12:48:20,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 12:48:20,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 12:48:20,244 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 12:48:20,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 12:48:20,245 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 [2019-10-07 12:48:20,259 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 12:48:20,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 12:48:20,260 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 12:48:20,260 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 12:48:20,260 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 12:48:20,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 12:48:20,261 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 12:48:20,261 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 12:48:20,261 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 12:48:20,261 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 12:48:20,261 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 12:48:20,262 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 12:48:20,262 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 12:48:20,262 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 12:48:20,262 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 12:48:20,263 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 12:48:20,263 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 12:48:20,263 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 12:48:20,263 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 12:48:20,263 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 12:48:20,263 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 12:48:20,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 12:48:20,264 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 12:48:20,264 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 12:48:20,264 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 12:48:20,264 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 12:48:20,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 12:48:20,265 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 12:48:20,265 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 [2019-10-07 12:48:20,540 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 12:48:20,554 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 12:48:20,557 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 12:48:20,558 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 12:48:20,559 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 12:48:20,560 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test11.c [2019-10-07 12:48:20,628 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55f04df41/cec11de07bf1485dae5642ca1e2d3ee0/FLAG6d518f239 [2019-10-07 12:48:21,070 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 12:48:21,070 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test11.c [2019-10-07 12:48:21,076 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55f04df41/cec11de07bf1485dae5642ca1e2d3ee0/FLAG6d518f239 [2019-10-07 12:48:21,491 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55f04df41/cec11de07bf1485dae5642ca1e2d3ee0 [2019-10-07 12:48:21,500 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 12:48:21,502 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 12:48:21,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 12:48:21,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 12:48:21,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 12:48:21,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:48:21" (1/1) ... [2019-10-07 12:48:21,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6226574d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:48:21, skipping insertion in model container [2019-10-07 12:48:21,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:48:21" (1/1) ... [2019-10-07 12:48:21,517 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 12:48:21,536 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 12:48:21,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 12:48:21,748 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 12:48:21,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 12:48:21,788 INFO L192 MainTranslator]: Completed translation [2019-10-07 12:48:21,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:48:21 WrapperNode [2019-10-07 12:48:21,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 12:48:21,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 12:48:21,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 12:48:21,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 12:48:21,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:48:21" (1/1) ... [2019-10-07 12:48:21,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:48:21" (1/1) ... [2019-10-07 12:48:21,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:48:21" (1/1) ... [2019-10-07 12:48:21,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:48:21" (1/1) ... [2019-10-07 12:48:21,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:48:21" (1/1) ... [2019-10-07 12:48:21,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:48:21" (1/1) ... [2019-10-07 12:48:21,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:48:21" (1/1) ... [2019-10-07 12:48:21,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 12:48:21,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 12:48:21,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 12:48:21,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 12:48:21,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:48:21" (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 [2019-10-07 12:48:21,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 12:48:21,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 12:48:21,951 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2019-10-07 12:48:21,951 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 12:48:21,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 12:48:21,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 12:48:21,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-07 12:48:21,952 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2019-10-07 12:48:21,952 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 12:48:21,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 12:48:21,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 12:48:21,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 12:48:21,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 12:48:21,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 12:48:21,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 12:48:21,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 12:48:22,360 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 12:48:22,361 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-07 12:48:22,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:48:22 BoogieIcfgContainer [2019-10-07 12:48:22,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 12:48:22,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 12:48:22,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 12:48:22,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 12:48:22,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 12:48:21" (1/3) ... [2019-10-07 12:48:22,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ae3d06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:48:22, skipping insertion in model container [2019-10-07 12:48:22,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:48:21" (2/3) ... [2019-10-07 12:48:22,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ae3d06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:48:22, skipping insertion in model container [2019-10-07 12:48:22,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:48:22" (3/3) ... [2019-10-07 12:48:22,369 INFO L109 eAbstractionObserver]: Analyzing ICFG test11.c [2019-10-07 12:48:22,379 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 12:48:22,386 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 12:48:22,398 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 12:48:22,422 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 12:48:22,422 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 12:48:22,422 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 12:48:22,422 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 12:48:22,423 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 12:48:22,423 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 12:48:22,423 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 12:48:22,423 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 12:48:22,440 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-10-07 12:48:22,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 12:48:22,446 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 12:48:22,447 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 12:48:22,449 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 12:48:22,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 12:48:22,455 INFO L82 PathProgramCache]: Analyzing trace with hash 109693310, now seen corresponding path program 1 times [2019-10-07 12:48:22,463 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 12:48:22,463 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:48:22,463 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:48:22,464 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:48:22,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 12:48:22,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 12:48:22,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 12:48:22,717 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:48:22,717 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 12:48:22,718 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 12:48:22,722 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 12:48:22,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 12:48:22,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 12:48:22,737 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 4 states. [2019-10-07 12:48:22,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 12:48:22,778 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2019-10-07 12:48:22,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 12:48:22,780 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-07 12:48:22,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 12:48:22,789 INFO L225 Difference]: With dead ends: 23 [2019-10-07 12:48:22,789 INFO L226 Difference]: Without dead ends: 13 [2019-10-07 12:48:22,793 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 12:48:22,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-10-07 12:48:22,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-10-07 12:48:22,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-07 12:48:22,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2019-10-07 12:48:22,827 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 11 [2019-10-07 12:48:22,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 12:48:22,828 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2019-10-07 12:48:22,828 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 12:48:22,828 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2019-10-07 12:48:22,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-07 12:48:22,829 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 12:48:22,829 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 12:48:22,829 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 12:48:22,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 12:48:22,830 INFO L82 PathProgramCache]: Analyzing trace with hash -894472818, now seen corresponding path program 1 times [2019-10-07 12:48:22,830 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 12:48:22,830 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:48:22,830 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:48:22,831 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:48:22,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 12:48:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 12:48:22,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 12:48:22,917 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:48:22,918 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 12:48:22,920 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 12:48:22,922 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 12:48:22,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 12:48:22,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 12:48:22,923 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand 4 states. [2019-10-07 12:48:22,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 12:48:22,949 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2019-10-07 12:48:22,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 12:48:22,950 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-10-07 12:48:22,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 12:48:22,951 INFO L225 Difference]: With dead ends: 13 [2019-10-07 12:48:22,951 INFO L226 Difference]: Without dead ends: 0 [2019-10-07 12:48:22,952 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 12:48:22,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-07 12:48:22,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-07 12:48:22,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-07 12:48:22,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-07 12:48:22,954 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2019-10-07 12:48:22,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 12:48:22,954 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-07 12:48:22,954 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 12:48:22,955 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-07 12:48:22,955 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-07 12:48:22,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-07 12:48:23,016 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-07 12:48:23,016 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-07 12:48:23,016 INFO L446 ceAbstractionStarter]: At program point get_dummyENTRY(lines 7 10) the Hoare annotation is: true [2019-10-07 12:48:23,016 INFO L443 ceAbstractionStarter]: For program point get_dummyEXIT(lines 7 10) no Hoare annotation was computed. [2019-10-07 12:48:23,017 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-07 12:48:23,017 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-07 12:48:23,017 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-07 12:48:23,017 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-07 12:48:23,017 INFO L439 ceAbstractionStarter]: At program point L25(lines 12 32) the Hoare annotation is: false [2019-10-07 12:48:23,018 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 12 32) no Hoare annotation was computed. [2019-10-07 12:48:23,018 INFO L439 ceAbstractionStarter]: At program point L17(line 17) the Hoare annotation is: (and (= |main_~#c~0.offset| main_~pc~0.offset) (not (= main_~pc~0.base 0)) (= main_~pc~0.base |main_~#c~0.base|)) [2019-10-07 12:48:23,020 INFO L443 ceAbstractionStarter]: For program point L17-1(line 17) no Hoare annotation was computed. [2019-10-07 12:48:23,020 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 30) no Hoare annotation was computed. [2019-10-07 12:48:23,020 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 12 32) no Hoare annotation was computed. [2019-10-07 12:48:23,020 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 12 32) the Hoare annotation is: true [2019-10-07 12:48:23,021 INFO L443 ceAbstractionStarter]: For program point L24(lines 24 26) no Hoare annotation was computed. [2019-10-07 12:48:23,021 INFO L443 ceAbstractionStarter]: For program point L18-2(lines 18 21) no Hoare annotation was computed. [2019-10-07 12:48:23,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 12:48:23 BoogieIcfgContainer [2019-10-07 12:48:23,032 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-07 12:48:23,035 INFO L168 Benchmark]: Toolchain (without parser) took 1531.42 ms. Allocated memory was 136.8 MB in the beginning and 199.8 MB in the end (delta: 62.9 MB). Free memory was 101.6 MB in the beginning and 118.3 MB in the end (delta: -16.8 MB). Peak memory consumption was 46.2 MB. Max. memory is 7.1 GB. [2019-10-07 12:48:23,036 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 136.8 MB. Free memory is still 119.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-07 12:48:23,039 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.03 ms. Allocated memory is still 136.8 MB. Free memory was 101.2 MB in the beginning and 91.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-10-07 12:48:23,041 INFO L168 Benchmark]: Boogie Preprocessor took 105.14 ms. Allocated memory was 136.8 MB in the beginning and 199.8 MB in the end (delta: 62.9 MB). Free memory was 91.3 MB in the beginning and 177.2 MB in the end (delta: -85.9 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2019-10-07 12:48:23,043 INFO L168 Benchmark]: RCFGBuilder took 466.79 ms. Allocated memory is still 199.8 MB. Free memory was 177.2 MB in the beginning and 154.7 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2019-10-07 12:48:23,044 INFO L168 Benchmark]: TraceAbstraction took 668.43 ms. Allocated memory is still 199.8 MB. Free memory was 153.7 MB in the beginning and 118.3 MB in the end (delta: 35.4 MB). Peak memory consumption was 35.4 MB. Max. memory is 7.1 GB. [2019-10-07 12:48:23,055 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 136.8 MB. Free memory is still 119.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 287.03 ms. Allocated memory is still 136.8 MB. Free memory was 101.2 MB in the beginning and 91.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 105.14 ms. Allocated memory was 136.8 MB in the beginning and 199.8 MB in the end (delta: 62.9 MB). Free memory was 91.3 MB in the beginning and 177.2 MB in the end (delta: -85.9 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 466.79 ms. Allocated memory is still 199.8 MB. Free memory was 177.2 MB in the beginning and 154.7 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 668.43 ms. Allocated memory is still 199.8 MB. Free memory was 153.7 MB in the beginning and 118.3 MB in the end (delta: 35.4 MB). Peak memory consumption was 35.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 30]: 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: 12]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Result: SAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 6 SDslu, 36 SDs, 0 SdLazy, 6 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 17 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 511 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...