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/eca-rers2012/Problem15_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 03:30:31,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 03:30:31,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 03:30:31,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-07 03:30:31,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 03:30:31,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 03:30:31,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 03:30:31,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 03:30:31,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 03:30:31,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 03:30:31,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 03:30:31,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 03:30:31,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 03:30:31,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 03:30:31,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 03:30:31,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 03:30:31,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 03:30:31,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 03:30:31,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 03:30:31,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 03:30:31,918 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 03:30:31,949 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 03:30:31,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 03:30:31,950 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 03:30:31,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 03:30:31,951 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 03:30:31,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 03:30:31,955 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 03:30:31,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 03:30:31,956 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 03:30:31,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 03:30:31,956 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 03:30:31,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 03:30:31,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 03:30:31,957 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 03:30:31,957 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 03:30:31,957 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 03:30:31,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 03:30:31,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 03:30:31,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 03:30:31,959 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 03:30:31,959 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 03:30:31,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 03:30:31,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 03:30:31,960 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 03:30:31,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 03:30:31,964 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 03:30:31,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 03:30:31,965 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 03:30:31,965 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 03:30:32,274 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 03:30:32,297 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 03:30:32,301 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 03:30:32,302 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 03:30:32,303 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 03:30:32,304 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label44.c [2019-10-07 03:30:32,378 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f259a14b5/0a64bacf119e446284e9dfe10f82363e/FLAG07ea25342 [2019-10-07 03:30:33,046 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 03:30:33,047 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label44.c [2019-10-07 03:30:33,069 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f259a14b5/0a64bacf119e446284e9dfe10f82363e/FLAG07ea25342 [2019-10-07 03:30:33,210 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f259a14b5/0a64bacf119e446284e9dfe10f82363e [2019-10-07 03:30:33,223 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 03:30:33,225 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 03:30:33,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 03:30:33,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 03:30:33,233 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 03:30:33,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:30:33" (1/1) ... [2019-10-07 03:30:33,236 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5de83e51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:33, skipping insertion in model container [2019-10-07 03:30:33,237 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:30:33" (1/1) ... [2019-10-07 03:30:33,246 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 03:30:33,330 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 03:30:34,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:30:34,410 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 03:30:34,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:30:34,753 INFO L192 MainTranslator]: Completed translation [2019-10-07 03:30:34,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:34 WrapperNode [2019-10-07 03:30:34,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 03:30:34,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 03:30:34,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 03:30:34,755 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 03:30:34,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:34" (1/1) ... [2019-10-07 03:30:34,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:34" (1/1) ... [2019-10-07 03:30:34,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:34" (1/1) ... [2019-10-07 03:30:34,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:34" (1/1) ... [2019-10-07 03:30:34,876 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:34" (1/1) ... [2019-10-07 03:30:34,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:34" (1/1) ... [2019-10-07 03:30:34,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:34" (1/1) ... [2019-10-07 03:30:34,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 03:30:34,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 03:30:34,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 03:30:34,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 03:30:34,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:34" (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 03:30:35,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 03:30:35,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 03:30:35,007 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 03:30:35,008 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-07 03:30:35,008 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 03:30:35,008 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 03:30:35,008 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-07 03:30:35,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 03:30:35,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 03:30:35,009 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 03:30:35,009 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 03:30:35,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 03:30:35,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 03:30:43,103 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 03:30:43,104 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 03:30:43,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:30:43 BoogieIcfgContainer [2019-10-07 03:30:43,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 03:30:43,108 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 03:30:43,108 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 03:30:43,112 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 03:30:43,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:30:33" (1/3) ... [2019-10-07 03:30:43,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dff0739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:30:43, skipping insertion in model container [2019-10-07 03:30:43,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:34" (2/3) ... [2019-10-07 03:30:43,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dff0739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:30:43, skipping insertion in model container [2019-10-07 03:30:43,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:30:43" (3/3) ... [2019-10-07 03:30:43,126 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label44.c [2019-10-07 03:30:43,147 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 03:30:43,157 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 03:30:43,168 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 03:30:43,204 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 03:30:43,204 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 03:30:43,204 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 03:30:43,204 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 03:30:43,204 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 03:30:43,204 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 03:30:43,204 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 03:30:43,205 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 03:30:43,230 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states. [2019-10-07 03:30:43,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 03:30:43,236 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:30:43,238 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:30:43,239 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:30:43,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:30:43,245 INFO L82 PathProgramCache]: Analyzing trace with hash 648057134, now seen corresponding path program 1 times [2019-10-07 03:30:43,252 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:30:43,253 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:43,253 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:43,253 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:43,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:30:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:30:43,537 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 03:30:43,538 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:43,538 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:30:43,539 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 03:30:43,543 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 03:30:43,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 03:30:43,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 03:30:43,560 INFO L87 Difference]: Start difference. First operand 243 states. Second operand 4 states. [2019-10-07 03:30:47,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:30:47,484 INFO L93 Difference]: Finished difference Result 949 states and 1846 transitions. [2019-10-07 03:30:47,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 03:30:47,488 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-07 03:30:47,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:30:47,510 INFO L225 Difference]: With dead ends: 949 [2019-10-07 03:30:47,511 INFO L226 Difference]: Without dead ends: 699 [2019-10-07 03:30:47,519 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 03:30:47,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2019-10-07 03:30:47,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 467. [2019-10-07 03:30:47,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2019-10-07 03:30:47,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 742 transitions. [2019-10-07 03:30:47,604 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 742 transitions. Word has length 11 [2019-10-07 03:30:47,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:30:47,605 INFO L462 AbstractCegarLoop]: Abstraction has 467 states and 742 transitions. [2019-10-07 03:30:47,605 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 03:30:47,605 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 742 transitions. [2019-10-07 03:30:47,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-07 03:30:47,608 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:30:47,610 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:30:47,610 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:30:47,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:30:47,611 INFO L82 PathProgramCache]: Analyzing trace with hash 2085380344, now seen corresponding path program 1 times [2019-10-07 03:30:47,611 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:30:47,611 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:47,611 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:47,611 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:47,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:30:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:30:47,763 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:30:47,763 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:47,763 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:30:47,764 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 03:30:47,765 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 03:30:47,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 03:30:47,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 03:30:47,766 INFO L87 Difference]: Start difference. First operand 467 states and 742 transitions. Second operand 4 states. [2019-10-07 03:30:50,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:30:50,760 INFO L93 Difference]: Finished difference Result 1847 states and 2973 transitions. [2019-10-07 03:30:50,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 03:30:50,762 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2019-10-07 03:30:50,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:30:50,772 INFO L225 Difference]: With dead ends: 1847 [2019-10-07 03:30:50,772 INFO L226 Difference]: Without dead ends: 1385 [2019-10-07 03:30:50,774 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 03:30:50,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2019-10-07 03:30:50,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 1142. [2019-10-07 03:30:50,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1142 states. [2019-10-07 03:30:50,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1673 transitions. [2019-10-07 03:30:50,834 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1673 transitions. Word has length 20 [2019-10-07 03:30:50,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:30:50,835 INFO L462 AbstractCegarLoop]: Abstraction has 1142 states and 1673 transitions. [2019-10-07 03:30:50,835 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 03:30:50,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1673 transitions. [2019-10-07 03:30:50,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-10-07 03:30:50,839 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:30:50,840 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:30:50,840 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:30:50,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:30:50,841 INFO L82 PathProgramCache]: Analyzing trace with hash -543778070, now seen corresponding path program 1 times [2019-10-07 03:30:50,841 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:30:50,841 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:50,841 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:50,841 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:50,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:30:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:30:51,072 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 22 proven. 36 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 03:30:51,073 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:51,073 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:30:51,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:30:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:30:51,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-07 03:30:51,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:30:51,335 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-07 03:30:51,336 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:30:51,532 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 23 proven. 51 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 03:30:51,532 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 03:30:51,557 INFO L162 IcfgInterpreter]: Started Sifa with 42 locations of interest [2019-10-07 03:30:51,557 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 03:30:51,562 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 03:30:51,567 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 03:30:51,568 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 03:30:51,743 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 58 for LOIs [2019-10-07 03:30:51,881 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 60 [2019-10-07 03:30:52,602 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 7048 conjuctions. This might take some time... [2019-10-07 03:30:52,682 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 60 [2019-10-07 03:30:53,127 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 7048 conjuctions. This might take some time... [2019-10-07 03:30:53,450 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:30:53,451 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:178) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:169) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 03:30:53,457 INFO L168 Benchmark]: Toolchain (without parser) took 20230.93 ms. Allocated memory was 146.3 MB in the beginning and 566.8 MB in the end (delta: 420.5 MB). Free memory was 97.5 MB in the beginning and 345.8 MB in the end (delta: -248.3 MB). Peak memory consumption was 172.2 MB. Max. memory is 7.1 GB. [2019-10-07 03:30:53,458 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 03:30:53,459 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1525.45 ms. Allocated memory was 146.3 MB in the beginning and 228.1 MB in the end (delta: 81.8 MB). Free memory was 97.3 MB in the beginning and 151.9 MB in the end (delta: -54.7 MB). Peak memory consumption was 45.6 MB. Max. memory is 7.1 GB. [2019-10-07 03:30:53,460 INFO L168 Benchmark]: Boogie Preprocessor took 191.31 ms. Allocated memory is still 228.1 MB. Free memory was 151.9 MB in the beginning and 139.8 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2019-10-07 03:30:53,461 INFO L168 Benchmark]: RCFGBuilder took 8161.10 ms. Allocated memory was 228.1 MB in the beginning and 350.2 MB in the end (delta: 122.2 MB). Free memory was 139.8 MB in the beginning and 293.0 MB in the end (delta: -153.2 MB). Peak memory consumption was 183.3 MB. Max. memory is 7.1 GB. [2019-10-07 03:30:53,462 INFO L168 Benchmark]: TraceAbstraction took 10346.12 ms. Allocated memory was 350.2 MB in the beginning and 566.8 MB in the end (delta: 216.5 MB). Free memory was 293.0 MB in the beginning and 345.8 MB in the end (delta: -52.8 MB). Peak memory consumption was 163.8 MB. Max. memory is 7.1 GB. [2019-10-07 03:30:53,468 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1525.45 ms. Allocated memory was 146.3 MB in the beginning and 228.1 MB in the end (delta: 81.8 MB). Free memory was 97.3 MB in the beginning and 151.9 MB in the end (delta: -54.7 MB). Peak memory consumption was 45.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 191.31 ms. Allocated memory is still 228.1 MB. Free memory was 151.9 MB in the beginning and 139.8 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8161.10 ms. Allocated memory was 228.1 MB in the beginning and 350.2 MB in the end (delta: 122.2 MB). Free memory was 139.8 MB in the beginning and 293.0 MB in the end (delta: -153.2 MB). Peak memory consumption was 183.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10346.12 ms. Allocated memory was 350.2 MB in the beginning and 566.8 MB in the end (delta: 216.5 MB). Free memory was 293.0 MB in the beginning and 345.8 MB in the end (delta: -52.8 MB). Peak memory consumption was 163.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true;: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...