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/Problem16_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 03:31:12,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 03:31:12,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 03:31:12,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 03:31:12,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 03:31:12,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 03:31:12,859 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 03:31:12,861 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 03:31:12,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 03:31:12,863 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 03:31:12,864 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 03:31:12,865 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 03:31:12,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 03:31:12,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 03:31:12,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 03:31:12,869 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 03:31:12,870 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 03:31:12,871 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 03:31:12,873 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 03:31:12,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 03:31:12,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 03:31:12,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 03:31:12,882 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 03:31:12,883 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 03:31:12,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 03:31:12,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 03:31:12,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 03:31:12,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 03:31:12,905 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 03:31:12,929 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 03:31:12,929 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 03:31:12,932 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 03:31:12,932 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 03:31:12,932 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 03:31:12,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 03:31:12,933 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 03:31:12,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 03:31:12,933 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 03:31:12,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 03:31:12,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 03:31:12,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 03:31:12,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 03:31:12,935 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 03:31:12,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 03:31:12,936 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 03:31:12,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 03:31:12,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 03:31:12,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 03:31:12,937 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 03:31:12,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 03:31:12,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 03:31:12,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 03:31:12,938 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 03:31:12,938 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 03:31:12,938 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 03:31:12,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 03:31:12,939 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 03:31:12,939 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 03:31:13,209 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 03:31:13,222 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 03:31:13,226 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 03:31:13,227 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 03:31:13,228 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 03:31:13,228 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label10.c [2019-10-07 03:31:13,291 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c60facdaa/54e86c2e2b644576b5359015452bea55/FLAGb30b5a178 [2019-10-07 03:31:13,944 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 03:31:13,945 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label10.c [2019-10-07 03:31:13,965 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c60facdaa/54e86c2e2b644576b5359015452bea55/FLAGb30b5a178 [2019-10-07 03:31:14,085 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c60facdaa/54e86c2e2b644576b5359015452bea55 [2019-10-07 03:31:14,097 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 03:31:14,099 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 03:31:14,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 03:31:14,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 03:31:14,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 03:31:14,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:31:14" (1/1) ... [2019-10-07 03:31:14,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5370fc2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:31:14, skipping insertion in model container [2019-10-07 03:31:14,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:31:14" (1/1) ... [2019-10-07 03:31:14,116 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 03:31:14,205 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 03:31:15,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:31:15,157 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 03:31:15,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:31:15,409 INFO L192 MainTranslator]: Completed translation [2019-10-07 03:31:15,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:31:15 WrapperNode [2019-10-07 03:31:15,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 03:31:15,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 03:31:15,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 03:31:15,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 03:31:15,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:31:15" (1/1) ... [2019-10-07 03:31:15,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:31:15" (1/1) ... [2019-10-07 03:31:15,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:31:15" (1/1) ... [2019-10-07 03:31:15,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:31:15" (1/1) ... [2019-10-07 03:31:15,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:31:15" (1/1) ... [2019-10-07 03:31:15,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:31:15" (1/1) ... [2019-10-07 03:31:15,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:31:15" (1/1) ... [2019-10-07 03:31:15,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 03:31:15,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 03:31:15,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 03:31:15,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 03:31:15,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:31:15" (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 03:31:15,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 03:31:15,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 03:31:15,682 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 03:31:15,682 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-07 03:31:15,682 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 03:31:15,683 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 03:31:15,684 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-07 03:31:15,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 03:31:15,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 03:31:15,684 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 03:31:15,685 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 03:31:15,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 03:31:15,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 03:31:32,918 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 03:31:32,919 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 03:31:32,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:31:32 BoogieIcfgContainer [2019-10-07 03:31:32,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 03:31:32,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 03:31:32,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 03:31:32,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 03:31:32,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:31:14" (1/3) ... [2019-10-07 03:31:32,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a4e57d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:31:32, skipping insertion in model container [2019-10-07 03:31:32,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:31:15" (2/3) ... [2019-10-07 03:31:32,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a4e57d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:31:32, skipping insertion in model container [2019-10-07 03:31:32,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:31:32" (3/3) ... [2019-10-07 03:31:32,933 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label10.c [2019-10-07 03:31:32,945 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 03:31:32,953 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 03:31:32,965 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 03:31:32,994 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 03:31:32,994 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 03:31:32,994 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 03:31:32,995 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 03:31:32,995 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 03:31:32,995 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 03:31:32,995 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 03:31:32,995 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 03:31:33,020 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states. [2019-10-07 03:31:33,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 03:31:33,026 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:31:33,027 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:31:33,029 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:31:33,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:31:33,035 INFO L82 PathProgramCache]: Analyzing trace with hash 863561023, now seen corresponding path program 1 times [2019-10-07 03:31:33,044 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:31:33,045 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:33,045 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:33,045 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:33,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:31:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:31:33,273 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 03:31:33,273 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:33,274 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:31:33,274 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 03:31:33,278 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 03:31:33,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 03:31:33,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 03:31:33,296 INFO L87 Difference]: Start difference. First operand 244 states. Second operand 4 states. [2019-10-07 03:31:36,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:31:36,323 INFO L93 Difference]: Finished difference Result 953 states and 1852 transitions. [2019-10-07 03:31:36,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 03:31:36,326 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-07 03:31:36,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:31:36,368 INFO L225 Difference]: With dead ends: 953 [2019-10-07 03:31:36,368 INFO L226 Difference]: Without dead ends: 702 [2019-10-07 03:31:36,382 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 03:31:36,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2019-10-07 03:31:36,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 690. [2019-10-07 03:31:36,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2019-10-07 03:31:36,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1275 transitions. [2019-10-07 03:31:36,545 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1275 transitions. Word has length 11 [2019-10-07 03:31:36,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:31:36,546 INFO L462 AbstractCegarLoop]: Abstraction has 690 states and 1275 transitions. [2019-10-07 03:31:36,547 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 03:31:36,547 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1275 transitions. [2019-10-07 03:31:36,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-07 03:31:36,550 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:31:36,550 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:31:36,551 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:31:36,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:31:36,552 INFO L82 PathProgramCache]: Analyzing trace with hash -479429942, now seen corresponding path program 1 times [2019-10-07 03:31:36,553 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:31:36,553 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:36,553 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:36,553 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:36,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:31:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:31:36,731 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 03:31:36,731 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:36,731 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:31:36,732 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 03:31:36,733 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 03:31:36,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 03:31:36,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 03:31:36,734 INFO L87 Difference]: Start difference. First operand 690 states and 1275 transitions. Second operand 6 states. [2019-10-07 03:31:39,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:31:39,215 INFO L93 Difference]: Finished difference Result 2086 states and 3932 transitions. [2019-10-07 03:31:39,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 03:31:39,217 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-10-07 03:31:39,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:31:39,236 INFO L225 Difference]: With dead ends: 2086 [2019-10-07 03:31:39,236 INFO L226 Difference]: Without dead ends: 1401 [2019-10-07 03:31:39,239 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-07 03:31:39,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2019-10-07 03:31:39,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1372. [2019-10-07 03:31:39,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1372 states. [2019-10-07 03:31:39,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 2424 transitions. [2019-10-07 03:31:39,316 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 2424 transitions. Word has length 22 [2019-10-07 03:31:39,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:31:39,316 INFO L462 AbstractCegarLoop]: Abstraction has 1372 states and 2424 transitions. [2019-10-07 03:31:39,316 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 03:31:39,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 2424 transitions. [2019-10-07 03:31:39,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-07 03:31:39,321 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:31:39,321 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:31:39,322 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:31:39,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:31:39,322 INFO L82 PathProgramCache]: Analyzing trace with hash -222935776, now seen corresponding path program 1 times [2019-10-07 03:31:39,322 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:31:39,323 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:39,324 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:39,324 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:39,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:31:39,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:31:39,461 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 03:31:39,462 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:39,462 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:31:39,462 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 03:31:39,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:31:39,558 INFO L256 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 03:31:39,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:31:39,654 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 03:31:39,654 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:31:39,744 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 03:31:39,745 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 03:31:39,745 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2019-10-07 03:31:39,746 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 03:31:39,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 03:31:39,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-10-07 03:31:39,747 INFO L87 Difference]: Start difference. First operand 1372 states and 2424 transitions. Second operand 5 states. [2019-10-07 03:31:43,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:31:43,869 INFO L93 Difference]: Finished difference Result 3452 states and 6233 transitions. [2019-10-07 03:31:43,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 03:31:43,870 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2019-10-07 03:31:43,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:31:43,884 INFO L225 Difference]: With dead ends: 3452 [2019-10-07 03:31:43,885 INFO L226 Difference]: Without dead ends: 2085 [2019-10-07 03:31:43,889 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-10-07 03:31:43,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2085 states. [2019-10-07 03:31:43,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2085 to 2039. [2019-10-07 03:31:43,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2039 states. [2019-10-07 03:31:43,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2039 states to 2039 states and 3115 transitions. [2019-10-07 03:31:43,959 INFO L78 Accepts]: Start accepts. Automaton has 2039 states and 3115 transitions. Word has length 38 [2019-10-07 03:31:43,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:31:43,961 INFO L462 AbstractCegarLoop]: Abstraction has 2039 states and 3115 transitions. [2019-10-07 03:31:43,961 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 03:31:43,961 INFO L276 IsEmpty]: Start isEmpty. Operand 2039 states and 3115 transitions. [2019-10-07 03:31:43,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-07 03:31:43,971 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:31:43,972 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:31:44,180 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:31:44,181 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:31:44,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:31:44,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1814311334, now seen corresponding path program 1 times [2019-10-07 03:31:44,182 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:31:44,183 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:44,183 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:44,183 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:44,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:31:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:31:44,355 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 20 proven. 21 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-07 03:31:44,356 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:44,356 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:31:44,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:31:44,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:31:44,455 INFO L256 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 03:31:44,458 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:31:44,498 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 03:31:44,499 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:31:44,571 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 29 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-07 03:31:44,571 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 03:31:44,599 INFO L162 IcfgInterpreter]: Started Sifa with 39 locations of interest [2019-10-07 03:31:44,599 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 03:31:44,605 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 03:31:44,613 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 03:31:44,614 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 03:31:44,841 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 55 for LOIs [2019-10-07 03:31:44,928 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 26 [2019-10-07 03:31:45,040 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 26 [2019-10-07 03:31:45,187 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 35 [2019-10-07 03:31:45,321 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 35 [2019-10-07 03:31:45,726 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:31:45,727 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 03:31:45,734 INFO L168 Benchmark]: Toolchain (without parser) took 31634.26 ms. Allocated memory was 145.2 MB in the beginning and 488.1 MB in the end (delta: 342.9 MB). Free memory was 98.3 MB in the beginning and 290.6 MB in the end (delta: -192.3 MB). Peak memory consumption was 150.6 MB. Max. memory is 7.1 GB. [2019-10-07 03:31:45,736 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 03:31:45,737 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1311.46 ms. Allocated memory was 145.2 MB in the beginning and 225.4 MB in the end (delta: 80.2 MB). Free memory was 98.1 MB in the beginning and 170.3 MB in the end (delta: -72.2 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. [2019-10-07 03:31:45,743 INFO L168 Benchmark]: Boogie Preprocessor took 191.65 ms. Allocated memory is still 225.4 MB. Free memory was 170.3 MB in the beginning and 160.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-10-07 03:31:45,744 INFO L168 Benchmark]: RCFGBuilder took 17316.81 ms. Allocated memory was 225.4 MB in the beginning and 358.1 MB in the end (delta: 132.6 MB). Free memory was 160.2 MB in the beginning and 211.5 MB in the end (delta: -51.3 MB). Peak memory consumption was 215.7 MB. Max. memory is 7.1 GB. [2019-10-07 03:31:45,747 INFO L168 Benchmark]: TraceAbstraction took 12809.88 ms. Allocated memory was 358.1 MB in the beginning and 488.1 MB in the end (delta: 130.0 MB). Free memory was 211.5 MB in the beginning and 290.6 MB in the end (delta: -79.1 MB). Peak memory consumption was 51.0 MB. Max. memory is 7.1 GB. [2019-10-07 03:31:45,754 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1311.46 ms. Allocated memory was 145.2 MB in the beginning and 225.4 MB in the end (delta: 80.2 MB). Free memory was 98.1 MB in the beginning and 170.3 MB in the end (delta: -72.2 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 191.65 ms. Allocated memory is still 225.4 MB. Free memory was 170.3 MB in the beginning and 160.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17316.81 ms. Allocated memory was 225.4 MB in the beginning and 358.1 MB in the end (delta: 132.6 MB). Free memory was 160.2 MB in the beginning and 211.5 MB in the end (delta: -51.3 MB). Peak memory consumption was 215.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12809.88 ms. Allocated memory was 358.1 MB in the beginning and 488.1 MB in the end (delta: 130.0 MB). Free memory was 211.5 MB in the beginning and 290.6 MB in the end (delta: -79.1 MB). Peak memory consumption was 51.0 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...