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/Problem01_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 00:55:35,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 00:55:35,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 00:55:35,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-07 00:55:35,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 00:55:35,197 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 00:55:35,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 00:55:35,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 00:55:35,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 00:55:35,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 00:55:35,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 00:55:35,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 00:55:35,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 00:55:35,207 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 00:55:35,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 00:55:35,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 00:55:35,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 00:55:35,228 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 00:55:35,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 00:55:35,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 00:55:35,233 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 00:55:35,259 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 00:55:35,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 00:55:35,260 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 00:55:35,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 00:55:35,261 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 00:55:35,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 00:55:35,261 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 00:55:35,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 00:55:35,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 00:55:35,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 00:55:35,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 00:55:35,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 00:55:35,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 00:55:35,264 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 00:55:35,264 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 00:55:35,264 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 00:55:35,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 00:55:35,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 00:55:35,265 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 00:55:35,265 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 00:55:35,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 00:55:35,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 00:55:35,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 00:55:35,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 00:55:35,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 00:55:35,267 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 00:55:35,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 00:55:35,267 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 00:55:35,267 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 00:55:35,550 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 00:55:35,564 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 00:55:35,567 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 00:55:35,569 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 00:55:35,569 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 00:55:35,570 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label15.c [2019-10-07 00:55:35,649 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d9ec0696/890c09c5c5034a17861ad3b7e7c7e6de/FLAG4d648ed5d [2019-10-07 00:55:36,237 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 00:55:36,238 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label15.c [2019-10-07 00:55:36,255 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d9ec0696/890c09c5c5034a17861ad3b7e7c7e6de/FLAG4d648ed5d [2019-10-07 00:55:36,477 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d9ec0696/890c09c5c5034a17861ad3b7e7c7e6de [2019-10-07 00:55:36,488 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 00:55:36,489 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 00:55:36,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 00:55:36,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 00:55:36,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 00:55:36,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:55:36" (1/1) ... [2019-10-07 00:55:36,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c679016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:55:36, skipping insertion in model container [2019-10-07 00:55:36,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:55:36" (1/1) ... [2019-10-07 00:55:36,506 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 00:55:36,568 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 00:55:37,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:55:37,107 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 00:55:37,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:55:37,382 INFO L192 MainTranslator]: Completed translation [2019-10-07 00:55:37,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:55:37 WrapperNode [2019-10-07 00:55:37,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 00:55:37,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 00:55:37,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 00:55:37,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 00:55:37,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:55:37" (1/1) ... [2019-10-07 00:55:37,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:55:37" (1/1) ... [2019-10-07 00:55:37,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:55:37" (1/1) ... [2019-10-07 00:55:37,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:55:37" (1/1) ... [2019-10-07 00:55:37,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:55:37" (1/1) ... [2019-10-07 00:55:37,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:55:37" (1/1) ... [2019-10-07 00:55:37,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:55:37" (1/1) ... [2019-10-07 00:55:37,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 00:55:37,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 00:55:37,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 00:55:37,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 00:55:37,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:55:37" (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 00:55:37,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 00:55:37,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 00:55:37,591 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 00:55:37,591 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 00:55:37,591 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 00:55:37,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 00:55:37,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 00:55:37,593 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 00:55:37,593 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 00:55:37,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 00:55:37,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 00:55:39,580 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 00:55:39,580 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 00:55:39,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:55:39 BoogieIcfgContainer [2019-10-07 00:55:39,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 00:55:39,583 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 00:55:39,583 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 00:55:39,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 00:55:39,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 12:55:36" (1/3) ... [2019-10-07 00:55:39,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@104025fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:55:39, skipping insertion in model container [2019-10-07 00:55:39,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:55:37" (2/3) ... [2019-10-07 00:55:39,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@104025fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:55:39, skipping insertion in model container [2019-10-07 00:55:39,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:55:39" (3/3) ... [2019-10-07 00:55:39,590 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label15.c [2019-10-07 00:55:39,601 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 00:55:39,610 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 00:55:39,621 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 00:55:39,648 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 00:55:39,649 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 00:55:39,649 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 00:55:39,649 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 00:55:39,649 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 00:55:39,649 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 00:55:39,649 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 00:55:39,650 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 00:55:39,671 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2019-10-07 00:55:39,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-07 00:55:39,681 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:55:39,682 INFO L385 BasicCegarLoop]: trace histogram [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, 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, 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 00:55:39,684 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:55:39,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:55:39,690 INFO L82 PathProgramCache]: Analyzing trace with hash 826810657, now seen corresponding path program 1 times [2019-10-07 00:55:39,699 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:55:39,700 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:55:39,700 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:55:39,700 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:55:39,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:55:39,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:55:40,252 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 00:55:40,253 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:55:40,253 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:55:40,254 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 00:55:40,259 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 00:55:40,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 00:55:40,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 00:55:40,277 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 4 states. [2019-10-07 00:55:40,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:55:40,924 INFO L93 Difference]: Finished difference Result 246 states and 454 transitions. [2019-10-07 00:55:40,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:55:40,928 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2019-10-07 00:55:40,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:55:40,953 INFO L225 Difference]: With dead ends: 246 [2019-10-07 00:55:40,954 INFO L226 Difference]: Without dead ends: 157 [2019-10-07 00:55:40,961 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 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 00:55:40,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2019-10-07 00:55:41,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2019-10-07 00:55:41,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2019-10-07 00:55:41,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 291 transitions. [2019-10-07 00:55:41,078 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 291 transitions. Word has length 77 [2019-10-07 00:55:41,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:55:41,080 INFO L462 AbstractCegarLoop]: Abstraction has 157 states and 291 transitions. [2019-10-07 00:55:41,080 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 00:55:41,081 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 291 transitions. [2019-10-07 00:55:41,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-07 00:55:41,089 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:55:41,090 INFO L385 BasicCegarLoop]: trace histogram [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, 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, 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, 1] [2019-10-07 00:55:41,090 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:55:41,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:55:41,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1195675976, now seen corresponding path program 1 times [2019-10-07 00:55:41,092 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:55:41,092 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:55:41,092 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:55:41,093 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:55:41,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:55:41,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:55:41,240 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:55:41,241 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:55:41,241 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:55:41,241 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 00:55:41,245 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 00:55:41,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 00:55:41,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 00:55:41,246 INFO L87 Difference]: Start difference. First operand 157 states and 291 transitions. Second operand 6 states. [2019-10-07 00:55:42,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:55:42,014 INFO L93 Difference]: Finished difference Result 402 states and 762 transitions. [2019-10-07 00:55:42,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 00:55:42,015 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2019-10-07 00:55:42,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:55:42,020 INFO L225 Difference]: With dead ends: 402 [2019-10-07 00:55:42,020 INFO L226 Difference]: Without dead ends: 250 [2019-10-07 00:55:42,022 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 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 00:55:42,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2019-10-07 00:55:42,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 236. [2019-10-07 00:55:42,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2019-10-07 00:55:42,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 428 transitions. [2019-10-07 00:55:42,044 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 428 transitions. Word has length 87 [2019-10-07 00:55:42,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:55:42,045 INFO L462 AbstractCegarLoop]: Abstraction has 236 states and 428 transitions. [2019-10-07 00:55:42,045 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 00:55:42,045 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 428 transitions. [2019-10-07 00:55:42,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-07 00:55:42,048 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:55:42,048 INFO L385 BasicCegarLoop]: trace histogram [2, 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, 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, 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 00:55:42,049 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:55:42,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:55:42,049 INFO L82 PathProgramCache]: Analyzing trace with hash -2128697580, now seen corresponding path program 1 times [2019-10-07 00:55:42,049 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:55:42,050 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:55:42,050 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:55:42,050 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:55:42,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:55:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:55:42,173 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:55:42,173 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:55:42,173 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:55:42,173 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 00:55:42,174 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 00:55:42,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 00:55:42,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 00:55:42,178 INFO L87 Difference]: Start difference. First operand 236 states and 428 transitions. Second operand 4 states. [2019-10-07 00:55:42,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:55:42,882 INFO L93 Difference]: Finished difference Result 844 states and 1592 transitions. [2019-10-07 00:55:42,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 00:55:42,884 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2019-10-07 00:55:42,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:55:42,890 INFO L225 Difference]: With dead ends: 844 [2019-10-07 00:55:42,890 INFO L226 Difference]: Without dead ends: 613 [2019-10-07 00:55:42,893 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 00:55:42,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2019-10-07 00:55:42,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 538. [2019-10-07 00:55:42,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2019-10-07 00:55:42,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 893 transitions. [2019-10-07 00:55:42,971 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 893 transitions. Word has length 88 [2019-10-07 00:55:42,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:55:42,974 INFO L462 AbstractCegarLoop]: Abstraction has 538 states and 893 transitions. [2019-10-07 00:55:42,974 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 00:55:42,974 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 893 transitions. [2019-10-07 00:55:42,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-10-07 00:55:42,987 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:55:42,988 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1] [2019-10-07 00:55:42,988 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:55:42,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:55:42,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1740727672, now seen corresponding path program 1 times [2019-10-07 00:55:42,991 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:55:42,991 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:55:42,991 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:55:42,992 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:55:42,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:55:43,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:55:43,251 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:55:43,252 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:55:43,252 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:55:43,252 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 00:55:43,254 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 00:55:43,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 00:55:43,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-07 00:55:43,255 INFO L87 Difference]: Start difference. First operand 538 states and 893 transitions. Second operand 6 states. [2019-10-07 00:55:43,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:55:43,969 INFO L93 Difference]: Finished difference Result 1251 states and 2103 transitions. [2019-10-07 00:55:43,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-07 00:55:43,970 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2019-10-07 00:55:43,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:55:43,974 INFO L225 Difference]: With dead ends: 1251 [2019-10-07 00:55:43,975 INFO L226 Difference]: Without dead ends: 639 [2019-10-07 00:55:43,978 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-10-07 00:55:43,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2019-10-07 00:55:44,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 473. [2019-10-07 00:55:44,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2019-10-07 00:55:44,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 769 transitions. [2019-10-07 00:55:44,007 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 769 transitions. Word has length 111 [2019-10-07 00:55:44,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:55:44,007 INFO L462 AbstractCegarLoop]: Abstraction has 473 states and 769 transitions. [2019-10-07 00:55:44,007 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 00:55:44,007 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 769 transitions. [2019-10-07 00:55:44,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-07 00:55:44,010 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:55:44,010 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1] [2019-10-07 00:55:44,011 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:55:44,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:55:44,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1376656453, now seen corresponding path program 1 times [2019-10-07 00:55:44,011 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:55:44,012 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:55:44,012 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:55:44,012 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:55:44,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:55:44,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:55:44,158 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:55:44,158 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:55:44,159 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:55:44,159 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 00:55:44,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:55:44,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-07 00:55:44,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:55:44,410 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:55:44,411 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:55:44,630 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2019-10-07 00:55:44,679 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 00:55:44,683 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 00:55:44,684 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 00:55:44,684 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 00:55:44,685 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 00:55:44,686 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 00:55:44,687 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 00:55:44,844 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:55:44,844 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:55:44,883 INFO L162 IcfgInterpreter]: Started Sifa with 81 locations of interest [2019-10-07 00:55:44,883 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:55:44,895 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:55:44,906 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:55:44,909 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:55:45,310 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 98 for LOIs [2019-10-07 00:55:45,834 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:55:45,835 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 00:55:45,841 INFO L168 Benchmark]: Toolchain (without parser) took 9350.96 ms. Allocated memory was 145.8 MB in the beginning and 327.7 MB in the end (delta: 181.9 MB). Free memory was 102.0 MB in the beginning and 242.8 MB in the end (delta: -140.8 MB). Peak memory consumption was 41.1 MB. Max. memory is 7.1 GB. [2019-10-07 00:55:45,842 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 145.8 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 00:55:45,843 INFO L168 Benchmark]: CACSL2BoogieTranslator took 892.98 ms. Allocated memory was 145.8 MB in the beginning and 206.0 MB in the end (delta: 60.3 MB). Free memory was 101.8 MB in the beginning and 172.8 MB in the end (delta: -71.0 MB). Peak memory consumption was 31.6 MB. Max. memory is 7.1 GB. [2019-10-07 00:55:45,844 INFO L168 Benchmark]: Boogie Preprocessor took 110.44 ms. Allocated memory is still 206.0 MB. Free memory was 172.8 MB in the beginning and 167.9 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2019-10-07 00:55:45,846 INFO L168 Benchmark]: RCFGBuilder took 2087.59 ms. Allocated memory was 206.0 MB in the beginning and 252.7 MB in the end (delta: 46.7 MB). Free memory was 167.2 MB in the beginning and 211.9 MB in the end (delta: -44.7 MB). Peak memory consumption was 118.2 MB. Max. memory is 7.1 GB. [2019-10-07 00:55:45,847 INFO L168 Benchmark]: TraceAbstraction took 6255.61 ms. Allocated memory was 252.7 MB in the beginning and 327.7 MB in the end (delta: 75.0 MB). Free memory was 211.9 MB in the beginning and 242.8 MB in the end (delta: -30.9 MB). Peak memory consumption was 44.1 MB. Max. memory is 7.1 GB. [2019-10-07 00:55:45,854 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 145.8 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 892.98 ms. Allocated memory was 145.8 MB in the beginning and 206.0 MB in the end (delta: 60.3 MB). Free memory was 101.8 MB in the beginning and 172.8 MB in the end (delta: -71.0 MB). Peak memory consumption was 31.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.44 ms. Allocated memory is still 206.0 MB. Free memory was 172.8 MB in the beginning and 167.9 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2087.59 ms. Allocated memory was 206.0 MB in the beginning and 252.7 MB in the end (delta: 46.7 MB). Free memory was 167.2 MB in the beginning and 211.9 MB in the end (delta: -44.7 MB). Peak memory consumption was 118.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6255.61 ms. Allocated memory was 252.7 MB in the beginning and 327.7 MB in the end (delta: 75.0 MB). Free memory was 211.9 MB in the beginning and 242.8 MB in the end (delta: -30.9 MB). Peak memory consumption was 44.1 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...