java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 03:30:56,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 03:30:56,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 03:30:56,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 03:30:56,181 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 03:30:56,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 03:30:56,186 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 03:30:56,195 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 03:30:56,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 03:30:56,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 03:30:56,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 03:30:56,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 03:30:56,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 03:30:56,208 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 03:30:56,210 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 03:30:56,211 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 03:30:56,212 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 03:30:56,213 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 03:30:56,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 03:30:56,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 03:30:56,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 03:30:56,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 03:30:56,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 03:30:56,230 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 03:30:56,234 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 03:30:56,234 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 03:30:56,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 03:30:56,237 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 03:30:56,238 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 03:30:56,239 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 03:30:56,240 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 03:30:56,240 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 03:30:56,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 03:30:56,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 03:30:56,244 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 03:30:56,244 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 03:30:56,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 03:30:56,245 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 03:30:56,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 03:30:56,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 03:30:56,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 03:30:56,248 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-07 03:30:56,279 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 03:30:56,279 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 03:30:56,285 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 03:30:56,286 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 03:30:56,286 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 03:30:56,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 03:30:56,286 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 03:30:56,286 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 03:30:56,287 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 03:30:56,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 03:30:56,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 03:30:56,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 03:30:56,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 03:30:56,288 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 03:30:56,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 03:30:56,288 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 03:30:56,288 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 03:30:56,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 03:30:56,289 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 03:30:56,289 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 03:30:56,289 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 03:30:56,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 03:30:56,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 03:30:56,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 03:30:56,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 03:30:56,290 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 03:30:56,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 03:30:56,290 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 03:30:56,291 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 03:30:56,592 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 03:30:56,611 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 03:30:56,615 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 03:30:56,616 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 03:30:56,617 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 03:30:56,618 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label56.c [2019-10-07 03:30:56,693 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53bc2dda2/3690ad150c59421784c8300408610eab/FLAGcddfcdf4f [2019-10-07 03:30:57,437 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 03:30:57,437 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label56.c [2019-10-07 03:30:57,457 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53bc2dda2/3690ad150c59421784c8300408610eab/FLAGcddfcdf4f [2019-10-07 03:30:57,570 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53bc2dda2/3690ad150c59421784c8300408610eab [2019-10-07 03:30:57,581 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 03:30:57,583 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 03:30:57,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 03:30:57,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 03:30:57,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 03:30:57,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:30:57" (1/1) ... [2019-10-07 03:30:57,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5420840d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:57, skipping insertion in model container [2019-10-07 03:30:57,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:30:57" (1/1) ... [2019-10-07 03:30:57,601 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 03:30:57,693 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 03:30:58,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:30:58,813 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 03:30:59,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:30:59,143 INFO L192 MainTranslator]: Completed translation [2019-10-07 03:30:59,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:59 WrapperNode [2019-10-07 03:30:59,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 03:30:59,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 03:30:59,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 03:30:59,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 03:30:59,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:59" (1/1) ... [2019-10-07 03:30:59,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:59" (1/1) ... [2019-10-07 03:30:59,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:59" (1/1) ... [2019-10-07 03:30:59,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:59" (1/1) ... [2019-10-07 03:30:59,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:59" (1/1) ... [2019-10-07 03:30:59,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:59" (1/1) ... [2019-10-07 03:30:59,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:59" (1/1) ... [2019-10-07 03:30:59,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 03:30:59,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 03:30:59,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 03:30:59,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 03:30:59,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 03:30:59,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 03:30:59,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 03:30:59,479 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 03:30:59,479 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-07 03:30:59,479 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 03:30:59,480 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 03:30:59,481 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-07 03:30:59,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 03:30:59,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 03:30:59,482 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 03:30:59,482 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 03:30:59,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 03:30:59,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 03:31:06,359 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 03:31:06,360 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 03:31:06,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:31:06 BoogieIcfgContainer [2019-10-07 03:31:06,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 03:31:06,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 03:31:06,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 03:31:06,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 03:31:06,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:30:57" (1/3) ... [2019-10-07 03:31:06,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59be8f43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:31:06, skipping insertion in model container [2019-10-07 03:31:06,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:59" (2/3) ... [2019-10-07 03:31:06,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59be8f43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:31:06, skipping insertion in model container [2019-10-07 03:31:06,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:31:06" (3/3) ... [2019-10-07 03:31:06,381 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label56.c [2019-10-07 03:31:06,395 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 03:31:06,406 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 03:31:06,415 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 03:31:06,445 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 03:31:06,446 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 03:31:06,446 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 03:31:06,446 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 03:31:06,446 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 03:31:06,447 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 03:31:06,447 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 03:31:06,447 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 03:31:06,481 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states. [2019-10-07 03:31:06,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 03:31:06,487 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:31:06,488 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:31:06,490 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:31:06,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:31:06,497 INFO L82 PathProgramCache]: Analyzing trace with hash 648047725, now seen corresponding path program 1 times [2019-10-07 03:31:06,506 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:31:06,507 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:06,507 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:06,507 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:06,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:31:06,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:31:06,812 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 03:31:06,813 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:06,813 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:31:06,814 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 03:31:06,818 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 03:31:06,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 03:31:06,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 03:31:06,835 INFO L87 Difference]: Start difference. First operand 244 states. Second operand 4 states. [2019-10-07 03:31:10,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:31:10,496 INFO L93 Difference]: Finished difference Result 953 states and 1850 transitions. [2019-10-07 03:31:10,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 03:31:10,499 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-07 03:31:10,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:31:10,534 INFO L225 Difference]: With dead ends: 953 [2019-10-07 03:31:10,534 INFO L226 Difference]: Without dead ends: 702 [2019-10-07 03:31:10,541 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 03:31:10,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2019-10-07 03:31:10,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 469. [2019-10-07 03:31:10,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2019-10-07 03:31:10,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 744 transitions. [2019-10-07 03:31:10,627 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 744 transitions. Word has length 11 [2019-10-07 03:31:10,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:31:10,628 INFO L462 AbstractCegarLoop]: Abstraction has 469 states and 744 transitions. [2019-10-07 03:31:10,628 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 03:31:10,628 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 744 transitions. [2019-10-07 03:31:10,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-07 03:31:10,630 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:31:10,630 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:31:10,631 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:31:10,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:31:10,631 INFO L82 PathProgramCache]: Analyzing trace with hash -954494715, now seen corresponding path program 1 times [2019-10-07 03:31:10,632 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:31:10,632 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:10,632 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:10,632 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:10,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:31:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:31:10,767 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 03:31:10,767 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:10,768 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:31:10,768 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 03:31:10,769 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 03:31:10,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 03:31:10,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 03:31:10,770 INFO L87 Difference]: Start difference. First operand 469 states and 744 transitions. Second operand 4 states. [2019-10-07 03:31:14,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:31:14,718 INFO L93 Difference]: Finished difference Result 1855 states and 2982 transitions. [2019-10-07 03:31:14,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 03:31:14,720 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2019-10-07 03:31:14,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:31:14,729 INFO L225 Difference]: With dead ends: 1855 [2019-10-07 03:31:14,729 INFO L226 Difference]: Without dead ends: 1391 [2019-10-07 03:31:14,732 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 03:31:14,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2019-10-07 03:31:14,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1376. [2019-10-07 03:31:14,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1376 states. [2019-10-07 03:31:14,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 1950 transitions. [2019-10-07 03:31:14,807 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 1950 transitions. Word has length 21 [2019-10-07 03:31:14,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:31:14,807 INFO L462 AbstractCegarLoop]: Abstraction has 1376 states and 1950 transitions. [2019-10-07 03:31:14,808 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 03:31:14,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 1950 transitions. [2019-10-07 03:31:14,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-10-07 03:31:14,810 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:31:14,811 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-07 03:31:14,811 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:31:14,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:31:14,811 INFO L82 PathProgramCache]: Analyzing trace with hash 174721792, now seen corresponding path program 1 times [2019-10-07 03:31:14,812 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:31:14,812 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:14,812 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:14,812 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:14,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:31:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:31:15,022 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-07 03:31:15,022 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:15,023 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:31:15,023 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 03:31:15,024 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 03:31:15,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 03:31:15,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-07 03:31:15,024 INFO L87 Difference]: Start difference. First operand 1376 states and 1950 transitions. Second operand 5 states. [2019-10-07 03:31:18,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:31:18,252 INFO L93 Difference]: Finished difference Result 3939 states and 5736 transitions. [2019-10-07 03:31:18,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 03:31:18,256 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2019-10-07 03:31:18,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:31:18,274 INFO L225 Difference]: With dead ends: 3939 [2019-10-07 03:31:18,274 INFO L226 Difference]: Without dead ends: 2568 [2019-10-07 03:31:18,278 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 03:31:18,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2019-10-07 03:31:18,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 1878. [2019-10-07 03:31:18,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1878 states. [2019-10-07 03:31:18,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2582 transitions. [2019-10-07 03:31:18,342 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2582 transitions. Word has length 67 [2019-10-07 03:31:18,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:31:18,343 INFO L462 AbstractCegarLoop]: Abstraction has 1878 states and 2582 transitions. [2019-10-07 03:31:18,343 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 03:31:18,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2582 transitions. [2019-10-07 03:31:18,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-10-07 03:31:18,350 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:31:18,351 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 03:31:18,351 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:31:18,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:31:18,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1857094137, now seen corresponding path program 1 times [2019-10-07 03:31:18,352 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:31:18,352 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:18,352 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:18,353 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:18,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:31:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:31:18,648 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-07 03:31:18,648 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:18,648 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:31:18,649 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 03:31:18,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:31:18,852 INFO L256 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 03:31:18,873 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:31:18,975 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-07 03:31:18,975 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:31:19,102 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-07 03:31:19,102 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 03:31:19,143 INFO L162 IcfgInterpreter]: Started Sifa with 148 locations of interest [2019-10-07 03:31:19,143 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 03:31:19,150 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 03:31:19,159 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 03:31:19,160 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 03:31:19,322 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 56 for LOIs [2019-10-07 03:31:19,667 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 27 [2019-10-07 03:31:20,022 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 27 [2019-10-07 03:31:20,345 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 34 [2019-10-07 03:31:20,542 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 7881 conjuctions. This might take some time... [2019-10-07 03:31:20,744 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 34 [2019-10-07 03:31:20,864 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 7881 conjuctions. This might take some time... [2019-10-07 03:31:21,327 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:31:21,329 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 03:31:21,336 INFO L168 Benchmark]: Toolchain (without parser) took 23751.16 ms. Allocated memory was 146.8 MB in the beginning and 547.4 MB in the end (delta: 400.6 MB). Free memory was 99.6 MB in the beginning and 166.5 MB in the end (delta: -66.9 MB). Peak memory consumption was 333.7 MB. Max. memory is 7.1 GB. [2019-10-07 03:31:21,337 INFO L168 Benchmark]: CDTParser took 1.24 ms. Allocated memory is still 146.8 MB. Free memory was 123.2 MB in the beginning and 123.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 03:31:21,338 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1559.39 ms. Allocated memory was 146.8 MB in the beginning and 230.2 MB in the end (delta: 83.4 MB). Free memory was 99.4 MB in the beginning and 159.2 MB in the end (delta: -59.8 MB). Peak memory consumption was 48.3 MB. Max. memory is 7.1 GB. [2019-10-07 03:31:21,339 INFO L168 Benchmark]: Boogie Preprocessor took 263.16 ms. Allocated memory is still 230.2 MB. Free memory was 159.2 MB in the beginning and 146.2 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2019-10-07 03:31:21,340 INFO L168 Benchmark]: RCFGBuilder took 6954.93 ms. Allocated memory was 230.2 MB in the beginning and 347.6 MB in the end (delta: 117.4 MB). Free memory was 146.2 MB in the beginning and 93.6 MB in the end (delta: 52.6 MB). Peak memory consumption was 170.1 MB. Max. memory is 7.1 GB. [2019-10-07 03:31:21,342 INFO L168 Benchmark]: TraceAbstraction took 14966.77 ms. Allocated memory was 347.6 MB in the beginning and 547.4 MB in the end (delta: 199.8 MB). Free memory was 93.6 MB in the beginning and 166.5 MB in the end (delta: -72.9 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2019-10-07 03:31:21,347 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.24 ms. Allocated memory is still 146.8 MB. Free memory was 123.2 MB in the beginning and 123.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1559.39 ms. Allocated memory was 146.8 MB in the beginning and 230.2 MB in the end (delta: 83.4 MB). Free memory was 99.4 MB in the beginning and 159.2 MB in the end (delta: -59.8 MB). Peak memory consumption was 48.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 263.16 ms. Allocated memory is still 230.2 MB. Free memory was 159.2 MB in the beginning and 146.2 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6954.93 ms. Allocated memory was 230.2 MB in the beginning and 347.6 MB in the end (delta: 117.4 MB). Free memory was 146.2 MB in the beginning and 93.6 MB in the end (delta: 52.6 MB). Peak memory consumption was 170.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14966.77 ms. Allocated memory was 347.6 MB in the beginning and 547.4 MB in the end (delta: 199.8 MB). Free memory was 93.6 MB in the beginning and 166.5 MB in the end (delta: -72.9 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true;: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...