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/Problem12_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 02:36:17,160 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 02:36:17,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 02:36:17,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 02:36:17,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 02:36:17,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 02:36:17,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 02:36:17,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 02:36:17,183 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 02:36:17,191 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 02:36:17,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 02:36:17,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 02:36:17,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 02:36:17,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 02:36:17,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 02:36:17,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 02:36:17,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 02:36:17,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 02:36:17,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 02:36:17,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 02:36:17,211 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 02:36:17,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 02:36:17,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 02:36:17,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 02:36:17,222 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 02:36:17,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 02:36:17,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 02:36:17,240 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 02:36:17,241 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 02:36:17,264 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 02:36:17,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 02:36:17,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 02:36:17,266 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 02:36:17,267 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 02:36:17,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 02:36:17,267 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 02:36:17,267 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 02:36:17,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 02:36:17,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 02:36:17,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 02:36:17,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 02:36:17,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 02:36:17,270 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 02:36:17,270 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 02:36:17,270 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 02:36:17,270 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 02:36:17,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 02:36:17,271 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 02:36:17,271 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 02:36:17,271 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 02:36:17,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 02:36:17,272 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 02:36:17,272 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 02:36:17,272 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 02:36:17,272 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 02:36:17,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 02:36:17,273 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 02:36:17,273 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 02:36:17,590 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 02:36:17,610 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 02:36:17,613 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 02:36:17,615 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 02:36:17,615 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 02:36:17,616 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label12.c [2019-10-07 02:36:17,692 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ff1bd652/e5400c35c1434d28a36bd968a27a88b9/FLAGb7ad01236 [2019-10-07 02:36:18,529 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 02:36:18,529 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label12.c [2019-10-07 02:36:18,575 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ff1bd652/e5400c35c1434d28a36bd968a27a88b9/FLAGb7ad01236 [2019-10-07 02:36:19,059 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ff1bd652/e5400c35c1434d28a36bd968a27a88b9 [2019-10-07 02:36:19,070 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 02:36:19,072 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 02:36:19,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 02:36:19,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 02:36:19,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 02:36:19,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:36:19" (1/1) ... [2019-10-07 02:36:19,084 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 02:36:19, skipping insertion in model container [2019-10-07 02:36:19,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:36:19" (1/1) ... [2019-10-07 02:36:19,092 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 02:36:19,229 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 02:36:20,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 02:36:20,741 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 02:36:21,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 02:36:21,429 INFO L192 MainTranslator]: Completed translation [2019-10-07 02:36:21,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:36:21 WrapperNode [2019-10-07 02:36:21,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 02:36:21,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 02:36:21,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 02:36:21,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 02:36:21,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:36:21" (1/1) ... [2019-10-07 02:36:21,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:36:21" (1/1) ... [2019-10-07 02:36:21,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:36:21" (1/1) ... [2019-10-07 02:36:21,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:36:21" (1/1) ... [2019-10-07 02:36:21,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:36:21" (1/1) ... [2019-10-07 02:36:21,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:36:21" (1/1) ... [2019-10-07 02:36:21,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:36:21" (1/1) ... [2019-10-07 02:36:21,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 02:36:21,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 02:36:21,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 02:36:21,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 02:36:21,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:36:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 02:36:21,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 02:36:21,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 02:36:21,780 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 02:36:21,780 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-07 02:36:21,780 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-07 02:36:21,780 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-07 02:36:21,781 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 02:36:21,781 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 02:36:21,781 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-07 02:36:21,781 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-07 02:36:21,781 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-07 02:36:21,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 02:36:21,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 02:36:21,782 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 02:36:21,782 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 02:36:21,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 02:36:21,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 02:36:29,021 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 02:36:29,021 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 02:36:29,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:36:29 BoogieIcfgContainer [2019-10-07 02:36:29,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 02:36:29,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 02:36:29,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 02:36:29,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 02:36:29,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:36:19" (1/3) ... [2019-10-07 02:36:29,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34fd3f2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:36:29, skipping insertion in model container [2019-10-07 02:36:29,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:36:21" (2/3) ... [2019-10-07 02:36:29,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34fd3f2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:36:29, skipping insertion in model container [2019-10-07 02:36:29,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:36:29" (3/3) ... [2019-10-07 02:36:29,033 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label12.c [2019-10-07 02:36:29,041 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 02:36:29,050 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 02:36:29,062 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 02:36:29,098 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 02:36:29,098 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 02:36:29,098 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 02:36:29,098 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 02:36:29,099 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 02:36:29,099 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 02:36:29,099 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 02:36:29,099 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 02:36:29,134 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states. [2019-10-07 02:36:29,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 02:36:29,140 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:36:29,141 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 02:36:29,143 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:36:29,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:36:29,150 INFO L82 PathProgramCache]: Analyzing trace with hash -874905266, now seen corresponding path program 1 times [2019-10-07 02:36:29,159 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:36:29,160 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:36:29,160 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:36:29,160 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:36:29,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:36:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:36:29,399 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 02:36:29,400 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:36:29,401 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 02:36:29,401 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 02:36:29,405 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 02:36:29,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 02:36:29,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 02:36:29,423 INFO L87 Difference]: Start difference. First operand 694 states. Second operand 3 states. [2019-10-07 02:36:34,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:36:34,370 INFO L93 Difference]: Finished difference Result 2068 states and 4065 transitions. [2019-10-07 02:36:34,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 02:36:34,372 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-10-07 02:36:34,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:36:34,403 INFO L225 Difference]: With dead ends: 2068 [2019-10-07 02:36:34,403 INFO L226 Difference]: Without dead ends: 1371 [2019-10-07 02:36:34,414 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 02:36:34,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2019-10-07 02:36:34,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1368. [2019-10-07 02:36:34,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1368 states. [2019-10-07 02:36:34,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 2530 transitions. [2019-10-07 02:36:34,554 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 2530 transitions. Word has length 11 [2019-10-07 02:36:34,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:36:34,554 INFO L462 AbstractCegarLoop]: Abstraction has 1368 states and 2530 transitions. [2019-10-07 02:36:34,554 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 02:36:34,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 2530 transitions. [2019-10-07 02:36:34,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-07 02:36:34,556 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:36:34,557 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 02:36:34,557 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:36:34,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:36:34,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1660861057, now seen corresponding path program 1 times [2019-10-07 02:36:34,558 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:36:34,558 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:36:34,558 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:36:34,559 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:36:34,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:36:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:36:34,750 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 02:36:34,750 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:36:34,750 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 02:36:34,751 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 02:36:34,753 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 02:36:34,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 02:36:34,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 02:36:34,754 INFO L87 Difference]: Start difference. First operand 1368 states and 2530 transitions. Second operand 5 states. [2019-10-07 02:36:41,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:36:41,873 INFO L93 Difference]: Finished difference Result 4145 states and 7711 transitions. [2019-10-07 02:36:41,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 02:36:41,879 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-10-07 02:36:41,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:36:41,901 INFO L225 Difference]: With dead ends: 4145 [2019-10-07 02:36:41,902 INFO L226 Difference]: Without dead ends: 2782 [2019-10-07 02:36:41,907 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-07 02:36:41,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2782 states. [2019-10-07 02:36:42,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2782 to 2758. [2019-10-07 02:36:42,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2758 states. [2019-10-07 02:36:42,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2758 states to 2758 states and 4886 transitions. [2019-10-07 02:36:42,017 INFO L78 Accepts]: Start accepts. Automaton has 2758 states and 4886 transitions. Word has length 25 [2019-10-07 02:36:42,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:36:42,017 INFO L462 AbstractCegarLoop]: Abstraction has 2758 states and 4886 transitions. [2019-10-07 02:36:42,017 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 02:36:42,018 INFO L276 IsEmpty]: Start isEmpty. Operand 2758 states and 4886 transitions. [2019-10-07 02:36:42,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-07 02:36:42,019 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:36:42,019 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 02:36:42,019 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:36:42,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:36:42,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1517908598, now seen corresponding path program 1 times [2019-10-07 02:36:42,020 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:36:42,020 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:36:42,021 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:36:42,021 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:36:42,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:36:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:36:42,101 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 02:36:42,102 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:36:42,102 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 02:36:42,102 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 02:36:42,103 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 02:36:42,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 02:36:42,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 02:36:42,104 INFO L87 Difference]: Start difference. First operand 2758 states and 4886 transitions. Second operand 6 states. [2019-10-07 02:36:48,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:36:48,877 INFO L93 Difference]: Finished difference Result 8359 states and 15059 transitions. [2019-10-07 02:36:48,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 02:36:48,878 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2019-10-07 02:36:48,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:36:48,912 INFO L225 Difference]: With dead ends: 8359 [2019-10-07 02:36:48,912 INFO L226 Difference]: Without dead ends: 5606 [2019-10-07 02:36:48,923 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 02:36:48,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5606 states. [2019-10-07 02:36:49,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5606 to 5517. [2019-10-07 02:36:49,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5517 states. [2019-10-07 02:36:49,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5517 states to 5517 states and 9733 transitions. [2019-10-07 02:36:49,160 INFO L78 Accepts]: Start accepts. Automaton has 5517 states and 9733 transitions. Word has length 30 [2019-10-07 02:36:49,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:36:49,161 INFO L462 AbstractCegarLoop]: Abstraction has 5517 states and 9733 transitions. [2019-10-07 02:36:49,161 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 02:36:49,161 INFO L276 IsEmpty]: Start isEmpty. Operand 5517 states and 9733 transitions. [2019-10-07 02:36:49,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-07 02:36:49,163 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:36:49,164 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 02:36:49,164 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:36:49,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:36:49,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1337883674, now seen corresponding path program 1 times [2019-10-07 02:36:49,165 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:36:49,165 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:36:49,165 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:36:49,166 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:36:49,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:36:49,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:36:49,333 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 02:36:49,334 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:36:49,334 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 02:36:49,334 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 02:36:49,335 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 02:36:49,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 02:36:49,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 02:36:49,337 INFO L87 Difference]: Start difference. First operand 5517 states and 9733 transitions. Second operand 6 states. [2019-10-07 02:36:55,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:36:55,467 INFO L93 Difference]: Finished difference Result 14605 states and 26408 transitions. [2019-10-07 02:36:55,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 02:36:55,468 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2019-10-07 02:36:55,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:36:55,526 INFO L225 Difference]: With dead ends: 14605 [2019-10-07 02:36:55,526 INFO L226 Difference]: Without dead ends: 9093 [2019-10-07 02:36:55,544 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 02:36:55,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9093 states. [2019-10-07 02:36:55,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9093 to 8976. [2019-10-07 02:36:55,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8976 states. [2019-10-07 02:36:55,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8976 states to 8976 states and 15455 transitions. [2019-10-07 02:36:55,813 INFO L78 Accepts]: Start accepts. Automaton has 8976 states and 15455 transitions. Word has length 38 [2019-10-07 02:36:55,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:36:55,814 INFO L462 AbstractCegarLoop]: Abstraction has 8976 states and 15455 transitions. [2019-10-07 02:36:55,814 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 02:36:55,814 INFO L276 IsEmpty]: Start isEmpty. Operand 8976 states and 15455 transitions. [2019-10-07 02:36:55,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-10-07 02:36:55,826 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:36:55,826 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-07 02:36:55,827 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:36:55,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:36:55,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1219037785, now seen corresponding path program 1 times [2019-10-07 02:36:55,827 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:36:55,828 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:36:55,828 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:36:55,828 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:36:55,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:36:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:36:55,991 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 02:36:55,991 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:36:55,992 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 02:36:55,992 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 02:36:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:36:56,115 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 02:36:56,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 02:36:56,200 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 02:36:56,201 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 02:36:56,408 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 02:36:56,408 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 02:36:56,437 INFO L162 IcfgInterpreter]: Started Sifa with 42 locations of interest [2019-10-07 02:36:56,437 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 02:36:56,443 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 02:36:56,452 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 02:36:56,452 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 02:36:56,665 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 59 for LOIs [2019-10-07 02:36:56,827 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 52 [2019-10-07 02:36:57,182 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 52 [2019-10-07 02:36:57,450 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2019-10-07 02:36:57,458 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2019-10-07 02:36:57,710 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 02:36:57,711 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 02:36:57,718 INFO L168 Benchmark]: Toolchain (without parser) took 38645.31 ms. Allocated memory was 144.2 MB in the beginning and 706.2 MB in the end (delta: 562.0 MB). Free memory was 88.7 MB in the beginning and 287.5 MB in the end (delta: -198.8 MB). Peak memory consumption was 363.3 MB. Max. memory is 7.1 GB. [2019-10-07 02:36:57,719 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 02:36:57,721 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2357.42 ms. Allocated memory was 144.2 MB in the beginning and 260.0 MB in the end (delta: 115.9 MB). Free memory was 88.5 MB in the beginning and 197.5 MB in the end (delta: -109.0 MB). Peak memory consumption was 117.9 MB. Max. memory is 7.1 GB. [2019-10-07 02:36:57,721 INFO L168 Benchmark]: Boogie Preprocessor took 291.49 ms. Allocated memory is still 260.0 MB. Free memory was 197.5 MB in the beginning and 170.2 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. [2019-10-07 02:36:57,723 INFO L168 Benchmark]: RCFGBuilder took 7300.85 ms. Allocated memory was 260.0 MB in the beginning and 404.8 MB in the end (delta: 144.7 MB). Free memory was 170.2 MB in the beginning and 302.2 MB in the end (delta: -132.0 MB). Peak memory consumption was 255.0 MB. Max. memory is 7.1 GB. [2019-10-07 02:36:57,724 INFO L168 Benchmark]: TraceAbstraction took 28690.65 ms. Allocated memory was 404.8 MB in the beginning and 706.2 MB in the end (delta: 301.5 MB). Free memory was 302.2 MB in the beginning and 287.5 MB in the end (delta: 14.8 MB). Peak memory consumption was 316.2 MB. Max. memory is 7.1 GB. [2019-10-07 02:36:57,728 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2357.42 ms. Allocated memory was 144.2 MB in the beginning and 260.0 MB in the end (delta: 115.9 MB). Free memory was 88.5 MB in the beginning and 197.5 MB in the end (delta: -109.0 MB). Peak memory consumption was 117.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 291.49 ms. Allocated memory is still 260.0 MB. Free memory was 197.5 MB in the beginning and 170.2 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7300.85 ms. Allocated memory was 260.0 MB in the beginning and 404.8 MB in the end (delta: 144.7 MB). Free memory was 170.2 MB in the beginning and 302.2 MB in the end (delta: -132.0 MB). Peak memory consumption was 255.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 28690.65 ms. Allocated memory was 404.8 MB in the beginning and 706.2 MB in the end (delta: 301.5 MB). Free memory was 302.2 MB in the beginning and 287.5 MB in the end (delta: 14.8 MB). Peak memory consumption was 316.2 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...