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_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 02:38:01,854 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 02:38:01,857 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 02:38:01,876 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 02:38:01,877 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 02:38:01,879 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 02:38:01,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 02:38:01,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 02:38:01,895 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 02:38:01,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 02:38:01,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 02:38:01,901 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 02:38:01,901 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 02:38:01,903 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 02:38:01,905 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 02:38:01,907 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 02:38:01,908 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 02:38:01,909 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 02:38:01,910 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 02:38:01,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 02:38:01,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 02:38:01,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 02:38:01,925 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 02:38:01,926 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 02:38:01,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 02:38:01,937 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 02:38:01,938 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 02:38:01,939 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 02:38:01,941 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 02:38:01,967 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 02:38:01,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 02:38:01,969 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 02:38:01,969 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 02:38:01,969 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 02:38:01,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 02:38:01,970 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 02:38:01,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 02:38:01,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 02:38:01,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 02:38:01,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 02:38:01,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 02:38:01,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 02:38:01,971 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 02:38:01,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 02:38:01,971 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 02:38:01,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 02:38:01,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 02:38:01,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 02:38:01,972 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 02:38:01,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 02:38:01,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 02:38:01,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 02:38:01,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 02:38:01,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 02:38:01,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 02:38:01,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 02:38:01,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 02:38:01,974 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 02:38:02,255 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 02:38:02,269 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 02:38:02,273 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 02:38:02,274 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 02:38:02,274 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 02:38:02,275 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label18.c [2019-10-07 02:38:02,359 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d966b02a0/088685ba67254d27802b21bce473155a/FLAGee73b4524 [2019-10-07 02:38:03,163 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 02:38:03,164 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label18.c [2019-10-07 02:38:03,199 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d966b02a0/088685ba67254d27802b21bce473155a/FLAGee73b4524 [2019-10-07 02:38:03,239 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d966b02a0/088685ba67254d27802b21bce473155a [2019-10-07 02:38:03,254 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 02:38:03,258 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 02:38:03,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 02:38:03,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 02:38:03,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 02:38:03,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:38:03" (1/1) ... [2019-10-07 02:38:03,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36edca5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:38:03, skipping insertion in model container [2019-10-07 02:38:03,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:38:03" (1/1) ... [2019-10-07 02:38:03,277 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 02:38:03,443 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 02:38:05,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 02:38:05,026 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 02:38:05,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 02:38:05,799 INFO L192 MainTranslator]: Completed translation [2019-10-07 02:38:05,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:38:05 WrapperNode [2019-10-07 02:38:05,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 02:38:05,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 02:38:05,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 02:38:05,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 02:38:05,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:38:05" (1/1) ... [2019-10-07 02:38:05,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:38:05" (1/1) ... [2019-10-07 02:38:05,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:38:05" (1/1) ... [2019-10-07 02:38:05,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:38:05" (1/1) ... [2019-10-07 02:38:05,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:38:05" (1/1) ... [2019-10-07 02:38:06,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:38:05" (1/1) ... [2019-10-07 02:38:06,081 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:38:05" (1/1) ... [2019-10-07 02:38:06,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 02:38:06,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 02:38:06,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 02:38:06,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 02:38:06,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:38:05" (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 02:38:06,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 02:38:06,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 02:38:06,234 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 02:38:06,234 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-07 02:38:06,234 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-07 02:38:06,235 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-07 02:38:06,235 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 02:38:06,235 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 02:38:06,235 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-07 02:38:06,236 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-07 02:38:06,236 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-07 02:38:06,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 02:38:06,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 02:38:06,237 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 02:38:06,237 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 02:38:06,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 02:38:06,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 02:38:13,507 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 02:38:13,507 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 02:38:13,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:38:13 BoogieIcfgContainer [2019-10-07 02:38:13,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 02:38:13,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 02:38:13,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 02:38:13,515 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 02:38:13,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:38:03" (1/3) ... [2019-10-07 02:38:13,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e936055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:38:13, skipping insertion in model container [2019-10-07 02:38:13,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:38:05" (2/3) ... [2019-10-07 02:38:13,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e936055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:38:13, skipping insertion in model container [2019-10-07 02:38:13,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:38:13" (3/3) ... [2019-10-07 02:38:13,519 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label18.c [2019-10-07 02:38:13,529 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 02:38:13,538 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 02:38:13,550 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 02:38:13,584 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 02:38:13,585 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 02:38:13,585 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 02:38:13,585 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 02:38:13,585 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 02:38:13,585 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 02:38:13,585 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 02:38:13,586 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 02:38:13,618 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states. [2019-10-07 02:38:13,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 02:38:13,624 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:38:13,625 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 02:38:13,627 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:38:13,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:38:13,633 INFO L82 PathProgramCache]: Analyzing trace with hash -874906546, now seen corresponding path program 1 times [2019-10-07 02:38:13,643 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:38:13,643 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:38:13,643 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:38:13,644 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:38:13,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:38:13,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:38:13,968 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 02:38:13,968 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:38:13,969 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 02:38:13,969 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 02:38:13,973 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 02:38:13,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 02:38:13,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 02:38:13,992 INFO L87 Difference]: Start difference. First operand 694 states. Second operand 3 states. [2019-10-07 02:38:18,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:38:18,737 INFO L93 Difference]: Finished difference Result 2068 states and 4065 transitions. [2019-10-07 02:38:18,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 02:38:18,738 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-10-07 02:38:18,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:38:18,769 INFO L225 Difference]: With dead ends: 2068 [2019-10-07 02:38:18,770 INFO L226 Difference]: Without dead ends: 1371 [2019-10-07 02:38:18,781 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 02:38:18,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2019-10-07 02:38:18,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1357. [2019-10-07 02:38:18,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1357 states. [2019-10-07 02:38:18,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 2576 transitions. [2019-10-07 02:38:18,927 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 2576 transitions. Word has length 11 [2019-10-07 02:38:18,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:38:18,928 INFO L462 AbstractCegarLoop]: Abstraction has 1357 states and 2576 transitions. [2019-10-07 02:38:18,928 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 02:38:18,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 2576 transitions. [2019-10-07 02:38:18,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-07 02:38:18,931 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:38:18,931 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 02:38:18,932 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:38:18,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:38:18,933 INFO L82 PathProgramCache]: Analyzing trace with hash 835078508, now seen corresponding path program 1 times [2019-10-07 02:38:18,933 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:38:18,933 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:38:18,934 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:38:18,934 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:38:18,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:38:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:38:19,107 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 02:38:19,109 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:38:19,110 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 02:38:19,110 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 02:38:19,112 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 02:38:19,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 02:38:19,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 02:38:19,115 INFO L87 Difference]: Start difference. First operand 1357 states and 2576 transitions. Second operand 5 states. [2019-10-07 02:38:25,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:38:25,487 INFO L93 Difference]: Finished difference Result 4103 states and 7818 transitions. [2019-10-07 02:38:25,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 02:38:25,494 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-10-07 02:38:25,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:38:25,514 INFO L225 Difference]: With dead ends: 4103 [2019-10-07 02:38:25,515 INFO L226 Difference]: Without dead ends: 2751 [2019-10-07 02:38:25,523 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 02:38:25,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2751 states. [2019-10-07 02:38:25,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2751 to 2739. [2019-10-07 02:38:25,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2739 states. [2019-10-07 02:38:25,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2739 states to 2739 states and 4960 transitions. [2019-10-07 02:38:25,643 INFO L78 Accepts]: Start accepts. Automaton has 2739 states and 4960 transitions. Word has length 25 [2019-10-07 02:38:25,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:38:25,644 INFO L462 AbstractCegarLoop]: Abstraction has 2739 states and 4960 transitions. [2019-10-07 02:38:25,644 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 02:38:25,644 INFO L276 IsEmpty]: Start isEmpty. Operand 2739 states and 4960 transitions. [2019-10-07 02:38:25,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-07 02:38:25,645 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:38:25,646 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] [2019-10-07 02:38:25,646 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:38:25,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:38:25,647 INFO L82 PathProgramCache]: Analyzing trace with hash 814130888, now seen corresponding path program 1 times [2019-10-07 02:38:25,647 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:38:25,648 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:38:25,649 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:38:25,649 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:38:25,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:38:25,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:38:25,759 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 02:38:25,760 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:38:25,760 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 02:38:25,761 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 02:38:25,761 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 02:38:25,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 02:38:25,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 02:38:25,762 INFO L87 Difference]: Start difference. First operand 2739 states and 4960 transitions. Second operand 4 states. [2019-10-07 02:38:33,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:38:33,003 INFO L93 Difference]: Finished difference Result 9592 states and 17474 transitions. [2019-10-07 02:38:33,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 02:38:33,003 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2019-10-07 02:38:33,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:38:33,045 INFO L225 Difference]: With dead ends: 9592 [2019-10-07 02:38:33,045 INFO L226 Difference]: Without dead ends: 6858 [2019-10-07 02:38:33,054 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 02:38:33,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6858 states. [2019-10-07 02:38:33,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6858 to 6826. [2019-10-07 02:38:33,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6826 states. [2019-10-07 02:38:33,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6826 states to 6826 states and 11779 transitions. [2019-10-07 02:38:33,251 INFO L78 Accepts]: Start accepts. Automaton has 6826 states and 11779 transitions. Word has length 27 [2019-10-07 02:38:33,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:38:33,252 INFO L462 AbstractCegarLoop]: Abstraction has 6826 states and 11779 transitions. [2019-10-07 02:38:33,252 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 02:38:33,252 INFO L276 IsEmpty]: Start isEmpty. Operand 6826 states and 11779 transitions. [2019-10-07 02:38:33,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-10-07 02:38:33,256 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:38:33,256 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 02:38:33,256 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:38:33,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:38:33,257 INFO L82 PathProgramCache]: Analyzing trace with hash -523306565, now seen corresponding path program 1 times [2019-10-07 02:38:33,257 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:38:33,258 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:38:33,258 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:38:33,258 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:38:33,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:38:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:38:33,387 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 02:38:33,388 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:38:33,388 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 02:38:33,388 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 02:38:33,389 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 02:38:33,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 02:38:33,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 02:38:33,390 INFO L87 Difference]: Start difference. First operand 6826 states and 11779 transitions. Second operand 6 states. [2019-10-07 02:38:39,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:38:39,530 INFO L93 Difference]: Finished difference Result 16476 states and 28764 transitions. [2019-10-07 02:38:39,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 02:38:39,537 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2019-10-07 02:38:39,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:38:39,586 INFO L225 Difference]: With dead ends: 16476 [2019-10-07 02:38:39,586 INFO L226 Difference]: Without dead ends: 9655 [2019-10-07 02:38:39,604 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 02:38:39,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9655 states. [2019-10-07 02:38:39,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9655 to 9603. [2019-10-07 02:38:39,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9603 states. [2019-10-07 02:38:39,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9603 states to 9603 states and 15935 transitions. [2019-10-07 02:38:39,886 INFO L78 Accepts]: Start accepts. Automaton has 9603 states and 15935 transitions. Word has length 54 [2019-10-07 02:38:39,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:38:39,888 INFO L462 AbstractCegarLoop]: Abstraction has 9603 states and 15935 transitions. [2019-10-07 02:38:39,888 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 02:38:39,888 INFO L276 IsEmpty]: Start isEmpty. Operand 9603 states and 15935 transitions. [2019-10-07 02:38:39,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-07 02:38:39,897 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:38:39,898 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-07 02:38:39,898 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:38:39,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:38:39,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1074505402, now seen corresponding path program 1 times [2019-10-07 02:38:39,899 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:38:39,899 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:38:39,899 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:38:39,900 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:38:39,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:38:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:38:40,053 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 02:38:40,053 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:38:40,054 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 02:38:40,054 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 02:38:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:38:40,157 INFO L256 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 02:38:40,167 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 02:38:40,273 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 02:38:40,273 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 02:38:40,394 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 02:38:40,395 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 02:38:40,395 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2019-10-07 02:38:40,396 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 02:38:40,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 02:38:40,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-10-07 02:38:40,398 INFO L87 Difference]: Start difference. First operand 9603 states and 15935 transitions. Second operand 5 states. [2019-10-07 02:38:47,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:38:47,816 INFO L93 Difference]: Finished difference Result 27772 states and 48452 transitions. [2019-10-07 02:38:47,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 02:38:47,817 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2019-10-07 02:38:47,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:38:47,947 INFO L225 Difference]: With dead ends: 27772 [2019-10-07 02:38:47,947 INFO L226 Difference]: Without dead ends: 18174 [2019-10-07 02:38:48,123 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2019-10-07 02:38:48,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18174 states. [2019-10-07 02:38:48,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18174 to 15888. [2019-10-07 02:38:48,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15888 states. [2019-10-07 02:38:48,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15888 states to 15888 states and 25062 transitions. [2019-10-07 02:38:48,661 INFO L78 Accepts]: Start accepts. Automaton has 15888 states and 25062 transitions. Word has length 57 [2019-10-07 02:38:48,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:38:48,661 INFO L462 AbstractCegarLoop]: Abstraction has 15888 states and 25062 transitions. [2019-10-07 02:38:48,662 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 02:38:48,662 INFO L276 IsEmpty]: Start isEmpty. Operand 15888 states and 25062 transitions. [2019-10-07 02:38:48,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-07 02:38:48,664 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:38:48,665 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 02:38:48,871 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 02:38:48,871 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:38:48,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:38:48,872 INFO L82 PathProgramCache]: Analyzing trace with hash 984489720, now seen corresponding path program 1 times [2019-10-07 02:38:48,872 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:38:48,872 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:38:48,873 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:38:48,873 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:38:48,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:38:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:38:48,946 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-07 02:38:48,947 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:38:48,947 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 02:38:48,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 02:38:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:38:49,069 INFO L256 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 02:38:49,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 02:38:49,113 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-07 02:38:49,116 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 02:38:49,190 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-07 02:38:49,191 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 02:38:49,191 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2019-10-07 02:38:49,192 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 02:38:49,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 02:38:49,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-07 02:38:49,193 INFO L87 Difference]: Start difference. First operand 15888 states and 25062 transitions. Second operand 5 states. [2019-10-07 02:38:56,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:38:56,166 INFO L93 Difference]: Finished difference Result 46429 states and 77151 transitions. [2019-10-07 02:38:56,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 02:38:56,167 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2019-10-07 02:38:56,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:38:56,334 INFO L225 Difference]: With dead ends: 46429 [2019-10-07 02:38:56,334 INFO L226 Difference]: Without dead ends: 30546 [2019-10-07 02:38:56,403 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-10-07 02:38:56,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30546 states. [2019-10-07 02:38:58,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30546 to 26823. [2019-10-07 02:38:58,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26823 states. [2019-10-07 02:38:58,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26823 states to 26823 states and 41454 transitions. [2019-10-07 02:38:58,356 INFO L78 Accepts]: Start accepts. Automaton has 26823 states and 41454 transitions. Word has length 77 [2019-10-07 02:38:58,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:38:58,356 INFO L462 AbstractCegarLoop]: Abstraction has 26823 states and 41454 transitions. [2019-10-07 02:38:58,356 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 02:38:58,356 INFO L276 IsEmpty]: Start isEmpty. Operand 26823 states and 41454 transitions. [2019-10-07 02:38:58,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-10-07 02:38:58,358 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:38:58,359 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 02:38:58,564 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 02:38:58,565 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:38:58,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:38:58,565 INFO L82 PathProgramCache]: Analyzing trace with hash -841130163, now seen corresponding path program 1 times [2019-10-07 02:38:58,565 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:38:58,566 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:38:58,566 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:38:58,566 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:38:58,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:38:58,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:38:58,736 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 02:38:58,736 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:38:58,736 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 02:38:58,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 02:38:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:38:58,843 INFO L256 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 02:38:58,847 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 02:38:58,908 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 02:38:58,909 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 02:38:58,982 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 02:38:58,982 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 02:38:58,982 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2019-10-07 02:38:58,983 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 02:38:58,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 02:38:58,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-10-07 02:38:58,984 INFO L87 Difference]: Start difference. First operand 26823 states and 41454 transitions. Second operand 5 states. [2019-10-07 02:39:06,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:39:06,484 INFO L93 Difference]: Finished difference Result 76985 states and 125670 transitions. [2019-10-07 02:39:06,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 02:39:06,484 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2019-10-07 02:39:06,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:39:06,690 INFO L225 Difference]: With dead ends: 76985 [2019-10-07 02:39:06,691 INFO L226 Difference]: Without dead ends: 50167 [2019-10-07 02:39:06,762 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 175 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2019-10-07 02:39:06,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50167 states. [2019-10-07 02:39:08,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50167 to 48553. [2019-10-07 02:39:08,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48553 states. [2019-10-07 02:39:08,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48553 states to 48553 states and 71913 transitions. [2019-10-07 02:39:08,189 INFO L78 Accepts]: Start accepts. Automaton has 48553 states and 71913 transitions. Word has length 90 [2019-10-07 02:39:08,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:39:08,192 INFO L462 AbstractCegarLoop]: Abstraction has 48553 states and 71913 transitions. [2019-10-07 02:39:08,192 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 02:39:08,192 INFO L276 IsEmpty]: Start isEmpty. Operand 48553 states and 71913 transitions. [2019-10-07 02:39:08,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-10-07 02:39:08,198 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:39:08,199 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 02:39:08,404 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 02:39:08,405 INFO L410 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:39:08,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:39:08,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1017773677, now seen corresponding path program 1 times [2019-10-07 02:39:08,406 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:39:08,406 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:39:08,406 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:39:08,406 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:39:08,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:39:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:39:08,608 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 33 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 02:39:08,608 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:39:08,608 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 02:39:08,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 02:39:08,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:39:08,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 02:39:08,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 02:39:08,805 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 02:39:08,806 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 02:39:08,895 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 33 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 02:39:08,895 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 02:39:08,941 INFO L162 IcfgInterpreter]: Started Sifa with 72 locations of interest [2019-10-07 02:39:08,942 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 02:39:08,954 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 02:39:08,965 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 02:39:08,966 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 02:39:09,130 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 57 for LOIs [2019-10-07 02:39:09,284 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 47 [2019-10-07 02:39:09,512 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 47 [2019-10-07 02:39:09,644 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 14 [2019-10-07 02:39:09,670 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 14 [2019-10-07 02:39:09,970 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 02:39:09,971 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 02:39:09,978 INFO L168 Benchmark]: Toolchain (without parser) took 66721.61 ms. Allocated memory was 144.2 MB in the beginning and 1.1 GB in the end (delta: 968.9 MB). Free memory was 87.4 MB in the beginning and 191.7 MB in the end (delta: -104.3 MB). Peak memory consumption was 864.6 MB. Max. memory is 7.1 GB. [2019-10-07 02:39:09,979 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 144.2 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 02:39:09,980 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2542.06 ms. Allocated memory was 144.2 MB in the beginning and 260.0 MB in the end (delta: 115.9 MB). Free memory was 87.2 MB in the beginning and 179.0 MB in the end (delta: -91.8 MB). Peak memory consumption was 113.3 MB. Max. memory is 7.1 GB. [2019-10-07 02:39:09,981 INFO L168 Benchmark]: Boogie Preprocessor took 350.03 ms. Allocated memory is still 260.0 MB. Free memory was 179.0 MB in the beginning and 151.3 MB in the end (delta: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. [2019-10-07 02:39:09,982 INFO L168 Benchmark]: RCFGBuilder took 7358.47 ms. Allocated memory was 260.0 MB in the beginning and 397.4 MB in the end (delta: 137.4 MB). Free memory was 151.3 MB in the beginning and 263.9 MB in the end (delta: -112.6 MB). Peak memory consumption was 221.7 MB. Max. memory is 7.1 GB. [2019-10-07 02:39:09,983 INFO L168 Benchmark]: TraceAbstraction took 56463.69 ms. Allocated memory was 397.4 MB in the beginning and 1.1 GB in the end (delta: 715.7 MB). Free memory was 263.9 MB in the beginning and 191.7 MB in the end (delta: 72.2 MB). Peak memory consumption was 787.9 MB. Max. memory is 7.1 GB. [2019-10-07 02:39:09,988 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 144.2 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2542.06 ms. Allocated memory was 144.2 MB in the beginning and 260.0 MB in the end (delta: 115.9 MB). Free memory was 87.2 MB in the beginning and 179.0 MB in the end (delta: -91.8 MB). Peak memory consumption was 113.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 350.03 ms. Allocated memory is still 260.0 MB. Free memory was 179.0 MB in the beginning and 151.3 MB in the end (delta: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7358.47 ms. Allocated memory was 260.0 MB in the beginning and 397.4 MB in the end (delta: 137.4 MB). Free memory was 151.3 MB in the beginning and 263.9 MB in the end (delta: -112.6 MB). Peak memory consumption was 221.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 56463.69 ms. Allocated memory was 397.4 MB in the beginning and 1.1 GB in the end (delta: 715.7 MB). Free memory was 263.9 MB in the beginning and 191.7 MB in the end (delta: 72.2 MB). Peak memory consumption was 787.9 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...