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/Problem18_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 03:43:46,618 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-10-07 03:43:46,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 03:43:46,642 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 03:43:46,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 03:43:46,653 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 03:43:46,658 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 03:43:46,659 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 03:43:46,660 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 03:43:46,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 03:43:46,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 03:43:46,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 03:43:46,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 03:43:46,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 03:43:46,671 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 03:43:46,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 03:43:46,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 03:43:46,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 03:43:46,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 03:43:46,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 03:43:46,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 03:43:46,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 03:43:46,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 03:43:46,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 03:43:46,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 03:43:46,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 03:43:46,706 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-07 03:43:46,740 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 03:43:46,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 03:43:46,744 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 03:43:46,744 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 03:43:46,744 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 03:43:46,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 03:43:46,745 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 03:43:46,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 03:43:46,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 03:43:46,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 03:43:46,746 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 03:43:46,746 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 03:43:46,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 03:43:46,748 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 03:43:46,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 03:43:46,749 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 03:43:46,749 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 03:43:46,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 03:43:46,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 03:43:46,749 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 03:43:46,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 03:43:46,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 03:43:46,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 03:43:46,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 03:43:46,750 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 03:43:46,751 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 03:43:46,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 03:43:46,751 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 03:43:46,752 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 03:43:47,065 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 03:43:47,088 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 03:43:47,092 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 03:43:47,093 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 03:43:47,094 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 03:43:47,094 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label26.c [2019-10-07 03:43:47,162 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2c21343b/a2df726e07314c19ae9d32684a07a5c4/FLAGf4f7c4f89 [2019-10-07 03:43:47,917 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 03:43:47,918 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label26.c [2019-10-07 03:43:47,944 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2c21343b/a2df726e07314c19ae9d32684a07a5c4/FLAGf4f7c4f89 [2019-10-07 03:43:48,015 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2c21343b/a2df726e07314c19ae9d32684a07a5c4 [2019-10-07 03:43:48,026 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 03:43:48,027 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 03:43:48,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 03:43:48,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 03:43:48,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 03:43:48,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:43:48" (1/1) ... [2019-10-07 03:43:48,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f41ddf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:43:48, skipping insertion in model container [2019-10-07 03:43:48,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:43:48" (1/1) ... [2019-10-07 03:43:48,046 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 03:43:48,171 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 03:43:49,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:43:49,338 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 03:43:49,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:43:49,845 INFO L192 MainTranslator]: Completed translation [2019-10-07 03:43:49,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:43:49 WrapperNode [2019-10-07 03:43:49,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 03:43:49,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 03:43:49,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 03:43:49,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 03:43:49,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:43:49" (1/1) ... [2019-10-07 03:43:49,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:43:49" (1/1) ... [2019-10-07 03:43:49,914 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:43:49" (1/1) ... [2019-10-07 03:43:49,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:43:49" (1/1) ... [2019-10-07 03:43:50,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:43:49" (1/1) ... [2019-10-07 03:43:50,117 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:43:49" (1/1) ... [2019-10-07 03:43:50,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:43:49" (1/1) ... [2019-10-07 03:43:50,169 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 03:43:50,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 03:43:50,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 03:43:50,170 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 03:43:50,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:43:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 03:43:50,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 03:43:50,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 03:43:50,246 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 03:43:50,246 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-07 03:43:50,246 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-07 03:43:50,247 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 03:43:50,247 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 03:43:50,248 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-07 03:43:50,248 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-07 03:43:50,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 03:43:50,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 03:43:50,250 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 03:43:50,250 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 03:43:50,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 03:43:50,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 03:45:28,011 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 03:45:28,012 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 03:45:28,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:45:28 BoogieIcfgContainer [2019-10-07 03:45:28,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 03:45:28,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 03:45:28,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 03:45:28,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 03:45:28,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:43:48" (1/3) ... [2019-10-07 03:45:28,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d581c05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:45:28, skipping insertion in model container [2019-10-07 03:45:28,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:43:49" (2/3) ... [2019-10-07 03:45:28,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d581c05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:45:28, skipping insertion in model container [2019-10-07 03:45:28,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:45:28" (3/3) ... [2019-10-07 03:45:28,028 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label26.c [2019-10-07 03:45:28,038 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 03:45:28,047 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 03:45:28,059 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 03:45:28,091 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 03:45:28,091 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 03:45:28,091 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 03:45:28,091 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 03:45:28,092 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 03:45:28,092 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 03:45:28,092 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 03:45:28,092 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 03:45:28,349 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states. [2019-10-07 03:45:28,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 03:45:28,360 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:45:28,361 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:45:28,363 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:45:28,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:45:28,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1816949158, now seen corresponding path program 1 times [2019-10-07 03:45:28,384 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:45:28,384 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:45:28,384 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:45:28,384 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:45:28,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:45:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:45:28,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:45:28,646 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:45:28,646 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:45:28,647 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 03:45:28,653 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 03:45:28,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 03:45:28,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 03:45:28,675 INFO L87 Difference]: Start difference. First operand 469 states. Second operand 3 states. [2019-10-07 03:45:33,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:45:33,843 INFO L93 Difference]: Finished difference Result 1393 states and 2727 transitions. [2019-10-07 03:45:33,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 03:45:33,844 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-10-07 03:45:33,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:45:33,870 INFO L225 Difference]: With dead ends: 1393 [2019-10-07 03:45:33,870 INFO L226 Difference]: Without dead ends: 921 [2019-10-07 03:45:33,881 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 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 03:45:33,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2019-10-07 03:45:33,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 899. [2019-10-07 03:45:33,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2019-10-07 03:45:33,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1739 transitions. [2019-10-07 03:45:34,000 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1739 transitions. Word has length 11 [2019-10-07 03:45:34,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:45:34,001 INFO L462 AbstractCegarLoop]: Abstraction has 899 states and 1739 transitions. [2019-10-07 03:45:34,001 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 03:45:34,001 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1739 transitions. [2019-10-07 03:45:34,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-07 03:45:34,003 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:45:34,003 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 03:45:34,004 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:45:34,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:45:34,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1350876617, now seen corresponding path program 1 times [2019-10-07 03:45:34,004 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:45:34,005 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:45:34,005 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:45:34,005 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:45:34,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:45:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:45:34,145 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:45:34,145 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:45:34,145 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:45:34,146 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 03:45:34,152 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 03:45:34,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 03:45:34,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 03:45:34,153 INFO L87 Difference]: Start difference. First operand 899 states and 1739 transitions. Second operand 6 states. [2019-10-07 03:45:38,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:45:38,074 INFO L93 Difference]: Finished difference Result 2721 states and 5303 transitions. [2019-10-07 03:45:38,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 03:45:38,078 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2019-10-07 03:45:38,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:45:38,101 INFO L225 Difference]: With dead ends: 2721 [2019-10-07 03:45:38,101 INFO L226 Difference]: Without dead ends: 1827 [2019-10-07 03:45:38,109 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-07 03:45:38,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1827 states. [2019-10-07 03:45:38,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1827 to 1807. [2019-10-07 03:45:38,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1807 states. [2019-10-07 03:45:38,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1807 states to 1807 states and 3130 transitions. [2019-10-07 03:45:38,240 INFO L78 Accepts]: Start accepts. Automaton has 1807 states and 3130 transitions. Word has length 25 [2019-10-07 03:45:38,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:45:38,240 INFO L462 AbstractCegarLoop]: Abstraction has 1807 states and 3130 transitions. [2019-10-07 03:45:38,241 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 03:45:38,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1807 states and 3130 transitions. [2019-10-07 03:45:38,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-07 03:45:38,242 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:45:38,243 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] [2019-10-07 03:45:38,243 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:45:38,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:45:38,243 INFO L82 PathProgramCache]: Analyzing trace with hash 650473972, now seen corresponding path program 1 times [2019-10-07 03:45:38,244 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:45:38,244 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:45:38,244 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:45:38,244 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:45:38,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:45:38,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:45:38,338 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:45:38,338 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:45:38,338 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:45:38,339 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 03:45:38,339 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 03:45:38,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 03:45:38,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-07 03:45:38,340 INFO L87 Difference]: Start difference. First operand 1807 states and 3130 transitions. Second operand 6 states. [2019-10-07 03:45:45,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:45:45,515 INFO L93 Difference]: Finished difference Result 7360 states and 13455 transitions. [2019-10-07 03:45:45,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-07 03:45:45,516 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2019-10-07 03:45:45,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:45:45,563 INFO L225 Difference]: With dead ends: 7360 [2019-10-07 03:45:45,564 INFO L226 Difference]: Without dead ends: 5558 [2019-10-07 03:45:45,571 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-10-07 03:45:45,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5558 states. [2019-10-07 03:45:45,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5558 to 5365. [2019-10-07 03:45:45,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5365 states. [2019-10-07 03:45:45,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5365 states to 5365 states and 8490 transitions. [2019-10-07 03:45:45,816 INFO L78 Accepts]: Start accepts. Automaton has 5365 states and 8490 transitions. Word has length 28 [2019-10-07 03:45:45,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:45:45,816 INFO L462 AbstractCegarLoop]: Abstraction has 5365 states and 8490 transitions. [2019-10-07 03:45:45,816 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 03:45:45,816 INFO L276 IsEmpty]: Start isEmpty. Operand 5365 states and 8490 transitions. [2019-10-07 03:45:45,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-07 03:45:45,819 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:45:45,819 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:45:45,820 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:45:45,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:45:45,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1429472751, now seen corresponding path program 1 times [2019-10-07 03:45:45,820 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:45:45,821 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:45:45,821 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:45:45,821 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:45:45,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:45:45,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:45:45,945 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 03:45:45,946 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:45:45,946 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:45:45,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:45:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:45:46,043 INFO L256 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 03:45:46,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:45:46,134 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 03:45:46,134 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:45:46,228 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 03:45:46,229 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 03:45:46,229 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2019-10-07 03:45:46,230 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 03:45:46,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 03:45:46,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2019-10-07 03:45:46,232 INFO L87 Difference]: Start difference. First operand 5365 states and 8490 transitions. Second operand 5 states. [2019-10-07 03:45:49,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:45:49,979 INFO L93 Difference]: Finished difference Result 13497 states and 21501 transitions. [2019-10-07 03:45:49,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 03:45:49,981 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2019-10-07 03:45:49,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:45:50,020 INFO L225 Difference]: With dead ends: 13497 [2019-10-07 03:45:50,020 INFO L226 Difference]: Without dead ends: 8137 [2019-10-07 03:45:50,037 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-10-07 03:45:50,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8137 states. [2019-10-07 03:45:50,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8137 to 7829. [2019-10-07 03:45:50,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7829 states. [2019-10-07 03:45:50,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7829 states to 7829 states and 11771 transitions. [2019-10-07 03:45:50,271 INFO L78 Accepts]: Start accepts. Automaton has 7829 states and 11771 transitions. Word has length 38 [2019-10-07 03:45:50,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:45:50,271 INFO L462 AbstractCegarLoop]: Abstraction has 7829 states and 11771 transitions. [2019-10-07 03:45:50,271 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 03:45:50,272 INFO L276 IsEmpty]: Start isEmpty. Operand 7829 states and 11771 transitions. [2019-10-07 03:45:50,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-07 03:45:50,275 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:45:50,275 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] [2019-10-07 03:45:50,481 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:45:50,481 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:45:50,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:45:50,482 INFO L82 PathProgramCache]: Analyzing trace with hash -840152555, now seen corresponding path program 1 times [2019-10-07 03:45:50,482 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:45:50,482 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:45:50,482 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:45:50,483 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:45:50,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:45:50,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:45:50,669 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:45:50,669 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:45:50,669 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:45:50,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:45:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:45:50,774 INFO L256 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 03:45:50,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:45:50,827 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:45:50,828 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:45:50,890 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:45:50,891 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 03:45:50,941 INFO L162 IcfgInterpreter]: Started Sifa with 70 locations of interest [2019-10-07 03:45:50,942 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 03:45:50,948 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 03:45:50,958 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 03:45:50,959 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 03:45:51,172 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 51 for LOIs [2019-10-07 03:45:51,302 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 56 [2019-10-07 03:45:51,623 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 56 [2019-10-07 03:45:52,061 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:45:52,062 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:178) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:169) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 03:45:52,069 INFO L168 Benchmark]: Toolchain (without parser) took 124040.39 ms. Allocated memory was 139.5 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 94.3 MB in the beginning and 365.5 MB in the end (delta: -271.2 MB). Peak memory consumption was 864.4 MB. Max. memory is 7.1 GB. [2019-10-07 03:45:52,070 INFO L168 Benchmark]: CDTParser took 1.34 ms. Allocated memory is still 139.5 MB. Free memory was 122.7 MB in the beginning and 122.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 03:45:52,071 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1818.13 ms. Allocated memory was 139.5 MB in the beginning and 227.5 MB in the end (delta: 88.1 MB). Free memory was 94.1 MB in the beginning and 94.7 MB in the end (delta: -616.8 kB). Peak memory consumption was 93.9 MB. Max. memory is 7.1 GB. [2019-10-07 03:45:52,072 INFO L168 Benchmark]: Boogie Preprocessor took 322.16 ms. Allocated memory was 227.5 MB in the beginning and 254.8 MB in the end (delta: 27.3 MB). Free memory was 94.7 MB in the beginning and 200.0 MB in the end (delta: -105.3 MB). Peak memory consumption was 37.0 MB. Max. memory is 7.1 GB. [2019-10-07 03:45:52,073 INFO L168 Benchmark]: RCFGBuilder took 97844.72 ms. Allocated memory was 254.8 MB in the beginning and 1.1 GB in the end (delta: 805.8 MB). Free memory was 200.0 MB in the beginning and 233.3 MB in the end (delta: -33.3 MB). Peak memory consumption was 833.4 MB. Max. memory is 7.1 GB. [2019-10-07 03:45:52,074 INFO L168 Benchmark]: TraceAbstraction took 24050.75 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 214.4 MB). Free memory was 233.3 MB in the beginning and 365.5 MB in the end (delta: -132.2 MB). Peak memory consumption was 82.2 MB. Max. memory is 7.1 GB. [2019-10-07 03:45:52,078 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.34 ms. Allocated memory is still 139.5 MB. Free memory was 122.7 MB in the beginning and 122.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1818.13 ms. Allocated memory was 139.5 MB in the beginning and 227.5 MB in the end (delta: 88.1 MB). Free memory was 94.1 MB in the beginning and 94.7 MB in the end (delta: -616.8 kB). Peak memory consumption was 93.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 322.16 ms. Allocated memory was 227.5 MB in the beginning and 254.8 MB in the end (delta: 27.3 MB). Free memory was 94.7 MB in the beginning and 200.0 MB in the end (delta: -105.3 MB). Peak memory consumption was 37.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 97844.72 ms. Allocated memory was 254.8 MB in the beginning and 1.1 GB in the end (delta: 805.8 MB). Free memory was 200.0 MB in the beginning and 233.3 MB in the end (delta: -33.3 MB). Peak memory consumption was 833.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 24050.75 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 214.4 MB). Free memory was 233.3 MB in the beginning and 365.5 MB in the end (delta: -132.2 MB). Peak memory consumption was 82.2 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...