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/Problem02_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:41:23,861 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:41:23,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:41:23,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-13 21:41:23,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:41:23,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:41:23,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:41:23,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:41:23,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:41:23,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:41:23,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:41:23,925 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:41:23,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:41:23,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:41:23,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:41:23,934 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:41:23,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:41:23,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:41:23,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:41:23,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:41:23,946 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 [2019-10-13 21:41:23,960 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:41:23,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:41:23,962 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:41:23,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:41:23,962 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:41:23,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:41:23,963 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:41:23,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:41:23,963 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:41:23,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:41:23,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:41:23,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:41:23,964 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:41:23,964 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:41:23,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:41:23,964 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:41:23,964 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:41:23,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:41:23,965 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:41:23,965 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:41:23,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:41:23,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:41:23,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:41:23,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:41:23,966 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:41:23,966 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:41:23,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:41:23,967 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:41:23,967 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 [2019-10-13 21:41:24,266 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:41:24,285 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:41:24,291 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:41:24,294 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:41:24,294 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:41:24,295 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label45.c [2019-10-13 21:41:24,380 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a260078a/4769144e12f748db95be8a5299951e5f/FLAG412462adc [2019-10-13 21:41:24,996 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:41:24,997 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label45.c [2019-10-13 21:41:25,009 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a260078a/4769144e12f748db95be8a5299951e5f/FLAG412462adc [2019-10-13 21:41:25,268 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a260078a/4769144e12f748db95be8a5299951e5f [2019-10-13 21:41:25,280 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:41:25,282 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:41:25,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:41:25,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:41:25,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:41:25,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:41:25" (1/1) ... [2019-10-13 21:41:25,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1168eabf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:25, skipping insertion in model container [2019-10-13 21:41:25,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:41:25" (1/1) ... [2019-10-13 21:41:25,304 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:41:25,359 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:41:25,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:41:25,884 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:41:25,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:41:26,015 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:41:26,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:26 WrapperNode [2019-10-13 21:41:26,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:41:26,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:41:26,017 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:41:26,017 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:41:26,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:26" (1/1) ... [2019-10-13 21:41:26,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:26" (1/1) ... [2019-10-13 21:41:26,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:26" (1/1) ... [2019-10-13 21:41:26,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:26" (1/1) ... [2019-10-13 21:41:26,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:26" (1/1) ... [2019-10-13 21:41:26,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:26" (1/1) ... [2019-10-13 21:41:26,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:26" (1/1) ... [2019-10-13 21:41:26,126 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:41:26,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:41:26,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:41:26,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:41:26,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:26" (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 [2019-10-13 21:41:26,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:41:26,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:41:26,198 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 21:41:26,198 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:41:26,198 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 21:41:26,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:41:26,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:41:26,199 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:41:26,199 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:41:26,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:41:26,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:41:28,245 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:41:28,246 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 21:41:28,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:41:28 BoogieIcfgContainer [2019-10-13 21:41:28,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:41:28,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:41:28,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:41:28,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:41:28,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:41:25" (1/3) ... [2019-10-13 21:41:28,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e5eba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:41:28, skipping insertion in model container [2019-10-13 21:41:28,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:26" (2/3) ... [2019-10-13 21:41:28,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e5eba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:41:28, skipping insertion in model container [2019-10-13 21:41:28,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:41:28" (3/3) ... [2019-10-13 21:41:28,257 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label45.c [2019-10-13 21:41:28,267 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:41:28,276 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:41:28,289 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:41:28,317 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:41:28,317 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:41:28,318 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:41:28,318 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:41:28,318 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:41:28,318 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:41:28,318 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:41:28,319 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:41:28,341 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2019-10-13 21:41:28,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-10-13 21:41:28,351 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:28,352 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:41:28,354 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:28,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:28,360 INFO L82 PathProgramCache]: Analyzing trace with hash -219486466, now seen corresponding path program 1 times [2019-10-13 21:41:28,370 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:28,370 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420384507] [2019-10-13 21:41:28,371 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:28,371 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:28,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:28,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:28,772 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420384507] [2019-10-13 21:41:28,773 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:41:28,774 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:41:28,774 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746250452] [2019-10-13 21:41:28,779 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:41:28,780 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:41:28,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:41:28,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:41:28,798 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 3 states. [2019-10-13 21:41:29,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:41:29,367 INFO L93 Difference]: Finished difference Result 273 states and 508 transitions. [2019-10-13 21:41:29,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:41:29,369 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2019-10-13 21:41:29,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:41:29,383 INFO L225 Difference]: With dead ends: 273 [2019-10-13 21:41:29,384 INFO L226 Difference]: Without dead ends: 175 [2019-10-13 21:41:29,388 INFO L600 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 [2019-10-13 21:41:29,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2019-10-13 21:41:29,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2019-10-13 21:41:29,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2019-10-13 21:41:29,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 312 transitions. [2019-10-13 21:41:29,475 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 312 transitions. Word has length 86 [2019-10-13 21:41:29,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:41:29,476 INFO L462 AbstractCegarLoop]: Abstraction has 175 states and 312 transitions. [2019-10-13 21:41:29,477 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:41:29,477 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 312 transitions. [2019-10-13 21:41:29,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-13 21:41:29,482 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:29,483 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:41:29,483 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:29,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:29,484 INFO L82 PathProgramCache]: Analyzing trace with hash -702021245, now seen corresponding path program 1 times [2019-10-13 21:41:29,484 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:29,484 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828777510] [2019-10-13 21:41:29,485 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:29,485 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:29,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:29,611 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:29,611 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828777510] [2019-10-13 21:41:29,612 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:41:29,612 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:41:29,612 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622953264] [2019-10-13 21:41:29,614 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:41:29,614 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:41:29,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:41:29,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:41:29,615 INFO L87 Difference]: Start difference. First operand 175 states and 312 transitions. Second operand 4 states. [2019-10-13 21:41:30,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:41:30,370 INFO L93 Difference]: Finished difference Result 681 states and 1261 transitions. [2019-10-13 21:41:30,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:41:30,371 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2019-10-13 21:41:30,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:41:30,379 INFO L225 Difference]: With dead ends: 681 [2019-10-13 21:41:30,379 INFO L226 Difference]: Without dead ends: 511 [2019-10-13 21:41:30,381 INFO L600 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 [2019-10-13 21:41:30,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2019-10-13 21:41:30,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 511. [2019-10-13 21:41:30,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2019-10-13 21:41:30,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 836 transitions. [2019-10-13 21:41:30,434 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 836 transitions. Word has length 94 [2019-10-13 21:41:30,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:41:30,435 INFO L462 AbstractCegarLoop]: Abstraction has 511 states and 836 transitions. [2019-10-13 21:41:30,435 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:41:30,435 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 836 transitions. [2019-10-13 21:41:30,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-13 21:41:30,445 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:30,445 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:41:30,446 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:30,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:30,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1307424922, now seen corresponding path program 1 times [2019-10-13 21:41:30,446 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:30,447 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957949382] [2019-10-13 21:41:30,447 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:30,447 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:30,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:30,534 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:30,534 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957949382] [2019-10-13 21:41:30,534 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:41:30,535 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:41:30,535 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471518985] [2019-10-13 21:41:30,536 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:41:30,536 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:41:30,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:41:30,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:41:30,537 INFO L87 Difference]: Start difference. First operand 511 states and 836 transitions. Second operand 6 states. [2019-10-13 21:41:31,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:41:31,301 INFO L93 Difference]: Finished difference Result 1237 states and 2158 transitions. [2019-10-13 21:41:31,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:41:31,301 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2019-10-13 21:41:31,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:41:31,313 INFO L225 Difference]: With dead ends: 1237 [2019-10-13 21:41:31,314 INFO L226 Difference]: Without dead ends: 731 [2019-10-13 21:41:31,319 INFO L600 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 [2019-10-13 21:41:31,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2019-10-13 21:41:31,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 703. [2019-10-13 21:41:31,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2019-10-13 21:41:31,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1139 transitions. [2019-10-13 21:41:31,389 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1139 transitions. Word has length 108 [2019-10-13 21:41:31,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:41:31,389 INFO L462 AbstractCegarLoop]: Abstraction has 703 states and 1139 transitions. [2019-10-13 21:41:31,389 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:41:31,390 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1139 transitions. [2019-10-13 21:41:31,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-13 21:41:31,395 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:31,396 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:41:31,396 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:31,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:31,396 INFO L82 PathProgramCache]: Analyzing trace with hash -650311126, now seen corresponding path program 1 times [2019-10-13 21:41:31,397 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:31,397 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894308758] [2019-10-13 21:41:31,397 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:31,397 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:31,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:31,696 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:31,697 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894308758] [2019-10-13 21:41:31,698 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:41:31,698 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:41:31,698 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928239647] [2019-10-13 21:41:31,700 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:41:31,700 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:41:31,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:41:31,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:41:31,701 INFO L87 Difference]: Start difference. First operand 703 states and 1139 transitions. Second operand 6 states. [2019-10-13 21:41:32,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:41:32,501 INFO L93 Difference]: Finished difference Result 1725 states and 2992 transitions. [2019-10-13 21:41:32,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:41:32,502 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2019-10-13 21:41:32,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:41:32,511 INFO L225 Difference]: With dead ends: 1725 [2019-10-13 21:41:32,511 INFO L226 Difference]: Without dead ends: 1027 [2019-10-13 21:41:32,516 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-10-13 21:41:32,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2019-10-13 21:41:32,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 997. [2019-10-13 21:41:32,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2019-10-13 21:41:32,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1484 transitions. [2019-10-13 21:41:32,583 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1484 transitions. Word has length 110 [2019-10-13 21:41:32,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:41:32,584 INFO L462 AbstractCegarLoop]: Abstraction has 997 states and 1484 transitions. [2019-10-13 21:41:32,584 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:41:32,584 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1484 transitions. [2019-10-13 21:41:32,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-13 21:41:32,589 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:32,589 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:41:32,590 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:32,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:32,590 INFO L82 PathProgramCache]: Analyzing trace with hash -72689956, now seen corresponding path program 1 times [2019-10-13 21:41:32,591 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:32,591 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553341631] [2019-10-13 21:41:32,591 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:32,591 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:32,592 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:32,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:32,771 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:32,771 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553341631] [2019-10-13 21:41:32,772 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:41:32,772 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:41:32,772 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085364326] [2019-10-13 21:41:32,773 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:41:32,773 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:41:32,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:41:32,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:41:32,774 INFO L87 Difference]: Start difference. First operand 997 states and 1484 transitions. Second operand 6 states. [2019-10-13 21:41:33,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:41:33,516 INFO L93 Difference]: Finished difference Result 2743 states and 4368 transitions. [2019-10-13 21:41:33,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:41:33,517 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2019-10-13 21:41:33,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:41:33,538 INFO L225 Difference]: With dead ends: 2743 [2019-10-13 21:41:33,538 INFO L226 Difference]: Without dead ends: 1751 [2019-10-13 21:41:33,545 INFO L600 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 [2019-10-13 21:41:33,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2019-10-13 21:41:33,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1711. [2019-10-13 21:41:33,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1711 states. [2019-10-13 21:41:33,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 2392 transitions. [2019-10-13 21:41:33,642 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 2392 transitions. Word has length 117 [2019-10-13 21:41:33,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:41:33,642 INFO L462 AbstractCegarLoop]: Abstraction has 1711 states and 2392 transitions. [2019-10-13 21:41:33,643 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:41:33,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 2392 transitions. [2019-10-13 21:41:33,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-13 21:41:33,653 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:33,654 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:41:33,654 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:33,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:33,655 INFO L82 PathProgramCache]: Analyzing trace with hash 5219257, now seen corresponding path program 1 times [2019-10-13 21:41:33,655 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:33,656 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324909993] [2019-10-13 21:41:33,656 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:33,656 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:33,657 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:33,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:33,853 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:33,853 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324909993] [2019-10-13 21:41:33,853 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183522910] [2019-10-13 21:41:33,854 INFO L94 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 [2019-10-13 21:41:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:33,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 21:41:33,980 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:41:34,080 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 21:41:34,081 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:41:34,218 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 21:41:34,218 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:41:34,219 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-10-13 21:41:34,219 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584903759] [2019-10-13 21:41:34,221 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:41:34,221 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:41:34,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:41:34,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:41:34,226 INFO L87 Difference]: Start difference. First operand 1711 states and 2392 transitions. Second operand 3 states. [2019-10-13 21:41:34,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:41:34,736 INFO L93 Difference]: Finished difference Result 4009 states and 5605 transitions. [2019-10-13 21:41:34,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:41:34,737 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2019-10-13 21:41:34,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:41:34,750 INFO L225 Difference]: With dead ends: 4009 [2019-10-13 21:41:34,750 INFO L226 Difference]: Without dead ends: 1521 [2019-10-13 21:41:34,758 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 244 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:41:34,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1521 states. [2019-10-13 21:41:34,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1521 to 1521. [2019-10-13 21:41:34,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1521 states. [2019-10-13 21:41:34,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 2002 transitions. [2019-10-13 21:41:34,858 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 2002 transitions. Word has length 121 [2019-10-13 21:41:34,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:41:34,860 INFO L462 AbstractCegarLoop]: Abstraction has 1521 states and 2002 transitions. [2019-10-13 21:41:34,860 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:41:34,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 2002 transitions. [2019-10-13 21:41:34,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-13 21:41:34,869 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:34,870 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:41:35,077 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:41:35,078 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:35,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:35,078 INFO L82 PathProgramCache]: Analyzing trace with hash 2015126325, now seen corresponding path program 1 times [2019-10-13 21:41:35,079 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:35,079 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014104368] [2019-10-13 21:41:35,079 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:35,079 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:35,080 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:35,191 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 78 proven. 28 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-13 21:41:35,192 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014104368] [2019-10-13 21:41:35,192 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780907432] [2019-10-13 21:41:35,193 INFO L94 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 [2019-10-13 21:41:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:35,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 21:41:35,324 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:41:35,356 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 21:41:35,356 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:41:35,458 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 78 proven. 28 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-13 21:41:35,459 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1825887651] [2019-10-13 21:41:35,510 INFO L162 IcfgInterpreter]: Started Sifa with 90 locations of interest [2019-10-13 21:41:35,511 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:41:35,523 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:41:35,535 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:41:35,535 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:41:35,815 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 89 for LOIs [2019-10-13 21:41:36,392 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:41:36,393 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:307) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) 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:102) 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:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) ... 21 more [2019-10-13 21:41:36,400 INFO L168 Benchmark]: Toolchain (without parser) took 11117.60 ms. Allocated memory was 144.2 MB in the beginning and 383.8 MB in the end (delta: 239.6 MB). Free memory was 100.7 MB in the beginning and 166.5 MB in the end (delta: -65.8 MB). Peak memory consumption was 173.8 MB. Max. memory is 7.1 GB. [2019-10-13 21:41:36,401 INFO L168 Benchmark]: CDTParser took 1.27 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 21:41:36,403 INFO L168 Benchmark]: CACSL2BoogieTranslator took 730.70 ms. Allocated memory was 144.2 MB in the beginning and 203.9 MB in the end (delta: 59.8 MB). Free memory was 100.5 MB in the beginning and 170.7 MB in the end (delta: -70.2 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. [2019-10-13 21:41:36,403 INFO L168 Benchmark]: Boogie Preprocessor took 109.77 ms. Allocated memory is still 203.9 MB. Free memory was 170.7 MB in the beginning and 165.7 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2019-10-13 21:41:36,404 INFO L168 Benchmark]: RCFGBuilder took 2120.49 ms. Allocated memory was 203.9 MB in the beginning and 252.7 MB in the end (delta: 48.8 MB). Free memory was 165.7 MB in the beginning and 196.4 MB in the end (delta: -30.7 MB). Peak memory consumption was 118.5 MB. Max. memory is 7.1 GB. [2019-10-13 21:41:36,405 INFO L168 Benchmark]: TraceAbstraction took 8149.16 ms. Allocated memory was 252.7 MB in the beginning and 383.8 MB in the end (delta: 131.1 MB). Free memory was 196.4 MB in the beginning and 166.5 MB in the end (delta: 29.9 MB). Peak memory consumption was 161.0 MB. Max. memory is 7.1 GB. [2019-10-13 21:41:36,409 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.27 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 730.70 ms. Allocated memory was 144.2 MB in the beginning and 203.9 MB in the end (delta: 59.8 MB). Free memory was 100.5 MB in the beginning and 170.7 MB in the end (delta: -70.2 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.77 ms. Allocated memory is still 203.9 MB. Free memory was 170.7 MB in the beginning and 165.7 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2120.49 ms. Allocated memory was 203.9 MB in the beginning and 252.7 MB in the end (delta: 48.8 MB). Free memory was 165.7 MB in the beginning and 196.4 MB in the end (delta: -30.7 MB). Peak memory consumption was 118.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8149.16 ms. Allocated memory was 252.7 MB in the beginning and 383.8 MB in the end (delta: 131.1 MB). Free memory was 196.4 MB in the beginning and 166.5 MB in the end (delta: 29.9 MB). Peak memory consumption was 161.0 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:307) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...