java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label49.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 02:44:49,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 02:44:49,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 02:44:49,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-07 02:44:49,809 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 02:44:49,812 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 02:44:49,814 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 02:44:49,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 02:44:49,817 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 02:44:49,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 02:44:49,821 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 02:44:49,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 02:44:49,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 02:44:49,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 02:44:49,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 02:44:49,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 02:44:49,836 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 02:44:49,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 02:44:49,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 02:44:49,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 02:44:49,855 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-07 02:44:49,871 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 02:44:49,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 02:44:49,873 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 02:44:49,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 02:44:49,876 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 02:44:49,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 02:44:49,877 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 02:44:49,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 02:44:49,877 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 02:44:49,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 02:44:49,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 02:44:49,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 02:44:49,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 02:44:49,878 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 02:44:49,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 02:44:49,879 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 02:44:49,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 02:44:49,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 02:44:49,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 02:44:49,881 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 02:44:49,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 02:44:49,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 02:44:49,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 02:44:49,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 02:44:49,882 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 02:44:49,883 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 02:44:49,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 02:44:49,883 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 02:44:49,883 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 02:44:50,175 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 02:44:50,189 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 02:44:50,193 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 02:44:50,194 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 02:44:50,195 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 02:44:50,195 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label49.c [2019-10-07 02:44:50,265 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a6a2a700/bf29d43510864064a5c8c466911b5740/FLAGcf6eadbc1 [2019-10-07 02:44:51,056 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 02:44:51,056 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label49.c [2019-10-07 02:44:51,085 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a6a2a700/bf29d43510864064a5c8c466911b5740/FLAGcf6eadbc1 [2019-10-07 02:44:51,148 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a6a2a700/bf29d43510864064a5c8c466911b5740 [2019-10-07 02:44:51,159 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 02:44:51,161 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 02:44:51,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 02:44:51,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 02:44:51,166 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 02:44:51,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:44:51" (1/1) ... [2019-10-07 02:44:51,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5efb01e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:44:51, skipping insertion in model container [2019-10-07 02:44:51,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:44:51" (1/1) ... [2019-10-07 02:44:51,179 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 02:44:51,322 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 02:44:53,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 02:44:53,165 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 02:44:53,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 02:44:53,805 INFO L192 MainTranslator]: Completed translation [2019-10-07 02:44:53,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:44:53 WrapperNode [2019-10-07 02:44:53,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 02:44:53,807 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 02:44:53,807 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 02:44:53,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 02:44:53,821 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:44:53" (1/1) ... [2019-10-07 02:44:53,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:44:53" (1/1) ... [2019-10-07 02:44:53,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:44:53" (1/1) ... [2019-10-07 02:44:53,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:44:53" (1/1) ... [2019-10-07 02:44:53,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:44:53" (1/1) ... [2019-10-07 02:44:54,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:44:53" (1/1) ... [2019-10-07 02:44:54,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:44:53" (1/1) ... [2019-10-07 02:44:54,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 02:44:54,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 02:44:54,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 02:44:54,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 02:44:54,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:44:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 02:44:54,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 02:44:54,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 02:44:54,165 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 02:44:54,166 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-07 02:44:54,166 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-07 02:44:54,166 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-07 02:44:54,166 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 02:44:54,166 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 02:44:54,167 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-07 02:44:54,167 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-07 02:44:54,167 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-07 02:44:54,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 02:44:54,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 02:44:54,168 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 02:44:54,168 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 02:44:54,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 02:44:54,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 02:45:00,902 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 02:45:00,902 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 02:45:00,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:45:00 BoogieIcfgContainer [2019-10-07 02:45:00,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 02:45:00,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 02:45:00,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 02:45:00,911 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 02:45:00,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:44:51" (1/3) ... [2019-10-07 02:45:00,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f94002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:45:00, skipping insertion in model container [2019-10-07 02:45:00,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:44:53" (2/3) ... [2019-10-07 02:45:00,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f94002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:45:00, skipping insertion in model container [2019-10-07 02:45:00,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:45:00" (3/3) ... [2019-10-07 02:45:00,916 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label49.c [2019-10-07 02:45:00,927 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 02:45:00,936 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 02:45:00,949 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 02:45:00,985 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 02:45:00,985 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 02:45:00,985 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 02:45:00,985 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 02:45:00,985 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 02:45:00,986 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 02:45:00,986 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 02:45:00,986 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 02:45:01,022 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states. [2019-10-07 02:45:01,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 02:45:01,028 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:45:01,029 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 02:45:01,032 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:45:01,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:45:01,038 INFO L82 PathProgramCache]: Analyzing trace with hash -874909362, now seen corresponding path program 1 times [2019-10-07 02:45:01,047 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:45:01,048 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:45:01,048 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:45:01,048 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:45:01,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:45:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:45:01,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 02:45:01,278 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:45:01,278 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 02:45:01,278 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 02:45:01,282 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 02:45:01,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 02:45:01,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 02:45:01,299 INFO L87 Difference]: Start difference. First operand 694 states. Second operand 3 states. [2019-10-07 02:45:06,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:45:06,398 INFO L93 Difference]: Finished difference Result 2068 states and 4065 transitions. [2019-10-07 02:45:06,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 02:45:06,400 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-10-07 02:45:06,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:45:06,429 INFO L225 Difference]: With dead ends: 2068 [2019-10-07 02:45:06,429 INFO L226 Difference]: Without dead ends: 1371 [2019-10-07 02:45:06,441 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 02:45:06,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2019-10-07 02:45:06,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1368. [2019-10-07 02:45:06,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1368 states. [2019-10-07 02:45:06,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 2635 transitions. [2019-10-07 02:45:06,586 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 2635 transitions. Word has length 11 [2019-10-07 02:45:06,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:45:06,590 INFO L462 AbstractCegarLoop]: Abstraction has 1368 states and 2635 transitions. [2019-10-07 02:45:06,590 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 02:45:06,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 2635 transitions. [2019-10-07 02:45:06,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-07 02:45:06,593 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:45:06,594 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 02:45:06,594 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:45:06,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:45:06,595 INFO L82 PathProgramCache]: Analyzing trace with hash 712278140, now seen corresponding path program 1 times [2019-10-07 02:45:06,596 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:45:06,596 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:45:06,596 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:45:06,597 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:45:06,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:45:06,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:45:06,786 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 02:45:06,789 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:45:06,790 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 02:45:06,790 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 02:45:06,793 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 02:45:06,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 02:45:06,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 02:45:06,794 INFO L87 Difference]: Start difference. First operand 1368 states and 2635 transitions. Second operand 6 states. [2019-10-07 02:45:13,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:45:13,269 INFO L93 Difference]: Finished difference Result 4146 states and 8031 transitions. [2019-10-07 02:45:13,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 02:45:13,279 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2019-10-07 02:45:13,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:45:13,295 INFO L225 Difference]: With dead ends: 4146 [2019-10-07 02:45:13,295 INFO L226 Difference]: Without dead ends: 2783 [2019-10-07 02:45:13,299 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-07 02:45:13,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2783 states. [2019-10-07 02:45:13,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2783 to 2736. [2019-10-07 02:45:13,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2736 states. [2019-10-07 02:45:13,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 4974 transitions. [2019-10-07 02:45:13,384 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 4974 transitions. Word has length 29 [2019-10-07 02:45:13,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:45:13,384 INFO L462 AbstractCegarLoop]: Abstraction has 2736 states and 4974 transitions. [2019-10-07 02:45:13,384 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 02:45:13,385 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 4974 transitions. [2019-10-07 02:45:13,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-07 02:45:13,386 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:45:13,386 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 02:45:13,387 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:45:13,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:45:13,387 INFO L82 PathProgramCache]: Analyzing trace with hash 727728687, now seen corresponding path program 1 times [2019-10-07 02:45:13,387 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:45:13,388 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:45:13,388 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:45:13,388 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:45:13,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:45:13,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:45:13,526 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 02:45:13,526 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:45:13,527 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 02:45:13,527 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 02:45:13,527 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 02:45:13,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 02:45:13,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 02:45:13,528 INFO L87 Difference]: Start difference. First operand 2736 states and 4974 transitions. Second operand 5 states. [2019-10-07 02:45:20,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:45:20,043 INFO L93 Difference]: Finished difference Result 8392 states and 15463 transitions. [2019-10-07 02:45:20,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 02:45:20,044 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2019-10-07 02:45:20,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:45:20,079 INFO L225 Difference]: With dead ends: 8392 [2019-10-07 02:45:20,079 INFO L226 Difference]: Without dead ends: 5661 [2019-10-07 02:45:20,087 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-07 02:45:20,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5661 states. [2019-10-07 02:45:20,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5661 to 5584. [2019-10-07 02:45:20,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5584 states. [2019-10-07 02:45:20,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5584 states to 5584 states and 9146 transitions. [2019-10-07 02:45:20,293 INFO L78 Accepts]: Start accepts. Automaton has 5584 states and 9146 transitions. Word has length 32 [2019-10-07 02:45:20,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:45:20,294 INFO L462 AbstractCegarLoop]: Abstraction has 5584 states and 9146 transitions. [2019-10-07 02:45:20,294 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 02:45:20,294 INFO L276 IsEmpty]: Start isEmpty. Operand 5584 states and 9146 transitions. [2019-10-07 02:45:20,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-07 02:45:20,304 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:45:20,304 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] [2019-10-07 02:45:20,305 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:45:20,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:45:20,306 INFO L82 PathProgramCache]: Analyzing trace with hash 739327865, now seen corresponding path program 1 times [2019-10-07 02:45:20,306 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:45:20,306 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:45:20,306 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:45:20,307 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:45:20,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:45:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:45:20,439 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 02:45:20,439 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:45:20,439 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 02:45:20,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 02:45:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:45:20,555 INFO L256 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 02:45:20,567 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 02:45:20,648 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 02:45:20,648 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 02:45:20,729 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 02:45:20,729 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 02:45:20,730 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2019-10-07 02:45:20,731 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 02:45:20,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 02:45:20,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-07 02:45:20,732 INFO L87 Difference]: Start difference. First operand 5584 states and 9146 transitions. Second operand 5 states. [2019-10-07 02:45:26,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:45:26,924 INFO L93 Difference]: Finished difference Result 14126 states and 23437 transitions. [2019-10-07 02:45:26,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 02:45:26,925 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2019-10-07 02:45:26,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:45:26,963 INFO L225 Difference]: With dead ends: 14126 [2019-10-07 02:45:26,964 INFO L226 Difference]: Without dead ends: 8547 [2019-10-07 02:45:26,977 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 87 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-10-07 02:45:26,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8547 states. [2019-10-07 02:45:27,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8547 to 8516. [2019-10-07 02:45:27,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8516 states. [2019-10-07 02:45:27,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8516 states to 8516 states and 13411 transitions. [2019-10-07 02:45:27,249 INFO L78 Accepts]: Start accepts. Automaton has 8516 states and 13411 transitions. Word has length 46 [2019-10-07 02:45:27,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:45:27,250 INFO L462 AbstractCegarLoop]: Abstraction has 8516 states and 13411 transitions. [2019-10-07 02:45:27,250 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 02:45:27,250 INFO L276 IsEmpty]: Start isEmpty. Operand 8516 states and 13411 transitions. [2019-10-07 02:45:27,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-10-07 02:45:27,252 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:45:27,252 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 02:45:27,459 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 02:45:27,460 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:45:27,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:45:27,460 INFO L82 PathProgramCache]: Analyzing trace with hash -2056323032, now seen corresponding path program 1 times [2019-10-07 02:45:27,460 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:45:27,461 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:45:27,461 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:45:27,463 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:45:27,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:45:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:45:27,615 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 02:45:27,615 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:45:27,615 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 02:45:27,615 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 02:45:27,616 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 02:45:27,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 02:45:27,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 02:45:27,617 INFO L87 Difference]: Start difference. First operand 8516 states and 13411 transitions. Second operand 5 states. [2019-10-07 02:45:34,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:45:34,914 INFO L93 Difference]: Finished difference Result 26257 states and 44571 transitions. [2019-10-07 02:45:34,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 02:45:34,914 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2019-10-07 02:45:34,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:45:34,982 INFO L225 Difference]: With dead ends: 26257 [2019-10-07 02:45:34,982 INFO L226 Difference]: Without dead ends: 17746 [2019-10-07 02:45:35,011 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-07 02:45:35,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17746 states. [2019-10-07 02:45:35,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17746 to 16749. [2019-10-07 02:45:35,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16749 states. [2019-10-07 02:45:35,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16749 states to 16749 states and 25104 transitions. [2019-10-07 02:45:35,524 INFO L78 Accepts]: Start accepts. Automaton has 16749 states and 25104 transitions. Word has length 55 [2019-10-07 02:45:35,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:45:35,526 INFO L462 AbstractCegarLoop]: Abstraction has 16749 states and 25104 transitions. [2019-10-07 02:45:35,526 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 02:45:35,526 INFO L276 IsEmpty]: Start isEmpty. Operand 16749 states and 25104 transitions. [2019-10-07 02:45:35,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-10-07 02:45:35,529 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:45:35,530 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-07 02:45:35,530 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:45:35,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:45:35,530 INFO L82 PathProgramCache]: Analyzing trace with hash -2008712631, now seen corresponding path program 1 times [2019-10-07 02:45:35,531 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:45:35,531 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:45:35,531 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:45:35,531 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:45:35,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:45:35,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:45:35,671 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 02:45:35,671 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:45:35,672 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 02:45:35,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 02:45:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:45:35,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 02:45:35,793 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 02:45:35,850 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 02:45:35,854 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 02:45:35,934 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 02:45:35,934 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 02:45:35,935 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2019-10-07 02:45:35,937 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 02:45:35,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 02:45:35,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-07 02:45:35,938 INFO L87 Difference]: Start difference. First operand 16749 states and 25104 transitions. Second operand 5 states. [2019-10-07 02:45:43,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:45:43,324 INFO L93 Difference]: Finished difference Result 43050 states and 69917 transitions. [2019-10-07 02:45:43,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 02:45:43,325 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2019-10-07 02:45:43,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:45:43,454 INFO L225 Difference]: With dead ends: 43050 [2019-10-07 02:45:43,454 INFO L226 Difference]: Without dead ends: 26306 [2019-10-07 02:45:43,498 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 166 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2019-10-07 02:45:43,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26306 states. [2019-10-07 02:45:45,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26306 to 25100. [2019-10-07 02:45:45,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25100 states. [2019-10-07 02:45:45,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25100 states to 25100 states and 39424 transitions. [2019-10-07 02:45:45,154 INFO L78 Accepts]: Start accepts. Automaton has 25100 states and 39424 transitions. Word has length 86 [2019-10-07 02:45:45,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:45:45,155 INFO L462 AbstractCegarLoop]: Abstraction has 25100 states and 39424 transitions. [2019-10-07 02:45:45,156 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 02:45:45,156 INFO L276 IsEmpty]: Start isEmpty. Operand 25100 states and 39424 transitions. [2019-10-07 02:45:45,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-07 02:45:45,158 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:45:45,158 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 02:45:45,362 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 02:45:45,362 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:45:45,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:45:45,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1776190725, now seen corresponding path program 1 times [2019-10-07 02:45:45,363 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:45:45,363 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:45:45,363 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:45:45,364 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:45:45,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:45:45,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:45:45,523 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 02:45:45,523 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:45:45,523 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 02:45:45,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 02:45:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:45:45,630 INFO L256 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 02:45:45,640 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 02:45:45,676 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 02:45:45,676 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 02:45:45,755 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 02:45:45,755 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 02:45:45,792 INFO L162 IcfgInterpreter]: Started Sifa with 72 locations of interest [2019-10-07 02:45:45,793 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 02:45:45,799 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 02:45:45,817 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 02:45:45,818 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 02:45:46,024 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 59 for LOIs [2019-10-07 02:45:46,196 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 36 [2019-10-07 02:45:46,380 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 36 [2019-10-07 02:45:46,522 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 25 [2019-10-07 02:45:46,598 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 25 [2019-10-07 02:45:46,945 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 02:45:46,946 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:178) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:169) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 02:45:46,953 INFO L168 Benchmark]: Toolchain (without parser) took 55791.32 ms. Allocated memory was 138.4 MB in the beginning and 988.3 MB in the end (delta: 849.9 MB). Free memory was 89.6 MB in the beginning and 300.4 MB in the end (delta: -210.8 MB). Peak memory consumption was 639.1 MB. Max. memory is 7.1 GB. [2019-10-07 02:45:46,954 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 02:45:46,955 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2644.52 ms. Allocated memory was 138.4 MB in the beginning and 257.9 MB in the end (delta: 119.5 MB). Free memory was 89.4 MB in the beginning and 175.4 MB in the end (delta: -86.0 MB). Peak memory consumption was 119.2 MB. Max. memory is 7.1 GB. [2019-10-07 02:45:46,955 INFO L168 Benchmark]: Boogie Preprocessor took 285.89 ms. Allocated memory is still 257.9 MB. Free memory was 175.4 MB in the beginning and 148.2 MB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2019-10-07 02:45:46,956 INFO L168 Benchmark]: RCFGBuilder took 6813.69 ms. Allocated memory was 257.9 MB in the beginning and 415.2 MB in the end (delta: 157.3 MB). Free memory was 148.2 MB in the beginning and 315.9 MB in the end (delta: -167.6 MB). Peak memory consumption was 261.2 MB. Max. memory is 7.1 GB. [2019-10-07 02:45:46,957 INFO L168 Benchmark]: TraceAbstraction took 46041.97 ms. Allocated memory was 415.2 MB in the beginning and 988.3 MB in the end (delta: 573.0 MB). Free memory was 315.9 MB in the beginning and 300.4 MB in the end (delta: 15.4 MB). Peak memory consumption was 588.5 MB. Max. memory is 7.1 GB. [2019-10-07 02:45:46,961 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2644.52 ms. Allocated memory was 138.4 MB in the beginning and 257.9 MB in the end (delta: 119.5 MB). Free memory was 89.4 MB in the beginning and 175.4 MB in the end (delta: -86.0 MB). Peak memory consumption was 119.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 285.89 ms. Allocated memory is still 257.9 MB. Free memory was 175.4 MB in the beginning and 148.2 MB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6813.69 ms. Allocated memory was 257.9 MB in the beginning and 415.2 MB in the end (delta: 157.3 MB). Free memory was 148.2 MB in the beginning and 315.9 MB in the end (delta: -167.6 MB). Peak memory consumption was 261.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 46041.97 ms. Allocated memory was 415.2 MB in the beginning and 988.3 MB in the end (delta: 573.0 MB). Free memory was 315.9 MB in the beginning and 300.4 MB in the end (delta: 15.4 MB). Peak memory consumption was 588.5 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...