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/Problem15_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:52:42,883 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:52:42,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:52:42,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:52:42,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:52:42,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:52:42,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:52:42,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:52:42,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:52:42,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:52:42,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:52:42,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:52:42,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:52:42,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:52:42,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:52:42,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:52:42,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:52:42,911 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:52:42,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:52:42,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:52:42,917 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:52:42,918 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:52:42,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:52:42,920 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:52:42,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:52:42,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:52:42,930 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:52:42,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:52:42,932 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 21:52:42,951 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:52:42,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:52:42,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:52:42,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:52:42,953 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:52:42,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:52:42,954 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:52:42,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:52:42,954 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:52:42,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:52:42,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:52:42,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:52:42,955 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:52:42,956 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:52:42,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:52:42,956 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:52:42,956 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:52:42,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:52:42,957 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:52:42,957 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:52:42,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:52:42,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:52:42,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:52:42,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:52:42,958 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:52:42,959 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:52:42,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:52:42,959 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:52:42,959 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 21:52:43,220 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:52:43,240 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:52:43,244 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:52:43,245 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:52:43,245 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:52:43,246 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label44.c [2019-10-13 21:52:43,316 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a1c86f67/a30938e08482415fbf5264e546957ec3/FLAGf5c41f8ad [2019-10-13 21:52:44,030 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:52:44,032 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label44.c [2019-10-13 21:52:44,051 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a1c86f67/a30938e08482415fbf5264e546957ec3/FLAGf5c41f8ad [2019-10-13 21:52:44,203 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a1c86f67/a30938e08482415fbf5264e546957ec3 [2019-10-13 21:52:44,212 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:52:44,214 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:52:44,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:52:44,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:52:44,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:52:44,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:52:44" (1/1) ... [2019-10-13 21:52:44,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@397df160 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:44, skipping insertion in model container [2019-10-13 21:52:44,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:52:44" (1/1) ... [2019-10-13 21:52:44,228 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:52:44,308 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:52:45,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:52:45,149 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:52:45,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:52:45,656 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:52:45,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:45 WrapperNode [2019-10-13 21:52:45,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:52:45,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:52:45,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:52:45,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:52:45,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:45" (1/1) ... [2019-10-13 21:52:45,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:45" (1/1) ... [2019-10-13 21:52:45,720 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:45" (1/1) ... [2019-10-13 21:52:45,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:45" (1/1) ... [2019-10-13 21:52:45,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:45" (1/1) ... [2019-10-13 21:52:45,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:45" (1/1) ... [2019-10-13 21:52:45,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:45" (1/1) ... [2019-10-13 21:52:45,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:52:45,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:52:45,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:52:45,902 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:52:45,903 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:45" (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 21:52:45,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:52:45,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:52:45,968 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 21:52:45,968 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 21:52:45,968 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:52:45,969 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 21:52:45,970 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 21:52:45,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:52:45,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:52:45,971 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:52:45,971 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:52:45,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:52:45,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:52:56,092 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:52:56,092 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 21:52:56,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:52:56 BoogieIcfgContainer [2019-10-13 21:52:56,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:52:56,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:52:56,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:52:56,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:52:56,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:52:44" (1/3) ... [2019-10-13 21:52:56,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f737bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:52:56, skipping insertion in model container [2019-10-13 21:52:56,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:45" (2/3) ... [2019-10-13 21:52:56,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f737bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:52:56, skipping insertion in model container [2019-10-13 21:52:56,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:52:56" (3/3) ... [2019-10-13 21:52:56,103 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label44.c [2019-10-13 21:52:56,115 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:52:56,125 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:52:56,136 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:52:56,171 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:52:56,172 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:52:56,172 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:52:56,172 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:52:56,172 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:52:56,172 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:52:56,172 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:52:56,172 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:52:56,202 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states. [2019-10-13 21:52:56,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-13 21:52:56,211 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:52:56,211 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:52:56,213 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:52:56,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:52:56,219 INFO L82 PathProgramCache]: Analyzing trace with hash 648057134, now seen corresponding path program 1 times [2019-10-13 21:52:56,228 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:52:56,228 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969501521] [2019-10-13 21:52:56,228 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:52:56,228 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:52:56,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:52:56,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:52:56,513 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 21:52:56,515 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969501521] [2019-10-13 21:52:56,516 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:52:56,516 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:52:56,516 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671072719] [2019-10-13 21:52:56,521 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:52:56,522 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:52:56,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:52:56,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:52:56,539 INFO L87 Difference]: Start difference. First operand 243 states. Second operand 4 states. [2019-10-13 21:53:00,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:53:00,458 INFO L93 Difference]: Finished difference Result 949 states and 1846 transitions. [2019-10-13 21:53:00,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:53:00,460 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-13 21:53:00,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:53:00,536 INFO L225 Difference]: With dead ends: 949 [2019-10-13 21:53:00,536 INFO L226 Difference]: Without dead ends: 699 [2019-10-13 21:53:00,549 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 21:53:00,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2019-10-13 21:53:00,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 467. [2019-10-13 21:53:00,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2019-10-13 21:53:00,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 742 transitions. [2019-10-13 21:53:00,647 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 742 transitions. Word has length 11 [2019-10-13 21:53:00,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:53:00,647 INFO L462 AbstractCegarLoop]: Abstraction has 467 states and 742 transitions. [2019-10-13 21:53:00,647 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:53:00,647 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 742 transitions. [2019-10-13 21:53:00,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-13 21:53:00,649 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:53:00,649 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:53:00,650 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:53:00,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:53:00,650 INFO L82 PathProgramCache]: Analyzing trace with hash 2085380344, now seen corresponding path program 1 times [2019-10-13 21:53:00,650 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:53:00,651 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252977704] [2019-10-13 21:53:00,651 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:53:00,651 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:53:00,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:53:00,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:53:00,761 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 21:53:00,761 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252977704] [2019-10-13 21:53:00,762 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:53:00,762 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:53:00,762 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345294315] [2019-10-13 21:53:00,764 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:53:00,764 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:53:00,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:53:00,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:53:00,765 INFO L87 Difference]: Start difference. First operand 467 states and 742 transitions. Second operand 4 states. [2019-10-13 21:53:04,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:53:04,059 INFO L93 Difference]: Finished difference Result 1847 states and 2973 transitions. [2019-10-13 21:53:04,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:53:04,060 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2019-10-13 21:53:04,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:53:04,070 INFO L225 Difference]: With dead ends: 1847 [2019-10-13 21:53:04,070 INFO L226 Difference]: Without dead ends: 1385 [2019-10-13 21:53:04,072 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 21:53:04,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2019-10-13 21:53:04,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 1142. [2019-10-13 21:53:04,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1142 states. [2019-10-13 21:53:04,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1673 transitions. [2019-10-13 21:53:04,118 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1673 transitions. Word has length 20 [2019-10-13 21:53:04,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:53:04,119 INFO L462 AbstractCegarLoop]: Abstraction has 1142 states and 1673 transitions. [2019-10-13 21:53:04,119 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:53:04,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1673 transitions. [2019-10-13 21:53:04,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-10-13 21:53:04,123 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:53:04,123 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:53:04,124 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:53:04,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:53:04,124 INFO L82 PathProgramCache]: Analyzing trace with hash -543778070, now seen corresponding path program 1 times [2019-10-13 21:53:04,124 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:53:04,125 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892331462] [2019-10-13 21:53:04,125 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:53:04,125 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:53:04,125 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:53:04,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:53:04,321 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 22 proven. 36 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 21:53:04,322 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892331462] [2019-10-13 21:53:04,322 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977629192] [2019-10-13 21:53:04,322 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 21:53:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:53:04,460 INFO L256 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-13 21:53:04,471 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:53:04,580 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:53:04,581 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:53:04,784 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 23 proven. 51 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 21:53:04,785 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1169262011] [2019-10-13 21:53:04,844 INFO L162 IcfgInterpreter]: Started Sifa with 42 locations of interest [2019-10-13 21:53:04,844 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:53:04,850 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:53:04,866 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:53:04,867 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:53:05,113 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 58 for LOIs [2019-10-13 21:53:05,266 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 60 [2019-10-13 21:53:05,833 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 7389 conjuctions. This might take some time... [2019-10-13 21:53:05,908 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 60 [2019-10-13 21:53:06,312 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 7389 conjuctions. This might take some time... [2019-10-13 21:53:06,627 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:53:06,628 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 21:53:06,634 INFO L168 Benchmark]: Toolchain (without parser) took 22419.22 ms. Allocated memory was 138.4 MB in the beginning and 437.3 MB in the end (delta: 298.8 MB). Free memory was 97.3 MB in the beginning and 183.1 MB in the end (delta: -85.8 MB). Peak memory consumption was 213.1 MB. Max. memory is 7.1 GB. [2019-10-13 21:53:06,635 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 21:53:06,636 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1442.99 ms. Allocated memory was 138.4 MB in the beginning and 206.0 MB in the end (delta: 67.6 MB). Free memory was 97.1 MB in the beginning and 110.4 MB in the end (delta: -13.3 MB). Peak memory consumption was 59.6 MB. Max. memory is 7.1 GB. [2019-10-13 21:53:06,637 INFO L168 Benchmark]: Boogie Preprocessor took 243.64 ms. Allocated memory is still 206.0 MB. Free memory was 110.4 MB in the beginning and 97.4 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2019-10-13 21:53:06,638 INFO L168 Benchmark]: RCFGBuilder took 10191.85 ms. Allocated memory was 206.0 MB in the beginning and 304.6 MB in the end (delta: 98.6 MB). Free memory was 97.4 MB in the beginning and 226.1 MB in the end (delta: -128.7 MB). Peak memory consumption was 121.1 MB. Max. memory is 7.1 GB. [2019-10-13 21:53:06,640 INFO L168 Benchmark]: TraceAbstraction took 10536.62 ms. Allocated memory was 304.6 MB in the beginning and 437.3 MB in the end (delta: 132.6 MB). Free memory was 226.1 MB in the beginning and 183.1 MB in the end (delta: 43.0 MB). Peak memory consumption was 175.7 MB. Max. memory is 7.1 GB. [2019-10-13 21:53:06,652 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1442.99 ms. Allocated memory was 138.4 MB in the beginning and 206.0 MB in the end (delta: 67.6 MB). Free memory was 97.1 MB in the beginning and 110.4 MB in the end (delta: -13.3 MB). Peak memory consumption was 59.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 243.64 ms. Allocated memory is still 206.0 MB. Free memory was 110.4 MB in the beginning and 97.4 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10191.85 ms. Allocated memory was 206.0 MB in the beginning and 304.6 MB in the end (delta: 98.6 MB). Free memory was 97.4 MB in the beginning and 226.1 MB in the end (delta: -128.7 MB). Peak memory consumption was 121.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10536.62 ms. Allocated memory was 304.6 MB in the beginning and 437.3 MB in the end (delta: 132.6 MB). Free memory was 226.1 MB in the beginning and 183.1 MB in the end (delta: 43.0 MB). Peak memory consumption was 175.7 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...