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/Problem03_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:41:39,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:41:39,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:41:39,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:41:39,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:41:39,128 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:41:39,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:41:39,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:41:39,133 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:41:39,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:41:39,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:41:39,136 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:41:39,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:41:39,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:41:39,138 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:41:39,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:41:39,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:41:39,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:41:39,143 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:41:39,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:41:39,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:41:39,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:41:39,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:41:39,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:41:39,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:41:39,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:41:39,162 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:41:39,163 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:41:39,164 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:41:39,179 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:41:39,179 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:41:39,180 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:41:39,181 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:41:39,181 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:41:39,181 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:41:39,181 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:41:39,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:41:39,182 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:41:39,182 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:41:39,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:41:39,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:41:39,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:41:39,183 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:41:39,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:41:39,183 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:41:39,183 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:41:39,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:41:39,184 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:41:39,184 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:41:39,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:41:39,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:41:39,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:41:39,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:41:39,186 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:41:39,186 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:41:39,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:41:39,187 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:41:39,187 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 21:41:39,485 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:41:39,504 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:41:39,509 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:41:39,515 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:41:39,515 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:41:39,516 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label10.c [2019-10-13 21:41:39,582 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d4c4bedd/a3095ea049cb42d995da006cf825812b/FLAGf3197e44d [2019-10-13 21:41:40,299 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:41:40,301 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label10.c [2019-10-13 21:41:40,322 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d4c4bedd/a3095ea049cb42d995da006cf825812b/FLAGf3197e44d [2019-10-13 21:41:40,511 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d4c4bedd/a3095ea049cb42d995da006cf825812b [2019-10-13 21:41:40,521 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:41:40,523 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:41:40,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:41:40,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:41:40,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:41:40,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:41:40" (1/1) ... [2019-10-13 21:41:40,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bf600bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:40, skipping insertion in model container [2019-10-13 21:41:40,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:41:40" (1/1) ... [2019-10-13 21:41:40,543 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:41:40,620 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:41:41,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:41:41,436 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:41:41,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:41:41,918 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:41:41,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:41 WrapperNode [2019-10-13 21:41:41,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:41:41,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:41:41,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:41:41,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:41:41,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:41" (1/1) ... [2019-10-13 21:41:41,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:41" (1/1) ... [2019-10-13 21:41:41,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:41" (1/1) ... [2019-10-13 21:41:41,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:41" (1/1) ... [2019-10-13 21:41:42,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:41" (1/1) ... [2019-10-13 21:41:42,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:41" (1/1) ... [2019-10-13 21:41:42,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:41" (1/1) ... [2019-10-13 21:41:42,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:41:42,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:41:42,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:41:42,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:41:42,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:41:42,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:41:42,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:41:42,198 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 21:41:42,198 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:41:42,199 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 21:41:42,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:41:42,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:41:42,201 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:41:42,201 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:41:42,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:41:42,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:41:45,625 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:41:45,625 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 21:41:45,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:41:45 BoogieIcfgContainer [2019-10-13 21:41:45,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:41:45,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:41:45,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:41:45,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:41:45,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:41:40" (1/3) ... [2019-10-13 21:41:45,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca10dc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:41:45, skipping insertion in model container [2019-10-13 21:41:45,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:41" (2/3) ... [2019-10-13 21:41:45,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca10dc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:41:45, skipping insertion in model container [2019-10-13 21:41:45,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:41:45" (3/3) ... [2019-10-13 21:41:45,639 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label10.c [2019-10-13 21:41:45,649 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:41:45,658 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:41:45,670 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:41:45,697 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:41:45,698 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:41:45,698 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:41:45,698 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:41:45,698 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:41:45,698 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:41:45,699 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:41:45,699 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:41:45,723 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2019-10-13 21:41:45,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-13 21:41:45,737 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:45,738 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:41:45,740 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:45,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:45,746 INFO L82 PathProgramCache]: Analyzing trace with hash 136473382, now seen corresponding path program 1 times [2019-10-13 21:41:45,756 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:45,756 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889233912] [2019-10-13 21:41:45,757 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:45,757 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:45,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:46,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:46,454 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889233912] [2019-10-13 21:41:46,455 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:41:46,455 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:41:46,455 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471585036] [2019-10-13 21:41:46,460 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:41:46,461 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:41:46,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:41:46,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:41:46,477 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 3 states. [2019-10-13 21:41:47,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:41:47,789 INFO L93 Difference]: Finished difference Result 462 states and 886 transitions. [2019-10-13 21:41:47,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:41:47,791 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2019-10-13 21:41:47,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:41:47,808 INFO L225 Difference]: With dead ends: 462 [2019-10-13 21:41:47,808 INFO L226 Difference]: Without dead ends: 301 [2019-10-13 21:41:47,813 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:41:47,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2019-10-13 21:41:47,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2019-10-13 21:41:47,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2019-10-13 21:41:47,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 564 transitions. [2019-10-13 21:41:47,896 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 564 transitions. Word has length 149 [2019-10-13 21:41:47,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:41:47,898 INFO L462 AbstractCegarLoop]: Abstraction has 301 states and 564 transitions. [2019-10-13 21:41:47,898 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:41:47,898 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 564 transitions. [2019-10-13 21:41:47,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-13 21:41:47,903 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:47,904 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:41:47,904 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:47,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:47,904 INFO L82 PathProgramCache]: Analyzing trace with hash 558843325, now seen corresponding path program 1 times [2019-10-13 21:41:47,905 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:47,905 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82156666] [2019-10-13 21:41:47,905 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:47,905 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:47,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:47,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:48,093 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:48,094 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82156666] [2019-10-13 21:41:48,094 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:41:48,095 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:41:48,095 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955462677] [2019-10-13 21:41:48,097 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:41:48,098 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:41:48,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:41:48,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:41:48,098 INFO L87 Difference]: Start difference. First operand 301 states and 564 transitions. Second operand 6 states. [2019-10-13 21:41:49,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:41:49,522 INFO L93 Difference]: Finished difference Result 929 states and 1794 transitions. [2019-10-13 21:41:49,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:41:49,522 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2019-10-13 21:41:49,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:41:49,531 INFO L225 Difference]: With dead ends: 929 [2019-10-13 21:41:49,532 INFO L226 Difference]: Without dead ends: 633 [2019-10-13 21:41:49,535 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:41:49,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2019-10-13 21:41:49,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 603. [2019-10-13 21:41:49,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-10-13 21:41:49,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 1113 transitions. [2019-10-13 21:41:49,594 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 1113 transitions. Word has length 158 [2019-10-13 21:41:49,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:41:49,595 INFO L462 AbstractCegarLoop]: Abstraction has 603 states and 1113 transitions. [2019-10-13 21:41:49,595 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:41:49,595 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 1113 transitions. [2019-10-13 21:41:49,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-13 21:41:49,599 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:49,600 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:41:49,600 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:49,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:49,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1532428526, now seen corresponding path program 1 times [2019-10-13 21:41:49,601 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:49,601 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306746939] [2019-10-13 21:41:49,601 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:49,601 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:49,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:49,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:49,876 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:49,877 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306746939] [2019-10-13 21:41:49,877 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:41:49,878 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:41:49,878 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835898584] [2019-10-13 21:41:49,879 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:41:49,879 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:41:49,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:41:49,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:41:49,880 INFO L87 Difference]: Start difference. First operand 603 states and 1113 transitions. Second operand 3 states. [2019-10-13 21:41:50,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:41:50,967 INFO L93 Difference]: Finished difference Result 1793 states and 3387 transitions. [2019-10-13 21:41:50,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:41:50,969 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2019-10-13 21:41:50,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:41:50,978 INFO L225 Difference]: With dead ends: 1793 [2019-10-13 21:41:50,979 INFO L226 Difference]: Without dead ends: 1195 [2019-10-13 21:41:50,981 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:41:50,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2019-10-13 21:41:51,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1195. [2019-10-13 21:41:51,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1195 states. [2019-10-13 21:41:51,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 2172 transitions. [2019-10-13 21:41:51,032 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 2172 transitions. Word has length 161 [2019-10-13 21:41:51,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:41:51,033 INFO L462 AbstractCegarLoop]: Abstraction has 1195 states and 2172 transitions. [2019-10-13 21:41:51,034 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:41:51,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 2172 transitions. [2019-10-13 21:41:51,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-10-13 21:41:51,042 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:51,043 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:41:51,043 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:51,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:51,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1729521215, now seen corresponding path program 1 times [2019-10-13 21:41:51,045 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:51,045 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019405715] [2019-10-13 21:41:51,045 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:51,045 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:51,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:51,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:51,226 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:51,227 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019405715] [2019-10-13 21:41:51,227 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688946394] [2019-10-13 21:41:51,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:41:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:51,521 INFO L256 TraceCheckSpWp]: Trace formula consists of 1038 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 21:41:51,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:41:51,651 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 21:41:51,651 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:41:51,784 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 23 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 21:41:51,784 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:41:51,785 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2019-10-13 21:41:51,785 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871946600] [2019-10-13 21:41:51,786 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:41:51,786 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:41:51,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:41:51,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-13 21:41:51,787 INFO L87 Difference]: Start difference. First operand 1195 states and 2172 transitions. Second operand 5 states. [2019-10-13 21:41:53,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:41:53,149 INFO L93 Difference]: Finished difference Result 3669 states and 7031 transitions. [2019-10-13 21:41:53,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:41:53,151 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2019-10-13 21:41:53,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:41:53,171 INFO L225 Difference]: With dead ends: 3669 [2019-10-13 21:41:53,172 INFO L226 Difference]: Without dead ends: 2479 [2019-10-13 21:41:53,176 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:41:53,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2479 states. [2019-10-13 21:41:53,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2479 to 2441. [2019-10-13 21:41:53,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2441 states. [2019-10-13 21:41:53,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2441 states to 2441 states and 4497 transitions. [2019-10-13 21:41:53,271 INFO L78 Accepts]: Start accepts. Automaton has 2441 states and 4497 transitions. Word has length 178 [2019-10-13 21:41:53,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:41:53,272 INFO L462 AbstractCegarLoop]: Abstraction has 2441 states and 4497 transitions. [2019-10-13 21:41:53,272 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:41:53,272 INFO L276 IsEmpty]: Start isEmpty. Operand 2441 states and 4497 transitions. [2019-10-13 21:41:53,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-13 21:41:53,281 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:53,281 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:41:53,486 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:41:53,487 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:53,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:53,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1305476158, now seen corresponding path program 1 times [2019-10-13 21:41:53,488 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:53,489 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709653268] [2019-10-13 21:41:53,489 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:53,489 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:53,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:53,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:53,619 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 21:41:53,619 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709653268] [2019-10-13 21:41:53,619 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632092962] [2019-10-13 21:41:53,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:41:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:53,906 INFO L256 TraceCheckSpWp]: Trace formula consists of 1034 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:41:53,916 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:41:54,058 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 21:41:54,058 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:41:54,184 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 21:41:54,184 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:41:54,185 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2019-10-13 21:41:54,185 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896642659] [2019-10-13 21:41:54,186 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:41:54,187 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:41:54,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:41:54,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:41:54,188 INFO L87 Difference]: Start difference. First operand 2441 states and 4497 transitions. Second operand 5 states. [2019-10-13 21:41:55,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:41:55,430 INFO L93 Difference]: Finished difference Result 7465 states and 15186 transitions. [2019-10-13 21:41:55,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:41:55,430 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2019-10-13 21:41:55,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:41:55,478 INFO L225 Difference]: With dead ends: 7465 [2019-10-13 21:41:55,479 INFO L226 Difference]: Without dead ends: 5029 [2019-10-13 21:41:55,490 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 353 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:41:55,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5029 states. [2019-10-13 21:41:55,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5029 to 4943. [2019-10-13 21:41:55,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4943 states. [2019-10-13 21:41:55,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4943 states to 4943 states and 8925 transitions. [2019-10-13 21:41:55,700 INFO L78 Accepts]: Start accepts. Automaton has 4943 states and 8925 transitions. Word has length 179 [2019-10-13 21:41:55,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:41:55,701 INFO L462 AbstractCegarLoop]: Abstraction has 4943 states and 8925 transitions. [2019-10-13 21:41:55,701 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:41:55,701 INFO L276 IsEmpty]: Start isEmpty. Operand 4943 states and 8925 transitions. [2019-10-13 21:41:55,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-10-13 21:41:55,720 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:55,720 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:41:55,925 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:41:55,926 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:55,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:55,927 INFO L82 PathProgramCache]: Analyzing trace with hash 2106578894, now seen corresponding path program 1 times [2019-10-13 21:41:55,927 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:55,928 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855069131] [2019-10-13 21:41:55,928 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:55,928 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:55,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:55,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:56,109 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:56,110 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855069131] [2019-10-13 21:41:56,111 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593411243] [2019-10-13 21:41:56,111 INFO L94 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 [2019-10-13 21:41:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:56,427 INFO L256 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 21:41:56,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:41:56,608 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:56,608 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:41:56,802 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:56,803 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1929375912] [2019-10-13 21:41:56,879 INFO L162 IcfgInterpreter]: Started Sifa with 153 locations of interest [2019-10-13 21:41:56,879 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:41:56,891 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:41:56,909 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:41:56,911 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:41:57,944 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 208 for LOIs [2019-10-13 21:41:58,060 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2019-10-13 21:41:58,345 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2019-10-13 21:41:58,696 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 304 [2019-10-13 21:41:58,965 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-10-13 21:41:59,312 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2019-10-13 21:42:00,041 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:42:00,043 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.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 21:42:00,048 INFO L168 Benchmark]: Toolchain (without parser) took 19524.91 ms. Allocated memory was 138.4 MB in the beginning and 604.5 MB in the end (delta: 466.1 MB). Free memory was 98.1 MB in the beginning and 414.4 MB in the end (delta: -316.3 MB). Peak memory consumption was 149.8 MB. Max. memory is 7.1 GB. [2019-10-13 21:42:00,049 INFO L168 Benchmark]: CDTParser took 0.24 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 21:42:00,050 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1395.47 ms. Allocated memory was 138.4 MB in the beginning and 205.5 MB in the end (delta: 67.1 MB). Free memory was 97.9 MB in the beginning and 124.4 MB in the end (delta: -26.5 MB). Peak memory consumption was 45.8 MB. Max. memory is 7.1 GB. [2019-10-13 21:42:00,051 INFO L168 Benchmark]: Boogie Preprocessor took 185.66 ms. Allocated memory is still 205.5 MB. Free memory was 124.4 MB in the beginning and 113.0 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2019-10-13 21:42:00,052 INFO L168 Benchmark]: RCFGBuilder took 3520.97 ms. Allocated memory was 205.5 MB in the beginning and 306.2 MB in the end (delta: 100.7 MB). Free memory was 113.0 MB in the beginning and 241.6 MB in the end (delta: -128.6 MB). Peak memory consumption was 82.3 MB. Max. memory is 7.1 GB. [2019-10-13 21:42:00,053 INFO L168 Benchmark]: TraceAbstraction took 14418.07 ms. Allocated memory was 306.2 MB in the beginning and 604.5 MB in the end (delta: 298.3 MB). Free memory was 241.6 MB in the beginning and 414.4 MB in the end (delta: -172.8 MB). Peak memory consumption was 125.6 MB. Max. memory is 7.1 GB. [2019-10-13 21:42:00,060 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 1395.47 ms. Allocated memory was 138.4 MB in the beginning and 205.5 MB in the end (delta: 67.1 MB). Free memory was 97.9 MB in the beginning and 124.4 MB in the end (delta: -26.5 MB). Peak memory consumption was 45.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 185.66 ms. Allocated memory is still 205.5 MB. Free memory was 124.4 MB in the beginning and 113.0 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3520.97 ms. Allocated memory was 205.5 MB in the beginning and 306.2 MB in the end (delta: 100.7 MB). Free memory was 113.0 MB in the beginning and 241.6 MB in the end (delta: -128.6 MB). Peak memory consumption was 82.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14418.07 ms. Allocated memory was 306.2 MB in the beginning and 604.5 MB in the end (delta: 298.3 MB). Free memory was 241.6 MB in the beginning and 414.4 MB in the end (delta: -172.8 MB). Peak memory consumption was 125.6 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...