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/systemc/token_ring.01.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:26:57,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:26:57,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:26:57,323 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:26:57,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:26:57,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:26:57,326 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:26:57,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:26:57,340 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:26:57,343 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:26:57,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:26:57,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:26:57,346 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:26:57,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:26:57,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:26:57,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:26:57,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:26:57,355 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:26:57,357 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:26:57,362 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:26:57,366 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:26:57,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:26:57,369 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:26:57,370 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:26:57,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:26:57,374 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:26:57,374 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:26:57,376 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:26:57,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:26:57,379 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:26:57,379 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:26:57,381 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:26:57,381 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:26:57,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:26:57,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:26:57,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:26:57,384 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:26:57,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:26:57,385 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:26:57,386 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:26:57,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:26:57,388 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 23:26:57,422 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:26:57,422 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:26:57,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:26:57,423 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:26:57,424 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:26:57,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:26:57,424 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:26:57,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:26:57,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:26:57,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:26:57,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:26:57,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:26:57,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:26:57,425 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:26:57,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:26:57,426 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:26:57,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:26:57,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:26:57,426 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:26:57,427 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:26:57,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:26:57,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:26:57,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:26:57,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:26:57,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:26:57,428 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:26:57,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:26:57,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:26:57,428 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 23:26:57,728 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:26:57,748 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:26:57,752 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:26:57,753 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:26:57,753 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:26:57,754 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.01.cil-1.c [2019-10-13 23:26:57,826 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0068689a/e257398b0c0244a5a4fece9a03b5bddd/FLAGcc17138b5 [2019-10-13 23:26:58,252 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:26:58,252 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.01.cil-1.c [2019-10-13 23:26:58,267 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0068689a/e257398b0c0244a5a4fece9a03b5bddd/FLAGcc17138b5 [2019-10-13 23:26:58,621 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0068689a/e257398b0c0244a5a4fece9a03b5bddd [2019-10-13 23:26:58,631 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:26:58,633 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:26:58,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:26:58,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:26:58,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:26:58,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:26:58" (1/1) ... [2019-10-13 23:26:58,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ef64dac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:58, skipping insertion in model container [2019-10-13 23:26:58,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:26:58" (1/1) ... [2019-10-13 23:26:58,648 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:26:58,691 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:26:58,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:26:58,945 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:26:58,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:26:59,083 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:26:59,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:59 WrapperNode [2019-10-13 23:26:59,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:26:59,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:26:59,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:26:59,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:26:59,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:59" (1/1) ... [2019-10-13 23:26:59,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:59" (1/1) ... [2019-10-13 23:26:59,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:59" (1/1) ... [2019-10-13 23:26:59,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:59" (1/1) ... [2019-10-13 23:26:59,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:59" (1/1) ... [2019-10-13 23:26:59,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:59" (1/1) ... [2019-10-13 23:26:59,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:59" (1/1) ... [2019-10-13 23:26:59,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:26:59,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:26:59,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:26:59,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:26:59,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:59" (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 23:26:59,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:26:59,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:26:59,179 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2019-10-13 23:26:59,179 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2019-10-13 23:26:59,179 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2019-10-13 23:26:59,179 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2019-10-13 23:26:59,180 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2019-10-13 23:26:59,180 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2019-10-13 23:26:59,180 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2019-10-13 23:26:59,180 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2019-10-13 23:26:59,180 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2019-10-13 23:26:59,180 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2019-10-13 23:26:59,181 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2019-10-13 23:26:59,181 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2019-10-13 23:26:59,181 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2019-10-13 23:26:59,181 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2019-10-13 23:26:59,181 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2019-10-13 23:26:59,182 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2019-10-13 23:26:59,182 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2019-10-13 23:26:59,182 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2019-10-13 23:26:59,182 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:26:59,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:26:59,182 INFO L130 BoogieDeclarations]: Found specification of procedure error [2019-10-13 23:26:59,182 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2019-10-13 23:26:59,183 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2019-10-13 23:26:59,183 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2019-10-13 23:26:59,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:26:59,183 INFO L130 BoogieDeclarations]: Found specification of procedure master [2019-10-13 23:26:59,183 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2019-10-13 23:26:59,183 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2019-10-13 23:26:59,184 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2019-10-13 23:26:59,184 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2019-10-13 23:26:59,184 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2019-10-13 23:26:59,184 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2019-10-13 23:26:59,184 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2019-10-13 23:26:59,184 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2019-10-13 23:26:59,184 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2019-10-13 23:26:59,184 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2019-10-13 23:26:59,184 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2019-10-13 23:26:59,185 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2019-10-13 23:26:59,185 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2019-10-13 23:26:59,185 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:26:59,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:26:59,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:26:59,955 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:26:59,955 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 23:26:59,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:26:59 BoogieIcfgContainer [2019-10-13 23:26:59,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:26:59,958 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:26:59,958 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:26:59,962 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:26:59,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:26:58" (1/3) ... [2019-10-13 23:26:59,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c5d8ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:26:59, skipping insertion in model container [2019-10-13 23:26:59,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:59" (2/3) ... [2019-10-13 23:26:59,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c5d8ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:26:59, skipping insertion in model container [2019-10-13 23:26:59,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:26:59" (3/3) ... [2019-10-13 23:26:59,965 INFO L109 eAbstractionObserver]: Analyzing ICFG token_ring.01.cil-1.c [2019-10-13 23:26:59,975 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:26:59,983 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:26:59,994 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:27:00,019 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:27:00,019 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:27:00,019 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:27:00,019 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:27:00,020 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:27:00,020 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:27:00,020 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:27:00,020 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:27:00,041 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states. [2019-10-13 23:27:00,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-13 23:27:00,049 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:27:00,050 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] [2019-10-13 23:27:00,051 INFO L410 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:27:00,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:27:00,057 INFO L82 PathProgramCache]: Analyzing trace with hash 458852481, now seen corresponding path program 1 times [2019-10-13 23:27:00,066 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:27:00,067 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997045176] [2019-10-13 23:27:00,067 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:27:00,067 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:27:00,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:27:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:27:00,359 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 23:27:00,360 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997045176] [2019-10-13 23:27:00,361 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:27:00,362 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:27:00,362 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530803226] [2019-10-13 23:27:00,367 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:27:00,367 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:27:00,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:27:00,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:27:00,386 INFO L87 Difference]: Start difference. First operand 108 states. Second operand 4 states. [2019-10-13 23:27:00,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:27:00,727 INFO L93 Difference]: Finished difference Result 285 states and 379 transitions. [2019-10-13 23:27:00,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 23:27:00,729 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2019-10-13 23:27:00,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:27:00,742 INFO L225 Difference]: With dead ends: 285 [2019-10-13 23:27:00,743 INFO L226 Difference]: Without dead ends: 181 [2019-10-13 23:27:00,747 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:27:00,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2019-10-13 23:27:00,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 177. [2019-10-13 23:27:00,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2019-10-13 23:27:00,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 215 transitions. [2019-10-13 23:27:00,818 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 215 transitions. Word has length 56 [2019-10-13 23:27:00,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:27:00,819 INFO L462 AbstractCegarLoop]: Abstraction has 177 states and 215 transitions. [2019-10-13 23:27:00,819 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:27:00,819 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 215 transitions. [2019-10-13 23:27:00,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-13 23:27:00,822 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:27:00,822 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] [2019-10-13 23:27:00,822 INFO L410 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:27:00,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:27:00,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1097636960, now seen corresponding path program 1 times [2019-10-13 23:27:00,823 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:27:00,823 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006181063] [2019-10-13 23:27:00,824 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:27:00,824 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:27:00,824 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:27:00,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:27:00,941 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 23:27:00,942 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006181063] [2019-10-13 23:27:00,942 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:27:00,942 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:27:00,942 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005688339] [2019-10-13 23:27:00,944 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:27:00,944 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:27:00,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:27:00,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:27:00,945 INFO L87 Difference]: Start difference. First operand 177 states and 215 transitions. Second operand 3 states. [2019-10-13 23:27:01,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:27:01,037 INFO L93 Difference]: Finished difference Result 487 states and 633 transitions. [2019-10-13 23:27:01,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:27:01,038 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2019-10-13 23:27:01,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:27:01,047 INFO L225 Difference]: With dead ends: 487 [2019-10-13 23:27:01,047 INFO L226 Difference]: Without dead ends: 326 [2019-10-13 23:27:01,052 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 23:27:01,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2019-10-13 23:27:01,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 324. [2019-10-13 23:27:01,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2019-10-13 23:27:01,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 408 transitions. [2019-10-13 23:27:01,110 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 408 transitions. Word has length 56 [2019-10-13 23:27:01,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:27:01,111 INFO L462 AbstractCegarLoop]: Abstraction has 324 states and 408 transitions. [2019-10-13 23:27:01,111 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:27:01,111 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 408 transitions. [2019-10-13 23:27:01,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-10-13 23:27:01,115 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:27:01,115 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:27:01,115 INFO L410 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:27:01,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:27:01,116 INFO L82 PathProgramCache]: Analyzing trace with hash -2069013347, now seen corresponding path program 1 times [2019-10-13 23:27:01,116 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:27:01,116 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830999613] [2019-10-13 23:27:01,117 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:27:01,117 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:27:01,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:27:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:27:01,223 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 23:27:01,224 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830999613] [2019-10-13 23:27:01,224 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:27:01,224 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:27:01,224 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143681080] [2019-10-13 23:27:01,225 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:27:01,225 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:27:01,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:27:01,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:27:01,226 INFO L87 Difference]: Start difference. First operand 324 states and 408 transitions. Second operand 4 states. [2019-10-13 23:27:01,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:27:01,327 INFO L93 Difference]: Finished difference Result 841 states and 1087 transitions. [2019-10-13 23:27:01,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 23:27:01,328 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2019-10-13 23:27:01,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:27:01,341 INFO L225 Difference]: With dead ends: 841 [2019-10-13 23:27:01,341 INFO L226 Difference]: Without dead ends: 534 [2019-10-13 23:27:01,343 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 23:27:01,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2019-10-13 23:27:01,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 452. [2019-10-13 23:27:01,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2019-10-13 23:27:01,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 574 transitions. [2019-10-13 23:27:01,416 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 574 transitions. Word has length 91 [2019-10-13 23:27:01,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:27:01,417 INFO L462 AbstractCegarLoop]: Abstraction has 452 states and 574 transitions. [2019-10-13 23:27:01,417 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:27:01,417 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 574 transitions. [2019-10-13 23:27:01,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-13 23:27:01,426 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:27:01,427 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:27:01,427 INFO L410 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:27:01,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:27:01,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1882668428, now seen corresponding path program 1 times [2019-10-13 23:27:01,428 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:27:01,428 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372278449] [2019-10-13 23:27:01,428 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:27:01,428 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:27:01,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:27:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:27:01,614 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2019-10-13 23:27:01,615 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372278449] [2019-10-13 23:27:01,615 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215579991] [2019-10-13 23:27:01,616 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 23:27:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:27:01,751 INFO L256 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 23:27:01,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:27:01,802 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 23:27:01,802 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:27:02,033 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-10-13 23:27:02,035 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:27:02,035 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [8] total 10 [2019-10-13 23:27:02,035 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998208577] [2019-10-13 23:27:02,037 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:27:02,038 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:27:02,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:27:02,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:27:02,039 INFO L87 Difference]: Start difference. First operand 452 states and 574 transitions. Second operand 4 states. [2019-10-13 23:27:02,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:27:02,210 INFO L93 Difference]: Finished difference Result 740 states and 963 transitions. [2019-10-13 23:27:02,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 23:27:02,210 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2019-10-13 23:27:02,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:27:02,217 INFO L225 Difference]: With dead ends: 740 [2019-10-13 23:27:02,218 INFO L226 Difference]: Without dead ends: 526 [2019-10-13 23:27:02,220 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 255 SyntacticMatches, 6 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:27:02,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2019-10-13 23:27:02,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2019-10-13 23:27:02,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2019-10-13 23:27:02,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 651 transitions. [2019-10-13 23:27:02,297 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 651 transitions. Word has length 131 [2019-10-13 23:27:02,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:27:02,297 INFO L462 AbstractCegarLoop]: Abstraction has 526 states and 651 transitions. [2019-10-13 23:27:02,297 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:27:02,298 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 651 transitions. [2019-10-13 23:27:02,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-13 23:27:02,303 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:27:02,304 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:27:02,512 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:27:02,513 INFO L410 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:27:02,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:27:02,514 INFO L82 PathProgramCache]: Analyzing trace with hash 130022275, now seen corresponding path program 1 times [2019-10-13 23:27:02,514 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:27:02,515 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065852976] [2019-10-13 23:27:02,515 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:27:02,515 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:27:02,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:27:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:27:02,664 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 23:27:02,665 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065852976] [2019-10-13 23:27:02,666 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269643203] [2019-10-13 23:27:02,667 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 23:27:02,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:27:02,804 INFO L256 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 23:27:02,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:27:02,898 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:27:02,898 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:27:03,043 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-13 23:27:03,046 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:27:03,047 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 3] total 10 [2019-10-13 23:27:03,047 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658511437] [2019-10-13 23:27:03,047 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:27:03,048 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:27:03,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:27:03,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:27:03,049 INFO L87 Difference]: Start difference. First operand 526 states and 651 transitions. Second operand 3 states. [2019-10-13 23:27:03,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:27:03,098 INFO L93 Difference]: Finished difference Result 949 states and 1188 transitions. [2019-10-13 23:27:03,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:27:03,098 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2019-10-13 23:27:03,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:27:03,104 INFO L225 Difference]: With dead ends: 949 [2019-10-13 23:27:03,104 INFO L226 Difference]: Without dead ends: 694 [2019-10-13 23:27:03,106 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:27:03,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2019-10-13 23:27:03,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 574. [2019-10-13 23:27:03,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 574 states. [2019-10-13 23:27:03,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 709 transitions. [2019-10-13 23:27:03,167 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 709 transitions. Word has length 132 [2019-10-13 23:27:03,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:27:03,168 INFO L462 AbstractCegarLoop]: Abstraction has 574 states and 709 transitions. [2019-10-13 23:27:03,168 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:27:03,168 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 709 transitions. [2019-10-13 23:27:03,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-10-13 23:27:03,172 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:27:03,172 INFO L380 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:27:03,383 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:27:03,383 INFO L410 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:27:03,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:27:03,383 INFO L82 PathProgramCache]: Analyzing trace with hash 628789896, now seen corresponding path program 1 times [2019-10-13 23:27:03,384 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:27:03,384 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230350612] [2019-10-13 23:27:03,384 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:27:03,384 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:27:03,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:27:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:27:03,555 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 38 proven. 19 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2019-10-13 23:27:03,555 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230350612] [2019-10-13 23:27:03,555 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617622793] [2019-10-13 23:27:03,556 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 23:27:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:27:03,722 INFO L256 TraceCheckSpWp]: Trace formula consists of 848 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-13 23:27:03,728 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:27:03,815 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 95 proven. 4 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-13 23:27:03,815 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:27:04,001 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:27:04,094 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:27:04,095 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:27:04,111 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:27:04,182 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 29 proven. 18 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2019-10-13 23:27:04,183 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1616273890] [2019-10-13 23:27:04,220 INFO L162 IcfgInterpreter]: Started Sifa with 94 locations of interest [2019-10-13 23:27:04,220 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:27:04,231 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:27:04,240 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:27:04,241 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:27:04,440 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 37 for LOIs [2019-10-13 23:27:04,470 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 61 for LOIs [2019-10-13 23:27:04,802 INFO L199 IcfgInterpreter]: Interpreting procedure init_model with input of size 41 for LOIs [2019-10-13 23:27:04,853 INFO L199 IcfgInterpreter]: Interpreting procedure start_simulation with input of size 68 for LOIs [2019-10-13 23:27:07,460 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:27:07,461 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: ε 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: ε 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.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 23:27:07,468 INFO L168 Benchmark]: Toolchain (without parser) took 8833.83 ms. Allocated memory was 140.5 MB in the beginning and 445.1 MB in the end (delta: 304.6 MB). Free memory was 105.6 MB in the beginning and 406.2 MB in the end (delta: -300.7 MB). Peak memory consumption was 252.2 MB. Max. memory is 7.1 GB. [2019-10-13 23:27:07,469 INFO L168 Benchmark]: CDTParser took 1.30 ms. Allocated memory is still 140.5 MB. Free memory was 123.8 MB in the beginning and 123.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 23:27:07,471 INFO L168 Benchmark]: CACSL2BoogieTranslator took 450.28 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 105.4 MB in the beginning and 182.1 MB in the end (delta: -76.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2019-10-13 23:27:07,471 INFO L168 Benchmark]: Boogie Preprocessor took 44.75 ms. Allocated memory is still 203.9 MB. Free memory was 182.1 MB in the beginning and 179.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2019-10-13 23:27:07,472 INFO L168 Benchmark]: RCFGBuilder took 827.78 ms. Allocated memory is still 203.9 MB. Free memory was 179.5 MB in the beginning and 126.9 MB in the end (delta: 52.6 MB). Peak memory consumption was 52.6 MB. Max. memory is 7.1 GB. [2019-10-13 23:27:07,473 INFO L168 Benchmark]: TraceAbstraction took 7506.67 ms. Allocated memory was 203.9 MB in the beginning and 445.1 MB in the end (delta: 241.2 MB). Free memory was 126.2 MB in the beginning and 406.2 MB in the end (delta: -280.0 MB). Peak memory consumption was 209.4 MB. Max. memory is 7.1 GB. [2019-10-13 23:27:07,477 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.30 ms. Allocated memory is still 140.5 MB. Free memory was 123.8 MB in the beginning and 123.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 450.28 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 105.4 MB in the beginning and 182.1 MB in the end (delta: -76.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 44.75 ms. Allocated memory is still 203.9 MB. Free memory was 182.1 MB in the beginning and 179.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 827.78 ms. Allocated memory is still 203.9 MB. Free memory was 179.5 MB in the beginning and 126.9 MB in the end (delta: 52.6 MB). Peak memory consumption was 52.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7506.67 ms. Allocated memory was 203.9 MB in the beginning and 445.1 MB in the end (delta: 241.2 MB). Free memory was 126.2 MB in the beginning and 406.2 MB in the end (delta: -280.0 MB). Peak memory consumption was 209.4 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: ε de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε: 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...