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-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 17:14:19,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 17:14:19,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 17:14:19,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 17:14:19,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 17:14:19,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 17:14:19,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 17:14:19,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 17:14:19,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 17:14:19,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 17:14:19,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 17:14:19,710 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 17:14:19,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 17:14:19,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 17:14:19,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 17:14:19,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 17:14:19,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 17:14:19,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 17:14:19,716 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 17:14:19,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 17:14:19,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 17:14:19,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 17:14:19,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 17:14:19,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 17:14:19,724 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 17:14:19,724 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 17:14:19,725 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 17:14:19,725 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 17:14:19,726 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 17:14:19,727 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 17:14:19,727 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 17:14:19,728 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 17:14:19,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 17:14:19,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 17:14:19,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 17:14:19,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 17:14:19,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 17:14:19,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 17:14:19,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 17:14:19,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 17:14:19,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 17:14:19,738 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-07 17:14:19,757 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 17:14:19,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 17:14:19,759 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 17:14:19,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 17:14:19,760 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 17:14:19,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 17:14:19,760 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 17:14:19,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 17:14:19,761 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 17:14:19,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 17:14:19,762 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 17:14:19,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 17:14:19,762 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 17:14:19,763 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 17:14:19,763 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 17:14:19,763 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 17:14:19,763 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 17:14:19,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 17:14:19,764 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 17:14:19,764 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 17:14:19,764 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 17:14:19,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 17:14:19,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 17:14:19,765 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 17:14:19,765 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 17:14:19,765 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 17:14:19,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 17:14:19,766 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 17:14:19,766 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 17:14:20,075 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 17:14:20,088 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 17:14:20,091 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 17:14:20,093 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 17:14:20,093 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 17:14:20,094 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.01.cil-2.c [2019-10-07 17:14:20,169 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba8f86402/ea9feb0356534a95b19acb6b42a043e1/FLAG430039bc3 [2019-10-07 17:14:20,684 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 17:14:20,685 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.01.cil-2.c [2019-10-07 17:14:20,693 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba8f86402/ea9feb0356534a95b19acb6b42a043e1/FLAG430039bc3 [2019-10-07 17:14:21,010 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba8f86402/ea9feb0356534a95b19acb6b42a043e1 [2019-10-07 17:14:21,020 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 17:14:21,022 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 17:14:21,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 17:14:21,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 17:14:21,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 17:14:21,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 05:14:21" (1/1) ... [2019-10-07 17:14:21,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39fb0a41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 05:14:21, skipping insertion in model container [2019-10-07 17:14:21,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 05:14:21" (1/1) ... [2019-10-07 17:14:21,038 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 17:14:21,085 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 17:14:21,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 17:14:21,307 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 17:14:21,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 17:14:21,463 INFO L192 MainTranslator]: Completed translation [2019-10-07 17:14:21,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 05:14:21 WrapperNode [2019-10-07 17:14:21,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 17:14:21,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 17:14:21,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 17:14:21,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 17:14:21,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 05:14:21" (1/1) ... [2019-10-07 17:14:21,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 05:14:21" (1/1) ... [2019-10-07 17:14:21,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 05:14:21" (1/1) ... [2019-10-07 17:14:21,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 05:14:21" (1/1) ... [2019-10-07 17:14:21,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 05:14:21" (1/1) ... [2019-10-07 17:14:21,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 05:14:21" (1/1) ... [2019-10-07 17:14:21,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 05:14:21" (1/1) ... [2019-10-07 17:14:21,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 17:14:21,506 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 17:14:21,506 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 17:14:21,506 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 17:14:21,507 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 05:14:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 17:14:21,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 17:14:21,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 17:14:21,563 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2019-10-07 17:14:21,564 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2019-10-07 17:14:21,564 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2019-10-07 17:14:21,564 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2019-10-07 17:14:21,564 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2019-10-07 17:14:21,564 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2019-10-07 17:14:21,564 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2019-10-07 17:14:21,565 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2019-10-07 17:14:21,565 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2019-10-07 17:14:21,565 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2019-10-07 17:14:21,565 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2019-10-07 17:14:21,565 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2019-10-07 17:14:21,565 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2019-10-07 17:14:21,566 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2019-10-07 17:14:21,566 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2019-10-07 17:14:21,566 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2019-10-07 17:14:21,566 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2019-10-07 17:14:21,566 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2019-10-07 17:14:21,567 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 17:14:21,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 17:14:21,567 INFO L130 BoogieDeclarations]: Found specification of procedure error [2019-10-07 17:14:21,567 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2019-10-07 17:14:21,567 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2019-10-07 17:14:21,567 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2019-10-07 17:14:21,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 17:14:21,568 INFO L130 BoogieDeclarations]: Found specification of procedure master [2019-10-07 17:14:21,568 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2019-10-07 17:14:21,568 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2019-10-07 17:14:21,568 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2019-10-07 17:14:21,568 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2019-10-07 17:14:21,568 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2019-10-07 17:14:21,569 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2019-10-07 17:14:21,569 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2019-10-07 17:14:21,569 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2019-10-07 17:14:21,569 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2019-10-07 17:14:21,569 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2019-10-07 17:14:21,569 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2019-10-07 17:14:21,570 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2019-10-07 17:14:21,570 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2019-10-07 17:14:21,570 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 17:14:21,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 17:14:21,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 17:14:22,411 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 17:14:22,411 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-07 17:14:22,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 05:14:22 BoogieIcfgContainer [2019-10-07 17:14:22,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 17:14:22,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 17:14:22,415 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 17:14:22,418 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 17:14:22,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 05:14:21" (1/3) ... [2019-10-07 17:14:22,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@742cedbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 05:14:22, skipping insertion in model container [2019-10-07 17:14:22,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 05:14:21" (2/3) ... [2019-10-07 17:14:22,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@742cedbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 05:14:22, skipping insertion in model container [2019-10-07 17:14:22,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 05:14:22" (3/3) ... [2019-10-07 17:14:22,422 INFO L109 eAbstractionObserver]: Analyzing ICFG token_ring.01.cil-2.c [2019-10-07 17:14:22,432 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 17:14:22,440 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 17:14:22,452 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 17:14:22,478 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 17:14:22,478 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 17:14:22,478 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 17:14:22,479 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 17:14:22,479 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 17:14:22,479 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 17:14:22,479 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 17:14:22,480 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 17:14:22,502 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states. [2019-10-07 17:14:22,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-07 17:14:22,511 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 17:14:22,512 INFO L385 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] [2019-10-07 17:14:22,514 INFO L410 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 17:14:22,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 17:14:22,520 INFO L82 PathProgramCache]: Analyzing trace with hash 643454482, now seen corresponding path program 1 times [2019-10-07 17:14:22,529 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 17:14:22,529 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 17:14:22,530 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 17:14:22,530 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 17:14:22,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 17:14:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 17:14:22,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 17:14:22,833 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 17:14:22,834 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 17:14:22,835 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 17:14:22,839 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 17:14:22,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 17:14:22,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 17:14:22,856 INFO L87 Difference]: Start difference. First operand 113 states. Second operand 4 states. [2019-10-07 17:14:23,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 17:14:23,267 INFO L93 Difference]: Finished difference Result 300 states and 406 transitions. [2019-10-07 17:14:23,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 17:14:23,269 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2019-10-07 17:14:23,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 17:14:23,291 INFO L225 Difference]: With dead ends: 300 [2019-10-07 17:14:23,292 INFO L226 Difference]: Without dead ends: 191 [2019-10-07 17:14:23,301 INFO L606 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 [2019-10-07 17:14:23,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2019-10-07 17:14:23,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 186. [2019-10-07 17:14:23,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2019-10-07 17:14:23,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 230 transitions. [2019-10-07 17:14:23,395 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 230 transitions. Word has length 57 [2019-10-07 17:14:23,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 17:14:23,396 INFO L462 AbstractCegarLoop]: Abstraction has 186 states and 230 transitions. [2019-10-07 17:14:23,397 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 17:14:23,397 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 230 transitions. [2019-10-07 17:14:23,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-07 17:14:23,402 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 17:14:23,403 INFO L385 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] [2019-10-07 17:14:23,404 INFO L410 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 17:14:23,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 17:14:23,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1029063149, now seen corresponding path program 1 times [2019-10-07 17:14:23,405 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 17:14:23,406 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 17:14:23,406 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 17:14:23,406 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 17:14:23,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 17:14:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 17:14:23,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 17:14:23,549 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 17:14:23,550 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 17:14:23,550 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 17:14:23,552 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 17:14:23,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 17:14:23,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 17:14:23,552 INFO L87 Difference]: Start difference. First operand 186 states and 230 transitions. Second operand 3 states. [2019-10-07 17:14:23,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 17:14:23,616 INFO L93 Difference]: Finished difference Result 507 states and 665 transitions. [2019-10-07 17:14:23,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 17:14:23,616 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2019-10-07 17:14:23,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 17:14:23,622 INFO L225 Difference]: With dead ends: 507 [2019-10-07 17:14:23,622 INFO L226 Difference]: Without dead ends: 337 [2019-10-07 17:14:23,625 INFO L606 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 [2019-10-07 17:14:23,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2019-10-07 17:14:23,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 335. [2019-10-07 17:14:23,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2019-10-07 17:14:23,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 425 transitions. [2019-10-07 17:14:23,685 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 425 transitions. Word has length 57 [2019-10-07 17:14:23,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 17:14:23,685 INFO L462 AbstractCegarLoop]: Abstraction has 335 states and 425 transitions. [2019-10-07 17:14:23,686 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 17:14:23,686 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 425 transitions. [2019-10-07 17:14:23,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-07 17:14:23,690 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 17:14:23,690 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 17:14:23,690 INFO L410 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 17:14:23,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 17:14:23,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1706780877, now seen corresponding path program 1 times [2019-10-07 17:14:23,691 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 17:14:23,691 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 17:14:23,692 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 17:14:23,692 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 17:14:23,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 17:14:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 17:14:23,830 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-07 17:14:23,831 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 17:14:23,831 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 17:14:23,831 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 17:14:23,832 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 17:14:23,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 17:14:23,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 17:14:23,833 INFO L87 Difference]: Start difference. First operand 335 states and 425 transitions. Second operand 4 states. [2019-10-07 17:14:23,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 17:14:23,937 INFO L93 Difference]: Finished difference Result 863 states and 1121 transitions. [2019-10-07 17:14:23,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 17:14:23,938 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 93 [2019-10-07 17:14:23,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 17:14:23,945 INFO L225 Difference]: With dead ends: 863 [2019-10-07 17:14:23,945 INFO L226 Difference]: Without dead ends: 545 [2019-10-07 17:14:23,947 INFO L606 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 [2019-10-07 17:14:23,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2019-10-07 17:14:24,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 463. [2019-10-07 17:14:24,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2019-10-07 17:14:24,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 591 transitions. [2019-10-07 17:14:24,026 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 591 transitions. Word has length 93 [2019-10-07 17:14:24,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 17:14:24,030 INFO L462 AbstractCegarLoop]: Abstraction has 463 states and 591 transitions. [2019-10-07 17:14:24,030 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 17:14:24,030 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 591 transitions. [2019-10-07 17:14:24,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-07 17:14:24,044 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 17:14:24,044 INFO L385 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, 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] [2019-10-07 17:14:24,045 INFO L410 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 17:14:24,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 17:14:24,045 INFO L82 PathProgramCache]: Analyzing trace with hash 734950659, now seen corresponding path program 1 times [2019-10-07 17:14:24,046 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 17:14:24,046 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 17:14:24,046 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 17:14:24,046 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 17:14:24,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 17:14:24,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 17:14:24,290 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2019-10-07 17:14:24,290 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 17:14:24,290 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 17:14:24,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 17:14:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 17:14:24,447 INFO L256 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-07 17:14:24,467 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 17:14:24,516 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 17:14:24,516 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 17:14:24,737 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-10-07 17:14:24,738 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 17:14:24,738 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [8] total 10 [2019-10-07 17:14:24,739 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 17:14:24,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 17:14:24,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-07 17:14:24,739 INFO L87 Difference]: Start difference. First operand 463 states and 591 transitions. Second operand 4 states. [2019-10-07 17:14:24,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 17:14:24,922 INFO L93 Difference]: Finished difference Result 757 states and 989 transitions. [2019-10-07 17:14:24,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 17:14:24,923 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2019-10-07 17:14:24,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 17:14:24,928 INFO L225 Difference]: With dead ends: 757 [2019-10-07 17:14:24,928 INFO L226 Difference]: Without dead ends: 537 [2019-10-07 17:14:24,930 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 259 SyntacticMatches, 6 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-07 17:14:24,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2019-10-07 17:14:24,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2019-10-07 17:14:24,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2019-10-07 17:14:24,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 668 transitions. [2019-10-07 17:14:24,976 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 668 transitions. Word has length 133 [2019-10-07 17:14:24,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 17:14:24,977 INFO L462 AbstractCegarLoop]: Abstraction has 537 states and 668 transitions. [2019-10-07 17:14:24,977 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 17:14:24,977 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 668 transitions. [2019-10-07 17:14:24,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-10-07 17:14:24,980 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 17:14:24,980 INFO L385 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, 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] [2019-10-07 17:14:25,187 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 17:14:25,187 INFO L410 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 17:14:25,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 17:14:25,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1375568728, now seen corresponding path program 1 times [2019-10-07 17:14:25,188 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 17:14:25,188 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 17:14:25,188 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 17:14:25,188 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 17:14:25,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 17:14:25,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 17:14:25,304 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-07 17:14:25,305 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 17:14:25,305 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 17:14:25,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 17:14:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 17:14:25,424 INFO L256 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-07 17:14:25,430 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 17:14:25,477 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 17:14:25,477 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 17:14:25,659 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-07 17:14:25,660 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 17:14:25,660 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 3] total 10 [2019-10-07 17:14:25,661 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 17:14:25,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 17:14:25,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-10-07 17:14:25,662 INFO L87 Difference]: Start difference. First operand 537 states and 668 transitions. Second operand 3 states. [2019-10-07 17:14:25,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 17:14:25,721 INFO L93 Difference]: Finished difference Result 972 states and 1223 transitions. [2019-10-07 17:14:25,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 17:14:25,721 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2019-10-07 17:14:25,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 17:14:25,727 INFO L225 Difference]: With dead ends: 972 [2019-10-07 17:14:25,727 INFO L226 Difference]: Without dead ends: 711 [2019-10-07 17:14:25,729 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-10-07 17:14:25,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2019-10-07 17:14:25,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 585. [2019-10-07 17:14:25,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2019-10-07 17:14:25,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 726 transitions. [2019-10-07 17:14:25,776 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 726 transitions. Word has length 134 [2019-10-07 17:14:25,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 17:14:25,777 INFO L462 AbstractCegarLoop]: Abstraction has 585 states and 726 transitions. [2019-10-07 17:14:25,777 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 17:14:25,777 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 726 transitions. [2019-10-07 17:14:25,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2019-10-07 17:14:25,781 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 17:14:25,781 INFO L385 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, 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] [2019-10-07 17:14:25,985 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 17:14:25,986 INFO L410 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 17:14:25,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 17:14:25,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1537180485, now seen corresponding path program 1 times [2019-10-07 17:14:25,987 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 17:14:25,987 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 17:14:25,987 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 17:14:25,987 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 17:14:25,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 17:14:26,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 17:14:26,156 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 39 proven. 19 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2019-10-07 17:14:26,157 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 17:14:26,157 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 17:14:26,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 17:14:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 17:14:26,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 856 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-07 17:14:26,329 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 17:14:26,471 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 95 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-10-07 17:14:26,471 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 17:14:26,674 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 17:14:26,792 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 17:14:26,793 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 17:14:26,810 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 17:14:26,853 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 30 proven. 18 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2019-10-07 17:14:26,854 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 17:14:26,897 INFO L162 IcfgInterpreter]: Started Sifa with 95 locations of interest [2019-10-07 17:14:26,898 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 17:14:26,904 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 17:14:26,912 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 17:14:26,913 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 17:14:27,087 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 37 for LOIs [2019-10-07 17:14:27,114 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 61 for LOIs [2019-10-07 17:14:27,470 INFO L199 IcfgInterpreter]: Interpreting procedure init_model with input of size 41 for LOIs [2019-10-07 17:14:27,515 INFO L199 IcfgInterpreter]: Interpreting procedure start_simulation with input of size 68 for LOIs [2019-10-07 17:14:30,596 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 17:14:30,598 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:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: 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:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 17:14:30,604 INFO L168 Benchmark]: Toolchain (without parser) took 9581.56 ms. Allocated memory was 143.7 MB in the beginning and 407.4 MB in the end (delta: 263.7 MB). Free memory was 99.9 MB in the beginning and 232.9 MB in the end (delta: -132.9 MB). Peak memory consumption was 130.8 MB. Max. memory is 7.1 GB. [2019-10-07 17:14:30,605 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 143.7 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 17:14:30,606 INFO L168 Benchmark]: CACSL2BoogieTranslator took 440.49 ms. Allocated memory was 143.7 MB in the beginning and 199.2 MB in the end (delta: 55.6 MB). Free memory was 99.7 MB in the beginning and 176.2 MB in the end (delta: -76.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2019-10-07 17:14:30,607 INFO L168 Benchmark]: Boogie Preprocessor took 42.00 ms. Allocated memory is still 199.2 MB. Free memory was 176.2 MB in the beginning and 173.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2019-10-07 17:14:30,608 INFO L168 Benchmark]: RCFGBuilder took 906.66 ms. Allocated memory is still 199.2 MB. Free memory was 173.6 MB in the beginning and 118.2 MB in the end (delta: 55.3 MB). Peak memory consumption was 55.3 MB. Max. memory is 7.1 GB. [2019-10-07 17:14:30,609 INFO L168 Benchmark]: TraceAbstraction took 8187.53 ms. Allocated memory was 199.2 MB in the beginning and 407.4 MB in the end (delta: 208.1 MB). Free memory was 118.2 MB in the beginning and 232.9 MB in the end (delta: -114.6 MB). Peak memory consumption was 93.5 MB. Max. memory is 7.1 GB. [2019-10-07 17:14:30,613 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 143.7 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 440.49 ms. Allocated memory was 143.7 MB in the beginning and 199.2 MB in the end (delta: 55.6 MB). Free memory was 99.7 MB in the beginning and 176.2 MB in the end (delta: -76.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.00 ms. Allocated memory is still 199.2 MB. Free memory was 176.2 MB in the beginning and 173.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 906.66 ms. Allocated memory is still 199.2 MB. Free memory was 173.6 MB in the beginning and 118.2 MB in the end (delta: 55.3 MB). Peak memory consumption was 55.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8187.53 ms. Allocated memory was 199.2 MB in the beginning and 407.4 MB in the end (delta: 208.1 MB). Free memory was 118.2 MB in the beginning and 232.9 MB in the end (delta: -114.6 MB). Peak memory consumption was 93.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: 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:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...