/usr/bin/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/token_ring.01.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 23:03:09,277 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 23:03:09,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 23:03:09,323 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 23:03:09,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 23:03:09,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 23:03:09,326 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 23:03:09,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 23:03:09,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 23:03:09,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 23:03:09,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 23:03:09,333 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 23:03:09,334 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 23:03:09,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 23:03:09,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 23:03:09,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 23:03:09,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 23:03:09,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 23:03:09,342 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 23:03:09,344 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 23:03:09,346 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 23:03:09,347 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 23:03:09,349 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 23:03:09,350 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 23:03:09,352 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-27 23:03:09,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-27 23:03:09,353 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-27 23:03:09,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-27 23:03:09,355 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-27 23:03:09,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-27 23:03:09,356 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-27 23:03:09,357 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-27 23:03:09,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-27 23:03:09,362 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-27 23:03:09,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-27 23:03:09,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-27 23:03:09,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-27 23:03:09,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-27 23:03:09,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 23:03:09,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 23:03:09,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 23:03:09,369 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-27 23:03:09,396 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 23:03:09,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 23:03:09,397 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 23:03:09,397 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 23:03:09,398 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 23:03:09,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 23:03:09,398 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 23:03:09,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 23:03:09,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 23:03:09,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 23:03:09,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 23:03:09,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 23:03:09,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 23:03:09,399 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 23:03:09,400 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 23:03:09,400 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 23:03:09,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 23:03:09,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 23:03:09,401 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 23:03:09,401 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 23:03:09,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 23:03:09,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 23:03:09,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 23:03:09,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 23:03:09,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 23:03:09,402 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 23:03:09,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 23:03:09,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 23:03:09,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 23:03:09,403 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> interpolation-heuristic=FIRST;log-additional-information=true; [2020-08-27 23:03:09,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 23:03:09,969 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 23:03:09,974 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 23:03:09,976 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 23:03:09,976 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 23:03:09,979 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.01.cil-1.c [2020-08-27 23:03:10,075 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a41083517/e3319cf83ca24cf4ba20652c5ede7021/FLAG7fe9b1683 [2020-08-27 23:03:10,667 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 23:03:10,669 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/token_ring.01.cil-1.c [2020-08-27 23:03:10,690 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a41083517/e3319cf83ca24cf4ba20652c5ede7021/FLAG7fe9b1683 [2020-08-27 23:03:10,967 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a41083517/e3319cf83ca24cf4ba20652c5ede7021 [2020-08-27 23:03:10,980 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 23:03:10,982 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 23:03:10,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 23:03:10,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 23:03:10,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 23:03:10,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:03:10" (1/1) ... [2020-08-27 23:03:10,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1afef70d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:03:10, skipping insertion in model container [2020-08-27 23:03:10,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:03:10" (1/1) ... [2020-08-27 23:03:11,003 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 23:03:11,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 23:03:11,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 23:03:11,338 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 23:03:11,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 23:03:11,486 INFO L208 MainTranslator]: Completed translation [2020-08-27 23:03:11,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:03:11 WrapperNode [2020-08-27 23:03:11,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 23:03:11,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 23:03:11,488 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 23:03:11,489 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 23:03:11,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:03:11" (1/1) ... [2020-08-27 23:03:11,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:03:11" (1/1) ... [2020-08-27 23:03:11,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:03:11" (1/1) ... [2020-08-27 23:03:11,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:03:11" (1/1) ... [2020-08-27 23:03:11,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:03:11" (1/1) ... [2020-08-27 23:03:11,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:03:11" (1/1) ... [2020-08-27 23:03:11,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:03:11" (1/1) ... [2020-08-27 23:03:11,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 23:03:11,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 23:03:11,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 23:03:11,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 23:03:11,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:03:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-27 23:03:11,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 23:03:11,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 23:03:11,614 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-27 23:03:11,614 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-08-27 23:03:11,614 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-08-27 23:03:11,615 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-08-27 23:03:11,615 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-08-27 23:03:11,615 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-27 23:03:11,615 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-27 23:03:11,615 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-27 23:03:11,616 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-27 23:03:11,616 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-27 23:03:11,617 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-27 23:03:11,617 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-27 23:03:11,617 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-08-27 23:03:11,618 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-08-27 23:03:11,618 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-08-27 23:03:11,618 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-27 23:03:11,618 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-27 23:03:11,618 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-27 23:03:11,619 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 23:03:11,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 23:03:11,619 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-27 23:03:11,619 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-08-27 23:03:11,619 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-08-27 23:03:11,620 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-08-27 23:03:11,620 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-27 23:03:11,621 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-08-27 23:03:11,621 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-08-27 23:03:11,621 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-27 23:03:11,621 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-27 23:03:11,621 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-27 23:03:11,621 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-27 23:03:11,622 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-27 23:03:11,622 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-27 23:03:11,623 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-27 23:03:11,623 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-08-27 23:03:11,623 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-08-27 23:03:11,623 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-27 23:03:11,623 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-27 23:03:11,623 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-27 23:03:11,623 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 23:03:11,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 23:03:11,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 23:03:12,125 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 23:03:12,125 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-27 23:03:12,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:03:12 BoogieIcfgContainer [2020-08-27 23:03:12,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 23:03:12,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 23:03:12,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 23:03:12,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 23:03:12,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 11:03:10" (1/3) ... [2020-08-27 23:03:12,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b93ac5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:03:12, skipping insertion in model container [2020-08-27 23:03:12,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:03:11" (2/3) ... [2020-08-27 23:03:12,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b93ac5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:03:12, skipping insertion in model container [2020-08-27 23:03:12,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:03:12" (3/3) ... [2020-08-27 23:03:12,142 INFO L109 eAbstractionObserver]: Analyzing ICFG token_ring.01.cil-1.c [2020-08-27 23:03:12,155 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 23:03:12,166 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 23:03:12,189 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 23:03:12,222 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 23:03:12,222 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 23:03:12,222 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 23:03:12,222 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 23:03:12,223 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 23:03:12,223 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 23:03:12,223 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 23:03:12,223 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 23:03:12,255 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states. [2020-08-27 23:03:12,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-27 23:03:12,267 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 23:03:12,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 23:03:12,269 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 23:03:12,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 23:03:12,278 INFO L82 PathProgramCache]: Analyzing trace with hash 205618956, now seen corresponding path program 1 times [2020-08-27 23:03:12,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 23:03:12,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867446067] [2020-08-27 23:03:12,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 23:03:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 23:03:12,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 23:03:12,505 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Proof production must be enabled (you can do this via setOption). at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:211) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:170) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:106) 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.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) 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$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-08-27 23:03:12,513 INFO L168 Benchmark]: Toolchain (without parser) took 1529.30 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 101.5 MB in the beginning and 129.4 MB in the end (delta: -27.8 MB). Peak memory consumption was 34.0 MB. Max. memory is 7.1 GB. [2020-08-27 23:03:12,514 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-27 23:03:12,515 INFO L168 Benchmark]: CACSL2BoogieTranslator took 505.24 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 101.3 MB in the beginning and 177.4 MB in the end (delta: -76.1 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2020-08-27 23:03:12,516 INFO L168 Benchmark]: Boogie Preprocessor took 53.46 ms. Allocated memory is still 199.8 MB. Free memory was 177.4 MB in the beginning and 175.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-08-27 23:03:12,517 INFO L168 Benchmark]: RCFGBuilder took 590.13 ms. Allocated memory is still 199.8 MB. Free memory was 175.3 MB in the beginning and 143.7 MB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2020-08-27 23:03:12,518 INFO L168 Benchmark]: TraceAbstraction took 375.33 ms. Allocated memory is still 199.8 MB. Free memory was 143.7 MB in the beginning and 129.4 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-08-27 23:03:12,523 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 505.24 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 101.3 MB in the beginning and 177.4 MB in the end (delta: -76.1 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.46 ms. Allocated memory is still 199.8 MB. Free memory was 177.4 MB in the beginning and 175.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 590.13 ms. Allocated memory is still 199.8 MB. Free memory was 175.3 MB in the beginning and 143.7 MB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 375.33 ms. Allocated memory is still 199.8 MB. Free memory was 143.7 MB in the beginning and 129.4 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Proof production must be enabled (you can do this via setOption). de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Proof production must be enabled (you can do this via setOption).: de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...