/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/systemc/pc_sfifo_2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 02:15:19,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 02:15:19,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 02:15:19,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 02:15:19,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 02:15:19,414 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 02:15:19,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 02:15:19,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 02:15:19,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 02:15:19,428 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 02:15:19,429 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 02:15:19,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 02:15:19,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 02:15:19,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 02:15:19,439 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 02:15:19,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 02:15:19,442 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 02:15:19,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 02:15:19,451 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 02:15:19,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 02:15:19,461 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 02:15:19,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 02:15:19,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 02:15:19,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 02:15:19,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 02:15:19,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 02:15:19,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 02:15:19,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 02:15:19,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 02:15:19,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 02:15:19,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 02:15:19,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 02:15:19,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 02:15:19,494 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 02:15:19,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 02:15:19,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 02:15:19,496 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 02:15:19,512 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 02:15:19,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 02:15:19,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 02:15:19,514 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 02:15:19,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 02:15:19,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 02:15:19,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 02:15:19,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 02:15:19,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 02:15:19,516 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 02:15:19,516 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 02:15:19,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 02:15:19,516 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 02:15:19,517 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 02:15:19,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 02:15:19,517 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 02:15:19,517 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 02:15:19,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 02:15:19,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 02:15:19,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 02:15:19,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 02:15:19,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 02:15:19,519 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 02:15:19,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 02:15:19,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 02:15:19,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 02:15:19,902 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 02:15:19,903 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 02:15:19,904 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pc_sfifo_2.cil-2.c [2020-11-07 02:15:19,998 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfe0172ca/cf05a8d1f63d4f7b81cda783382d6c86/FLAGfee0cdb6b [2020-11-07 02:15:20,703 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 02:15:20,704 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/pc_sfifo_2.cil-2.c [2020-11-07 02:15:20,716 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfe0172ca/cf05a8d1f63d4f7b81cda783382d6c86/FLAGfee0cdb6b [2020-11-07 02:15:21,027 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfe0172ca/cf05a8d1f63d4f7b81cda783382d6c86 [2020-11-07 02:15:21,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 02:15:21,037 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 02:15:21,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 02:15:21,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 02:15:21,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 02:15:21,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:15:21" (1/1) ... [2020-11-07 02:15:21,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5141ff55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:21, skipping insertion in model container [2020-11-07 02:15:21,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:15:21" (1/1) ... [2020-11-07 02:15:21,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 02:15:21,087 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 02:15:21,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:15:21,303 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 02:15:21,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:15:21,376 INFO L208 MainTranslator]: Completed translation [2020-11-07 02:15:21,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:21 WrapperNode [2020-11-07 02:15:21,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 02:15:21,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 02:15:21,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 02:15:21,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 02:15:21,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:21" (1/1) ... [2020-11-07 02:15:21,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:21" (1/1) ... [2020-11-07 02:15:21,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:21" (1/1) ... [2020-11-07 02:15:21,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:21" (1/1) ... [2020-11-07 02:15:21,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:21" (1/1) ... [2020-11-07 02:15:21,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:21" (1/1) ... [2020-11-07 02:15:21,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:21" (1/1) ... [2020-11-07 02:15:21,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 02:15:21,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 02:15:21,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 02:15:21,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 02:15:21,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:21" (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 [2020-11-07 02:15:21,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 02:15:21,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 02:15:21,503 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 02:15:21,503 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-11-07 02:15:21,504 INFO L138 BoogieDeclarations]: Found implementation of procedure update_fifo_q [2020-11-07 02:15:21,504 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2020-11-07 02:15:21,504 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2020-11-07 02:15:21,504 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2020-11-07 02:15:21,504 INFO L138 BoogieDeclarations]: Found implementation of procedure do_write_p [2020-11-07 02:15:21,505 INFO L138 BoogieDeclarations]: Found implementation of procedure do_read_c [2020-11-07 02:15:21,505 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-11-07 02:15:21,505 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-11-07 02:15:21,505 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-11-07 02:15:21,505 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-11-07 02:15:21,505 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-11-07 02:15:21,506 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-11-07 02:15:21,506 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-11-07 02:15:21,506 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-11-07 02:15:21,506 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-11-07 02:15:21,506 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-11-07 02:15:21,507 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 02:15:21,507 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 02:15:21,507 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 02:15:21,507 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 02:15:21,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 02:15:21,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 02:15:21,508 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-11-07 02:15:21,508 INFO L130 BoogieDeclarations]: Found specification of procedure update_fifo_q [2020-11-07 02:15:21,508 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2020-11-07 02:15:21,508 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2020-11-07 02:15:21,508 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2020-11-07 02:15:21,509 INFO L130 BoogieDeclarations]: Found specification of procedure do_write_p [2020-11-07 02:15:21,509 INFO L130 BoogieDeclarations]: Found specification of procedure do_read_c [2020-11-07 02:15:21,509 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-11-07 02:15:21,509 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-11-07 02:15:21,509 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-11-07 02:15:21,509 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-11-07 02:15:21,510 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-11-07 02:15:21,510 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-11-07 02:15:21,510 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-11-07 02:15:21,510 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-11-07 02:15:21,510 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-11-07 02:15:21,510 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-11-07 02:15:21,511 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 02:15:21,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 02:15:21,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 02:15:21,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 02:15:21,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 02:15:21,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 02:15:21,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 02:15:22,164 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 02:15:22,165 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-07 02:15:22,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:15:22 BoogieIcfgContainer [2020-11-07 02:15:22,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 02:15:22,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 02:15:22,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 02:15:22,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 02:15:22,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:15:21" (1/3) ... [2020-11-07 02:15:22,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2201d3b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:15:22, skipping insertion in model container [2020-11-07 02:15:22,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:21" (2/3) ... [2020-11-07 02:15:22,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2201d3b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:15:22, skipping insertion in model container [2020-11-07 02:15:22,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:15:22" (3/3) ... [2020-11-07 02:15:22,177 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-2.c [2020-11-07 02:15:22,194 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 02:15:22,198 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 02:15:22,211 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 02:15:22,237 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 02:15:22,237 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 02:15:22,237 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 02:15:22,237 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 02:15:22,237 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 02:15:22,238 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 02:15:22,238 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 02:15:22,238 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 02:15:22,260 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states. [2020-11-07 02:15:22,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-11-07 02:15:22,279 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:15:22,280 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:15:22,281 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:15:22,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:15:22,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1416046698, now seen corresponding path program 1 times [2020-11-07 02:15:22,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:15:22,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927866203] [2020-11-07 02:15:22,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:15:22,390 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:15:22,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 02:15:22,573 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 02:15:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 02:15:22,651 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 02:15:22,759 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 02:15:22,760 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 02:15:22,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 02:15:22,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:15:22 BoogieIcfgContainer [2020-11-07 02:15:22,807 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 02:15:22,811 INFO L168 Benchmark]: Toolchain (without parser) took 1776.11 ms. Allocated memory is still 163.6 MB. Free memory was 139.4 MB in the beginning and 93.1 MB in the end (delta: 46.3 MB). Peak memory consumption was 47.5 MB. Max. memory is 8.0 GB. [2020-11-07 02:15:22,812 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 163.6 MB. Free memory is still 136.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 02:15:22,815 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.25 ms. Allocated memory is still 163.6 MB. Free memory was 138.7 MB in the beginning and 126.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-11-07 02:15:22,818 INFO L168 Benchmark]: Boogie Preprocessor took 49.13 ms. Allocated memory is still 163.6 MB. Free memory was 126.1 MB in the beginning and 124.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 02:15:22,819 INFO L168 Benchmark]: RCFGBuilder took 739.69 ms. Allocated memory is still 163.6 MB. Free memory was 124.1 MB in the beginning and 118.3 MB in the end (delta: 5.8 MB). Peak memory consumption was 17.1 MB. Max. memory is 8.0 GB. [2020-11-07 02:15:22,820 INFO L168 Benchmark]: TraceAbstraction took 637.68 ms. Allocated memory is still 163.6 MB. Free memory was 118.3 MB in the beginning and 93.1 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. [2020-11-07 02:15:22,826 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 163.6 MB. Free memory is still 136.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 336.25 ms. Allocated memory is still 163.6 MB. Free memory was 138.7 MB in the beginning and 126.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 49.13 ms. Allocated memory is still 163.6 MB. Free memory was 126.1 MB in the beginning and 124.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 739.69 ms. Allocated memory is still 163.6 MB. Free memory was 124.1 MB in the beginning and 118.3 MB in the end (delta: 5.8 MB). Peak memory consumption was 17.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 637.68 ms. Allocated memory is still 163.6 MB. Free memory was 118.3 MB in the beginning and 93.1 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int q_buf_0 ; [L18] int q_free ; [L19] int q_read_ev ; [L20] int q_write_ev ; [L21] int q_req_up ; [L22] int q_ev ; [L43] int p_num_write ; [L44] int p_last_write ; [L45] int p_dw_st ; [L46] int p_dw_pc ; [L47] int p_dw_i ; [L48] int c_num_read ; [L49] int c_last_read ; [L50] int c_dr_st ; [L51] int c_dr_pc ; [L52] int c_dr_i ; [L156] static int a_t ; [L458] int __retres1 ; [L462] CALL init_model() [L444] q_free = 1 [L445] q_write_ev = 2 [L446] q_read_ev = q_write_ev [L447] p_num_write = 0 [L448] p_dw_pc = 0 [L449] p_dw_i = 1 [L450] c_num_read = 0 [L451] c_dr_pc = 0 [L452] c_dr_i = 1 [L462] RET init_model() [L463] CALL start_simulation() [L398] int kernel_st ; [L399] int tmp ; [L403] kernel_st = 0 [L404] CALL update_channels() [L214] COND FALSE !((int )q_req_up == 1) [L404] RET update_channels() [L405] CALL init_threads() [L229] COND TRUE (int )p_dw_i == 1 [L230] p_dw_st = 0 [L234] COND TRUE (int )c_dr_i == 1 [L235] c_dr_st = 0 [L405] RET init_threads() [L406] CALL fire_delta_events() [L267] COND FALSE !((int )q_read_ev == 0) [L272] COND FALSE !((int )q_write_ev == 0) [L406] RET fire_delta_events() [L407] CALL activate_threads() [L300] int tmp ; [L301] int tmp___0 ; [L305] CALL, EXPR is_do_write_p_triggered() [L54] int __retres1 ; [L57] COND FALSE !((int )p_dw_pc == 1) [L67] __retres1 = 0 [L69] return (__retres1); [L305] RET, EXPR is_do_write_p_triggered() [L305] tmp = is_do_write_p_triggered() [L307] COND FALSE !(\read(tmp)) [L313] CALL, EXPR is_do_read_c_triggered() [L73] int __retres1 ; [L76] COND FALSE !((int )c_dr_pc == 1) [L86] __retres1 = 0 [L88] return (__retres1); [L313] RET, EXPR is_do_read_c_triggered() [L313] tmp___0 = is_do_read_c_triggered() [L315] COND FALSE !(\read(tmp___0)) [L407] RET activate_threads() [L408] CALL reset_delta_events() [L285] COND FALSE !((int )q_read_ev == 1) [L290] COND FALSE !((int )q_write_ev == 1) [L408] RET reset_delta_events() [L411] COND TRUE 1 [L414] kernel_st = 1 [L415] CALL eval() [L325] int tmp ; [L326] int tmp___0 ; [L327] int tmp___1 ; [L331] COND TRUE 1 [L334] CALL, EXPR exists_runnable_thread() [L244] int __retres1 ; [L247] COND TRUE (int )p_dw_st == 0 [L248] __retres1 = 1 [L260] return (__retres1); [L334] RET, EXPR exists_runnable_thread() [L334] tmp___1 = exists_runnable_thread() [L336] COND TRUE \read(tmp___1) [L341] COND TRUE (int )p_dw_st == 0 [L343] tmp = __VERIFIER_nondet_int() [L345] COND FALSE !(\read(tmp)) [L351] CALL error() [L12] CALL reach_error() [L3] __assert_fail("0", "pc_sfifo_2.cil-2.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 21 procedures, 243 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=240occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...