/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/systemc/pc_sfifo_2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 02:25:06,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:25:06,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:25:06,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 02:25:06,314 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 02:25:06,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 02:25:06,317 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 02:25:06,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 02:25:06,322 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 02:25:06,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 02:25:06,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 02:25:06,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 02:25:06,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 02:25:06,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 02:25:06,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 02:25:06,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 02:25:06,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 02:25:06,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 02:25:06,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 02:25:06,358 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 02:25:06,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 02:25:06,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 02:25:06,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 02:25:06,377 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 02:25:06,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 02:25:06,394 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-22 02:25:06,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-22 02:25:06,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-22 02:25:06,399 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-22 02:25:06,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-22 02:25:06,401 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-22 02:25:06,402 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-22 02:25:06,403 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-22 02:25:06,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 02:25:06,404 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 02:25:06,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 02:25:06,413 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 02:25:06,441 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:25:06,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:25:06,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:25:06,447 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 02:25:06,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:25:06,447 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 02:25:06,447 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:25:06,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:25:06,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:25:06,448 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:25:06,450 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 02:25:06,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:25:06,450 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:25:06,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:25:06,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:25:06,451 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:25:06,451 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:25:06,452 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:25:06,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:25:06,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:25:06,453 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:25:06,453 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:25:06,453 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:25:06,453 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:25:06,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:25:06,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:25:06,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:25:06,959 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:25:06,959 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:25:06,962 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pc_sfifo_2.cil-2.c [2021-02-22 02:25:07,052 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea1106a95/74565c142ae04aadb35caa1f3c1a8dce/FLAG782c07ba1 [2021-02-22 02:25:07,714 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:25:07,714 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/pc_sfifo_2.cil-2.c [2021-02-22 02:25:07,734 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea1106a95/74565c142ae04aadb35caa1f3c1a8dce/FLAG782c07ba1 [2021-02-22 02:25:08,058 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea1106a95/74565c142ae04aadb35caa1f3c1a8dce [2021-02-22 02:25:08,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:25:08,080 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:25:08,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:25:08,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:25:08,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:25:08,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:25:08" (1/1) ... [2021-02-22 02:25:08,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2629607c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:25:08, skipping insertion in model container [2021-02-22 02:25:08,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:25:08" (1/1) ... [2021-02-22 02:25:08,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:25:08,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:25:08,373 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/pc_sfifo_2.cil-2.c[338,351] [2021-02-22 02:25:08,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:25:08,452 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:25:08,473 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/pc_sfifo_2.cil-2.c[338,351] [2021-02-22 02:25:08,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:25:08,525 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:25:08,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:25:08 WrapperNode [2021-02-22 02:25:08,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:25:08,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:25:08,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:25:08,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:25:08,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:25:08" (1/1) ... [2021-02-22 02:25:08,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:25:08" (1/1) ... [2021-02-22 02:25:08,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:25:08" (1/1) ... [2021-02-22 02:25:08,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:25:08" (1/1) ... [2021-02-22 02:25:08,563 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:25:08" (1/1) ... [2021-02-22 02:25:08,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:25:08" (1/1) ... [2021-02-22 02:25:08,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:25:08" (1/1) ... [2021-02-22 02:25:08,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:25:08,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:25:08,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:25:08,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:25:08,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:25:08" (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 [2021-02-22 02:25:08,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:25:08,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:25:08,711 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:25:08,711 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-02-22 02:25:08,711 INFO L138 BoogieDeclarations]: Found implementation of procedure update_fifo_q [2021-02-22 02:25:08,711 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-02-22 02:25:08,711 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-02-22 02:25:08,712 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2021-02-22 02:25:08,712 INFO L138 BoogieDeclarations]: Found implementation of procedure do_write_p [2021-02-22 02:25:08,713 INFO L138 BoogieDeclarations]: Found implementation of procedure do_read_c [2021-02-22 02:25:08,713 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-02-22 02:25:08,713 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2021-02-22 02:25:08,713 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-02-22 02:25:08,714 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-02-22 02:25:08,714 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-02-22 02:25:08,715 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-02-22 02:25:08,715 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2021-02-22 02:25:08,716 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2021-02-22 02:25:08,716 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2021-02-22 02:25:08,718 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2021-02-22 02:25:08,719 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:25:08,719 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:25:08,720 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:25:08,720 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:25:08,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:25:08,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 02:25:08,720 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-02-22 02:25:08,721 INFO L130 BoogieDeclarations]: Found specification of procedure update_fifo_q [2021-02-22 02:25:08,721 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-02-22 02:25:08,721 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-02-22 02:25:08,721 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2021-02-22 02:25:08,721 INFO L130 BoogieDeclarations]: Found specification of procedure do_write_p [2021-02-22 02:25:08,721 INFO L130 BoogieDeclarations]: Found specification of procedure do_read_c [2021-02-22 02:25:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-02-22 02:25:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2021-02-22 02:25:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-02-22 02:25:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-02-22 02:25:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-02-22 02:25:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-02-22 02:25:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2021-02-22 02:25:08,723 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2021-02-22 02:25:08,723 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2021-02-22 02:25:08,723 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2021-02-22 02:25:08,723 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:25:08,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:25:08,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:25:08,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:25:08,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:25:08,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:25:08,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:25:09,385 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:25:09,385 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-22 02:25:09,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:25:09 BoogieIcfgContainer [2021-02-22 02:25:09,388 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:25:09,390 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:25:09,390 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:25:09,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:25:09,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:25:08" (1/3) ... [2021-02-22 02:25:09,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e7d9e06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:25:09, skipping insertion in model container [2021-02-22 02:25:09,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:25:08" (2/3) ... [2021-02-22 02:25:09,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e7d9e06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:25:09, skipping insertion in model container [2021-02-22 02:25:09,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:25:09" (3/3) ... [2021-02-22 02:25:09,397 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-2.c [2021-02-22 02:25:09,405 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:25:09,411 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 02:25:09,431 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 02:25:09,456 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:25:09,457 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:25:09,457 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:25:09,457 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:25:09,457 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:25:09,457 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:25:09,457 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:25:09,458 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:25:09,481 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2021-02-22 02:25:09,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-02-22 02:25:09,499 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:25:09,501 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] [2021-02-22 02:25:09,501 INFO L428 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:25:09,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:25:09,508 INFO L82 PathProgramCache]: Analyzing trace with hash 706464413, now seen corresponding path program 1 times [2021-02-22 02:25:09,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:25:09,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263953040] [2021-02-22 02:25:09,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:25:09,609 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:25:09,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:25:09,822 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:25:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:25:09,897 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:25:09,980 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 02:25:09,981 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 02:25:09,982 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:25:10,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 02:25:10 BoogieIcfgContainer [2021-02-22 02:25:10,010 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 02:25:10,013 INFO L168 Benchmark]: Toolchain (without parser) took 1946.37 ms. Allocated memory is still 153.1 MB. Free memory was 128.9 MB in the beginning and 88.4 MB in the end (delta: 40.5 MB). Peak memory consumption was 41.2 MB. Max. memory is 8.0 GB. [2021-02-22 02:25:10,014 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 153.1 MB. Free memory was 126.7 MB in the beginning and 126.5 MB in the end (delta: 215.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:25:10,015 INFO L168 Benchmark]: CACSL2BoogieTranslator took 438.89 ms. Allocated memory is still 153.1 MB. Free memory was 127.9 MB in the beginning and 115.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-02-22 02:25:10,016 INFO L168 Benchmark]: Boogie Preprocessor took 52.91 ms. Allocated memory is still 153.1 MB. Free memory was 115.3 MB in the beginning and 113.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 02:25:10,017 INFO L168 Benchmark]: RCFGBuilder took 806.81 ms. Allocated memory is still 153.1 MB. Free memory was 113.3 MB in the beginning and 114.1 MB in the end (delta: -858.3 kB). Peak memory consumption was 22.3 MB. Max. memory is 8.0 GB. [2021-02-22 02:25:10,018 INFO L168 Benchmark]: TraceAbstraction took 620.04 ms. Allocated memory is still 153.1 MB. Free memory was 113.6 MB in the beginning and 88.4 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. [2021-02-22 02:25:10,022 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 153.1 MB. Free memory was 126.7 MB in the beginning and 126.5 MB in the end (delta: 215.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 438.89 ms. Allocated memory is still 153.1 MB. Free memory was 127.9 MB in the beginning and 115.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 52.91 ms. Allocated memory is still 153.1 MB. Free memory was 115.3 MB in the beginning and 113.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 806.81 ms. Allocated memory is still 153.1 MB. Free memory was 113.3 MB in the beginning and 114.1 MB in the end (delta: -858.3 kB). Peak memory consumption was 22.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 620.04 ms. Allocated memory is still 153.1 MB. Free memory was 113.6 MB in the beginning and 88.4 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: 12]: a call to reach_error is reachable a call to reach_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] 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=237occurred 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...