/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/systemc/pc_sfifo_1.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 19:50:48,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 19:50:48,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 19:50:48,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 19:50:48,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 19:50:48,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 19:50:48,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 19:50:48,879 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 19:50:48,880 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 19:50:48,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 19:50:48,883 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 19:50:48,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 19:50:48,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 19:50:48,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 19:50:48,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 19:50:48,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 19:50:48,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 19:50:48,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 19:50:48,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 19:50:48,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 19:50:48,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 19:50:48,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 19:50:48,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 19:50:48,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 19:50:48,901 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 19:50:48,902 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 19:50:48,902 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 19:50:48,903 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 19:50:48,903 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 19:50:48,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 19:50:48,905 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 19:50:48,906 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 19:50:48,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 19:50:48,907 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 19:50:48,908 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 19:50:48,908 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 19:50:48,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 19:50:48,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 19:50:48,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 19:50:48,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 19:50:48,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 19:50:48,912 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 19:50:48,922 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 19:50:48,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 19:50:48,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 19:50:48,924 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 19:50:48,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 19:50:48,925 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 19:50:48,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 19:50:48,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 19:50:48,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 19:50:48,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 19:50:48,925 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 19:50:48,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 19:50:48,926 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 19:50:48,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 19:50:48,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 19:50:48,926 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 19:50:48,927 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 19:50:48,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 19:50:48,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:50:48,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 19:50:48,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 19:50:48,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 19:50:48,928 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 19:50:49,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 19:50:49,250 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 19:50:49,254 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 19:50:49,256 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 19:50:49,257 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 19:50:49,257 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pc_sfifo_1.cil-1.c [2020-08-22 19:50:49,347 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dda4cd337/fa64d774cea64d50901b9667278afc68/FLAG215791031 [2020-08-22 19:50:49,916 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 19:50:49,916 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/pc_sfifo_1.cil-1.c [2020-08-22 19:50:49,927 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dda4cd337/fa64d774cea64d50901b9667278afc68/FLAG215791031 [2020-08-22 19:50:50,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dda4cd337/fa64d774cea64d50901b9667278afc68 [2020-08-22 19:50:50,253 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 19:50:50,255 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 19:50:50,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 19:50:50,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 19:50:50,261 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 19:50:50,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:50:50" (1/1) ... [2020-08-22 19:50:50,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2720981c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:50, skipping insertion in model container [2020-08-22 19:50:50,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:50:50" (1/1) ... [2020-08-22 19:50:50,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 19:50:50,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 19:50:50,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:50:50,576 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 19:50:50,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:50:50,629 INFO L208 MainTranslator]: Completed translation [2020-08-22 19:50:50,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:50 WrapperNode [2020-08-22 19:50:50,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 19:50:50,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 19:50:50,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 19:50:50,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 19:50:50,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:50" (1/1) ... [2020-08-22 19:50:50,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:50" (1/1) ... [2020-08-22 19:50:50,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:50" (1/1) ... [2020-08-22 19:50:50,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:50" (1/1) ... [2020-08-22 19:50:50,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:50" (1/1) ... [2020-08-22 19:50:50,760 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:50" (1/1) ... [2020-08-22 19:50:50,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:50" (1/1) ... [2020-08-22 19:50:50,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 19:50:50,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 19:50:50,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 19:50:50,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 19:50:50,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:50" (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 [2020-08-22 19:50:50,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 19:50:50,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 19:50:50,833 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-22 19:50:50,833 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2020-08-22 19:50:50,833 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2020-08-22 19:50:50,834 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2020-08-22 19:50:50,834 INFO L138 BoogieDeclarations]: Found implementation of procedure do_write_p [2020-08-22 19:50:50,834 INFO L138 BoogieDeclarations]: Found implementation of procedure do_read_c [2020-08-22 19:50:50,834 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-22 19:50:50,834 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-22 19:50:50,834 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-22 19:50:50,835 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-22 19:50:50,835 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-22 19:50:50,835 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-22 19:50:50,835 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 19:50:50,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 19:50:50,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 19:50:50,836 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-22 19:50:50,836 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2020-08-22 19:50:50,836 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2020-08-22 19:50:50,836 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2020-08-22 19:50:50,836 INFO L130 BoogieDeclarations]: Found specification of procedure do_write_p [2020-08-22 19:50:50,837 INFO L130 BoogieDeclarations]: Found specification of procedure do_read_c [2020-08-22 19:50:50,837 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-22 19:50:50,837 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-22 19:50:50,837 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-22 19:50:50,842 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-22 19:50:50,842 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-22 19:50:50,842 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-22 19:50:50,842 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 19:50:50,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 19:50:50,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 19:50:51,344 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 19:50:51,345 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 19:50:51,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:50:51 BoogieIcfgContainer [2020-08-22 19:50:51,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 19:50:51,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 19:50:51,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 19:50:51,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 19:50:51,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 07:50:50" (1/3) ... [2020-08-22 19:50:51,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241f1955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:50:51, skipping insertion in model container [2020-08-22 19:50:51,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:50" (2/3) ... [2020-08-22 19:50:51,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241f1955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:50:51, skipping insertion in model container [2020-08-22 19:50:51,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:50:51" (3/3) ... [2020-08-22 19:50:51,362 INFO L109 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-1.c [2020-08-22 19:50:51,374 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 19:50:51,383 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 19:50:51,398 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 19:50:51,422 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 19:50:51,422 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 19:50:51,422 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 19:50:51,422 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 19:50:51,423 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 19:50:51,423 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 19:50:51,423 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 19:50:51,424 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 19:50:51,446 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2020-08-22 19:50:51,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-08-22 19:50:51,461 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:50:51,462 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] [2020-08-22 19:50:51,463 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:50:51,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:50:51,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1380535506, now seen corresponding path program 1 times [2020-08-22 19:50:51,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:50:51,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27352757] [2020-08-22 19:50:51,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:50:51,541 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:50:51,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 19:50:51,675 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 19:50:51,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 19:50:51,791 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 19:50:51,859 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 19:50:51,860 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 19:50:51,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 19:50:51,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 07:50:51 BoogieIcfgContainer [2020-08-22 19:50:51,892 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 19:50:51,897 INFO L168 Benchmark]: Toolchain (without parser) took 1638.85 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 101.4 MB in the beginning and 122.8 MB in the end (delta: -21.3 MB). Peak memory consumption was 41.6 MB. Max. memory is 7.1 GB. [2020-08-22 19:50:51,899 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 137.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 19:50:51,900 INFO L168 Benchmark]: CACSL2BoogieTranslator took 373.80 ms. Allocated memory is still 137.4 MB. Free memory was 101.2 MB in the beginning and 88.9 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-08-22 19:50:51,901 INFO L168 Benchmark]: Boogie Preprocessor took 139.18 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 88.9 MB in the beginning and 177.5 MB in the end (delta: -88.6 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-08-22 19:50:51,902 INFO L168 Benchmark]: RCFGBuilder took 582.84 ms. Allocated memory is still 200.3 MB. Free memory was 177.5 MB in the beginning and 145.0 MB in the end (delta: 32.5 MB). Peak memory consumption was 32.5 MB. Max. memory is 7.1 GB. [2020-08-22 19:50:51,904 INFO L168 Benchmark]: TraceAbstraction took 537.57 ms. Allocated memory is still 200.3 MB. Free memory was 144.3 MB in the beginning and 122.8 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-08-22 19:50:51,912 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 137.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 373.80 ms. Allocated memory is still 137.4 MB. Free memory was 101.2 MB in the beginning and 88.9 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 139.18 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 88.9 MB in the beginning and 177.5 MB in the end (delta: -88.6 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 582.84 ms. Allocated memory is still 200.3 MB. Free memory was 177.5 MB in the beginning and 145.0 MB in the end (delta: 32.5 MB). Peak memory consumption was 32.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 537.57 ms. Allocated memory is still 200.3 MB. Free memory was 144.3 MB in the beginning and 122.8 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 9]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int q_buf_0 ; [L15] int q_free ; [L16] int q_read_ev ; [L17] int q_write_ev ; [L18] int p_num_write ; [L19] int p_last_write ; [L20] int p_dw_st ; [L21] int p_dw_pc ; [L22] int p_dw_i ; [L23] int c_num_read ; [L24] int c_last_read ; [L25] int c_dr_st ; [L26] int c_dr_pc ; [L27] int c_dr_i ; [L134] static int a_t ; [L350] int __retres1 ; [L354] CALL init_model() [L336] q_free = 1 [L337] q_write_ev = 2 [L338] q_read_ev = q_write_ev [L339] p_num_write = 0 [L340] p_dw_pc = 0 [L341] p_dw_i = 1 [L342] c_num_read = 0 [L343] c_dr_pc = 0 [L344] c_dr_i = 1 [L354] RET init_model() [L355] CALL start_simulation() [L304] int kernel_st ; [L305] int tmp ; [L309] kernel_st = 0 [L310] CALL init_threads() [L196] COND TRUE (int )p_dw_i == 1 [L197] p_dw_st = 0 [L201] COND TRUE (int )c_dr_i == 1 [L202] c_dr_st = 0 [L310] RET init_threads() [L313] COND TRUE 1 [L316] kernel_st = 1 [L317] CALL eval() [L231] int tmp ; [L232] int tmp___0 ; [L233] int tmp___1 ; [L237] COND TRUE 1 [L240] CALL, EXPR exists_runnable_thread() [L211] int __retres1 ; [L214] COND TRUE (int )p_dw_st == 0 [L215] __retres1 = 1 [L227] return (__retres1); [L240] RET, EXPR exists_runnable_thread() [L240] tmp___1 = exists_runnable_thread() [L242] COND TRUE \read(tmp___1) [L247] COND TRUE (int )p_dw_st == 0 [L249] tmp = __VERIFIER_nondet_int() [L251] COND FALSE !(\read(tmp)) [L257] CALL error() [L9] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 15 procedures, 183 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, 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=183occurred 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...