/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_3.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 22:05:26,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 22:05:26,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 22:05:26,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 22:05:26,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 22:05:26,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 22:05:26,723 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 22:05:26,732 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 22:05:26,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 22:05:26,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 22:05:26,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 22:05:26,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 22:05:26,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 22:05:26,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 22:05:26,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 22:05:26,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 22:05:26,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 22:05:26,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 22:05:26,782 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 22:05:26,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 22:05:26,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 22:05:26,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 22:05:26,797 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 22:05:26,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 22:05:26,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 22:05:26,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 22:05:26,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 22:05:26,811 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 22:05:26,812 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 22:05:26,813 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 22:05:26,814 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 22:05:26,815 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 22:05:26,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 22:05:26,818 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 22:05:26,819 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 22:05:26,819 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 22:05:26,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 22:05:26,820 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 22:05:26,821 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 22:05:26,822 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 22:05:26,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 22:05:26,824 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 22:05:26,847 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 22:05:26,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 22:05:26,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 22:05:26,853 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 22:05:26,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 22:05:26,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 22:05:26,854 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 22:05:26,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 22:05:26,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 22:05:26,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 22:05:26,855 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 22:05:26,856 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 22:05:26,856 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 22:05:26,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 22:05:26,857 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 22:05:26,857 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 22:05:26,857 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 22:05:26,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 22:05:26,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 22:05:26,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 22:05:26,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 22:05:26,858 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 22:05:26,859 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 22:05:27,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 22:05:27,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 22:05:27,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 22:05:27,348 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 22:05:27,350 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 22:05:27,351 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pc_sfifo_3.cil.c [2020-10-23 22:05:27,444 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f3a347dc/09449d86591b42dbb93797f25fd69f52/FLAG30dc49429 [2020-10-23 22:05:28,218 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 22:05:28,219 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/pc_sfifo_3.cil.c [2020-10-23 22:05:28,236 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f3a347dc/09449d86591b42dbb93797f25fd69f52/FLAG30dc49429 [2020-10-23 22:05:28,561 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f3a347dc/09449d86591b42dbb93797f25fd69f52 [2020-10-23 22:05:28,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 22:05:28,572 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 22:05:28,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 22:05:28,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 22:05:28,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 22:05:28,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:05:28" (1/1) ... [2020-10-23 22:05:28,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fd93bc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:28, skipping insertion in model container [2020-10-23 22:05:28,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:05:28" (1/1) ... [2020-10-23 22:05:28,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 22:05:28,629 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 22:05:28,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:05:28,919 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 22:05:29,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:05:29,055 INFO L208 MainTranslator]: Completed translation [2020-10-23 22:05:29,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:29 WrapperNode [2020-10-23 22:05:29,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 22:05:29,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 22:05:29,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 22:05:29,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 22:05:29,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:29" (1/1) ... [2020-10-23 22:05:29,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:29" (1/1) ... [2020-10-23 22:05:29,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:29" (1/1) ... [2020-10-23 22:05:29,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:29" (1/1) ... [2020-10-23 22:05:29,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:29" (1/1) ... [2020-10-23 22:05:29,169 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:29" (1/1) ... [2020-10-23 22:05:29,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:29" (1/1) ... [2020-10-23 22:05:29,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 22:05:29,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 22:05:29,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 22:05:29,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 22:05:29,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:29" (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 [2020-10-23 22:05:29,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 22:05:29,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 22:05:29,290 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 22:05:29,290 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-23 22:05:29,290 INFO L138 BoogieDeclarations]: Found implementation of procedure update_fifo_q [2020-10-23 22:05:29,290 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2020-10-23 22:05:29,291 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2020-10-23 22:05:29,291 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2020-10-23 22:05:29,291 INFO L138 BoogieDeclarations]: Found implementation of procedure do_write_p [2020-10-23 22:05:29,291 INFO L138 BoogieDeclarations]: Found implementation of procedure do_read_c [2020-10-23 22:05:29,291 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-10-23 22:05:29,292 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-10-23 22:05:29,292 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-10-23 22:05:29,292 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-10-23 22:05:29,292 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-10-23 22:05:29,292 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-10-23 22:05:29,292 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-10-23 22:05:29,293 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-10-23 22:05:29,293 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-23 22:05:29,293 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-10-23 22:05:29,293 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-23 22:05:29,293 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-10-23 22:05:29,294 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 22:05:29,294 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 22:05:29,294 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 22:05:29,294 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 22:05:29,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 22:05:29,295 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 22:05:29,295 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-23 22:05:29,295 INFO L130 BoogieDeclarations]: Found specification of procedure update_fifo_q [2020-10-23 22:05:29,295 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2020-10-23 22:05:29,295 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2020-10-23 22:05:29,295 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2020-10-23 22:05:29,296 INFO L130 BoogieDeclarations]: Found specification of procedure do_write_p [2020-10-23 22:05:29,296 INFO L130 BoogieDeclarations]: Found specification of procedure do_read_c [2020-10-23 22:05:29,296 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-10-23 22:05:29,296 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-10-23 22:05:29,296 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-10-23 22:05:29,296 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-10-23 22:05:29,297 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-10-23 22:05:29,297 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-10-23 22:05:29,297 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-10-23 22:05:29,297 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-10-23 22:05:29,297 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-23 22:05:29,298 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-10-23 22:05:29,298 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-23 22:05:29,298 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-10-23 22:05:29,298 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 22:05:29,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 22:05:29,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 22:05:29,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 22:05:29,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 22:05:29,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 22:05:29,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 22:05:30,173 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint L213: ~a_t~0 := ~a~0; [2020-10-23 22:05:30,174 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint L211: ~c_dr_st~0 := 2; [2020-10-23 22:05:30,174 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume 1 == ~q_free~0; [2020-10-23 22:05:30,175 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !(1 == ~q_free~0); [2020-10-23 22:05:30,175 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint L212: ~c_dr_pc~0 := 2; [2020-10-23 22:05:30,219 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 22:05:30,219 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-23 22:05:30,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:05:30 BoogieIcfgContainer [2020-10-23 22:05:30,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 22:05:30,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 22:05:30,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 22:05:30,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 22:05:30,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:05:28" (1/3) ... [2020-10-23 22:05:30,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e342862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:05:30, skipping insertion in model container [2020-10-23 22:05:30,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:29" (2/3) ... [2020-10-23 22:05:30,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e342862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:05:30, skipping insertion in model container [2020-10-23 22:05:30,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:05:30" (3/3) ... [2020-10-23 22:05:30,234 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil.c [2020-10-23 22:05:30,250 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 22:05:30,257 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 22:05:30,276 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 22:05:30,326 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 22:05:30,327 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 22:05:30,327 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 22:05:30,327 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 22:05:30,327 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 22:05:30,327 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 22:05:30,328 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 22:05:30,328 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 22:05:30,388 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states. [2020-10-23 22:05:30,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-23 22:05:30,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:05:30,433 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:05:30,433 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:05:30,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:05:30,453 INFO L82 PathProgramCache]: Analyzing trace with hash 776596738, now seen corresponding path program 1 times [2020-10-23 22:05:30,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:05:30,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763575702] [2020-10-23 22:05:30,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:05:30,575 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:05:30,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:31,220 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-23 22:05:31,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:05:31,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:31,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-23 22:05:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:31,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-23 22:05:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:31,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-23 22:05:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:31,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-23 22:05:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:31,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-23 22:05:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:31,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 22:05:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:31,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-23 22:05:31,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:31,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-23 22:05:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:31,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 22:05:31,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:31,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:05:31,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763575702] [2020-10-23 22:05:31,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:05:31,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-23 22:05:31,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438376947] [2020-10-23 22:05:31,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 22:05:31,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:05:31,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 22:05:31,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-23 22:05:31,720 INFO L87 Difference]: Start difference. First operand 276 states. Second operand 13 states. [2020-10-23 22:05:32,508 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 94 [2020-10-23 22:05:34,169 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-10-23 22:05:34,464 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 95 [2020-10-23 22:05:36,327 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-23 22:05:36,634 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2020-10-23 22:05:40,297 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-23 22:05:41,420 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-23 22:05:48,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:05:48,660 INFO L93 Difference]: Finished difference Result 2156 states and 3118 transitions. [2020-10-23 22:05:48,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2020-10-23 22:05:48,667 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 141 [2020-10-23 22:05:48,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:05:48,721 INFO L225 Difference]: With dead ends: 2156 [2020-10-23 22:05:48,721 INFO L226 Difference]: Without dead ends: 1878 [2020-10-23 22:05:48,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3585 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1275, Invalid=8037, Unknown=0, NotChecked=0, Total=9312 [2020-10-23 22:05:48,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1878 states. [2020-10-23 22:05:49,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1878 to 1316. [2020-10-23 22:05:49,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1316 states. [2020-10-23 22:05:49,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1604 transitions. [2020-10-23 22:05:49,304 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1604 transitions. Word has length 141 [2020-10-23 22:05:49,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:05:49,311 INFO L481 AbstractCegarLoop]: Abstraction has 1316 states and 1604 transitions. [2020-10-23 22:05:49,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 22:05:49,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1604 transitions. [2020-10-23 22:05:49,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-23 22:05:49,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:05:49,326 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:05:49,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 22:05:49,330 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:05:49,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:05:49,331 INFO L82 PathProgramCache]: Analyzing trace with hash 552245753, now seen corresponding path program 1 times [2020-10-23 22:05:49,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:05:49,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614804206] [2020-10-23 22:05:49,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:05:49,339 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:05:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:49,601 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-23 22:05:49,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:05:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:49,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-23 22:05:49,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:49,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-23 22:05:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:49,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-23 22:05:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:49,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-23 22:05:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:49,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-23 22:05:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:49,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 22:05:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:49,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-23 22:05:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:49,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-23 22:05:49,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:49,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 22:05:49,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:49,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:05:49,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614804206] [2020-10-23 22:05:49,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:05:49,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 22:05:49,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109345731] [2020-10-23 22:05:49,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 22:05:49,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:05:49,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 22:05:49,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-23 22:05:49,789 INFO L87 Difference]: Start difference. First operand 1316 states and 1604 transitions. Second operand 9 states. [2020-10-23 22:05:56,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:05:56,553 INFO L93 Difference]: Finished difference Result 5286 states and 8024 transitions. [2020-10-23 22:05:56,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-23 22:05:56,553 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 141 [2020-10-23 22:05:56,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:05:56,597 INFO L225 Difference]: With dead ends: 5286 [2020-10-23 22:05:56,597 INFO L226 Difference]: Without dead ends: 4035 [2020-10-23 22:05:56,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-10-23 22:05:56,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4035 states. [2020-10-23 22:05:57,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4035 to 2556. [2020-10-23 22:05:57,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2556 states. [2020-10-23 22:05:57,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2556 states to 2556 states and 3237 transitions. [2020-10-23 22:05:57,305 INFO L78 Accepts]: Start accepts. Automaton has 2556 states and 3237 transitions. Word has length 141 [2020-10-23 22:05:57,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:05:57,307 INFO L481 AbstractCegarLoop]: Abstraction has 2556 states and 3237 transitions. [2020-10-23 22:05:57,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 22:05:57,307 INFO L276 IsEmpty]: Start isEmpty. Operand 2556 states and 3237 transitions. [2020-10-23 22:05:57,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-23 22:05:57,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:05:57,311 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:05:57,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 22:05:57,311 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:05:57,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:05:57,312 INFO L82 PathProgramCache]: Analyzing trace with hash 517004407, now seen corresponding path program 1 times [2020-10-23 22:05:57,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:05:57,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776620613] [2020-10-23 22:05:57,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:05:57,315 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:05:57,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:57,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:05:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:57,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-23 22:05:57,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:57,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-23 22:05:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:57,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-23 22:05:57,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:57,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-23 22:05:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:57,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-23 22:05:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:57,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 22:05:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:57,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-23 22:05:57,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:57,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-23 22:05:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:57,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 22:05:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:05:57,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:05:57,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776620613] [2020-10-23 22:05:57,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:05:57,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 22:05:57,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755774683] [2020-10-23 22:05:57,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 22:05:57,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:05:57,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 22:05:57,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-23 22:05:57,725 INFO L87 Difference]: Start difference. First operand 2556 states and 3237 transitions. Second operand 9 states. [2020-10-23 22:06:01,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:06:01,064 INFO L93 Difference]: Finished difference Result 5655 states and 7649 transitions. [2020-10-23 22:06:01,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-23 22:06:01,065 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 142 [2020-10-23 22:06:01,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:06:01,092 INFO L225 Difference]: With dead ends: 5655 [2020-10-23 22:06:01,092 INFO L226 Difference]: Without dead ends: 3162 [2020-10-23 22:06:01,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2020-10-23 22:06:01,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3162 states. [2020-10-23 22:06:01,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3162 to 2214. [2020-10-23 22:06:01,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2214 states. [2020-10-23 22:06:01,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2214 states to 2214 states and 2790 transitions. [2020-10-23 22:06:01,622 INFO L78 Accepts]: Start accepts. Automaton has 2214 states and 2790 transitions. Word has length 142 [2020-10-23 22:06:01,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:06:01,623 INFO L481 AbstractCegarLoop]: Abstraction has 2214 states and 2790 transitions. [2020-10-23 22:06:01,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 22:06:01,623 INFO L276 IsEmpty]: Start isEmpty. Operand 2214 states and 2790 transitions. [2020-10-23 22:06:01,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-23 22:06:01,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:06:01,629 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:06:01,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 22:06:01,635 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:06:01,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:06:01,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1450120972, now seen corresponding path program 1 times [2020-10-23 22:06:01,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:06:01,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931613645] [2020-10-23 22:06:01,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:06:01,643 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:06:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:01,834 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-23 22:06:01,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:06:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:01,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-23 22:06:01,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:01,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-23 22:06:01,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:01,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-23 22:06:01,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:01,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-23 22:06:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:01,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-23 22:06:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:02,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 22:06:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:02,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-23 22:06:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:02,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-23 22:06:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:02,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 22:06:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:02,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:06:02,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931613645] [2020-10-23 22:06:02,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:06:02,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 22:06:02,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573805019] [2020-10-23 22:06:02,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 22:06:02,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:06:02,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 22:06:02,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-23 22:06:02,082 INFO L87 Difference]: Start difference. First operand 2214 states and 2790 transitions. Second operand 8 states. [2020-10-23 22:06:06,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:06:06,826 INFO L93 Difference]: Finished difference Result 7538 states and 11031 transitions. [2020-10-23 22:06:06,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-23 22:06:06,826 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 145 [2020-10-23 22:06:06,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:06:06,875 INFO L225 Difference]: With dead ends: 7538 [2020-10-23 22:06:06,875 INFO L226 Difference]: Without dead ends: 5387 [2020-10-23 22:06:06,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2020-10-23 22:06:06,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5387 states. [2020-10-23 22:06:07,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5387 to 3993. [2020-10-23 22:06:07,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3993 states. [2020-10-23 22:06:07,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3993 states to 3993 states and 5140 transitions. [2020-10-23 22:06:07,949 INFO L78 Accepts]: Start accepts. Automaton has 3993 states and 5140 transitions. Word has length 145 [2020-10-23 22:06:07,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:06:07,950 INFO L481 AbstractCegarLoop]: Abstraction has 3993 states and 5140 transitions. [2020-10-23 22:06:07,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 22:06:07,950 INFO L276 IsEmpty]: Start isEmpty. Operand 3993 states and 5140 transitions. [2020-10-23 22:06:07,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-23 22:06:07,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:06:07,955 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:06:07,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 22:06:07,955 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:06:07,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:06:07,956 INFO L82 PathProgramCache]: Analyzing trace with hash 161321136, now seen corresponding path program 1 times [2020-10-23 22:06:07,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:06:07,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364539305] [2020-10-23 22:06:07,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:06:08,081 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-10-23 22:06:08,306 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-10-23 22:06:08,598 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-10-23 22:06:08,773 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-10-23 22:06:08,937 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-10-23 22:06:09,105 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-10-23 22:06:09,276 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-10-23 22:06:09,441 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-10-23 22:06:09,599 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-10-23 22:06:09,781 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2020-10-23 22:06:10,324 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 116 [2020-10-23 22:06:10,722 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 116 [2020-10-23 22:06:10,732 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 22:06:10,967 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 22:06:10,968 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:06:10,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 22:06:10,973 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:448) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:328) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-23 22:06:10,980 INFO L168 Benchmark]: Toolchain (without parser) took 42412.59 ms. Allocated memory was 158.3 MB in the beginning and 751.8 MB in the end (delta: 593.5 MB). Free memory was 134.7 MB in the beginning and 296.9 MB in the end (delta: -162.2 MB). Peak memory consumption was 432.7 MB. Max. memory is 8.0 GB. [2020-10-23 22:06:10,982 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 158.3 MB. Free memory was 132.8 MB in the beginning and 132.7 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 22:06:10,985 INFO L168 Benchmark]: CACSL2BoogieTranslator took 483.06 ms. Allocated memory is still 158.3 MB. Free memory was 134.1 MB in the beginning and 120.1 MB in the end (delta: 14.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-23 22:06:10,989 INFO L168 Benchmark]: Boogie Preprocessor took 126.46 ms. Allocated memory is still 158.3 MB. Free memory was 120.1 MB in the beginning and 118.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 22:06:10,990 INFO L168 Benchmark]: RCFGBuilder took 1038.07 ms. Allocated memory is still 158.3 MB. Free memory was 118.0 MB in the beginning and 103.8 MB in the end (delta: 14.2 MB). Peak memory consumption was 15.5 MB. Max. memory is 8.0 GB. [2020-10-23 22:06:10,991 INFO L168 Benchmark]: TraceAbstraction took 40752.58 ms. Allocated memory was 158.3 MB in the beginning and 751.8 MB in the end (delta: 593.5 MB). Free memory was 103.8 MB in the beginning and 296.9 MB in the end (delta: -193.1 MB). Peak memory consumption was 400.4 MB. Max. memory is 8.0 GB. [2020-10-23 22:06:11,002 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 158.3 MB. Free memory was 132.8 MB in the beginning and 132.7 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 483.06 ms. Allocated memory is still 158.3 MB. Free memory was 134.1 MB in the beginning and 120.1 MB in the end (delta: 14.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 126.46 ms. Allocated memory is still 158.3 MB. Free memory was 120.1 MB in the beginning and 118.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1038.07 ms. Allocated memory is still 158.3 MB. Free memory was 118.0 MB in the beginning and 103.8 MB in the end (delta: 14.2 MB). Peak memory consumption was 15.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 40752.58 ms. Allocated memory was 158.3 MB in the beginning and 751.8 MB in the end (delta: 593.5 MB). Free memory was 103.8 MB in the beginning and 296.9 MB in the end (delta: -193.1 MB). Peak memory consumption was 400.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:448) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...