/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/systemc/pc_sfifo_3.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 00:22:57,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 00:22:57,714 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 00:22:57,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 00:22:57,770 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 00:22:57,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 00:22:57,780 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 00:22:57,787 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 00:22:57,791 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 00:22:57,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 00:22:57,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 00:22:57,800 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 00:22:57,801 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 00:22:57,804 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 00:22:57,807 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 00:22:57,808 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 00:22:57,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 00:22:57,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 00:22:57,823 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 00:22:57,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 00:22:57,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 00:22:57,833 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 00:22:57,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 00:22:57,837 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 00:22:57,849 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-22 00:22:57,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-22 00:22:57,850 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-22 00:22:57,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-22 00:22:57,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-22 00:22:57,855 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-22 00:22:57,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-22 00:22:57,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-22 00:22:57,859 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-22 00:22:57,860 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-22 00:22:57,861 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-22 00:22:57,861 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-22 00:22:57,862 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-22 00:22:57,862 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-22 00:22:57,862 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 00:22:57,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 00:22:57,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 00:22:57,865 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-22 00:22:57,886 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 00:22:57,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 00:22:57,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 00:22:57,892 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 00:22:57,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 00:22:57,892 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 00:22:57,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 00:22:57,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 00:22:57,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 00:22:57,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 00:22:57,894 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 00:22:57,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 00:22:57,894 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 00:22:57,895 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 00:22:57,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 00:22:57,895 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 00:22:57,895 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 00:22:57,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 00:22:57,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 00:22:57,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 00:22:57,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 00:22:57,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 00:22:57,896 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-22 00:22:58,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 00:22:58,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 00:22:58,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 00:22:58,385 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 00:22:58,389 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 00:22:58,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pc_sfifo_3.cil.c [2021-02-22 00:22:58,480 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3041d49b4/5d0112fcc914426ea10ce27cfe42b4c0/FLAG07a813ca7 [2021-02-22 00:22:59,192 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 00:22:59,193 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/pc_sfifo_3.cil.c [2021-02-22 00:22:59,212 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3041d49b4/5d0112fcc914426ea10ce27cfe42b4c0/FLAG07a813ca7 [2021-02-22 00:22:59,529 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3041d49b4/5d0112fcc914426ea10ce27cfe42b4c0 [2021-02-22 00:22:59,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 00:22:59,546 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 00:22:59,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 00:22:59,548 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 00:22:59,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 00:22:59,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 12:22:59" (1/1) ... [2021-02-22 00:22:59,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45ea05eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:22:59, skipping insertion in model container [2021-02-22 00:22:59,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 12:22:59" (1/1) ... [2021-02-22 00:22:59,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 00:22:59,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 00:22:59,736 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/pc_sfifo_3.cil.c[335,348] [2021-02-22 00:22:59,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 00:22:59,855 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 00:22:59,874 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/pc_sfifo_3.cil.c[335,348] [2021-02-22 00:22:59,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 00:22:59,967 INFO L208 MainTranslator]: Completed translation [2021-02-22 00:22:59,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:22:59 WrapperNode [2021-02-22 00:22:59,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 00:22:59,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 00:22:59,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 00:22:59,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 00:22:59,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:22:59" (1/1) ... [2021-02-22 00:22:59,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:22:59" (1/1) ... [2021-02-22 00:22:59,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:22:59" (1/1) ... [2021-02-22 00:22:59,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:22:59" (1/1) ... [2021-02-22 00:23:00,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:22:59" (1/1) ... [2021-02-22 00:23:00,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:22:59" (1/1) ... [2021-02-22 00:23:00,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:22:59" (1/1) ... [2021-02-22 00:23:00,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 00:23:00,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 00:23:00,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 00:23:00,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 00:23:00,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:22:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 00:23:00,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 00:23:00,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 00:23:00,195 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 00:23:00,195 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-02-22 00:23:00,196 INFO L138 BoogieDeclarations]: Found implementation of procedure update_fifo_q [2021-02-22 00:23:00,196 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-02-22 00:23:00,197 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-02-22 00:23:00,197 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2021-02-22 00:23:00,197 INFO L138 BoogieDeclarations]: Found implementation of procedure do_write_p [2021-02-22 00:23:00,197 INFO L138 BoogieDeclarations]: Found implementation of procedure do_read_c [2021-02-22 00:23:00,198 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-02-22 00:23:00,198 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2021-02-22 00:23:00,199 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-02-22 00:23:00,199 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-02-22 00:23:00,199 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-02-22 00:23:00,200 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2021-02-22 00:23:00,200 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2021-02-22 00:23:00,201 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-02-22 00:23:00,201 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2021-02-22 00:23:00,201 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2021-02-22 00:23:00,204 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2021-02-22 00:23:00,204 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2021-02-22 00:23:00,204 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 00:23:00,205 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 00:23:00,205 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 00:23:00,205 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 00:23:00,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 00:23:00,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 00:23:00,206 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-02-22 00:23:00,206 INFO L130 BoogieDeclarations]: Found specification of procedure update_fifo_q [2021-02-22 00:23:00,206 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-02-22 00:23:00,206 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-02-22 00:23:00,206 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2021-02-22 00:23:00,206 INFO L130 BoogieDeclarations]: Found specification of procedure do_write_p [2021-02-22 00:23:00,207 INFO L130 BoogieDeclarations]: Found specification of procedure do_read_c [2021-02-22 00:23:00,207 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-02-22 00:23:00,207 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2021-02-22 00:23:00,207 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-02-22 00:23:00,207 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-02-22 00:23:00,207 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-02-22 00:23:00,208 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2021-02-22 00:23:00,208 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2021-02-22 00:23:00,208 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-02-22 00:23:00,208 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2021-02-22 00:23:00,208 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2021-02-22 00:23:00,208 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2021-02-22 00:23:00,209 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2021-02-22 00:23:00,209 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 00:23:00,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 00:23:00,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 00:23:00,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 00:23:00,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 00:23:00,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 00:23:00,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 00:23:01,199 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L213: ~a_t~0 := ~a~0; [2021-02-22 00:23:01,200 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L211: ~c_dr_st~0 := 2; [2021-02-22 00:23:01,200 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume 1 == ~q_free~0; [2021-02-22 00:23:01,200 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !(1 == ~q_free~0); [2021-02-22 00:23:01,200 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L212: ~c_dr_pc~0 := 2; [2021-02-22 00:23:01,237 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 00:23:01,238 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-22 00:23:01,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 12:23:01 BoogieIcfgContainer [2021-02-22 00:23:01,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 00:23:01,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 00:23:01,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 00:23:01,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 00:23:01,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 12:22:59" (1/3) ... [2021-02-22 00:23:01,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b17de8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 12:23:01, skipping insertion in model container [2021-02-22 00:23:01,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:22:59" (2/3) ... [2021-02-22 00:23:01,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b17de8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 12:23:01, skipping insertion in model container [2021-02-22 00:23:01,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 12:23:01" (3/3) ... [2021-02-22 00:23:01,250 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil.c [2021-02-22 00:23:01,258 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 00:23:01,264 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 00:23:01,286 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 00:23:01,314 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 00:23:01,314 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 00:23:01,314 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-22 00:23:01,314 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 00:23:01,315 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 00:23:01,315 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 00:23:01,315 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 00:23:01,315 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 00:23:01,340 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states. [2021-02-22 00:23:01,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-02-22 00:23:01,360 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:23:01,361 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] [2021-02-22 00:23:01,362 INFO L428 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:23:01,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:23:01,370 INFO L82 PathProgramCache]: Analyzing trace with hash -690017505, now seen corresponding path program 1 times [2021-02-22 00:23:01,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:23:01,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146426568] [2021-02-22 00:23:01,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:23:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 00:23:01,638 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 00:23:01,639 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Proofs are not supported at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.getProof(Scriptor.java:166) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:107) 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:437) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:62) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateAllErrorsAtOnce(TraceAbstractionStarter.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:131) 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) [2021-02-22 00:23:01,645 INFO L168 Benchmark]: Toolchain (without parser) took 2109.32 ms. Allocated memory is still 152.0 MB. Free memory was 127.6 MB in the beginning and 84.4 MB in the end (delta: 43.2 MB). Peak memory consumption was 43.4 MB. Max. memory is 8.0 GB. [2021-02-22 00:23:01,646 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 152.0 MB. Free memory is still 125.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 00:23:01,647 INFO L168 Benchmark]: CACSL2BoogieTranslator took 420.32 ms. Allocated memory is still 152.0 MB. Free memory was 126.5 MB in the beginning and 112.4 MB in the end (delta: 14.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-22 00:23:01,648 INFO L168 Benchmark]: Boogie Preprocessor took 61.81 ms. Allocated memory is still 152.0 MB. Free memory was 112.4 MB in the beginning and 110.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 00:23:01,648 INFO L168 Benchmark]: RCFGBuilder took 1209.21 ms. Allocated memory is still 152.0 MB. Free memory was 110.1 MB in the beginning and 107.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 23.5 MB. Max. memory is 8.0 GB. [2021-02-22 00:23:01,649 INFO L168 Benchmark]: TraceAbstraction took 399.77 ms. Allocated memory is still 152.0 MB. Free memory was 106.9 MB in the beginning and 84.4 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-22 00:23:01,653 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 152.0 MB. Free memory is still 125.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 420.32 ms. Allocated memory is still 152.0 MB. Free memory was 126.5 MB in the beginning and 112.4 MB in the end (delta: 14.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 61.81 ms. Allocated memory is still 152.0 MB. Free memory was 112.4 MB in the beginning and 110.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1209.21 ms. Allocated memory is still 152.0 MB. Free memory was 110.1 MB in the beginning and 107.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 23.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 399.77 ms. Allocated memory is still 152.0 MB. Free memory was 106.9 MB in the beginning and 84.4 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Proofs are not supported de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Proofs are not supported: de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.getProof(Scriptor.java:166) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...