/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/pc_sfifo_2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 23:26:40,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 23:26:40,581 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 23:26:40,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 23:26:40,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 23:26:40,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 23:26:40,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 23:26:40,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 23:26:40,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 23:26:40,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 23:26:40,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 23:26:40,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 23:26:40,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 23:26:40,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 23:26:40,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 23:26:40,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 23:26:40,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 23:26:40,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 23:26:40,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 23:26:40,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 23:26:40,632 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 23:26:40,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 23:26:40,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 23:26:40,635 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 23:26:40,638 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-27 23:26:40,638 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-27 23:26:40,638 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-27 23:26:40,639 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-27 23:26:40,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-27 23:26:40,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-27 23:26:40,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-27 23:26:40,642 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-27 23:26:40,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-27 23:26:40,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-27 23:26:40,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-27 23:26:40,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-27 23:26:40,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-27 23:26:40,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-27 23:26:40,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 23:26:40,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 23:26:40,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 23:26:40,650 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-27 23:26:40,676 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 23:26:40,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 23:26:40,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 23:26:40,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 23:26:40,678 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 23:26:40,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 23:26:40,679 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 23:26:40,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 23:26:40,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 23:26:40,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 23:26:40,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 23:26:40,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 23:26:40,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 23:26:40,680 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 23:26:40,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 23:26:40,681 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 23:26:40,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 23:26:40,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 23:26:40,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 23:26:40,681 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 23:26:40,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 23:26:40,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 23:26:40,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 23:26:40,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 23:26:40,682 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 23:26:40,683 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 23:26:40,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 23:26:40,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 23:26:40,683 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 23:26:40,683 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES 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: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-27 23:26:41,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 23:26:41,253 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 23:26:41,261 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 23:26:41,263 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 23:26:41,265 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 23:26:41,266 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pc_sfifo_2.cil-2.c [2020-08-27 23:26:41,339 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3782b8f5/14c34f60b0ff46648e840aa81e5b0054/FLAGdb637baad [2020-08-27 23:26:41,916 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 23:26:41,917 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/pc_sfifo_2.cil-2.c [2020-08-27 23:26:41,931 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3782b8f5/14c34f60b0ff46648e840aa81e5b0054/FLAGdb637baad [2020-08-27 23:26:42,216 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3782b8f5/14c34f60b0ff46648e840aa81e5b0054 [2020-08-27 23:26:42,229 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 23:26:42,231 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 23:26:42,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 23:26:42,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 23:26:42,236 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 23:26:42,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:26:42" (1/1) ... [2020-08-27 23:26:42,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4363b436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:26:42, skipping insertion in model container [2020-08-27 23:26:42,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:26:42" (1/1) ... [2020-08-27 23:26:42,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 23:26:42,293 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 23:26:42,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 23:26:42,541 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 23:26:42,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 23:26:42,620 INFO L208 MainTranslator]: Completed translation [2020-08-27 23:26:42,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:26:42 WrapperNode [2020-08-27 23:26:42,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 23:26:42,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 23:26:42,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 23:26:42,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 23:26:42,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:26:42" (1/1) ... [2020-08-27 23:26:42,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:26:42" (1/1) ... [2020-08-27 23:26:42,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:26:42" (1/1) ... [2020-08-27 23:26:42,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:26:42" (1/1) ... [2020-08-27 23:26:42,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:26:42" (1/1) ... [2020-08-27 23:26:42,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:26:42" (1/1) ... [2020-08-27 23:26:42,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:26:42" (1/1) ... [2020-08-27 23:26:42,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 23:26:42,756 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 23:26:42,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 23:26:42,756 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 23:26:42,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:26:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 23:26:42,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 23:26:42,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 23:26:42,833 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-27 23:26:42,833 INFO L138 BoogieDeclarations]: Found implementation of procedure update_fifo_q [2020-08-27 23:26:42,833 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2020-08-27 23:26:42,834 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2020-08-27 23:26:42,834 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2020-08-27 23:26:42,834 INFO L138 BoogieDeclarations]: Found implementation of procedure do_write_p [2020-08-27 23:26:42,834 INFO L138 BoogieDeclarations]: Found implementation of procedure do_read_c [2020-08-27 23:26:42,834 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-27 23:26:42,835 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-27 23:26:42,835 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-27 23:26:42,835 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-27 23:26:42,835 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-27 23:26:42,835 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-27 23:26:42,836 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-27 23:26:42,836 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-27 23:26:42,836 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-27 23:26:42,836 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-27 23:26:42,836 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 23:26:42,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 23:26:42,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-27 23:26:42,837 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-27 23:26:42,838 INFO L130 BoogieDeclarations]: Found specification of procedure update_fifo_q [2020-08-27 23:26:42,838 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2020-08-27 23:26:42,838 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2020-08-27 23:26:42,838 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2020-08-27 23:26:42,838 INFO L130 BoogieDeclarations]: Found specification of procedure do_write_p [2020-08-27 23:26:42,839 INFO L130 BoogieDeclarations]: Found specification of procedure do_read_c [2020-08-27 23:26:42,839 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-27 23:26:42,839 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-27 23:26:42,839 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-27 23:26:42,839 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-27 23:26:42,839 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-27 23:26:42,840 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-27 23:26:42,840 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-27 23:26:42,841 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-27 23:26:42,841 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-27 23:26:42,841 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-27 23:26:42,841 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 23:26:42,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 23:26:42,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 23:26:43,361 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 23:26:43,361 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-27 23:26:43,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:26:43 BoogieIcfgContainer [2020-08-27 23:26:43,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 23:26:43,370 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 23:26:43,370 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 23:26:43,374 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 23:26:43,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 11:26:42" (1/3) ... [2020-08-27 23:26:43,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ac930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:26:43, skipping insertion in model container [2020-08-27 23:26:43,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:26:42" (2/3) ... [2020-08-27 23:26:43,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ac930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:26:43, skipping insertion in model container [2020-08-27 23:26:43,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:26:43" (3/3) ... [2020-08-27 23:26:43,378 INFO L109 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-2.c [2020-08-27 23:26:43,391 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 23:26:43,404 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 23:26:43,438 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 23:26:43,472 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 23:26:43,472 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 23:26:43,472 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 23:26:43,472 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 23:26:43,473 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 23:26:43,473 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 23:26:43,473 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 23:26:43,473 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 23:26:43,502 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states. [2020-08-27 23:26:43,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-27 23:26:43,515 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 23:26:43,517 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] [2020-08-27 23:26:43,517 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 23:26:43,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 23:26:43,524 INFO L82 PathProgramCache]: Analyzing trace with hash 742963907, now seen corresponding path program 1 times [2020-08-27 23:26:43,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 23:26:43,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589874419] [2020-08-27 23:26:43,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 23:26:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 23:26:43,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 23:26:43,754 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Proof production must be enabled (you can do this via setOption). at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:211) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:170) 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:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) 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:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) 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$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-08-27 23:26:43,763 INFO L168 Benchmark]: Toolchain (without parser) took 1529.93 ms. Allocated memory was 143.1 MB in the beginning and 203.9 MB in the end (delta: 60.8 MB). Free memory was 104.7 MB in the beginning and 133.0 MB in the end (delta: -28.3 MB). Peak memory consumption was 32.6 MB. Max. memory is 7.1 GB. [2020-08-27 23:26:43,764 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 143.1 MB. Free memory was 123.4 MB in the beginning and 123.0 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-08-27 23:26:43,766 INFO L168 Benchmark]: CACSL2BoogieTranslator took 389.63 ms. Allocated memory is still 143.1 MB. Free memory was 104.3 MB in the beginning and 90.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-08-27 23:26:43,768 INFO L168 Benchmark]: Boogie Preprocessor took 133.66 ms. Allocated memory was 143.1 MB in the beginning and 203.9 MB in the end (delta: 60.8 MB). Free memory was 90.7 MB in the beginning and 180.7 MB in the end (delta: -90.0 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-08-27 23:26:43,769 INFO L168 Benchmark]: RCFGBuilder took 612.58 ms. Allocated memory is still 203.9 MB. Free memory was 180.7 MB in the beginning and 149.1 MB in the end (delta: 31.6 MB). Peak memory consumption was 31.6 MB. Max. memory is 7.1 GB. [2020-08-27 23:26:43,770 INFO L168 Benchmark]: TraceAbstraction took 389.06 ms. Allocated memory is still 203.9 MB. Free memory was 149.1 MB in the beginning and 133.0 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2020-08-27 23:26:43,783 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 143.1 MB. Free memory was 123.4 MB in the beginning and 123.0 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 389.63 ms. Allocated memory is still 143.1 MB. Free memory was 104.3 MB in the beginning and 90.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.66 ms. Allocated memory was 143.1 MB in the beginning and 203.9 MB in the end (delta: 60.8 MB). Free memory was 90.7 MB in the beginning and 180.7 MB in the end (delta: -90.0 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 612.58 ms. Allocated memory is still 203.9 MB. Free memory was 180.7 MB in the beginning and 149.1 MB in the end (delta: 31.6 MB). Peak memory consumption was 31.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 389.06 ms. Allocated memory is still 203.9 MB. Free memory was 149.1 MB in the beginning and 133.0 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Proof production must be enabled (you can do this via setOption). de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Proof production must be enabled (you can do this via setOption).: de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...