/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.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 --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/systemc/pc_sfifo_2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 06:32:19,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 06:32:19,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 06:32:19,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 06:32:19,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 06:32:19,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 06:32:19,239 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 06:32:19,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 06:32:19,244 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 06:32:19,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 06:32:19,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 06:32:19,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 06:32:19,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 06:32:19,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 06:32:19,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 06:32:19,259 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 06:32:19,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 06:32:19,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 06:32:19,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 06:32:19,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 06:32:19,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 06:32:19,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 06:32:19,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 06:32:19,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 06:32:19,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 06:32:19,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 06:32:19,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 06:32:19,300 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 06:32:19,300 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 06:32:19,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 06:32:19,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 06:32:19,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 06:32:19,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 06:32:19,304 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 06:32:19,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 06:32:19,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 06:32:19,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 06:32:19,308 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 06:32:19,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 06:32:19,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 06:32:19,310 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 06:32:19,311 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 [2020-10-27 06:32:19,339 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 06:32:19,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 06:32:19,341 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 06:32:19,341 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 06:32:19,342 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 06:32:19,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 06:32:19,342 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 06:32:19,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 06:32:19,343 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 06:32:19,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 06:32:19,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 06:32:19,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 06:32:19,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 06:32:19,344 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 06:32:19,344 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 06:32:19,345 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 06:32:19,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 06:32:19,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 06:32:19,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 06:32:19,346 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 06:32:19,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 06:32:19,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 06:32:19,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 06:32:19,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 06:32:19,347 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 06:32:19,347 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 06:32:19,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 06:32:19,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 06:32:19,348 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 06:32:19,348 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 06:32:19,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 06:32:19,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 06:32:19,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 06:32:19,760 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 06:32:19,761 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 06:32:19,763 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pc_sfifo_2.cil-2.c [2020-10-27 06:32:19,854 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96afa6c26/569cd3e061fa4faa841bc296a6d3bd70/FLAGd330d93c8 [2020-10-27 06:32:20,549 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 06:32:20,550 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/pc_sfifo_2.cil-2.c [2020-10-27 06:32:20,561 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96afa6c26/569cd3e061fa4faa841bc296a6d3bd70/FLAGd330d93c8 [2020-10-27 06:32:20,908 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96afa6c26/569cd3e061fa4faa841bc296a6d3bd70 [2020-10-27 06:32:20,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 06:32:20,923 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 06:32:20,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 06:32:20,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 06:32:20,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 06:32:20,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:32:20" (1/1) ... [2020-10-27 06:32:20,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@94035fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:32:20, skipping insertion in model container [2020-10-27 06:32:20,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:32:20" (1/1) ... [2020-10-27 06:32:20,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 06:32:21,012 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 06:32:21,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:32:21,243 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 06:32:21,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:32:21,324 INFO L208 MainTranslator]: Completed translation [2020-10-27 06:32:21,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:32:21 WrapperNode [2020-10-27 06:32:21,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 06:32:21,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 06:32:21,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 06:32:21,327 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 06:32:21,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:32:21" (1/1) ... [2020-10-27 06:32:21,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:32:21" (1/1) ... [2020-10-27 06:32:21,371 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:32:21" (1/1) ... [2020-10-27 06:32:21,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:32:21" (1/1) ... [2020-10-27 06:32:21,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:32:21" (1/1) ... [2020-10-27 06:32:21,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:32:21" (1/1) ... [2020-10-27 06:32:21,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:32:21" (1/1) ... [2020-10-27 06:32:21,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 06:32:21,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 06:32:21,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 06:32:21,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 06:32:21,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:32:21" (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 [2020-10-27 06:32:21,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 06:32:21,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 06:32:21,531 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 06:32:21,532 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-27 06:32:21,532 INFO L138 BoogieDeclarations]: Found implementation of procedure update_fifo_q [2020-10-27 06:32:21,532 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2020-10-27 06:32:21,532 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2020-10-27 06:32:21,533 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2020-10-27 06:32:21,533 INFO L138 BoogieDeclarations]: Found implementation of procedure do_write_p [2020-10-27 06:32:21,533 INFO L138 BoogieDeclarations]: Found implementation of procedure do_read_c [2020-10-27 06:32:21,533 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-10-27 06:32:21,534 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-10-27 06:32:21,534 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-10-27 06:32:21,534 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-10-27 06:32:21,534 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-10-27 06:32:21,535 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-10-27 06:32:21,535 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-27 06:32:21,535 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-10-27 06:32:21,535 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-27 06:32:21,536 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-10-27 06:32:21,536 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 06:32:21,536 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 06:32:21,536 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 06:32:21,537 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 06:32:21,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 06:32:21,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 06:32:21,537 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-27 06:32:21,537 INFO L130 BoogieDeclarations]: Found specification of procedure update_fifo_q [2020-10-27 06:32:21,538 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2020-10-27 06:32:21,538 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2020-10-27 06:32:21,538 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2020-10-27 06:32:21,538 INFO L130 BoogieDeclarations]: Found specification of procedure do_write_p [2020-10-27 06:32:21,538 INFO L130 BoogieDeclarations]: Found specification of procedure do_read_c [2020-10-27 06:32:21,539 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-10-27 06:32:21,539 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-10-27 06:32:21,539 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-10-27 06:32:21,539 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-10-27 06:32:21,539 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-10-27 06:32:21,540 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-10-27 06:32:21,540 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-27 06:32:21,540 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-10-27 06:32:21,540 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-27 06:32:21,540 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-10-27 06:32:21,541 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 06:32:21,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 06:32:21,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 06:32:21,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 06:32:21,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 06:32:21,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 06:32:21,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 06:32:22,522 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 06:32:22,524 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-27 06:32:22,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:32:22 BoogieIcfgContainer [2020-10-27 06:32:22,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 06:32:22,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 06:32:22,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 06:32:22,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 06:32:22,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:32:20" (1/3) ... [2020-10-27 06:32:22,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@208664f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:32:22, skipping insertion in model container [2020-10-27 06:32:22,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:32:21" (2/3) ... [2020-10-27 06:32:22,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@208664f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:32:22, skipping insertion in model container [2020-10-27 06:32:22,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:32:22" (3/3) ... [2020-10-27 06:32:22,542 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-2.c [2020-10-27 06:32:22,556 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 06:32:22,562 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 06:32:22,578 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 06:32:22,627 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 06:32:22,627 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 06:32:22,627 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 06:32:22,627 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 06:32:22,627 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 06:32:22,628 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 06:32:22,629 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 06:32:22,629 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 06:32:22,663 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states. [2020-10-27 06:32:22,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 06:32:22,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:32:22,683 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] [2020-10-27 06:32:22,683 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:32:22,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:32:22,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1621750076, now seen corresponding path program 1 times [2020-10-27 06:32:22,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:32:22,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004005327] [2020-10-27 06:32:22,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:32:23,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:32:23,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:23,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:23,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:24,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:27,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:32:27,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 06:32:27,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 06:32:27,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4239 [2020-10-27 06:32:27,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:32:27,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 06:32:27,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 06:32:27,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 06:32:27,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 06:32:27,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:32:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:32:27,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:27,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:32:27,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:32:27,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:32:27,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 06:32:27,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:32:27,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:32:27,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:32:27,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:32:27,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:32:27,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:32:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:32:27,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:27,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:32:27,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:32:27,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:32:27,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 06:32:27,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:32:27,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:32:27,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:32:27,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 06:32:27,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:32:27,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 06:32:27,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:32:27,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:27,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:32:27,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:32:27,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:32:27,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 06:32:27,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:32:27,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:32:27,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:32:27,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:32:27,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:32:27,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 06:32:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:32:27,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:27,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:32:27,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:32:27,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:32:27,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 06:32:27,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:32:27,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:32:27,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:32:27,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:32:27,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-27 06:32:27,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 06:32:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:32:27,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:27,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:32:27,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:32:27,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:32:27,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 06:32:27,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:32:27,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:32:27,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:32:27,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 06:32:27,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:32:27,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 06:32:27,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:32:27,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:27,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:27,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:32:27,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 06:32:27,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:32:27,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-27 06:32:27,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:32:27,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:32:27,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:32:27,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 06:32:27,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:32:27,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:32:27,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:32:27,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:27,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:32:27,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 06:32:27,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:32:27,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:32:27,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:32:27,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:32:27,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:32:27,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:32:27,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:32:27,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 06:32:27,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:32:27,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:27,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:32:27,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 06:32:27,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:32:27,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:32:27,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:32:27,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:32:27,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:32:27,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:32:27,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:32:27,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 06:32:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:32:27,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:27,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:32:27,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:32:27,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:32:27,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 06:32:27,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:32:27,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:32:27,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:32:27,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 06:32:27,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:32:27,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 06:32:28,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:32:28,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:28,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:32:28,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:32:28,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:32:28,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:32:28,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:32:28,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:32:28,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 06:32:28,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:32:28,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:32:28,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:32:28,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004005327] [2020-10-27 06:32:28,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:32:28,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 06:32:28,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044958757] [2020-10-27 06:32:28,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 06:32:28,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:32:28,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 06:32:28,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 06:32:28,065 INFO L87 Difference]: Start difference. First operand 142 states. Second operand 11 states. [2020-10-27 06:32:28,352 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-27 06:32:32,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:32:32,876 INFO L93 Difference]: Finished difference Result 570 states and 945 transitions. [2020-10-27 06:32:32,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 06:32:32,878 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-10-27 06:32:32,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:32:32,899 INFO L225 Difference]: With dead ends: 570 [2020-10-27 06:32:32,899 INFO L226 Difference]: Without dead ends: 430 [2020-10-27 06:32:32,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=223, Invalid=589, Unknown=0, NotChecked=0, Total=812 [2020-10-27 06:32:32,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2020-10-27 06:32:33,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 235. [2020-10-27 06:32:33,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-10-27 06:32:33,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 307 transitions. [2020-10-27 06:32:33,083 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 307 transitions. Word has length 71 [2020-10-27 06:32:33,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:32:33,086 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 307 transitions. [2020-10-27 06:32:33,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 06:32:33,086 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 307 transitions. [2020-10-27 06:32:33,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 06:32:33,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:32:33,100 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] [2020-10-27 06:32:33,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 06:32:33,100 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:32:33,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:32:33,102 INFO L82 PathProgramCache]: Analyzing trace with hash 2044451902, now seen corresponding path program 1 times [2020-10-27 06:32:33,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:32:33,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076906238] [2020-10-27 06:32:33,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:32:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:32:33,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:33,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:33,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:34,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:32:34,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 06:32:34,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 06:32:34,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1723 [2020-10-27 06:32:34,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:32:34,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 06:32:34,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 06:32:34,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 06:32:34,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:32:35,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:32:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:32:35,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:35,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:32:35,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:32:35,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:32:35,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 06:32:35,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:32:35,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:32:35,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:32:35,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:32:35,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:32:35,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:32:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:32:35,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:35,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:32:35,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:32:35,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:32:35,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:32:35,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:32:35,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:32:35,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:32:35,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 06:32:35,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:32:35,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 06:32:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:32:35,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:35,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:32:35,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:32:35,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:32:35,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:32:35,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:32:35,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:32:35,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:32:35,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:32:35,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:32:35,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 06:32:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:32:35,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:35,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:32:35,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:32:35,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:32:35,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:32:35,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:32:35,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:32:35,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:32:35,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:32:35,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:32:35,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 06:32:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:32:35,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:35,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:32:35,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:32:35,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:32:35,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:32:35,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:32:35,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:32:35,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:32:35,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 06:32:35,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:32:35,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 06:32:35,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:32:35,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:35,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:35,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:32:35,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 06:32:35,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:32:35,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 06:32:35,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:32:35,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:32:35,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 06:32:35,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:32:35,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:32:35,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:32:35,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:32:35,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:35,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:32:35,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 06:32:35,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:32:35,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:32:35,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:32:35,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:32:35,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:32:35,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:32:35,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:32:35,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 06:32:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:32:35,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:35,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:32:35,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 06:32:35,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:32:35,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:32:35,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:32:35,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:32:35,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:32:35,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:32:35,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:32:35,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 06:32:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:32:35,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:35,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:32:35,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:32:35,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:32:35,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:32:35,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:32:35,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:32:35,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 06:32:35,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:32:35,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:32:35,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 06:32:35,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:32:35,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:35,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:32:35,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:32:35,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:32:35,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:32:35,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:32:35,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:32:35,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 06:32:35,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:32:35,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:32:35,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:32:35,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076906238] [2020-10-27 06:32:35,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:32:35,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 06:32:35,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326345862] [2020-10-27 06:32:35,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 06:32:35,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:32:35,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 06:32:35,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-27 06:32:35,320 INFO L87 Difference]: Start difference. First operand 235 states and 307 transitions. Second operand 14 states. [2020-10-27 06:32:36,830 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-27 06:32:37,660 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 06:32:40,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:32:40,639 INFO L93 Difference]: Finished difference Result 962 states and 1426 transitions. [2020-10-27 06:32:40,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 06:32:40,646 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 71 [2020-10-27 06:32:40,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:32:40,654 INFO L225 Difference]: With dead ends: 962 [2020-10-27 06:32:40,656 INFO L226 Difference]: Without dead ends: 752 [2020-10-27 06:32:40,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 06:32:40,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2020-10-27 06:32:40,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 484. [2020-10-27 06:32:40,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2020-10-27 06:32:40,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 635 transitions. [2020-10-27 06:32:40,773 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 635 transitions. Word has length 71 [2020-10-27 06:32:40,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:32:40,774 INFO L481 AbstractCegarLoop]: Abstraction has 484 states and 635 transitions. [2020-10-27 06:32:40,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 06:32:40,774 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 635 transitions. [2020-10-27 06:32:40,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 06:32:40,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:32:40,776 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] [2020-10-27 06:32:40,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 06:32:40,777 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:32:40,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:32:40,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1824652797, now seen corresponding path program 1 times [2020-10-27 06:32:40,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:32:40,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668159749] [2020-10-27 06:32:40,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:32:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:32:40,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:40,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:32:40,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 06:32:40,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:32:40,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-27 06:32:40,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:32:40,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:32:40,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-27 06:32:40,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:32:40,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:32:41,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:32:41,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:32:41,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:41,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:32:41,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:32:41,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:32:41,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:32:41,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:32:41,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:32:41,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:32:41,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:32:41,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:32:41,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:32:41,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:32:41,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:41,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:32:41,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:32:41,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:32:41,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:32:41,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:32:41,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:32:41,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:32:41,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:32:41,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 06:32:41,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 06:32:41,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:32:41,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:41,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:32:41,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:32:41,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:32:41,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:32:41,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:32:41,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:32:41,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:32:41,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:32:41,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:32:41,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 06:32:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:32:41,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:41,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:32:41,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:32:41,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:32:41,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:32:41,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:32:41,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:32:41,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:32:41,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:32:41,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:32:41,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 06:32:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:32:41,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:41,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:32:41,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:32:41,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:32:41,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:32:41,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:32:41,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:32:41,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:32:41,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:32:41,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:32:41,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 06:32:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:32:41,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:41,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:32:41,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 06:32:41,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:32:41,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 06:32:41,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:32:41,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:32:41,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 06:32:41,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:32:41,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:32:41,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:32:41,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:32:41,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:41,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:32:41,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 06:32:41,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:32:41,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 06:32:41,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:32:41,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:32:41,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:32:41,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:32:41,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:32:41,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 06:32:41,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:32:41,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:41,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:32:41,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 06:32:41,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:32:41,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:32:41,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:32:41,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:32:41,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 06:32:41,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:32:41,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:32:41,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 06:32:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:32:41,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:41,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:32:41,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:32:41,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:32:41,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:32:41,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:32:41,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:32:41,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 06:32:41,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:32:41,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:32:41,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 06:32:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:32:41,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:32:41,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:32:41,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:32:41,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:32:41,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:32:41,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:32:41,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:32:41,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 06:32:41,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:32:41,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:32:41,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:32:41,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668159749] [2020-10-27 06:32:41,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:32:41,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 06:32:41,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65226074] [2020-10-27 06:32:41,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 06:32:41,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:32:41,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 06:32:41,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-27 06:32:41,311 INFO L87 Difference]: Start difference. First operand 484 states and 635 transitions. Second operand 11 states. [2020-10-27 06:32:42,052 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-27 06:32:44,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:32:44,118 INFO L93 Difference]: Finished difference Result 1159 states and 1609 transitions. [2020-10-27 06:32:44,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 06:32:44,119 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-10-27 06:32:44,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:32:44,125 INFO L225 Difference]: With dead ends: 1159 [2020-10-27 06:32:44,126 INFO L226 Difference]: Without dead ends: 716 [2020-10-27 06:32:44,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-27 06:32:44,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2020-10-27 06:32:44,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 494. [2020-10-27 06:32:44,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2020-10-27 06:32:44,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 643 transitions. [2020-10-27 06:32:44,237 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 643 transitions. Word has length 71 [2020-10-27 06:32:44,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:32:44,240 INFO L481 AbstractCegarLoop]: Abstraction has 494 states and 643 transitions. [2020-10-27 06:32:44,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 06:32:44,240 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 643 transitions. [2020-10-27 06:32:44,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 06:32:44,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:32:44,245 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] [2020-10-27 06:32:44,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 06:32:44,245 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:32:44,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:32:44,246 INFO L82 PathProgramCache]: Analyzing trace with hash 980647295, now seen corresponding path program 1 times [2020-10-27 06:32:44,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:32:44,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144549405] [2020-10-27 06:32:44,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:32:44,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 06:32:44,272 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 06:32:44,273 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 06:32:44,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 06:32:44,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 06:32:44 BoogieIcfgContainer [2020-10-27 06:32:44,315 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 06:32:44,319 INFO L168 Benchmark]: Toolchain (without parser) took 23400.51 ms. Allocated memory was 161.5 MB in the beginning and 414.2 MB in the end (delta: 252.7 MB). Free memory was 137.1 MB in the beginning and 164.8 MB in the end (delta: -27.7 MB). Peak memory consumption was 225.5 MB. Max. memory is 8.0 GB. [2020-10-27 06:32:44,320 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 161.5 MB. Free memory was 133.8 MB in the beginning and 133.8 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 06:32:44,322 INFO L168 Benchmark]: CACSL2BoogieTranslator took 398.31 ms. Allocated memory is still 161.5 MB. Free memory was 136.5 MB in the beginning and 123.4 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-27 06:32:44,324 INFO L168 Benchmark]: Boogie Preprocessor took 99.55 ms. Allocated memory is still 161.5 MB. Free memory was 123.4 MB in the beginning and 121.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 06:32:44,326 INFO L168 Benchmark]: RCFGBuilder took 1102.02 ms. Allocated memory is still 161.5 MB. Free memory was 121.3 MB in the beginning and 123.7 MB in the end (delta: -2.4 MB). Peak memory consumption was 14.5 MB. Max. memory is 8.0 GB. [2020-10-27 06:32:44,333 INFO L168 Benchmark]: TraceAbstraction took 21782.55 ms. Allocated memory was 161.5 MB in the beginning and 414.2 MB in the end (delta: 252.7 MB). Free memory was 123.2 MB in the beginning and 164.8 MB in the end (delta: -41.7 MB). Peak memory consumption was 211.1 MB. Max. memory is 8.0 GB. [2020-10-27 06:32:44,342 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 161.5 MB. Free memory was 133.8 MB in the beginning and 133.8 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 398.31 ms. Allocated memory is still 161.5 MB. Free memory was 136.5 MB in the beginning and 123.4 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 99.55 ms. Allocated memory is still 161.5 MB. Free memory was 123.4 MB in the beginning and 121.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1102.02 ms. Allocated memory is still 161.5 MB. Free memory was 121.3 MB in the beginning and 123.7 MB in the end (delta: -2.4 MB). Peak memory consumption was 14.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 21782.55 ms. Allocated memory was 161.5 MB in the beginning and 414.2 MB in the end (delta: 252.7 MB). Free memory was 123.2 MB in the beginning and 164.8 MB in the end (delta: -41.7 MB). Peak memory consumption was 211.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int q_buf_0 ; [L18] int q_free ; [L19] int q_read_ev ; [L20] int q_write_ev ; [L21] int q_req_up ; [L22] int q_ev ; [L43] int p_num_write ; [L44] int p_last_write ; [L45] int p_dw_st ; [L46] int p_dw_pc ; [L47] int p_dw_i ; [L48] int c_num_read ; [L49] int c_last_read ; [L50] int c_dr_st ; [L51] int c_dr_pc ; [L52] int c_dr_i ; [L156] static int a_t ; [L458] int __retres1 ; [L462] CALL init_model() [L444] q_free = 1 [L445] q_write_ev = 2 [L446] q_read_ev = q_write_ev [L447] p_num_write = 0 [L448] p_dw_pc = 0 [L449] p_dw_i = 1 [L450] c_num_read = 0 [L451] c_dr_pc = 0 [L452] c_dr_i = 1 [L462] RET init_model() [L463] CALL start_simulation() [L398] int kernel_st ; [L399] int tmp ; [L403] kernel_st = 0 [L404] CALL update_channels() [L214] COND FALSE !((int )q_req_up == 1) [L404] RET update_channels() [L405] CALL init_threads() [L229] COND TRUE (int )p_dw_i == 1 [L230] p_dw_st = 0 [L234] COND TRUE (int )c_dr_i == 1 [L235] c_dr_st = 0 [L405] RET init_threads() [L406] CALL fire_delta_events() [L267] COND FALSE !((int )q_read_ev == 0) [L272] COND FALSE !((int )q_write_ev == 0) [L406] RET fire_delta_events() [L407] CALL activate_threads() [L300] int tmp ; [L301] int tmp___0 ; [L305] CALL, EXPR is_do_write_p_triggered() [L54] int __retres1 ; [L57] COND FALSE !((int )p_dw_pc == 1) [L67] __retres1 = 0 [L69] return (__retres1); [L305] RET, EXPR is_do_write_p_triggered() [L305] tmp = is_do_write_p_triggered() [L307] COND FALSE !(\read(tmp)) [L313] CALL, EXPR is_do_read_c_triggered() [L73] int __retres1 ; [L76] COND FALSE !((int )c_dr_pc == 1) [L86] __retres1 = 0 [L88] return (__retres1); [L313] RET, EXPR is_do_read_c_triggered() [L313] tmp___0 = is_do_read_c_triggered() [L315] COND FALSE !(\read(tmp___0)) [L407] RET activate_threads() [L408] CALL reset_delta_events() [L285] COND FALSE !((int )q_read_ev == 1) [L290] COND FALSE !((int )q_write_ev == 1) [L408] RET reset_delta_events() [L411] COND TRUE 1 [L414] kernel_st = 1 [L415] CALL eval() [L325] int tmp ; [L326] int tmp___0 ; [L327] int tmp___1 ; [L331] COND TRUE 1 [L334] CALL, EXPR exists_runnable_thread() [L244] int __retres1 ; [L247] COND TRUE (int )p_dw_st == 0 [L248] __retres1 = 1 [L260] return (__retres1); [L334] RET, EXPR exists_runnable_thread() [L334] tmp___1 = exists_runnable_thread() [L336] COND TRUE \read(tmp___1) [L341] COND TRUE (int )p_dw_st == 0 [L343] tmp = __VERIFIER_nondet_int() [L345] COND FALSE !(\read(tmp)) [L351] CALL error() [L12] CALL reach_error() [L3] __assert_fail("0", "pc_sfifo_2.cil-2.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 21 procedures, 144 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 21.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 13.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 408 SDtfs, 1379 SDslu, 672 SDs, 0 SdLazy, 4894 SolverSat, 941 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=494occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 3 MinimizatonAttempts, 685 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 7.6s InterpolantComputationTime, 284 NumberOfCodeBlocks, 284 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 210 ConstructedInterpolants, 0 QuantifiedInterpolants, 53620 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...