/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 --rcfgbuilder.size.of.a.code.block SingleStatement --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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --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_1.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:41:31,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:41:31,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:41:31,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:41:31,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:41:31,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:41:31,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:41:31,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:41:31,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:41:31,786 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:41:31,787 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:41:31,788 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:41:31,788 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:41:31,791 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:41:31,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:41:31,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:41:31,798 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:41:31,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:41:31,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:41:31,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:41:31,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:41:31,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:41:31,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:41:31,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:41:31,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:41:31,810 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:41:31,810 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:41:31,811 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:41:31,812 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:41:31,813 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:41:31,813 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:41:31,814 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:41:31,815 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:41:31,816 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:41:31,817 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:41:31,817 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:41:31,818 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:41:31,818 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:41:31,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:41:31,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:41:31,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:41:31,821 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 [2020-09-25 13:41:31,848 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:41:31,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:41:31,850 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:41:31,850 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:41:31,850 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:41:31,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:41:31,851 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:41:31,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:41:31,851 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:41:31,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:41:31,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:41:31,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:41:31,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:41:31,852 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:41:31,852 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:41:31,853 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:41:31,853 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:41:31,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:41:31,853 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:41:31,853 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:41:31,854 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:41:31,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:41:31,854 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:41:31,854 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:41:31,855 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:41:31,855 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:41:31,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:41:31,855 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:41:31,855 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:41:31,856 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.rcfgbuilder: Size of a code block -> SingleStatement 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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:41:32,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:41:32,357 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:41:32,362 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:41:32,364 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:41:32,365 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:41:32,366 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pc_sfifo_1.cil-1.c [2020-09-25 13:41:32,460 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb1760c91/829d5d1d42b1467c8ea37301e1d93e71/FLAG8a4b95dea [2020-09-25 13:41:33,045 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:41:33,046 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/pc_sfifo_1.cil-1.c [2020-09-25 13:41:33,057 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb1760c91/829d5d1d42b1467c8ea37301e1d93e71/FLAG8a4b95dea [2020-09-25 13:41:33,372 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb1760c91/829d5d1d42b1467c8ea37301e1d93e71 [2020-09-25 13:41:33,390 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:41:33,397 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:41:33,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:41:33,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:41:33,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:41:33,407 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:41:33" (1/1) ... [2020-09-25 13:41:33,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78a0aa91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:41:33, skipping insertion in model container [2020-09-25 13:41:33,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:41:33" (1/1) ... [2020-09-25 13:41:33,422 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:41:33,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:41:33,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:41:33,742 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:41:33,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:41:33,855 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:41:33,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:41:33 WrapperNode [2020-09-25 13:41:33,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:41:33,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:41:33,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:41:33,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:41:33,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:41:33" (1/1) ... [2020-09-25 13:41:33,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:41:33" (1/1) ... [2020-09-25 13:41:33,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:41:33" (1/1) ... [2020-09-25 13:41:33,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:41:33" (1/1) ... [2020-09-25 13:41:33,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:41:33" (1/1) ... [2020-09-25 13:41:33,987 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:41:33" (1/1) ... [2020-09-25 13:41:33,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:41:33" (1/1) ... [2020-09-25 13:41:33,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:41:33,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:41:33,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:41:33,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:41:33,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:41:33" (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 [2020-09-25 13:41:34,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:41:34,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:41:34,080 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-09-25 13:41:34,080 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2020-09-25 13:41:34,081 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2020-09-25 13:41:34,081 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2020-09-25 13:41:34,081 INFO L138 BoogieDeclarations]: Found implementation of procedure do_write_p [2020-09-25 13:41:34,082 INFO L138 BoogieDeclarations]: Found implementation of procedure do_read_c [2020-09-25 13:41:34,082 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-09-25 13:41:34,082 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-09-25 13:41:34,083 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-09-25 13:41:34,083 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-09-25 13:41:34,083 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-09-25 13:41:34,083 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-09-25 13:41:34,083 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:41:34,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:41:34,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:41:34,085 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-09-25 13:41:34,085 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2020-09-25 13:41:34,085 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2020-09-25 13:41:34,086 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2020-09-25 13:41:34,087 INFO L130 BoogieDeclarations]: Found specification of procedure do_write_p [2020-09-25 13:41:34,087 INFO L130 BoogieDeclarations]: Found specification of procedure do_read_c [2020-09-25 13:41:34,088 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-09-25 13:41:34,089 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-09-25 13:41:34,090 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-09-25 13:41:34,090 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-09-25 13:41:34,090 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-09-25 13:41:34,090 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-09-25 13:41:34,091 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:41:34,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:41:34,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:41:34,584 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:41:34,585 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-25 13:41:34,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:41:34 BoogieIcfgContainer [2020-09-25 13:41:34,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:41:34,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:41:34,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:41:34,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:41:34,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:41:33" (1/3) ... [2020-09-25 13:41:34,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bc62de6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:41:34, skipping insertion in model container [2020-09-25 13:41:34,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:41:33" (2/3) ... [2020-09-25 13:41:34,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bc62de6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:41:34, skipping insertion in model container [2020-09-25 13:41:34,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:41:34" (3/3) ... [2020-09-25 13:41:34,603 INFO L109 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-1.c [2020-09-25 13:41:34,616 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:41:34,627 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:41:34,651 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:41:34,688 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:41:34,689 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:41:34,689 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:41:34,689 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:41:34,689 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:41:34,689 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:41:34,690 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:41:34,690 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:41:34,721 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2020-09-25 13:41:34,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-25 13:41:34,734 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:41:34,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:41:34,736 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:41:34,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:41:34,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1380535506, now seen corresponding path program 1 times [2020-09-25 13:41:34,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:41:34,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281229963] [2020-09-25 13:41:34,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:41:34,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 13:41:35,002 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 13:41:35,003 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 13:41:35,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:41:35,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:41:35 BoogieIcfgContainer [2020-09-25 13:41:35,031 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 13:41:35,035 INFO L168 Benchmark]: Toolchain (without parser) took 1642.23 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 102.5 MB in the beginning and 129.6 MB in the end (delta: -27.1 MB). Peak memory consumption was 35.3 MB. Max. memory is 7.1 GB. [2020-09-25 13:41:35,036 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 13:41:35,038 INFO L168 Benchmark]: CACSL2BoogieTranslator took 455.34 ms. Allocated memory is still 140.0 MB. Free memory was 101.8 MB in the beginning and 89.6 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-09-25 13:41:35,039 INFO L168 Benchmark]: Boogie Preprocessor took 136.22 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 89.6 MB in the beginning and 179.4 MB in the end (delta: -89.8 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-09-25 13:41:35,040 INFO L168 Benchmark]: RCFGBuilder took 599.94 ms. Allocated memory is still 202.4 MB. Free memory was 179.4 MB in the beginning and 147.5 MB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 7.1 GB. [2020-09-25 13:41:35,041 INFO L168 Benchmark]: TraceAbstraction took 437.58 ms. Allocated memory is still 202.4 MB. Free memory was 146.9 MB in the beginning and 129.6 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. [2020-09-25 13:41:35,045 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 455.34 ms. Allocated memory is still 140.0 MB. Free memory was 101.8 MB in the beginning and 89.6 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 136.22 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 89.6 MB in the beginning and 179.4 MB in the end (delta: -89.8 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 599.94 ms. Allocated memory is still 202.4 MB. Free memory was 179.4 MB in the beginning and 147.5 MB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 437.58 ms. Allocated memory is still 202.4 MB. Free memory was 146.9 MB in the beginning and 129.6 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 9]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int q_buf_0 ; [L15] int q_free ; [L16] int q_read_ev ; [L17] int q_write_ev ; [L18] int p_num_write ; [L19] int p_last_write ; [L20] int p_dw_st ; [L21] int p_dw_pc ; [L22] int p_dw_i ; [L23] int c_num_read ; [L24] int c_last_read ; [L25] int c_dr_st ; [L26] int c_dr_pc ; [L27] int c_dr_i ; [L134] static int a_t ; [L350] int __retres1 ; [L354] CALL init_model() [L336] q_free = 1 [L337] q_write_ev = 2 [L338] q_read_ev = q_write_ev [L339] p_num_write = 0 [L340] p_dw_pc = 0 [L341] p_dw_i = 1 [L342] c_num_read = 0 [L343] c_dr_pc = 0 [L344] c_dr_i = 1 [L354] RET init_model() [L355] CALL start_simulation() [L304] int kernel_st ; [L305] int tmp ; [L309] kernel_st = 0 [L310] CALL init_threads() [L196] COND TRUE (int )p_dw_i == 1 [L197] p_dw_st = 0 [L201] COND TRUE (int )c_dr_i == 1 [L202] c_dr_st = 0 [L310] RET init_threads() [L313] COND TRUE 1 [L316] kernel_st = 1 [L317] CALL eval() [L231] int tmp ; [L232] int tmp___0 ; [L233] int tmp___1 ; [L237] COND TRUE 1 [L240] CALL, EXPR exists_runnable_thread() [L211] int __retres1 ; [L214] COND TRUE (int )p_dw_st == 0 [L215] __retres1 = 1 [L227] return (__retres1); [L240] RET, EXPR exists_runnable_thread() [L240] tmp___1 = exists_runnable_thread() [L242] COND TRUE \read(tmp___1) [L247] COND TRUE (int )p_dw_st == 0 [L249] tmp = __VERIFIER_nondet_int() [L251] COND FALSE !(\read(tmp)) [L257] CALL error() [L9] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 15 procedures, 183 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=183occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...