./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-atomic/peterson.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 96f16385 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-atomic/peterson.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 997418c6caa3dfe6137e5cc9e02fb9342381aa72 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-96f1638 [2020-12-02 11:43:37,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 11:43:37,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 11:43:37,859 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 11:43:37,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 11:43:37,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 11:43:37,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 11:43:37,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 11:43:37,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 11:43:37,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 11:43:37,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 11:43:37,890 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 11:43:37,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 11:43:37,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 11:43:37,895 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 11:43:37,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 11:43:37,898 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 11:43:37,902 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 11:43:37,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 11:43:37,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 11:43:37,916 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 11:43:37,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 11:43:37,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 11:43:37,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 11:43:37,929 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 11:43:37,930 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 11:43:37,930 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 11:43:37,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 11:43:37,933 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 11:43:37,934 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 11:43:37,934 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 11:43:37,935 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 11:43:37,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 11:43:37,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 11:43:37,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 11:43:37,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 11:43:37,941 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 11:43:37,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 11:43:37,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 11:43:37,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 11:43:37,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 11:43:37,946 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 11:43:38,010 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 11:43:38,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 11:43:38,014 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 11:43:38,014 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 11:43:38,015 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 11:43:38,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 11:43:38,016 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 11:43:38,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 11:43:38,016 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 11:43:38,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 11:43:38,018 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 11:43:38,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 11:43:38,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 11:43:38,019 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 11:43:38,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 11:43:38,020 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 11:43:38,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 11:43:38,021 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 11:43:38,021 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 11:43:38,021 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 11:43:38,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 11:43:38,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 11:43:38,022 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 11:43:38,023 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 11:43:38,023 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 11:43:38,023 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 11:43:38,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 11:43:38,024 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 11:43:38,024 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 11:43:38,024 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 997418c6caa3dfe6137e5cc9e02fb9342381aa72 [2020-12-02 11:43:38,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 11:43:38,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 11:43:38,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 11:43:38,514 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 11:43:38,515 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 11:43:38,516 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-atomic/peterson.i [2020-12-02 11:43:38,597 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/584138e33/f5b0634092ed41c48846a09868318ad9/FLAG218428c79 [2020-12-02 11:43:39,287 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 11:43:39,288 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/peterson.i [2020-12-02 11:43:39,305 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/584138e33/f5b0634092ed41c48846a09868318ad9/FLAG218428c79 [2020-12-02 11:43:39,598 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/584138e33/f5b0634092ed41c48846a09868318ad9 [2020-12-02 11:43:39,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 11:43:39,615 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 11:43:39,623 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 11:43:39,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 11:43:39,628 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 11:43:39,628 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:43:39" (1/1) ... [2020-12-02 11:43:39,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49637679 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:43:39, skipping insertion in model container [2020-12-02 11:43:39,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:43:39" (1/1) ... [2020-12-02 11:43:39,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 11:43:39,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 11:43:39,872 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-12-02 11:43:40,062 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/peterson.i[30997,31010] [2020-12-02 11:43:40,069 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/peterson.i[31682,31695] [2020-12-02 11:43:40,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 11:43:40,082 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 11:43:40,099 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-12-02 11:43:40,141 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/peterson.i[30997,31010] [2020-12-02 11:43:40,148 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/peterson.i[31682,31695] [2020-12-02 11:43:40,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 11:43:40,254 INFO L208 MainTranslator]: Completed translation [2020-12-02 11:43:40,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:43:40 WrapperNode [2020-12-02 11:43:40,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 11:43:40,257 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 11:43:40,257 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 11:43:40,257 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 11:43:40,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:43:40" (1/1) ... [2020-12-02 11:43:40,281 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:43:40" (1/1) ... [2020-12-02 11:43:40,303 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 11:43:40,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 11:43:40,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 11:43:40,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 11:43:40,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:43:40" (1/1) ... [2020-12-02 11:43:40,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:43:40" (1/1) ... [2020-12-02 11:43:40,319 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:43:40" (1/1) ... [2020-12-02 11:43:40,319 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:43:40" (1/1) ... [2020-12-02 11:43:40,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:43:40" (1/1) ... [2020-12-02 11:43:40,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:43:40" (1/1) ... [2020-12-02 11:43:40,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:43:40" (1/1) ... [2020-12-02 11:43:40,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 11:43:40,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 11:43:40,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 11:43:40,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 11:43:40,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:43:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 11:43:40,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-02 11:43:40,434 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-12-02 11:43:40,434 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-12-02 11:43:40,434 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-12-02 11:43:40,435 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-12-02 11:43:40,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 11:43:40,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 11:43:40,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 11:43:40,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 11:43:40,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 11:43:40,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 11:43:40,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 11:43:40,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 11:43:40,438 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-02 11:43:40,871 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 11:43:40,872 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-12-02 11:43:40,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:43:40 BoogieIcfgContainer [2020-12-02 11:43:40,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 11:43:40,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 11:43:40,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 11:43:40,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 11:43:40,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:43:39" (1/3) ... [2020-12-02 11:43:40,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f2c389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:43:40, skipping insertion in model container [2020-12-02 11:43:40,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:43:40" (2/3) ... [2020-12-02 11:43:40,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f2c389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:43:40, skipping insertion in model container [2020-12-02 11:43:40,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:43:40" (3/3) ... [2020-12-02 11:43:40,883 INFO L111 eAbstractionObserver]: Analyzing ICFG peterson.i [2020-12-02 11:43:40,899 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 11:43:40,899 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 11:43:40,903 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-02 11:43:40,904 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 11:43:40,936 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,937 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,937 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,937 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,938 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,938 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,938 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,938 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,939 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,939 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,939 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,940 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,940 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,940 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,940 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,941 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,941 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,941 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,941 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,942 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,942 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,942 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,943 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,943 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,944 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,944 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,944 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,944 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,945 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,945 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,946 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,946 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,948 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,948 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,948 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,948 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,949 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,949 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,949 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,949 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,950 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,950 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,953 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,953 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,953 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,954 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,954 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,954 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,955 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,955 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,956 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,956 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,956 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,956 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,957 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,957 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,959 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,959 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,960 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,960 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,960 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,961 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,966 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,966 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,967 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,967 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,967 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,967 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:43:40,977 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-12-02 11:43:40,990 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-02 11:43:41,014 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 11:43:41,015 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 11:43:41,015 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 11:43:41,015 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 11:43:41,015 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 11:43:41,016 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 11:43:41,016 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 11:43:41,016 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 11:43:41,029 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 11:43:41,032 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 74 transitions, 170 flow [2020-12-02 11:43:41,036 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 74 transitions, 170 flow [2020-12-02 11:43:41,039 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 73 places, 74 transitions, 170 flow [2020-12-02 11:43:41,087 INFO L129 PetriNetUnfolder]: 7/74 cut-off events. [2020-12-02 11:43:41,087 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-12-02 11:43:41,105 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 74 events. 7/74 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 47. Up to 3 conditions per place. [2020-12-02 11:43:41,110 INFO L116 LiptonReduction]: Number of co-enabled transitions 1116 [2020-12-02 11:43:43,512 WARN L197 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2020-12-02 11:43:43,634 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-02 11:43:43,872 WARN L197 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2020-12-02 11:43:43,994 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-02 11:43:44,004 INFO L131 LiptonReduction]: Checked pairs total: 3982 [2020-12-02 11:43:44,004 INFO L133 LiptonReduction]: Total number of compositions: 47 [2020-12-02 11:43:44,011 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 36 transitions, 94 flow [2020-12-02 11:43:44,036 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 285 states. [2020-12-02 11:43:44,038 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states. [2020-12-02 11:43:44,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 11:43:44,045 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 11:43:44,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 11:43:44,047 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 11:43:44,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 11:43:44,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1938310971, now seen corresponding path program 1 times [2020-12-02 11:43:44,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 11:43:44,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042810063] [2020-12-02 11:43:44,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 11:43:44,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 11:43:44,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 11:43:44,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042810063] [2020-12-02 11:43:44,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 11:43:44,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 11:43:44,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005937509] [2020-12-02 11:43:44,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 11:43:44,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 11:43:44,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 11:43:44,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 11:43:44,296 INFO L87 Difference]: Start difference. First operand 285 states. Second operand 3 states. [2020-12-02 11:43:44,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 11:43:44,375 INFO L93 Difference]: Finished difference Result 319 states and 694 transitions. [2020-12-02 11:43:44,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 11:43:44,377 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-02 11:43:44,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 11:43:44,398 INFO L225 Difference]: With dead ends: 319 [2020-12-02 11:43:44,398 INFO L226 Difference]: Without dead ends: 224 [2020-12-02 11:43:44,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 11:43:44,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-12-02 11:43:44,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 210. [2020-12-02 11:43:44,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-12-02 11:43:44,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 481 transitions. [2020-12-02 11:43:44,488 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 481 transitions. Word has length 8 [2020-12-02 11:43:44,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 11:43:44,489 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 481 transitions. [2020-12-02 11:43:44,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 11:43:44,490 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 481 transitions. [2020-12-02 11:43:44,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 11:43:44,491 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 11:43:44,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 11:43:44,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 11:43:44,492 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 11:43:44,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 11:43:44,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1207543750, now seen corresponding path program 1 times [2020-12-02 11:43:44,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 11:43:44,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263594824] [2020-12-02 11:43:44,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 11:43:44,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 11:43:44,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 11:43:44,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263594824] [2020-12-02 11:43:44,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 11:43:44,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 11:43:44,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487739244] [2020-12-02 11:43:44,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 11:43:44,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 11:43:44,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 11:43:44,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 11:43:44,557 INFO L87 Difference]: Start difference. First operand 210 states and 481 transitions. Second operand 3 states. [2020-12-02 11:43:44,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 11:43:44,582 INFO L93 Difference]: Finished difference Result 201 states and 446 transitions. [2020-12-02 11:43:44,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 11:43:44,584 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-02 11:43:44,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 11:43:44,588 INFO L225 Difference]: With dead ends: 201 [2020-12-02 11:43:44,588 INFO L226 Difference]: Without dead ends: 148 [2020-12-02 11:43:44,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 11:43:44,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-12-02 11:43:44,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2020-12-02 11:43:44,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-12-02 11:43:44,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 328 transitions. [2020-12-02 11:43:44,611 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 328 transitions. Word has length 10 [2020-12-02 11:43:44,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 11:43:44,612 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 328 transitions. [2020-12-02 11:43:44,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 11:43:44,612 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 328 transitions. [2020-12-02 11:43:44,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 11:43:44,615 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 11:43:44,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 11:43:44,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 11:43:44,616 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 11:43:44,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 11:43:44,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1030642209, now seen corresponding path program 1 times [2020-12-02 11:43:44,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 11:43:44,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104912908] [2020-12-02 11:43:44,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 11:43:44,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 11:43:44,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 11:43:44,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104912908] [2020-12-02 11:43:44,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 11:43:44,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-02 11:43:44,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270554025] [2020-12-02 11:43:44,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 11:43:44,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 11:43:44,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 11:43:44,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-02 11:43:44,789 INFO L87 Difference]: Start difference. First operand 148 states and 328 transitions. Second operand 6 states. [2020-12-02 11:43:44,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 11:43:44,918 INFO L93 Difference]: Finished difference Result 218 states and 503 transitions. [2020-12-02 11:43:44,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 11:43:44,919 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-02 11:43:44,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 11:43:44,921 INFO L225 Difference]: With dead ends: 218 [2020-12-02 11:43:44,922 INFO L226 Difference]: Without dead ends: 158 [2020-12-02 11:43:44,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-02 11:43:44,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-12-02 11:43:44,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 146. [2020-12-02 11:43:44,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-12-02 11:43:44,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 319 transitions. [2020-12-02 11:43:44,933 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 319 transitions. Word has length 15 [2020-12-02 11:43:44,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 11:43:44,934 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 319 transitions. [2020-12-02 11:43:44,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 11:43:44,934 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 319 transitions. [2020-12-02 11:43:44,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 11:43:44,936 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 11:43:44,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 11:43:44,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 11:43:44,937 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 11:43:44,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 11:43:44,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1089270781, now seen corresponding path program 2 times [2020-12-02 11:43:44,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 11:43:44,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195159520] [2020-12-02 11:43:44,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 11:43:44,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 11:43:45,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 11:43:45,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195159520] [2020-12-02 11:43:45,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 11:43:45,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-02 11:43:45,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770759076] [2020-12-02 11:43:45,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 11:43:45,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 11:43:45,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 11:43:45,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-02 11:43:45,041 INFO L87 Difference]: Start difference. First operand 146 states and 319 transitions. Second operand 6 states. [2020-12-02 11:43:45,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 11:43:45,093 INFO L93 Difference]: Finished difference Result 100 states and 236 transitions. [2020-12-02 11:43:45,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 11:43:45,093 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-02 11:43:45,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 11:43:45,093 INFO L225 Difference]: With dead ends: 100 [2020-12-02 11:43:45,093 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 11:43:45,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-02 11:43:45,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 11:43:45,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 11:43:45,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 11:43:45,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 11:43:45,095 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-12-02 11:43:45,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 11:43:45,095 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 11:43:45,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 11:43:45,095 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 11:43:45,095 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 11:43:45,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 11:43:45,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 11:43:45 BasicIcfg [2020-12-02 11:43:45,099 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 11:43:45,099 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 11:43:45,099 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 11:43:45,100 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 11:43:45,100 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:43:40" (3/4) ... [2020-12-02 11:43:45,103 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 11:43:45,110 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2020-12-02 11:43:45,111 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2020-12-02 11:43:45,114 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-12-02 11:43:45,115 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 11:43:45,115 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 11:43:45,115 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 11:43:45,152 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 11:43:45,152 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 11:43:45,154 INFO L168 Benchmark]: Toolchain (without parser) took 5538.06 ms. Allocated memory was 44.0 MB in the beginning and 125.8 MB in the end (delta: 81.8 MB). Free memory was 28.7 MB in the beginning and 65.0 MB in the end (delta: -36.3 MB). Peak memory consumption was 45.1 MB. Max. memory is 16.1 GB. [2020-12-02 11:43:45,154 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 44.0 MB. Free memory was 26.9 MB in the beginning and 26.9 MB in the end (delta: 28.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 11:43:45,155 INFO L168 Benchmark]: CACSL2BoogieTranslator took 632.69 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 28.5 MB in the beginning and 32.0 MB in the end (delta: -3.5 MB). Peak memory consumption was 16.9 MB. Max. memory is 16.1 GB. [2020-12-02 11:43:45,156 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.68 ms. Allocated memory is still 54.5 MB. Free memory was 32.0 MB in the beginning and 30.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 11:43:45,157 INFO L168 Benchmark]: Boogie Preprocessor took 32.10 ms. Allocated memory is still 54.5 MB. Free memory was 30.1 MB in the beginning and 28.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 11:43:45,157 INFO L168 Benchmark]: RCFGBuilder took 537.61 ms. Allocated memory is still 54.5 MB. Free memory was 28.8 MB in the beginning and 35.2 MB in the end (delta: -6.4 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2020-12-02 11:43:45,158 INFO L168 Benchmark]: TraceAbstraction took 4222.92 ms. Allocated memory was 54.5 MB in the beginning and 125.8 MB in the end (delta: 71.3 MB). Free memory was 34.9 MB in the beginning and 68.2 MB in the end (delta: -33.3 MB). Peak memory consumption was 36.7 MB. Max. memory is 16.1 GB. [2020-12-02 11:43:45,159 INFO L168 Benchmark]: Witness Printer took 52.89 ms. Allocated memory is still 125.8 MB. Free memory was 68.2 MB in the beginning and 65.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-02 11:43:45,165 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 44.0 MB. Free memory was 26.9 MB in the beginning and 26.9 MB in the end (delta: 28.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 632.69 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 28.5 MB in the beginning and 32.0 MB in the end (delta: -3.5 MB). Peak memory consumption was 16.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.68 ms. Allocated memory is still 54.5 MB. Free memory was 32.0 MB in the beginning and 30.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.10 ms. Allocated memory is still 54.5 MB. Free memory was 30.1 MB in the beginning and 28.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 537.61 ms. Allocated memory is still 54.5 MB. Free memory was 28.8 MB in the beginning and 35.2 MB in the end (delta: -6.4 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4222.92 ms. Allocated memory was 54.5 MB in the beginning and 125.8 MB in the end (delta: 71.3 MB). Free memory was 34.9 MB in the beginning and 68.2 MB in the end (delta: -33.3 MB). Peak memory consumption was 36.7 MB. Max. memory is 16.1 GB. * Witness Printer took 52.89 ms. Allocated memory is still 125.8 MB. Free memory was 68.2 MB in the beginning and 65.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 789 VarBasedMoverChecksPositive, 47 VarBasedMoverChecksNegative, 11 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 258 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.9s, 73 PlacesBefore, 38 PlacesAfterwards, 74 TransitionsBefore, 36 TransitionsAfterwards, 1116 CoEnabledTransitionPairs, 5 FixpointIterations, 21 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 3 ChoiceCompositions, 47 TotalNumberOfCompositions, 3982 MoverChecksTotal - PositiveResult [Line: 753]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 725]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 67 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 154 SDtfs, 121 SDslu, 181 SDs, 0 SdLazy, 112 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=285occurred 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: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 26 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1450 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 correct! Received shutdown request...