./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 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc92c6e3-b348-48ea-b1ac-3f384738ba0f/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc92c6e3-b348-48ea-b1ac-3f384738ba0f/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc92c6e3-b348-48ea-b1ac-3f384738ba0f/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc92c6e3-b348-48ea-b1ac-3f384738ba0f/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-atomic/peterson.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc92c6e3-b348-48ea-b1ac-3f384738ba0f/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc92c6e3-b348-48ea-b1ac-3f384738ba0f/bin/utaipan-WLngWcDbfI --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 Taipan --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 0.2.0-7b2dab5 [2021-10-11 02:21:13,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:21:13,798 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:21:13,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:21:13,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:21:13,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:21:13,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:21:13,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:21:13,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:21:13,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:21:13,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:21:13,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:21:13,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:21:13,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:21:13,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:21:13,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:21:13,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:21:13,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:21:13,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:21:13,904 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:21:13,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:21:13,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:21:13,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:21:13,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:21:13,918 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:21:13,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:21:13,919 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:21:13,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:21:13,923 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:21:13,924 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:21:13,925 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:21:13,926 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:21:13,929 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:21:13,930 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:21:13,932 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:21:13,932 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:21:13,933 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:21:13,934 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:21:13,934 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:21:13,935 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:21:13,936 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:21:13,939 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc92c6e3-b348-48ea-b1ac-3f384738ba0f/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:21:13,995 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:21:13,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:21:13,997 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:21:13,997 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:21:13,998 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:21:13,998 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:21:13,998 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:21:13,999 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:21:13,999 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:21:13,999 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:21:14,000 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:21:14,001 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:21:14,001 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:21:14,002 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:21:14,002 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:21:14,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:21:14,003 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:21:14,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:21:14,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:21:14,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:21:14,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:21:14,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:21:14,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:21:14,005 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:21:14,006 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:21:14,006 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:21:14,006 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:21:14,007 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:21:14,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:21:14,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:21:14,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:21:14,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:21:14,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:21:14,010 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:21:14,011 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:21:14,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:21:14,011 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:21:14,012 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:21:14,012 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:21:14,012 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc92c6e3-b348-48ea-b1ac-3f384738ba0f/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc92c6e3-b348-48ea-b1ac-3f384738ba0f/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 997418c6caa3dfe6137e5cc9e02fb9342381aa72 [2021-10-11 02:21:14,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:21:14,415 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:21:14,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:21:14,421 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:21:14,422 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:21:14,423 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc92c6e3-b348-48ea-b1ac-3f384738ba0f/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/pthread-atomic/peterson.i [2021-10-11 02:21:14,504 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc92c6e3-b348-48ea-b1ac-3f384738ba0f/bin/utaipan-WLngWcDbfI/data/937c433db/a4f4655edab24a1594e4a5f2ab484379/FLAG15a991a75 [2021-10-11 02:21:15,075 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:21:15,080 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc92c6e3-b348-48ea-b1ac-3f384738ba0f/sv-benchmarks/c/pthread-atomic/peterson.i [2021-10-11 02:21:15,106 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc92c6e3-b348-48ea-b1ac-3f384738ba0f/bin/utaipan-WLngWcDbfI/data/937c433db/a4f4655edab24a1594e4a5f2ab484379/FLAG15a991a75 [2021-10-11 02:21:15,345 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc92c6e3-b348-48ea-b1ac-3f384738ba0f/bin/utaipan-WLngWcDbfI/data/937c433db/a4f4655edab24a1594e4a5f2ab484379 [2021-10-11 02:21:15,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:21:15,350 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:21:15,352 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:15,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:21:15,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:21:15,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:15" (1/1) ... [2021-10-11 02:21:15,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63c53d85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:15, skipping insertion in model container [2021-10-11 02:21:15,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:15" (1/1) ... [2021-10-11 02:21:15,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:21:15,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:21:15,674 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-10-11 02:21:15,870 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc92c6e3-b348-48ea-b1ac-3f384738ba0f/sv-benchmarks/c/pthread-atomic/peterson.i[30997,31010] [2021-10-11 02:21:15,885 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc92c6e3-b348-48ea-b1ac-3f384738ba0f/sv-benchmarks/c/pthread-atomic/peterson.i[31682,31695] [2021-10-11 02:21:15,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:15,902 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:21:15,934 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-10-11 02:21:15,963 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc92c6e3-b348-48ea-b1ac-3f384738ba0f/sv-benchmarks/c/pthread-atomic/peterson.i[30997,31010] [2021-10-11 02:21:15,978 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc92c6e3-b348-48ea-b1ac-3f384738ba0f/sv-benchmarks/c/pthread-atomic/peterson.i[31682,31695] [2021-10-11 02:21:15,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:16,058 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:21:16,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:16 WrapperNode [2021-10-11 02:21:16,059 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:16,060 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:16,060 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:21:16,060 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:21:16,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:16" (1/1) ... [2021-10-11 02:21:16,085 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:16" (1/1) ... [2021-10-11 02:21:16,106 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:16,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:21:16,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:21:16,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:21:16,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:16" (1/1) ... [2021-10-11 02:21:16,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:16" (1/1) ... [2021-10-11 02:21:16,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:16" (1/1) ... [2021-10-11 02:21:16,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:16" (1/1) ... [2021-10-11 02:21:16,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:16" (1/1) ... [2021-10-11 02:21:16,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:16" (1/1) ... [2021-10-11 02:21:16,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:16" (1/1) ... [2021-10-11 02:21:16,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:21:16,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:21:16,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:21:16,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:21:16,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:16" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc92c6e3-b348-48ea-b1ac-3f384738ba0f/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:21:16,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:21:16,256 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-10-11 02:21:16,257 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-10-11 02:21:16,257 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-10-11 02:21:16,257 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-10-11 02:21:16,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:21:16,258 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-11 02:21:16,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:21:16,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:21:16,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:21:16,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-11 02:21:16,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:21:16,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:21:16,261 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-11 02:21:16,784 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:21:16,785 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-11 02:21:16,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:16 BoogieIcfgContainer [2021-10-11 02:21:16,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:21:16,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:21:16,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:21:16,795 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:21:16,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:21:15" (1/3) ... [2021-10-11 02:21:16,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@84678af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:16, skipping insertion in model container [2021-10-11 02:21:16,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:16" (2/3) ... [2021-10-11 02:21:16,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@84678af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:16, skipping insertion in model container [2021-10-11 02:21:16,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:16" (3/3) ... [2021-10-11 02:21:16,799 INFO L111 eAbstractionObserver]: Analyzing ICFG peterson.i [2021-10-11 02:21:16,815 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-11 02:21:16,815 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:21:16,819 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-10-11 02:21:16,820 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-11 02:21:16,875 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,876 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,876 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,876 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,877 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,877 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,877 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,877 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,878 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,878 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,879 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,879 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,879 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,880 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,880 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,880 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,881 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,881 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,881 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,882 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,882 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,882 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,883 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,883 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,884 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,884 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,885 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,885 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,886 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,886 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,886 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,887 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,887 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,887 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,888 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,888 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,889 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,889 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,889 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,890 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,890 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,890 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,891 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,891 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,891 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,891 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,892 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,892 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,892 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,893 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,893 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,894 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,894 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,894 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,895 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,895 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,897 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,898 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,898 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,898 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,899 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,899 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,904 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,905 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,905 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,905 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,905 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,906 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:21:16,914 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-11 02:21:16,927 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-11 02:21:16,951 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:21:16,951 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:21:16,952 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:21:16,952 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:21:16,952 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:21:16,952 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:21:16,952 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:21:16,953 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:21:16,966 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-11 02:21:16,969 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 74 transitions, 170 flow [2021-10-11 02:21:16,972 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 74 transitions, 170 flow [2021-10-11 02:21:16,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 73 places, 74 transitions, 170 flow [2021-10-11 02:21:17,020 INFO L129 PetriNetUnfolder]: 7/74 cut-off events. [2021-10-11 02:21:17,021 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-11 02:21:17,026 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. [2021-10-11 02:21:17,029 INFO L116 LiptonReduction]: Number of co-enabled transitions 1116 [2021-10-11 02:21:19,596 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-10-11 02:21:19,713 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-10-11 02:21:20,105 WARN L197 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2021-10-11 02:21:20,257 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-10-11 02:21:20,477 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2021-10-11 02:21:20,604 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-10-11 02:21:20,614 INFO L131 LiptonReduction]: Checked pairs total: 3982 [2021-10-11 02:21:20,614 INFO L133 LiptonReduction]: Total number of compositions: 47 [2021-10-11 02:21:20,621 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 36 transitions, 94 flow [2021-10-11 02:21:20,650 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 285 states. [2021-10-11 02:21:20,653 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states. [2021-10-11 02:21:20,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:21:20,660 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:20,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:20,661 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:20,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:20,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1938310971, now seen corresponding path program 1 times [2021-10-11 02:21:20,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:20,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067258349] [2021-10-11 02:21:20,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:20,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:20,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067258349] [2021-10-11 02:21:20,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:20,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:20,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580103891] [2021-10-11 02:21:20,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:20,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:20,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:20,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:20,940 INFO L87 Difference]: Start difference. First operand 285 states. Second operand 3 states. [2021-10-11 02:21:21,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:21,018 INFO L93 Difference]: Finished difference Result 319 states and 694 transitions. [2021-10-11 02:21:21,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:21,020 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2021-10-11 02:21:21,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:21,037 INFO L225 Difference]: With dead ends: 319 [2021-10-11 02:21:21,037 INFO L226 Difference]: Without dead ends: 224 [2021-10-11 02:21:21,039 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 [2021-10-11 02:21:21,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-10-11 02:21:21,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 210. [2021-10-11 02:21:21,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2021-10-11 02:21:21,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 481 transitions. [2021-10-11 02:21:21,108 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 481 transitions. Word has length 8 [2021-10-11 02:21:21,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:21,109 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 481 transitions. [2021-10-11 02:21:21,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:21,110 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 481 transitions. [2021-10-11 02:21:21,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:21:21,111 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:21,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:21,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:21:21,112 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:21,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:21,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1207543750, now seen corresponding path program 1 times [2021-10-11 02:21:21,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:21,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629685823] [2021-10-11 02:21:21,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:21,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:21,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:21,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629685823] [2021-10-11 02:21:21,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:21,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:21,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607559198] [2021-10-11 02:21:21,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:21,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:21,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:21,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:21,232 INFO L87 Difference]: Start difference. First operand 210 states and 481 transitions. Second operand 3 states. [2021-10-11 02:21:21,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:21,262 INFO L93 Difference]: Finished difference Result 201 states and 446 transitions. [2021-10-11 02:21:21,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:21,266 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2021-10-11 02:21:21,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:21,268 INFO L225 Difference]: With dead ends: 201 [2021-10-11 02:21:21,268 INFO L226 Difference]: Without dead ends: 148 [2021-10-11 02:21:21,269 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 [2021-10-11 02:21:21,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-10-11 02:21:21,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-10-11 02:21:21,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2021-10-11 02:21:21,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 328 transitions. [2021-10-11 02:21:21,293 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 328 transitions. Word has length 10 [2021-10-11 02:21:21,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:21,293 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 328 transitions. [2021-10-11 02:21:21,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:21,293 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 328 transitions. [2021-10-11 02:21:21,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:21:21,296 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:21,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:21,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:21:21,302 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:21,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:21,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1030642209, now seen corresponding path program 1 times [2021-10-11 02:21:21,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:21,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492178221] [2021-10-11 02:21:21,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:21,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:21,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492178221] [2021-10-11 02:21:21,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:21,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:21:21,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908395234] [2021-10-11 02:21:21,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:21:21,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:21,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:21:21,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:21:21,451 INFO L87 Difference]: Start difference. First operand 148 states and 328 transitions. Second operand 6 states. [2021-10-11 02:21:21,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:21,605 INFO L93 Difference]: Finished difference Result 218 states and 503 transitions. [2021-10-11 02:21:21,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:21:21,606 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2021-10-11 02:21:21,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:21,609 INFO L225 Difference]: With dead ends: 218 [2021-10-11 02:21:21,609 INFO L226 Difference]: Without dead ends: 158 [2021-10-11 02:21:21,610 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 [2021-10-11 02:21:21,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-11 02:21:21,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 146. [2021-10-11 02:21:21,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2021-10-11 02:21:21,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 319 transitions. [2021-10-11 02:21:21,625 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 319 transitions. Word has length 15 [2021-10-11 02:21:21,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:21,626 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 319 transitions. [2021-10-11 02:21:21,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:21:21,626 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 319 transitions. [2021-10-11 02:21:21,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:21:21,628 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:21,629 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:21,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:21:21,629 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:21,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:21,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1089270781, now seen corresponding path program 2 times [2021-10-11 02:21:21,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:21,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015220114] [2021-10-11 02:21:21,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:21,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:21,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:21,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015220114] [2021-10-11 02:21:21,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:21,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:21:21,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767534836] [2021-10-11 02:21:21,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:21:21,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:21,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:21:21,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:21:21,704 INFO L87 Difference]: Start difference. First operand 146 states and 319 transitions. Second operand 6 states. [2021-10-11 02:21:21,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:21,783 INFO L93 Difference]: Finished difference Result 100 states and 236 transitions. [2021-10-11 02:21:21,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:21:21,784 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2021-10-11 02:21:21,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:21,784 INFO L225 Difference]: With dead ends: 100 [2021-10-11 02:21:21,784 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:21:21,785 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 [2021-10-11 02:21:21,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:21:21,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:21:21,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:21:21,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:21:21,786 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-10-11 02:21:21,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:21,786 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:21:21,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:21:21,787 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:21:21,787 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:21:21,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:21:21,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:21:21 BasicIcfg [2021-10-11 02:21:21,791 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:21:21,792 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:21:21,792 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:21:21,792 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:21:21,793 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:16" (3/4) ... [2021-10-11 02:21:21,796 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:21:21,803 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2021-10-11 02:21:21,804 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2021-10-11 02:21:21,808 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-11 02:21:21,809 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:21:21,809 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:21:21,809 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:21:21,849 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc92c6e3-b348-48ea-b1ac-3f384738ba0f/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:21:21,849 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:21:21,851 INFO L168 Benchmark]: Toolchain (without parser) took 6499.61 ms. Allocated memory was 117.4 MB in the beginning and 195.0 MB in the end (delta: 77.6 MB). Free memory was 81.4 MB in the beginning and 164.4 MB in the end (delta: -83.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:21,851 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 117.4 MB. Free memory was 88.4 MB in the beginning and 88.4 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:21,852 INFO L168 Benchmark]: CACSL2BoogieTranslator took 706.69 ms. Allocated memory is still 117.4 MB. Free memory was 81.1 MB in the beginning and 73.2 MB in the end (delta: 8.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:21,853 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.86 ms. Allocated memory is still 117.4 MB. Free memory was 73.2 MB in the beginning and 71.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:21,854 INFO L168 Benchmark]: Boogie Preprocessor took 33.56 ms. Allocated memory is still 117.4 MB. Free memory was 71.2 MB in the beginning and 69.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:21,855 INFO L168 Benchmark]: RCFGBuilder took 646.09 ms. Allocated memory is still 117.4 MB. Free memory was 69.7 MB in the beginning and 86.9 MB in the end (delta: -17.1 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:21,855 INFO L168 Benchmark]: TraceAbstraction took 5001.57 ms. Allocated memory was 117.4 MB in the beginning and 195.0 MB in the end (delta: 77.6 MB). Free memory was 86.5 MB in the beginning and 167.6 MB in the end (delta: -81.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:21,856 INFO L168 Benchmark]: Witness Printer took 57.60 ms. Allocated memory is still 195.0 MB. Free memory was 167.6 MB in the beginning and 164.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:21,860 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 117.4 MB. Free memory was 88.4 MB in the beginning and 88.4 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 706.69 ms. Allocated memory is still 117.4 MB. Free memory was 81.1 MB in the beginning and 73.2 MB in the end (delta: 8.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.86 ms. Allocated memory is still 117.4 MB. Free memory was 73.2 MB in the beginning and 71.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.56 ms. Allocated memory is still 117.4 MB. Free memory was 71.2 MB in the beginning and 69.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 646.09 ms. Allocated memory is still 117.4 MB. Free memory was 69.7 MB in the beginning and 86.9 MB in the end (delta: -17.1 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5001.57 ms. Allocated memory was 117.4 MB in the beginning and 195.0 MB in the end (delta: 77.6 MB). Free memory was 86.5 MB in the beginning and 167.6 MB in the end (delta: -81.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 57.60 ms. Allocated memory is still 195.0 MB. Free memory was 167.6 MB in the beginning and 164.4 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: 3.6s, 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: 4.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, 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, 0.0s 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: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 26 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s 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...