./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe031_tso.opt.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_902f2003-04da-4472-bd5a-c9dcc65c3dd6/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902f2003-04da-4472-bd5a-c9dcc65c3dd6/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_902f2003-04da-4472-bd5a-c9dcc65c3dd6/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902f2003-04da-4472-bd5a-c9dcc65c3dd6/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe031_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902f2003-04da-4472-bd5a-c9dcc65c3dd6/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_902f2003-04da-4472-bd5a-c9dcc65c3dd6/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 6c6aa79d63d892d225c1a390dc2b1239fe052036 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:27:38,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:27:38,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:27:38,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:27:38,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:27:38,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:27:38,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:27:39,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:27:39,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:27:39,004 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:27:39,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:27:39,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:27:39,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:27:39,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:27:39,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:27:39,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:27:39,015 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:27:39,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:27:39,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:27:39,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:27:39,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:27:39,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:27:39,032 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:27:39,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:27:39,040 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:27:39,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:27:39,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:27:39,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:27:39,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:27:39,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:27:39,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:27:39,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:27:39,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:27:39,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:27:39,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:27:39,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:27:39,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:27:39,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:27:39,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:27:39,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:27:39,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:27:39,055 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902f2003-04da-4472-bd5a-c9dcc65c3dd6/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:27:39,081 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:27:39,081 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:27:39,082 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:27:39,083 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:27:39,083 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:27:39,083 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:27:39,083 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:27:39,084 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:27:39,084 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:27:39,084 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:27:39,084 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:27:39,084 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:27:39,085 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:27:39,085 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:27:39,085 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:27:39,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:27:39,086 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:27:39,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:27:39,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:27:39,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:27:39,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:27:39,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:27:39,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:27:39,088 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:27:39,088 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:27:39,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:27:39,089 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:27:39,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:27:39,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:27:39,089 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:27:39,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:39,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:27:39,090 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:27:39,090 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:27:39,091 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:27:39,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:27:39,091 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:27:39,091 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:27:39,091 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:27:39,092 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_902f2003-04da-4472-bd5a-c9dcc65c3dd6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902f2003-04da-4472-bd5a-c9dcc65c3dd6/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c6aa79d63d892d225c1a390dc2b1239fe052036 [2021-10-11 02:27:39,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:27:39,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:27:39,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:27:39,374 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:27:39,376 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:27:39,378 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902f2003-04da-4472-bd5a-c9dcc65c3dd6/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/pthread-wmm/safe031_tso.opt.i [2021-10-11 02:27:39,467 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902f2003-04da-4472-bd5a-c9dcc65c3dd6/bin/utaipan-WLngWcDbfI/data/dd1bf5901/db7a307f67c34bf0b1abe9156e7e159c/FLAG4e98884af [2021-10-11 02:27:40,100 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:27:40,106 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902f2003-04da-4472-bd5a-c9dcc65c3dd6/sv-benchmarks/c/pthread-wmm/safe031_tso.opt.i [2021-10-11 02:27:40,136 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902f2003-04da-4472-bd5a-c9dcc65c3dd6/bin/utaipan-WLngWcDbfI/data/dd1bf5901/db7a307f67c34bf0b1abe9156e7e159c/FLAG4e98884af [2021-10-11 02:27:40,362 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902f2003-04da-4472-bd5a-c9dcc65c3dd6/bin/utaipan-WLngWcDbfI/data/dd1bf5901/db7a307f67c34bf0b1abe9156e7e159c [2021-10-11 02:27:40,365 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:27:40,366 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:27:40,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:40,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:27:40,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:27:40,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:40" (1/1) ... [2021-10-11 02:27:40,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ac1fba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:40, skipping insertion in model container [2021-10-11 02:27:40,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:40" (1/1) ... [2021-10-11 02:27:40,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:27:40,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:27:40,644 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_902f2003-04da-4472-bd5a-c9dcc65c3dd6/sv-benchmarks/c/pthread-wmm/safe031_tso.opt.i[949,962] [2021-10-11 02:27:40,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:40,877 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:27:40,891 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_902f2003-04da-4472-bd5a-c9dcc65c3dd6/sv-benchmarks/c/pthread-wmm/safe031_tso.opt.i[949,962] [2021-10-11 02:27:40,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:41,020 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:27:41,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:41 WrapperNode [2021-10-11 02:27:41,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:41,022 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:41,022 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:27:41,022 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:27:41,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:41" (1/1) ... [2021-10-11 02:27:41,073 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:41" (1/1) ... [2021-10-11 02:27:41,105 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:41,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:27:41,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:27:41,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:27:41,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:41" (1/1) ... [2021-10-11 02:27:41,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:41" (1/1) ... [2021-10-11 02:27:41,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:41" (1/1) ... [2021-10-11 02:27:41,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:41" (1/1) ... [2021-10-11 02:27:41,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:41" (1/1) ... [2021-10-11 02:27:41,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:41" (1/1) ... [2021-10-11 02:27:41,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:41" (1/1) ... [2021-10-11 02:27:41,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:27:41,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:27:41,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:27:41,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:27:41,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:41" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902f2003-04da-4472-bd5a-c9dcc65c3dd6/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 02:27:41,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:27:41,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-11 02:27:41,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:27:41,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:27:41,271 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-11 02:27:41,271 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-11 02:27:41,271 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-11 02:27:41,271 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-11 02:27:41,272 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-11 02:27:41,272 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-11 02:27:41,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:27:41,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-11 02:27:41,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:27:41,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:27:41,274 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 02:27:41,762 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:27:41,762 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-11 02:27:41,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:41 BoogieIcfgContainer [2021-10-11 02:27:41,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:27:41,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:27:41,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:27:41,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:27:41,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:27:40" (1/3) ... [2021-10-11 02:27:41,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c68b90c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:41, skipping insertion in model container [2021-10-11 02:27:41,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:41" (2/3) ... [2021-10-11 02:27:41,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c68b90c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:41, skipping insertion in model container [2021-10-11 02:27:41,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:41" (3/3) ... [2021-10-11 02:27:41,781 INFO L111 eAbstractionObserver]: Analyzing ICFG safe031_tso.opt.i [2021-10-11 02:27:41,803 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-11 02:27:41,804 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:27:41,809 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:27:41,810 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-11 02:27:41,866 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,867 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,867 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,867 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,868 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,868 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,869 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,869 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,869 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,870 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,870 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,870 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,872 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,872 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,873 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,873 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,874 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,874 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,874 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,874 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,875 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,876 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,876 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,877 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,878 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,878 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,878 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,879 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,881 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,882 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,882 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,883 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,884 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,884 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,884 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,884 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,887 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,888 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,888 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,888 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,894 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,894 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,894 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,895 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,902 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,905 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,905 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,905 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:41,908 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-11 02:27:41,921 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 02:27:41,958 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:27:41,959 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:27:41,959 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:27:41,959 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:27:41,959 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:27:41,959 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:27:41,959 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:27:41,960 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:27:41,977 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-11 02:27:41,980 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 74 transitions, 163 flow [2021-10-11 02:27:41,984 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 74 transitions, 163 flow [2021-10-11 02:27:41,986 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-10-11 02:27:42,055 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-10-11 02:27:42,055 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-11 02:27:42,069 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-10-11 02:27:42,074 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2021-10-11 02:27:45,117 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-10-11 02:27:45,395 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-10-11 02:27:45,507 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-10-11 02:27:45,528 INFO L131 LiptonReduction]: Checked pairs total: 2656 [2021-10-11 02:27:45,528 INFO L133 LiptonReduction]: Total number of compositions: 62 [2021-10-11 02:27:45,534 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2021-10-11 02:27:45,561 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2021-10-11 02:27:45,563 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2021-10-11 02:27:45,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:27:45,569 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:45,570 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:45,571 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:45,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:45,576 INFO L82 PathProgramCache]: Analyzing trace with hash -73223859, now seen corresponding path program 1 times [2021-10-11 02:27:45,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:45,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718202733] [2021-10-11 02:27:45,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:45,739 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 02:27:45,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718202733] [2021-10-11 02:27:45,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:45,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:45,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742493733] [2021-10-11 02:27:45,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:27:45,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:45,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:27:45,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:27:45,761 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2021-10-11 02:27:45,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:45,792 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2021-10-11 02:27:45,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:27:45,793 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-10-11 02:27:45,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:45,809 INFO L225 Difference]: With dead ends: 362 [2021-10-11 02:27:45,809 INFO L226 Difference]: Without dead ends: 298 [2021-10-11 02:27:45,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:27:45,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-10-11 02:27:45,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-10-11 02:27:45,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2021-10-11 02:27:45,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2021-10-11 02:27:45,878 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2021-10-11 02:27:45,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:45,880 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2021-10-11 02:27:45,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:27:45,880 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2021-10-11 02:27:45,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:27:45,882 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:45,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:45,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:27:45,882 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:45,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:45,884 INFO L82 PathProgramCache]: Analyzing trace with hash 2025018626, now seen corresponding path program 1 times [2021-10-11 02:27:45,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:45,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322300680] [2021-10-11 02:27:45,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:46,125 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 02:27:46,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322300680] [2021-10-11 02:27:46,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:46,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:46,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327799293] [2021-10-11 02:27:46,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:46,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:46,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:46,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:46,129 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2021-10-11 02:27:46,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:46,202 INFO L93 Difference]: Finished difference Result 556 states and 1507 transitions. [2021-10-11 02:27:46,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:27:46,203 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-10-11 02:27:46,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:46,210 INFO L225 Difference]: With dead ends: 556 [2021-10-11 02:27:46,210 INFO L226 Difference]: Without dead ends: 414 [2021-10-11 02:27:46,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:27:46,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2021-10-11 02:27:46,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 338. [2021-10-11 02:27:46,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2021-10-11 02:27:46,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 924 transitions. [2021-10-11 02:27:46,265 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 924 transitions. Word has length 9 [2021-10-11 02:27:46,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:46,265 INFO L481 AbstractCegarLoop]: Abstraction has 338 states and 924 transitions. [2021-10-11 02:27:46,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:46,266 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 924 transitions. [2021-10-11 02:27:46,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:27:46,270 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:46,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:46,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:27:46,270 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:46,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:46,281 INFO L82 PathProgramCache]: Analyzing trace with hash 642582749, now seen corresponding path program 1 times [2021-10-11 02:27:46,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:46,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115627047] [2021-10-11 02:27:46,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:46,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:46,407 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 02:27:46,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115627047] [2021-10-11 02:27:46,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:46,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:27:46,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160064592] [2021-10-11 02:27:46,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:27:46,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:46,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:27:46,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:27:46,412 INFO L87 Difference]: Start difference. First operand 338 states and 924 transitions. Second operand 5 states. [2021-10-11 02:27:46,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:46,497 INFO L93 Difference]: Finished difference Result 464 states and 1199 transitions. [2021-10-11 02:27:46,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:27:46,498 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-10-11 02:27:46,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:46,502 INFO L225 Difference]: With dead ends: 464 [2021-10-11 02:27:46,502 INFO L226 Difference]: Without dead ends: 390 [2021-10-11 02:27:46,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:27:46,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-10-11 02:27:46,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 326. [2021-10-11 02:27:46,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2021-10-11 02:27:46,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 880 transitions. [2021-10-11 02:27:46,522 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 880 transitions. Word has length 10 [2021-10-11 02:27:46,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:46,523 INFO L481 AbstractCegarLoop]: Abstraction has 326 states and 880 transitions. [2021-10-11 02:27:46,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:27:46,523 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 880 transitions. [2021-10-11 02:27:46,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:27:46,529 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:46,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:46,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:27:46,530 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:46,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:46,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1648891103, now seen corresponding path program 1 times [2021-10-11 02:27:46,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:46,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732241337] [2021-10-11 02:27:46,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:46,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:46,640 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 02:27:46,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732241337] [2021-10-11 02:27:46,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:46,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:27:46,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058295062] [2021-10-11 02:27:46,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:27:46,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:46,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:27:46,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:27:46,643 INFO L87 Difference]: Start difference. First operand 326 states and 880 transitions. Second operand 5 states. [2021-10-11 02:27:46,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:46,700 INFO L93 Difference]: Finished difference Result 440 states and 1121 transitions. [2021-10-11 02:27:46,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:27:46,701 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-10-11 02:27:46,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:46,704 INFO L225 Difference]: With dead ends: 440 [2021-10-11 02:27:46,704 INFO L226 Difference]: Without dead ends: 362 [2021-10-11 02:27:46,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:27:46,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-10-11 02:27:46,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 298. [2021-10-11 02:27:46,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2021-10-11 02:27:46,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 794 transitions. [2021-10-11 02:27:46,718 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 794 transitions. Word has length 10 [2021-10-11 02:27:46,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:46,723 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 794 transitions. [2021-10-11 02:27:46,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:27:46,724 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 794 transitions. [2021-10-11 02:27:46,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:27:46,725 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:46,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:46,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:27:46,726 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:46,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:46,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1554730330, now seen corresponding path program 1 times [2021-10-11 02:27:46,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:46,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999493371] [2021-10-11 02:27:46,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:46,808 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 02:27:46,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999493371] [2021-10-11 02:27:46,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:46,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:46,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402704672] [2021-10-11 02:27:46,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:46,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:46,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:46,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:46,811 INFO L87 Difference]: Start difference. First operand 298 states and 794 transitions. Second operand 3 states. [2021-10-11 02:27:46,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:46,820 INFO L93 Difference]: Finished difference Result 237 states and 555 transitions. [2021-10-11 02:27:46,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:46,821 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2021-10-11 02:27:46,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:46,823 INFO L225 Difference]: With dead ends: 237 [2021-10-11 02:27:46,823 INFO L226 Difference]: Without dead ends: 237 [2021-10-11 02:27:46,824 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 02:27:46,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-10-11 02:27:46,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2021-10-11 02:27:46,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2021-10-11 02:27:46,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 555 transitions. [2021-10-11 02:27:46,835 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 555 transitions. Word has length 11 [2021-10-11 02:27:46,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:46,836 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 555 transitions. [2021-10-11 02:27:46,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:46,836 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 555 transitions. [2021-10-11 02:27:46,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:27:46,837 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:46,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:46,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:27:46,837 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:46,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:46,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1718582767, now seen corresponding path program 1 times [2021-10-11 02:27:46,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:46,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348840884] [2021-10-11 02:27:46,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:46,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:46,904 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 02:27:46,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348840884] [2021-10-11 02:27:46,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:46,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:27:46,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241847287] [2021-10-11 02:27:46,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:46,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:46,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:46,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:46,907 INFO L87 Difference]: Start difference. First operand 237 states and 555 transitions. Second operand 4 states. [2021-10-11 02:27:46,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:46,929 INFO L93 Difference]: Finished difference Result 164 states and 343 transitions. [2021-10-11 02:27:46,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:46,929 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2021-10-11 02:27:46,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:46,931 INFO L225 Difference]: With dead ends: 164 [2021-10-11 02:27:46,931 INFO L226 Difference]: Without dead ends: 160 [2021-10-11 02:27:46,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:46,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-11 02:27:46,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 148. [2021-10-11 02:27:46,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2021-10-11 02:27:46,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 303 transitions. [2021-10-11 02:27:46,936 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 303 transitions. Word has length 13 [2021-10-11 02:27:46,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:46,937 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 303 transitions. [2021-10-11 02:27:46,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:46,937 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 303 transitions. [2021-10-11 02:27:46,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:27:46,938 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:46,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:46,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:27:46,938 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:46,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:46,939 INFO L82 PathProgramCache]: Analyzing trace with hash 669066047, now seen corresponding path program 1 times [2021-10-11 02:27:46,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:46,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587153136] [2021-10-11 02:27:46,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:47,024 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 02:27:47,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587153136] [2021-10-11 02:27:47,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:47,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:27:47,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698127456] [2021-10-11 02:27:47,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:27:47,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:47,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:27:47,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:27:47,028 INFO L87 Difference]: Start difference. First operand 148 states and 303 transitions. Second operand 5 states. [2021-10-11 02:27:47,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:47,092 INFO L93 Difference]: Finished difference Result 184 states and 367 transitions. [2021-10-11 02:27:47,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:27:47,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-10-11 02:27:47,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:47,093 INFO L225 Difference]: With dead ends: 184 [2021-10-11 02:27:47,094 INFO L226 Difference]: Without dead ends: 140 [2021-10-11 02:27:47,095 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 02:27:47,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-11 02:27:47,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 111. [2021-10-11 02:27:47,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2021-10-11 02:27:47,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 212 transitions. [2021-10-11 02:27:47,117 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 212 transitions. Word has length 15 [2021-10-11 02:27:47,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:47,120 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 212 transitions. [2021-10-11 02:27:47,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:27:47,120 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 212 transitions. [2021-10-11 02:27:47,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:27:47,122 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:47,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:47,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:27:47,123 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:47,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:47,123 INFO L82 PathProgramCache]: Analyzing trace with hash 660741003, now seen corresponding path program 1 times [2021-10-11 02:27:47,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:47,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129152952] [2021-10-11 02:27:47,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:47,210 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 02:27:47,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129152952] [2021-10-11 02:27:47,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:47,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:27:47,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504161831] [2021-10-11 02:27:47,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:27:47,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:47,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:27:47,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:27:47,213 INFO L87 Difference]: Start difference. First operand 111 states and 212 transitions. Second operand 5 states. [2021-10-11 02:27:47,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:47,246 INFO L93 Difference]: Finished difference Result 152 states and 279 transitions. [2021-10-11 02:27:47,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:27:47,246 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-10-11 02:27:47,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:47,247 INFO L225 Difference]: With dead ends: 152 [2021-10-11 02:27:47,248 INFO L226 Difference]: Without dead ends: 135 [2021-10-11 02:27:47,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:27:47,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-10-11 02:27:47,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 110. [2021-10-11 02:27:47,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2021-10-11 02:27:47,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 209 transitions. [2021-10-11 02:27:47,253 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 209 transitions. Word has length 15 [2021-10-11 02:27:47,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:47,253 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 209 transitions. [2021-10-11 02:27:47,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:27:47,254 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 209 transitions. [2021-10-11 02:27:47,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:27:47,254 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:47,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:47,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:27:47,255 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:47,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:47,255 INFO L82 PathProgramCache]: Analyzing trace with hash 2129101485, now seen corresponding path program 2 times [2021-10-11 02:27:47,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:47,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783313523] [2021-10-11 02:27:47,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:47,347 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 02:27:47,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783313523] [2021-10-11 02:27:47,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:47,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:27:47,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486709965] [2021-10-11 02:27:47,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:27:47,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:47,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:27:47,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:27:47,349 INFO L87 Difference]: Start difference. First operand 110 states and 209 transitions. Second operand 5 states. [2021-10-11 02:27:47,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:47,368 INFO L93 Difference]: Finished difference Result 88 states and 174 transitions. [2021-10-11 02:27:47,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:27:47,369 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-10-11 02:27:47,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:47,369 INFO L225 Difference]: With dead ends: 88 [2021-10-11 02:27:47,369 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:27:47,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:27:47,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:27:47,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:27:47,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:27:47,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:27:47,371 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-10-11 02:27:47,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:47,371 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:27:47,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:27:47,371 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:27:47,372 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:27:47,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:27:47,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:27:47 BasicIcfg [2021-10-11 02:27:47,375 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:27:47,375 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:27:47,376 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:27:47,376 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:27:47,376 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:41" (3/4) ... [2021-10-11 02:27:47,379 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:27:47,385 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-11 02:27:47,385 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-11 02:27:47,386 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-11 02:27:47,391 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-11 02:27:47,392 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:27:47,392 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:27:47,392 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:27:47,441 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902f2003-04da-4472-bd5a-c9dcc65c3dd6/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:27:47,441 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:27:47,450 INFO L168 Benchmark]: Toolchain (without parser) took 7078.59 ms. Allocated memory was 104.9 MB in the beginning and 151.0 MB in the end (delta: 46.1 MB). Free memory was 71.1 MB in the beginning and 92.5 MB in the end (delta: -21.4 MB). Peak memory consumption was 24.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:47,451 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 79.7 MB. Free memory was 40.6 MB in the beginning and 40.6 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:47,452 INFO L168 Benchmark]: CACSL2BoogieTranslator took 644.03 ms. Allocated memory is still 104.9 MB. Free memory was 70.8 MB in the beginning and 60.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:47,452 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.50 ms. Allocated memory is still 104.9 MB. Free memory was 60.5 MB in the beginning and 58.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:47,453 INFO L168 Benchmark]: Boogie Preprocessor took 57.02 ms. Allocated memory is still 104.9 MB. Free memory was 58.9 MB in the beginning and 57.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:47,453 INFO L168 Benchmark]: RCFGBuilder took 604.39 ms. Allocated memory is still 104.9 MB. Free memory was 57.2 MB in the beginning and 70.9 MB in the end (delta: -13.7 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:47,453 INFO L168 Benchmark]: TraceAbstraction took 5603.51 ms. Allocated memory was 104.9 MB in the beginning and 151.0 MB in the end (delta: 46.1 MB). Free memory was 70.9 MB in the beginning and 94.6 MB in the end (delta: -23.7 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:47,454 INFO L168 Benchmark]: Witness Printer took 68.85 ms. Allocated memory is still 151.0 MB. Free memory was 94.6 MB in the beginning and 92.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:47,456 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 79.7 MB. Free memory was 40.6 MB in the beginning and 40.6 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 644.03 ms. Allocated memory is still 104.9 MB. Free memory was 70.8 MB in the beginning and 60.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 83.50 ms. Allocated memory is still 104.9 MB. Free memory was 60.5 MB in the beginning and 58.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.02 ms. Allocated memory is still 104.9 MB. Free memory was 58.9 MB in the beginning and 57.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 604.39 ms. Allocated memory is still 104.9 MB. Free memory was 57.2 MB in the beginning and 70.9 MB in the end (delta: -13.7 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5603.51 ms. Allocated memory was 104.9 MB in the beginning and 151.0 MB in the end (delta: 46.1 MB). Free memory was 70.9 MB in the beginning and 94.6 MB in the end (delta: -23.7 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. * Witness Printer took 68.85 ms. Allocated memory is still 151.0 MB. Free memory was 94.6 MB in the beginning and 92.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 730 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 25 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 45 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.5s, 82 PlacesBefore, 32 PlacesAfterwards, 74 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 62 TotalNumberOfCompositions, 2656 MoverChecksTotal - PositiveResult [Line: 18]: 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 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.4s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 218 SDtfs, 192 SDslu, 300 SDs, 0 SdLazy, 115 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 9 MinimizatonAttempts, 270 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 4879 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...