./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe036_rmo.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_72851850-f6b8-4718-aea2-25910d5f89cd/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72851850-f6b8-4718-aea2-25910d5f89cd/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_72851850-f6b8-4718-aea2-25910d5f89cd/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72851850-f6b8-4718-aea2-25910d5f89cd/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe036_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72851850-f6b8-4718-aea2-25910d5f89cd/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_72851850-f6b8-4718-aea2-25910d5f89cd/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 19d88bbe5cf428d8ec0606b7afb7f02539c8b12e .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 02:23:17,096 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:23:17,100 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:23:17,166 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:23:17,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:23:17,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:23:17,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:23:17,174 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:23:17,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:23:17,179 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:23:17,180 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:23:17,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:23:17,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:23:17,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:23:17,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:23:17,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:23:17,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:23:17,191 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:23:17,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:23:17,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:23:17,217 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:23:17,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:23:17,221 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:23:17,222 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:23:17,227 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:23:17,227 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:23:17,228 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:23:17,229 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:23:17,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:23:17,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:23:17,232 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:23:17,234 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:23:17,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:23:17,236 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:23:17,237 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:23:17,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:23:17,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:23:17,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:23:17,240 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:23:17,241 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:23:17,242 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:23:17,243 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72851850-f6b8-4718-aea2-25910d5f89cd/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:23:17,269 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:23:17,270 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:23:17,271 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:23:17,271 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:23:17,272 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:23:17,272 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:23:17,272 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:23:17,273 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:23:17,273 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:23:17,273 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:23:17,274 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:23:17,274 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:23:17,274 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:23:17,275 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:23:17,275 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:23:17,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:23:17,276 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:23:17,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:23:17,277 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:23:17,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:23:17,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:23:17,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:23:17,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:23:17,279 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:23:17,279 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:23:17,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:23:17,280 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:23:17,280 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:23:17,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:23:17,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:23:17,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:23:17,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:23:17,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:23:17,282 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:23:17,283 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:23:17,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:23:17,283 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:23:17,284 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:23:17,284 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:23:17,284 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_72851850-f6b8-4718-aea2-25910d5f89cd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72851850-f6b8-4718-aea2-25910d5f89cd/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19d88bbe5cf428d8ec0606b7afb7f02539c8b12e [2021-10-11 02:23:17,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:23:17,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:23:17,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:23:17,618 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:23:17,622 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:23:17,624 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72851850-f6b8-4718-aea2-25910d5f89cd/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/pthread-wmm/safe036_rmo.opt.i [2021-10-11 02:23:17,699 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72851850-f6b8-4718-aea2-25910d5f89cd/bin/utaipan-WLngWcDbfI/data/b81cddff5/6aaa9f20760c4d9c8f7070721ffd82c1/FLAG2af78c66e [2021-10-11 02:23:18,415 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:23:18,415 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72851850-f6b8-4718-aea2-25910d5f89cd/sv-benchmarks/c/pthread-wmm/safe036_rmo.opt.i [2021-10-11 02:23:18,453 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72851850-f6b8-4718-aea2-25910d5f89cd/bin/utaipan-WLngWcDbfI/data/b81cddff5/6aaa9f20760c4d9c8f7070721ffd82c1/FLAG2af78c66e [2021-10-11 02:23:18,602 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72851850-f6b8-4718-aea2-25910d5f89cd/bin/utaipan-WLngWcDbfI/data/b81cddff5/6aaa9f20760c4d9c8f7070721ffd82c1 [2021-10-11 02:23:18,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:23:18,609 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:23:18,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:18,613 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:23:18,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:23:18,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:18" (1/1) ... [2021-10-11 02:23:18,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@631f82a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:18, skipping insertion in model container [2021-10-11 02:23:18,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:18" (1/1) ... [2021-10-11 02:23:18,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:23:18,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:23:18,961 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_72851850-f6b8-4718-aea2-25910d5f89cd/sv-benchmarks/c/pthread-wmm/safe036_rmo.opt.i[949,962] [2021-10-11 02:23:19,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:19,181 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:23:19,195 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_72851850-f6b8-4718-aea2-25910d5f89cd/sv-benchmarks/c/pthread-wmm/safe036_rmo.opt.i[949,962] [2021-10-11 02:23:19,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:19,327 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:23:19,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:19 WrapperNode [2021-10-11 02:23:19,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:19,329 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:19,329 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:23:19,329 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:23:19,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:19" (1/1) ... [2021-10-11 02:23:19,352 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:19" (1/1) ... [2021-10-11 02:23:19,374 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:19,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:23:19,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:23:19,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:23:19,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:19" (1/1) ... [2021-10-11 02:23:19,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:19" (1/1) ... [2021-10-11 02:23:19,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:19" (1/1) ... [2021-10-11 02:23:19,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:19" (1/1) ... [2021-10-11 02:23:19,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:19" (1/1) ... [2021-10-11 02:23:19,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:19" (1/1) ... [2021-10-11 02:23:19,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:19" (1/1) ... [2021-10-11 02:23:19,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:23:19,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:23:19,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:23:19,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:23:19,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:19" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72851850-f6b8-4718-aea2-25910d5f89cd/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 02:23:19,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:23:19,506 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-11 02:23:19,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:23:19,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:23:19,506 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-11 02:23:19,507 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-11 02:23:19,508 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-11 02:23:19,509 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-11 02:23:19,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:23:19,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-11 02:23:19,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:23:19,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:23:19,512 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 02:23:20,132 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:23:20,133 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-11 02:23:20,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:20 BoogieIcfgContainer [2021-10-11 02:23:20,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:23:20,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:23:20,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:23:20,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:23:20,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:23:18" (1/3) ... [2021-10-11 02:23:20,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a251624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:20, skipping insertion in model container [2021-10-11 02:23:20,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:19" (2/3) ... [2021-10-11 02:23:20,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a251624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:20, skipping insertion in model container [2021-10-11 02:23:20,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:20" (3/3) ... [2021-10-11 02:23:20,148 INFO L111 eAbstractionObserver]: Analyzing ICFG safe036_rmo.opt.i [2021-10-11 02:23:20,166 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-11 02:23:20,167 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:23:20,170 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:23:20,171 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-11 02:23:20,207 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:20,207 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:20,207 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:20,208 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:20,208 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:20,208 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:20,209 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:20,209 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:20,209 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:20,210 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:20,210 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:20,210 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:20,211 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:20,211 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:20,212 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:20,212 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:20,213 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:20,213 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:20,213 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:20,214 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:20,215 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:20,215 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:20,216 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:20,217 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:20,219 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:20,220 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:20,220 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:20,221 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:20,226 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:20,227 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:20,228 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:20,228 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:20,230 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-11 02:23:20,242 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-11 02:23:20,276 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:23:20,277 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:23:20,278 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:23:20,278 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:23:20,278 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:23:20,278 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:23:20,278 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:23:20,279 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:23:20,293 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-11 02:23:20,295 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 61 transitions, 132 flow [2021-10-11 02:23:20,300 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 61 transitions, 132 flow [2021-10-11 02:23:20,302 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 61 transitions, 132 flow [2021-10-11 02:23:20,340 INFO L129 PetriNetUnfolder]: 2/59 cut-off events. [2021-10-11 02:23:20,340 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-11 02:23:20,344 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 59 events. 2/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-10-11 02:23:20,350 INFO L116 LiptonReduction]: Number of co-enabled transitions 696 [2021-10-11 02:23:22,411 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2021-10-11 02:23:23,453 WARN L197 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-10-11 02:23:23,580 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-10-11 02:23:23,835 WARN L197 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-10-11 02:23:23,948 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-10-11 02:23:23,960 INFO L131 LiptonReduction]: Checked pairs total: 1354 [2021-10-11 02:23:23,960 INFO L133 LiptonReduction]: Total number of compositions: 55 [2021-10-11 02:23:23,967 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 17 transitions, 44 flow [2021-10-11 02:23:23,978 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 90 states. [2021-10-11 02:23:23,980 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2021-10-11 02:23:23,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:23:23,985 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:23,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:23:23,986 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:23,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:23,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1865783441, now seen corresponding path program 1 times [2021-10-11 02:23:24,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:24,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748530229] [2021-10-11 02:23:24,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:24,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:24,159 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 02:23:24,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748530229] [2021-10-11 02:23:24,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:24,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:24,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904890254] [2021-10-11 02:23:24,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:23:24,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:24,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:23:24,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:23:24,185 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 2 states. [2021-10-11 02:23:24,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:24,204 INFO L93 Difference]: Finished difference Result 90 states and 200 transitions. [2021-10-11 02:23:24,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:23:24,206 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2021-10-11 02:23:24,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:24,217 INFO L225 Difference]: With dead ends: 90 [2021-10-11 02:23:24,217 INFO L226 Difference]: Without dead ends: 74 [2021-10-11 02:23:24,218 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 02:23:24,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-11 02:23:24,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-11 02:23:24,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-10-11 02:23:24,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 160 transitions. [2021-10-11 02:23:24,267 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 160 transitions. Word has length 6 [2021-10-11 02:23:24,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:24,268 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 160 transitions. [2021-10-11 02:23:24,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:23:24,268 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 160 transitions. [2021-10-11 02:23:24,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:23:24,269 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:24,269 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:24,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:23:24,270 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:24,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:24,271 INFO L82 PathProgramCache]: Analyzing trace with hash -2004756257, now seen corresponding path program 1 times [2021-10-11 02:23:24,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:24,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669889586] [2021-10-11 02:23:24,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:24,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:24,438 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 02:23:24,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669889586] [2021-10-11 02:23:24,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:24,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:23:24,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820644826] [2021-10-11 02:23:24,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:23:24,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:24,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:23:24,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:23:24,445 INFO L87 Difference]: Start difference. First operand 74 states and 160 transitions. Second operand 4 states. [2021-10-11 02:23:24,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:24,498 INFO L93 Difference]: Finished difference Result 63 states and 112 transitions. [2021-10-11 02:23:24,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:23:24,499 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 02:23:24,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:24,503 INFO L225 Difference]: With dead ends: 63 [2021-10-11 02:23:24,503 INFO L226 Difference]: Without dead ends: 47 [2021-10-11 02:23:24,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 02:23:24,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-11 02:23:24,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-10-11 02:23:24,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-10-11 02:23:24,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 79 transitions. [2021-10-11 02:23:24,524 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 79 transitions. Word has length 7 [2021-10-11 02:23:24,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:24,525 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 79 transitions. [2021-10-11 02:23:24,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:23:24,525 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 79 transitions. [2021-10-11 02:23:24,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:23:24,527 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:24,527 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:24,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:23:24,527 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:24,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:24,528 INFO L82 PathProgramCache]: Analyzing trace with hash 531180577, now seen corresponding path program 1 times [2021-10-11 02:23:24,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:24,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218097144] [2021-10-11 02:23:24,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:24,641 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 02:23:24,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218097144] [2021-10-11 02:23:24,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:24,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:23:24,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508774646] [2021-10-11 02:23:24,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:23:24,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:24,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:23:24,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:23:24,644 INFO L87 Difference]: Start difference. First operand 47 states and 79 transitions. Second operand 5 states. [2021-10-11 02:23:24,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:24,688 INFO L93 Difference]: Finished difference Result 36 states and 55 transitions. [2021-10-11 02:23:24,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:23:24,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-10-11 02:23:24,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:24,695 INFO L225 Difference]: With dead ends: 36 [2021-10-11 02:23:24,695 INFO L226 Difference]: Without dead ends: 29 [2021-10-11 02:23:24,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 02:23:24,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-11 02:23:24,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-11 02:23:24,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-10-11 02:23:24,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2021-10-11 02:23:24,703 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 10 [2021-10-11 02:23:24,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:24,704 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2021-10-11 02:23:24,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:23:24,704 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2021-10-11 02:23:24,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:23:24,705 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:24,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:24,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:23:24,705 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:24,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:24,706 INFO L82 PathProgramCache]: Analyzing trace with hash 2005536794, now seen corresponding path program 1 times [2021-10-11 02:23:24,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:24,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715525360] [2021-10-11 02:23:24,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:24,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:24,862 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 02:23:24,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715525360] [2021-10-11 02:23:24,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:24,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:23:24,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946317796] [2021-10-11 02:23:24,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:23:24,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:24,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:23:24,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:23:24,867 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand 5 states. [2021-10-11 02:23:24,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:24,908 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2021-10-11 02:23:24,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:23:24,908 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-10-11 02:23:24,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:24,909 INFO L225 Difference]: With dead ends: 37 [2021-10-11 02:23:24,909 INFO L226 Difference]: Without dead ends: 17 [2021-10-11 02:23:24,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:23:24,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-11 02:23:24,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-11 02:23:24,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-11 02:23:24,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-10-11 02:23:24,914 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2021-10-11 02:23:24,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:24,915 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-10-11 02:23:24,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:23:24,916 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-10-11 02:23:24,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:23:24,921 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:24,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:24,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:23:24,922 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:24,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:24,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1560668438, now seen corresponding path program 2 times [2021-10-11 02:23:24,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:24,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598518744] [2021-10-11 02:23:24,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:25,046 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 02:23:25,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598518744] [2021-10-11 02:23:25,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:25,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:23:25,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254480048] [2021-10-11 02:23:25,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:23:25,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:25,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:23:25,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:23:25,056 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 5 states. [2021-10-11 02:23:25,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:25,091 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-10-11 02:23:25,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:23:25,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-10-11 02:23:25,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:25,092 INFO L225 Difference]: With dead ends: 16 [2021-10-11 02:23:25,092 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:23:25,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:23:25,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:23:25,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:23:25,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:23:25,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:23:25,093 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-10-11 02:23:25,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:25,094 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:23:25,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:23:25,094 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:23:25,094 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:23:25,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:23:25,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:23:25 BasicIcfg [2021-10-11 02:23:25,098 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:23:25,098 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:23:25,098 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:23:25,098 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:23:25,099 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:20" (3/4) ... [2021-10-11 02:23:25,102 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:23:25,111 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-11 02:23:25,111 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-11 02:23:25,117 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-11 02:23:25,117 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:23:25,117 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:23:25,118 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:23:25,178 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72851850-f6b8-4718-aea2-25910d5f89cd/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:23:25,178 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:23:25,179 INFO L168 Benchmark]: Toolchain (without parser) took 6569.81 ms. Allocated memory was 123.7 MB in the beginning and 172.0 MB in the end (delta: 48.2 MB). Free memory was 95.9 MB in the beginning and 119.1 MB in the end (delta: -23.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:25,180 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 86.0 MB. Free memory was 52.6 MB in the beginning and 52.6 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:23:25,180 INFO L168 Benchmark]: CACSL2BoogieTranslator took 715.59 ms. Allocated memory is still 123.7 MB. Free memory was 95.7 MB in the beginning and 65.2 MB in the end (delta: 30.6 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:25,181 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.84 ms. Allocated memory is still 123.7 MB. Free memory was 65.0 MB in the beginning and 63.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:25,181 INFO L168 Benchmark]: Boogie Preprocessor took 29.12 ms. Allocated memory is still 123.7 MB. Free memory was 63.2 MB in the beginning and 61.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:23:25,188 INFO L168 Benchmark]: RCFGBuilder took 730.79 ms. Allocated memory is still 123.7 MB. Free memory was 61.9 MB in the beginning and 89.2 MB in the end (delta: -27.3 MB). Peak memory consumption was 15.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:25,189 INFO L168 Benchmark]: TraceAbstraction took 4958.51 ms. Allocated memory was 123.7 MB in the beginning and 172.0 MB in the end (delta: 48.2 MB). Free memory was 88.7 MB in the beginning and 121.2 MB in the end (delta: -32.4 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:25,189 INFO L168 Benchmark]: Witness Printer took 79.98 ms. Allocated memory is still 172.0 MB. Free memory was 121.2 MB in the beginning and 119.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:25,192 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 86.0 MB. Free memory was 52.6 MB in the beginning and 52.6 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 715.59 ms. Allocated memory is still 123.7 MB. Free memory was 95.7 MB in the beginning and 65.2 MB in the end (delta: 30.6 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.84 ms. Allocated memory is still 123.7 MB. Free memory was 65.0 MB in the beginning and 63.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.12 ms. Allocated memory is still 123.7 MB. Free memory was 63.2 MB in the beginning and 61.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 730.79 ms. Allocated memory is still 123.7 MB. Free memory was 61.9 MB in the beginning and 89.2 MB in the end (delta: -27.3 MB). Peak memory consumption was 15.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4958.51 ms. Allocated memory was 123.7 MB in the beginning and 172.0 MB in the end (delta: 48.2 MB). Free memory was 88.7 MB in the beginning and 121.2 MB in the end (delta: -32.4 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. * Witness Printer took 79.98 ms. Allocated memory is still 172.0 MB. Free memory was 121.2 MB in the beginning and 119.1 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 465 VarBasedMoverChecksPositive, 22 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 20 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 47 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.6s, 66 PlacesBefore, 23 PlacesAfterwards, 61 TransitionsBefore, 17 TransitionsAfterwards, 696 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 55 TotalNumberOfCompositions, 1354 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 3 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 63 SDtfs, 62 SDslu, 82 SDs, 0 SdLazy, 35 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...