./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe003_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_ea96c116-0654-4022-a0c6-588577f67694/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea96c116-0654-4022-a0c6-588577f67694/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_ea96c116-0654-4022-a0c6-588577f67694/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea96c116-0654-4022-a0c6-588577f67694/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe003_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea96c116-0654-4022-a0c6-588577f67694/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_ea96c116-0654-4022-a0c6-588577f67694/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 8b4c46cabb1e98a4b19cf1c0b21c9fe25086175b .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:25:51,259 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:25:51,262 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:25:51,323 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:25:51,324 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:25:51,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:25:51,328 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:25:51,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:25:51,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:25:51,336 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:25:51,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:25:51,340 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:25:51,342 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:25:51,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:25:51,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:25:51,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:25:51,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:25:51,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:25:51,357 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:25:51,360 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:25:51,363 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:25:51,365 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:25:51,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:25:51,369 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:25:51,373 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:25:51,374 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:25:51,374 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:25:51,376 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:25:51,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:25:51,379 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:25:51,379 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:25:51,381 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:25:51,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:25:51,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:25:51,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:25:51,386 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:25:51,387 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:25:51,388 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:25:51,388 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:25:51,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:25:51,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:25:51,392 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea96c116-0654-4022-a0c6-588577f67694/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:25:51,433 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:25:51,434 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:25:51,436 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:25:51,436 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:25:51,436 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:25:51,437 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:25:51,437 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:25:51,437 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:25:51,445 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:25:51,446 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:25:51,447 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:25:51,448 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:25:51,448 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:25:51,448 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:25:51,449 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:25:51,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:25:51,450 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:25:51,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:25:51,450 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:25:51,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:25:51,451 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:25:51,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:25:51,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:25:51,452 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:25:51,452 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:25:51,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:25:51,453 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:25:51,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:25:51,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:25:51,456 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:25:51,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:25:51,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:25:51,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:25:51,458 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:25:51,458 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:25:51,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:25:51,459 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:25:51,459 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:25:51,459 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:25:51,460 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_ea96c116-0654-4022-a0c6-588577f67694/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea96c116-0654-4022-a0c6-588577f67694/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b4c46cabb1e98a4b19cf1c0b21c9fe25086175b [2021-10-11 02:25:51,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:25:51,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:25:51,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:25:51,836 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:25:51,841 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:25:51,842 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea96c116-0654-4022-a0c6-588577f67694/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/pthread-wmm/safe003_tso.opt.i [2021-10-11 02:25:51,956 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea96c116-0654-4022-a0c6-588577f67694/bin/utaipan-WLngWcDbfI/data/052682af7/e31f59c6f40c42e89bebc203faaa88ac/FLAG32b4972c6 [2021-10-11 02:25:52,523 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:25:52,531 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea96c116-0654-4022-a0c6-588577f67694/sv-benchmarks/c/pthread-wmm/safe003_tso.opt.i [2021-10-11 02:25:52,550 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea96c116-0654-4022-a0c6-588577f67694/bin/utaipan-WLngWcDbfI/data/052682af7/e31f59c6f40c42e89bebc203faaa88ac/FLAG32b4972c6 [2021-10-11 02:25:52,826 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea96c116-0654-4022-a0c6-588577f67694/bin/utaipan-WLngWcDbfI/data/052682af7/e31f59c6f40c42e89bebc203faaa88ac [2021-10-11 02:25:52,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:25:52,829 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:25:52,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:25:52,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:25:52,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:25:52,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:25:52" (1/1) ... [2021-10-11 02:25:52,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10142de9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:52, skipping insertion in model container [2021-10-11 02:25:52,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:25:52" (1/1) ... [2021-10-11 02:25:52,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:25:52,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:25:53,103 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_ea96c116-0654-4022-a0c6-588577f67694/sv-benchmarks/c/pthread-wmm/safe003_tso.opt.i[949,962] [2021-10-11 02:25:53,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:25:53,366 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:25:53,382 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_ea96c116-0654-4022-a0c6-588577f67694/sv-benchmarks/c/pthread-wmm/safe003_tso.opt.i[949,962] [2021-10-11 02:25:53,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:25:53,545 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:25:53,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:53 WrapperNode [2021-10-11 02:25:53,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:25:53,548 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:25:53,548 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:25:53,548 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:25:53,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:53" (1/1) ... [2021-10-11 02:25:53,577 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:53" (1/1) ... [2021-10-11 02:25:53,608 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:25:53,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:25:53,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:25:53,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:25:53,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:53" (1/1) ... [2021-10-11 02:25:53,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:53" (1/1) ... [2021-10-11 02:25:53,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:53" (1/1) ... [2021-10-11 02:25:53,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:53" (1/1) ... [2021-10-11 02:25:53,641 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:53" (1/1) ... [2021-10-11 02:25:53,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:53" (1/1) ... [2021-10-11 02:25:53,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:53" (1/1) ... [2021-10-11 02:25:53,648 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:25:53,649 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:25:53,649 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:25:53,649 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:25:53,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:53" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea96c116-0654-4022-a0c6-588577f67694/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 02:25:53,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:25:53,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-11 02:25:53,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:25:53,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:25:53,721 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-11 02:25:53,721 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-11 02:25:53,721 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-11 02:25:53,722 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-11 02:25:53,722 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-11 02:25:53,722 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-11 02:25:53,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:25:53,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-11 02:25:53,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:25:53,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:25:53,724 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 02:25:54,002 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:25:54,003 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-11 02:25:54,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:54 BoogieIcfgContainer [2021-10-11 02:25:54,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:25:54,007 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:25:54,007 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:25:54,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:25:54,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:25:52" (1/3) ... [2021-10-11 02:25:54,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b60d62f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:25:54, skipping insertion in model container [2021-10-11 02:25:54,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:53" (2/3) ... [2021-10-11 02:25:54,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b60d62f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:25:54, skipping insertion in model container [2021-10-11 02:25:54,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:54" (3/3) ... [2021-10-11 02:25:54,013 INFO L111 eAbstractionObserver]: Analyzing ICFG safe003_tso.opt.i [2021-10-11 02:25:54,031 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-11 02:25:54,031 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:25:54,033 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:25:54,034 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-11 02:25:54,081 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,081 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,082 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,082 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,082 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,082 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,083 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,083 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,083 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,086 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,087 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,087 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,087 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,088 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,088 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,088 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,088 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,088 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,089 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,089 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,089 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,090 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,093 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,098 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,098 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,099 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,099 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,099 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,099 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,100 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,100 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,100 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,101 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,101 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,101 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,102 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,104 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,106 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,106 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,106 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,111 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,112 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,112 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,112 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,114 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,115 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,115 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,115 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:25:54,121 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-11 02:25:54,132 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 02:25:54,152 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:25:54,152 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:25:54,152 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:25:54,152 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:25:54,152 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:25:54,153 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:25:54,153 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:25:54,153 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:25:54,175 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-11 02:25:54,177 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2021-10-11 02:25:54,195 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2021-10-11 02:25:54,197 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-10-11 02:25:54,272 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-10-11 02:25:54,273 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-11 02:25:54,286 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 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. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-10-11 02:25:54,291 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2021-10-11 02:25:57,426 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2021-10-11 02:25:57,717 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2021-10-11 02:25:57,804 INFO L131 LiptonReduction]: Checked pairs total: 2653 [2021-10-11 02:25:57,804 INFO L133 LiptonReduction]: Total number of compositions: 59 [2021-10-11 02:25:57,814 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2021-10-11 02:25:57,841 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2021-10-11 02:25:57,843 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2021-10-11 02:25:57,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:25:57,850 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:57,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:57,851 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:57,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:57,856 INFO L82 PathProgramCache]: Analyzing trace with hash -991402129, now seen corresponding path program 1 times [2021-10-11 02:25:57,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:57,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550355872] [2021-10-11 02:25:57,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:58,020 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 02:25:58,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550355872] [2021-10-11 02:25:58,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:58,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:25:58,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854253574] [2021-10-11 02:25:58,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:25:58,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:58,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:25:58,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:25:58,044 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2021-10-11 02:25:58,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:58,076 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2021-10-11 02:25:58,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:25:58,079 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-10-11 02:25:58,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:58,095 INFO L225 Difference]: With dead ends: 362 [2021-10-11 02:25:58,095 INFO L226 Difference]: Without dead ends: 298 [2021-10-11 02:25:58,096 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 02:25:58,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-10-11 02:25:58,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-10-11 02:25:58,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2021-10-11 02:25:58,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2021-10-11 02:25:58,174 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2021-10-11 02:25:58,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:58,175 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2021-10-11 02:25:58,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:25:58,175 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2021-10-11 02:25:58,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:25:58,177 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:58,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:58,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:25:58,178 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:58,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:58,179 INFO L82 PathProgramCache]: Analyzing trace with hash -668714259, now seen corresponding path program 1 times [2021-10-11 02:25:58,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:58,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320293026] [2021-10-11 02:25:58,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:58,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:58,377 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 02:25:58,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320293026] [2021-10-11 02:25:58,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:58,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:25:58,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851544893] [2021-10-11 02:25:58,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:25:58,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:58,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:25:58,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:25:58,381 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2021-10-11 02:25:58,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:58,474 INFO L93 Difference]: Finished difference Result 591 states and 1623 transitions. [2021-10-11 02:25:58,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:25:58,475 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-10-11 02:25:58,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:58,482 INFO L225 Difference]: With dead ends: 591 [2021-10-11 02:25:58,482 INFO L226 Difference]: Without dead ends: 404 [2021-10-11 02:25:58,483 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 02:25:58,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2021-10-11 02:25:58,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 314. [2021-10-11 02:25:58,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2021-10-11 02:25:58,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 830 transitions. [2021-10-11 02:25:58,537 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 830 transitions. Word has length 9 [2021-10-11 02:25:58,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:58,538 INFO L481 AbstractCegarLoop]: Abstraction has 314 states and 830 transitions. [2021-10-11 02:25:58,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:25:58,538 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 830 transitions. [2021-10-11 02:25:58,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:25:58,540 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:58,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:58,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:25:58,540 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:58,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:58,541 INFO L82 PathProgramCache]: Analyzing trace with hash 39953638, now seen corresponding path program 1 times [2021-10-11 02:25:58,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:58,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149180772] [2021-10-11 02:25:58,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:58,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:58,702 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 02:25:58,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149180772] [2021-10-11 02:25:58,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:58,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:25:58,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842643228] [2021-10-11 02:25:58,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:25:58,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:58,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:25:58,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:25:58,704 INFO L87 Difference]: Start difference. First operand 314 states and 830 transitions. Second operand 4 states. [2021-10-11 02:25:58,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:58,757 INFO L93 Difference]: Finished difference Result 314 states and 785 transitions. [2021-10-11 02:25:58,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:25:58,758 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-10-11 02:25:58,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:58,761 INFO L225 Difference]: With dead ends: 314 [2021-10-11 02:25:58,762 INFO L226 Difference]: Without dead ends: 200 [2021-10-11 02:25:58,763 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 02:25:58,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-10-11 02:25:58,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 192. [2021-10-11 02:25:58,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2021-10-11 02:25:58,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 474 transitions. [2021-10-11 02:25:58,777 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 474 transitions. Word has length 10 [2021-10-11 02:25:58,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:58,777 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 474 transitions. [2021-10-11 02:25:58,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:25:58,778 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 474 transitions. [2021-10-11 02:25:58,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:25:58,785 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:58,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:58,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:25:58,785 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:58,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:58,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1622661680, now seen corresponding path program 1 times [2021-10-11 02:25:58,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:58,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837192660] [2021-10-11 02:25:58,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:58,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:58,912 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 02:25:58,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837192660] [2021-10-11 02:25:58,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:58,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:58,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188603956] [2021-10-11 02:25:58,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:25:58,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:58,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:25:58,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:25:58,915 INFO L87 Difference]: Start difference. First operand 192 states and 474 transitions. Second operand 5 states. [2021-10-11 02:25:59,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:59,001 INFO L93 Difference]: Finished difference Result 242 states and 579 transitions. [2021-10-11 02:25:59,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:25:59,005 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-10-11 02:25:59,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:59,007 INFO L225 Difference]: With dead ends: 242 [2021-10-11 02:25:59,007 INFO L226 Difference]: Without dead ends: 144 [2021-10-11 02:25:59,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:25:59,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-11 02:25:59,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2021-10-11 02:25:59,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2021-10-11 02:25:59,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 330 transitions. [2021-10-11 02:25:59,015 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 330 transitions. Word has length 12 [2021-10-11 02:25:59,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:59,015 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 330 transitions. [2021-10-11 02:25:59,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:25:59,016 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 330 transitions. [2021-10-11 02:25:59,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:25:59,017 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:59,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:59,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:25:59,017 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:59,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:59,018 INFO L82 PathProgramCache]: Analyzing trace with hash 538399929, now seen corresponding path program 1 times [2021-10-11 02:25:59,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:59,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197326185] [2021-10-11 02:25:59,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:59,109 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 02:25:59,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197326185] [2021-10-11 02:25:59,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:59,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:25:59,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215184189] [2021-10-11 02:25:59,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:25:59,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:59,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:25:59,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:25:59,112 INFO L87 Difference]: Start difference. First operand 144 states and 330 transitions. Second operand 6 states. [2021-10-11 02:25:59,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:59,231 INFO L93 Difference]: Finished difference Result 158 states and 347 transitions. [2021-10-11 02:25:59,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:25:59,232 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2021-10-11 02:25:59,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:59,233 INFO L225 Difference]: With dead ends: 158 [2021-10-11 02:25:59,233 INFO L226 Difference]: Without dead ends: 86 [2021-10-11 02:25:59,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:25:59,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-11 02:25:59,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2021-10-11 02:25:59,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-10-11 02:25:59,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 186 transitions. [2021-10-11 02:25:59,239 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 186 transitions. Word has length 13 [2021-10-11 02:25:59,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:59,240 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 186 transitions. [2021-10-11 02:25:59,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:25:59,240 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 186 transitions. [2021-10-11 02:25:59,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 02:25:59,241 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:59,241 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:59,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:25:59,242 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:59,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:59,242 INFO L82 PathProgramCache]: Analyzing trace with hash -2064800307, now seen corresponding path program 1 times [2021-10-11 02:25:59,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:59,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921435493] [2021-10-11 02:25:59,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:59,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:59,352 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 02:25:59,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921435493] [2021-10-11 02:25:59,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:59,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:59,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193177426] [2021-10-11 02:25:59,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:25:59,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:59,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:25:59,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:25:59,356 INFO L87 Difference]: Start difference. First operand 84 states and 186 transitions. Second operand 5 states. [2021-10-11 02:25:59,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:59,404 INFO L93 Difference]: Finished difference Result 72 states and 154 transitions. [2021-10-11 02:25:59,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:25:59,404 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-10-11 02:25:59,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:59,405 INFO L225 Difference]: With dead ends: 72 [2021-10-11 02:25:59,405 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:25:59,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 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 02:25:59,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:25:59,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:25:59,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:25:59,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:25:59,406 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-10-11 02:25:59,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:59,407 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:25:59,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:25:59,407 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:25:59,407 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:25:59,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:25:59,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:25:59 BasicIcfg [2021-10-11 02:25:59,410 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:25:59,411 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:25:59,411 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:25:59,411 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:25:59,412 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:54" (3/4) ... [2021-10-11 02:25:59,415 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:25:59,421 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-11 02:25:59,421 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-11 02:25:59,421 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-11 02:25:59,426 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-11 02:25:59,426 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:25:59,427 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:25:59,427 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:25:59,464 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea96c116-0654-4022-a0c6-588577f67694/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:25:59,464 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:25:59,465 INFO L168 Benchmark]: Toolchain (without parser) took 6635.14 ms. Allocated memory was 92.3 MB in the beginning and 184.5 MB in the end (delta: 92.3 MB). Free memory was 58.1 MB in the beginning and 103.0 MB in the end (delta: -44.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:59,466 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 92.3 MB. Free memory was 49.0 MB in the beginning and 48.9 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:25:59,467 INFO L168 Benchmark]: CACSL2BoogieTranslator took 715.66 ms. Allocated memory was 92.3 MB in the beginning and 125.8 MB in the end (delta: 33.6 MB). Free memory was 58.0 MB in the beginning and 80.9 MB in the end (delta: -22.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:59,467 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.28 ms. Allocated memory is still 125.8 MB. Free memory was 80.9 MB in the beginning and 79.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:59,468 INFO L168 Benchmark]: Boogie Preprocessor took 39.47 ms. Allocated memory is still 125.8 MB. Free memory was 78.8 MB in the beginning and 78.0 MB in the end (delta: 808.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:25:59,468 INFO L168 Benchmark]: RCFGBuilder took 356.22 ms. Allocated memory is still 125.8 MB. Free memory was 78.0 MB in the beginning and 55.7 MB in the end (delta: 22.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:59,469 INFO L168 Benchmark]: TraceAbstraction took 5403.67 ms. Allocated memory was 125.8 MB in the beginning and 184.5 MB in the end (delta: 58.7 MB). Free memory was 55.0 MB in the beginning and 106.2 MB in the end (delta: -51.1 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:59,470 INFO L168 Benchmark]: Witness Printer took 53.17 ms. Allocated memory is still 184.5 MB. Free memory was 106.2 MB in the beginning and 103.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:59,474 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 92.3 MB. Free memory was 49.0 MB in the beginning and 48.9 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 715.66 ms. Allocated memory was 92.3 MB in the beginning and 125.8 MB in the end (delta: 33.6 MB). Free memory was 58.0 MB in the beginning and 80.9 MB in the end (delta: -22.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.28 ms. Allocated memory is still 125.8 MB. Free memory was 80.9 MB in the beginning and 79.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.47 ms. Allocated memory is still 125.8 MB. Free memory was 78.8 MB in the beginning and 78.0 MB in the end (delta: 808.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 356.22 ms. Allocated memory is still 125.8 MB. Free memory was 78.0 MB in the beginning and 55.7 MB in the end (delta: 22.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5403.67 ms. Allocated memory was 125.8 MB in the beginning and 184.5 MB in the end (delta: 58.7 MB). Free memory was 55.0 MB in the beginning and 106.2 MB in the end (delta: -51.1 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. * Witness Printer took 53.17 ms. Allocated memory is still 184.5 MB. Free memory was 106.2 MB in the beginning and 103.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 743 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 31 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 65 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.6s, 83 PlacesBefore, 32 PlacesAfterwards, 75 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 59 TotalNumberOfCompositions, 2653 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, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 150 SDtfs, 144 SDslu, 197 SDs, 0 SdLazy, 72 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s 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, 6 MinimizatonAttempts, 100 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 3225 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...