./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_04-priv_multi_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9db9bdfd-605f-4388-acfb-76375da8eed6/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9db9bdfd-605f-4388-acfb-76375da8eed6/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9db9bdfd-605f-4388-acfb-76375da8eed6/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9db9bdfd-605f-4388-acfb-76375da8eed6/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_04-priv_multi_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9db9bdfd-605f-4388-acfb-76375da8eed6/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9db9bdfd-605f-4388-acfb-76375da8eed6/bin/utaipan-TEXQjIfE4P --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 d5772eac83993f999ed7a0d2c72e283c734e18136b4020af8f8e407255c20c04 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:34:58,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:34:58,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:34:58,904 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:34:58,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:34:58,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:34:58,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:34:58,920 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:34:58,923 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:34:58,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:34:58,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:34:58,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:34:58,929 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:34:58,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:34:58,933 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:34:58,935 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:34:58,936 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:34:58,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:34:58,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:34:58,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:34:58,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:34:58,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:34:58,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:34:58,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:34:58,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:34:58,980 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:34:58,981 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:34:58,982 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:34:58,984 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:34:58,985 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:34:58,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:34:58,989 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:34:58,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:34:58,993 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:34:58,995 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:34:58,995 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:34:58,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:34:58,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:34:58,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:34:58,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:34:58,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:34:59,001 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9db9bdfd-605f-4388-acfb-76375da8eed6/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:34:59,062 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:34:59,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:34:59,063 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:34:59,063 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:34:59,065 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:34:59,065 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:34:59,065 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:34:59,065 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:34:59,066 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:34:59,066 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:34:59,067 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:34:59,068 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:34:59,068 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:34:59,068 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:34:59,068 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:34:59,069 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:34:59,069 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:34:59,069 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:34:59,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:34:59,071 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:34:59,071 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:34:59,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:34:59,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:34:59,072 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:34:59,072 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:34:59,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:34:59,074 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:34:59,075 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:34:59,075 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:34:59,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:34:59,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:34:59,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:34:59,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:34:59,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:34:59,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:34:59,077 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:34:59,078 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:34:59,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:34:59,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:34:59,078 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:34:59,079 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:34:59,079 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_9db9bdfd-605f-4388-acfb-76375da8eed6/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9db9bdfd-605f-4388-acfb-76375da8eed6/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d5772eac83993f999ed7a0d2c72e283c734e18136b4020af8f8e407255c20c04 [2021-11-21 01:34:59,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:34:59,415 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:34:59,419 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:34:59,420 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:34:59,421 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:34:59,423 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9db9bdfd-605f-4388-acfb-76375da8eed6/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/goblint-regression/13-privatized_04-priv_multi_true.i [2021-11-21 01:34:59,498 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9db9bdfd-605f-4388-acfb-76375da8eed6/bin/utaipan-TEXQjIfE4P/data/2b9495158/7978316053054052a256ebd048501500/FLAGa99f74c48 [2021-11-21 01:35:00,209 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:35:00,210 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9db9bdfd-605f-4388-acfb-76375da8eed6/sv-benchmarks/c/goblint-regression/13-privatized_04-priv_multi_true.i [2021-11-21 01:35:00,240 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9db9bdfd-605f-4388-acfb-76375da8eed6/bin/utaipan-TEXQjIfE4P/data/2b9495158/7978316053054052a256ebd048501500/FLAGa99f74c48 [2021-11-21 01:35:00,387 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9db9bdfd-605f-4388-acfb-76375da8eed6/bin/utaipan-TEXQjIfE4P/data/2b9495158/7978316053054052a256ebd048501500 [2021-11-21 01:35:00,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:35:00,393 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:35:00,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:35:00,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:35:00,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:35:00,401 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:35:00" (1/1) ... [2021-11-21 01:35:00,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70011d5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:00, skipping insertion in model container [2021-11-21 01:35:00,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:35:00" (1/1) ... [2021-11-21 01:35:00,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:35:00,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:35:00,762 WARN L230 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_9db9bdfd-605f-4388-acfb-76375da8eed6/sv-benchmarks/c/goblint-regression/13-privatized_04-priv_multi_true.i[1087,1100] [2021-11-21 01:35:01,102 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:35:01,118 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:35:01,132 WARN L230 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_9db9bdfd-605f-4388-acfb-76375da8eed6/sv-benchmarks/c/goblint-regression/13-privatized_04-priv_multi_true.i[1087,1100] [2021-11-21 01:35:01,177 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:35:01,279 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:35:01,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:01 WrapperNode [2021-11-21 01:35:01,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:35:01,281 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:35:01,281 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:35:01,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:35:01,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:01" (1/1) ... [2021-11-21 01:35:01,343 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:01" (1/1) ... [2021-11-21 01:35:01,406 INFO L137 Inliner]: procedures = 271, calls = 45, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 105 [2021-11-21 01:35:01,408 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:35:01,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:35:01,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:35:01,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:35:01,421 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:01" (1/1) ... [2021-11-21 01:35:01,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:01" (1/1) ... [2021-11-21 01:35:01,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:01" (1/1) ... [2021-11-21 01:35:01,441 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:01" (1/1) ... [2021-11-21 01:35:01,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:01" (1/1) ... [2021-11-21 01:35:01,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:01" (1/1) ... [2021-11-21 01:35:01,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:01" (1/1) ... [2021-11-21 01:35:01,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:35:01,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:35:01,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:35:01,510 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:35:01,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:01" (1/1) ... [2021-11-21 01:35:01,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:35:01,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9db9bdfd-605f-4388-acfb-76375da8eed6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:35:01,551 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9db9bdfd-605f-4388-acfb-76375da8eed6/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:35:01,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9db9bdfd-605f-4388-acfb-76375da8eed6/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:35:01,621 INFO L130 BoogieDeclarations]: Found specification of procedure sleep [2021-11-21 01:35:01,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:35:01,621 INFO L130 BoogieDeclarations]: Found specification of procedure generate [2021-11-21 01:35:01,622 INFO L138 BoogieDeclarations]: Found implementation of procedure generate [2021-11-21 01:35:01,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:35:01,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:35:01,622 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-11-21 01:35:01,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:35:01,623 INFO L130 BoogieDeclarations]: Found specification of procedure dispose [2021-11-21 01:35:01,623 INFO L138 BoogieDeclarations]: Found implementation of procedure dispose [2021-11-21 01:35:01,623 INFO L130 BoogieDeclarations]: Found specification of procedure process [2021-11-21 01:35:01,623 INFO L138 BoogieDeclarations]: Found implementation of procedure process [2021-11-21 01:35:01,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:35:01,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:35:01,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:35:01,627 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-21 01:35:02,039 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:35:02,041 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:35:02,296 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:35:02,309 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:35:02,309 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-21 01:35:02,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:35:02 BoogieIcfgContainer [2021-11-21 01:35:02,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:35:02,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:35:02,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:35:02,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:35:02,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:35:00" (1/3) ... [2021-11-21 01:35:02,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ffcc4e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:35:02, skipping insertion in model container [2021-11-21 01:35:02,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:01" (2/3) ... [2021-11-21 01:35:02,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ffcc4e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:35:02, skipping insertion in model container [2021-11-21 01:35:02,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:35:02" (3/3) ... [2021-11-21 01:35:02,323 INFO L111 eAbstractionObserver]: Analyzing ICFG 13-privatized_04-priv_multi_true.i [2021-11-21 01:35:02,330 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-21 01:35:02,330 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:35:02,330 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-21 01:35:02,331 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-21 01:35:02,378 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,378 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,378 WARN L322 ript$VariableManager]: TermVariabe processThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,379 WARN L322 ript$VariableManager]: TermVariabe processThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,379 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,379 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,380 WARN L322 ript$VariableManager]: TermVariabe processThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,380 WARN L322 ript$VariableManager]: TermVariabe processThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,380 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,381 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,381 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,381 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,381 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,382 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,382 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,383 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,383 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,383 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,384 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,384 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,384 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,385 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,385 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,385 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,385 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,386 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,386 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,386 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,387 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,387 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,387 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,387 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,388 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,388 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,388 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,389 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,389 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,389 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,390 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,390 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,390 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,390 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,391 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,392 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,392 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,392 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,393 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,393 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,393 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,393 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,394 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1_~p~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,394 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1_~p~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,394 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,394 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,395 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,395 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,395 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1_#t~nondet10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,396 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1_#t~nondet10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,396 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1_#t~nondet10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,396 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1_#t~nondet10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,397 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1_~p~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,397 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1_~p~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,397 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1_#t~ret11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,398 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1_#t~ret11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,398 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1_#t~ret11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,398 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1_#t~ret11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,399 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1_~p~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,399 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,399 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1_~p~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,399 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,400 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,400 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,400 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,401 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,401 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,401 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,401 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,402 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,402 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,402 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,403 WARN L322 ript$VariableManager]: TermVariabe |generateThread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,403 WARN L322 ript$VariableManager]: TermVariabe |generateThread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,404 WARN L322 ript$VariableManager]: TermVariabe generateThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,404 WARN L322 ript$VariableManager]: TermVariabe generateThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,405 WARN L322 ript$VariableManager]: TermVariabe |generateThread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,405 WARN L322 ript$VariableManager]: TermVariabe |generateThread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,405 WARN L322 ript$VariableManager]: TermVariabe generateThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,405 WARN L322 ript$VariableManager]: TermVariabe generateThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,406 WARN L322 ript$VariableManager]: TermVariabe generateThread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,406 WARN L322 ript$VariableManager]: TermVariabe generateThread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,406 WARN L322 ript$VariableManager]: TermVariabe generateThread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,406 WARN L322 ript$VariableManager]: TermVariabe generateThread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,407 WARN L322 ript$VariableManager]: TermVariabe generateThread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,407 WARN L322 ript$VariableManager]: TermVariabe generateThread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,407 WARN L322 ript$VariableManager]: TermVariabe generateThread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,407 WARN L322 ript$VariableManager]: TermVariabe generateThread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,408 WARN L322 ript$VariableManager]: TermVariabe |generateThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,408 WARN L322 ript$VariableManager]: TermVariabe |generateThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,408 WARN L322 ript$VariableManager]: TermVariabe |generateThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,409 WARN L322 ript$VariableManager]: TermVariabe |generateThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,409 WARN L322 ript$VariableManager]: TermVariabe |generateThread1of1ForFork2_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,409 WARN L322 ript$VariableManager]: TermVariabe |generateThread1of1ForFork2_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,409 WARN L322 ript$VariableManager]: TermVariabe |generateThread1of1ForFork2_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,410 WARN L322 ript$VariableManager]: TermVariabe |generateThread1of1ForFork2_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,410 WARN L322 ript$VariableManager]: TermVariabe generateThread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,410 WARN L322 ript$VariableManager]: TermVariabe generateThread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,411 WARN L322 ript$VariableManager]: TermVariabe |generateThread1of1ForFork2_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,411 WARN L322 ript$VariableManager]: TermVariabe |generateThread1of1ForFork2_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,411 WARN L322 ript$VariableManager]: TermVariabe |generateThread1of1ForFork2_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,412 WARN L322 ript$VariableManager]: TermVariabe |generateThread1of1ForFork2_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,412 WARN L322 ript$VariableManager]: TermVariabe generateThread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,412 WARN L322 ript$VariableManager]: TermVariabe |generateThread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,412 WARN L322 ript$VariableManager]: TermVariabe generateThread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,412 WARN L322 ript$VariableManager]: TermVariabe |generateThread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,413 WARN L322 ript$VariableManager]: TermVariabe |generateThread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,413 WARN L322 ript$VariableManager]: TermVariabe generateThread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,413 WARN L322 ript$VariableManager]: TermVariabe |generateThread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,414 WARN L322 ript$VariableManager]: TermVariabe generateThread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,414 WARN L322 ript$VariableManager]: TermVariabe |generateThread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,414 WARN L322 ript$VariableManager]: TermVariabe |generateThread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,419 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,419 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,419 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,420 WARN L322 ript$VariableManager]: TermVariabe processThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,420 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,420 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,420 WARN L322 ript$VariableManager]: TermVariabe processThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,421 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,421 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,421 WARN L322 ript$VariableManager]: TermVariabe |processThread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,425 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,426 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,426 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,426 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1_~p~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,427 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,427 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,427 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1_#t~ret11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,427 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1_#t~nondet10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,428 WARN L322 ript$VariableManager]: TermVariabe |disposeThread1of1ForFork1___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,429 WARN L322 ript$VariableManager]: TermVariabe |generateThread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,429 WARN L322 ript$VariableManager]: TermVariabe generateThread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,430 WARN L322 ript$VariableManager]: TermVariabe |generateThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,430 WARN L322 ript$VariableManager]: TermVariabe |generateThread1of1ForFork2_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,430 WARN L322 ript$VariableManager]: TermVariabe |generateThread1of1ForFork2_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,430 WARN L322 ript$VariableManager]: TermVariabe generateThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,431 WARN L322 ript$VariableManager]: TermVariabe generateThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,431 WARN L322 ript$VariableManager]: TermVariabe |generateThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 01:35:02,432 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-21 01:35:02,504 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:35:02,517 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:35:02,517 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-21 01:35:02,541 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-21 01:35:02,560 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 159 transitions, 333 flow [2021-11-21 01:35:02,563 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 159 transitions, 333 flow [2021-11-21 01:35:02,566 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 157 places, 159 transitions, 333 flow [2021-11-21 01:35:02,656 INFO L129 PetriNetUnfolder]: 12/156 cut-off events. [2021-11-21 01:35:02,656 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-21 01:35:02,663 INFO L84 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 156 events. 12/156 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 321 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 124. Up to 2 conditions per place. [2021-11-21 01:35:02,681 INFO L116 LiptonReduction]: Number of co-enabled transitions 9322 [2021-11-21 01:35:08,903 INFO L131 LiptonReduction]: Checked pairs total: 19059 [2021-11-21 01:35:08,903 INFO L133 LiptonReduction]: Total number of compositions: 134 [2021-11-21 01:35:08,914 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 47 transitions, 109 flow [2021-11-21 01:35:09,286 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5474 states, 5471 states have (on average 4.160116980442332) internal successors, (22760), 5473 states have internal predecessors, (22760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:09,314 INFO L276 IsEmpty]: Start isEmpty. Operand has 5474 states, 5471 states have (on average 4.160116980442332) internal successors, (22760), 5473 states have internal predecessors, (22760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:09,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-21 01:35:09,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:09,339 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:35:09,340 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-11-21 01:35:09,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:09,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1122940364, now seen corresponding path program 1 times [2021-11-21 01:35:09,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:09,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383668886] [2021-11-21 01:35:09,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:09,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:09,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:09,998 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:09,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383668886] [2021-11-21 01:35:09,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383668886] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:09,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:10,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-21 01:35:10,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033473108] [2021-11-21 01:35:10,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:10,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:35:10,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:10,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:35:10,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:35:10,059 INFO L87 Difference]: Start difference. First operand has 5474 states, 5471 states have (on average 4.160116980442332) internal successors, (22760), 5473 states have internal predecessors, (22760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:10,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:10,466 INFO L93 Difference]: Finished difference Result 8016 states and 33516 transitions. [2021-11-21 01:35:10,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:35:10,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-21 01:35:10,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:10,633 INFO L225 Difference]: With dead ends: 8016 [2021-11-21 01:35:10,633 INFO L226 Difference]: Without dead ends: 8016 [2021-11-21 01:35:10,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:35:10,639 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 26 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:10,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 11 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:35:10,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8016 states. [2021-11-21 01:35:11,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8016 to 7449. [2021-11-21 01:35:11,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7449 states, 7449 states have (on average 4.254530809504631) internal successors, (31692), 7448 states have internal predecessors, (31692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:11,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7449 states to 7449 states and 31692 transitions. [2021-11-21 01:35:11,369 INFO L78 Accepts]: Start accepts. Automaton has 7449 states and 31692 transitions. Word has length 10 [2021-11-21 01:35:11,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:11,370 INFO L470 AbstractCegarLoop]: Abstraction has 7449 states and 31692 transitions. [2021-11-21 01:35:11,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:11,373 INFO L276 IsEmpty]: Start isEmpty. Operand 7449 states and 31692 transitions. [2021-11-21 01:35:11,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 01:35:11,383 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:11,384 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:35:11,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:35:11,388 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting disposeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-11-21 01:35:11,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:11,390 INFO L85 PathProgramCache]: Analyzing trace with hash 433967614, now seen corresponding path program 1 times [2021-11-21 01:35:11,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:11,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404498456] [2021-11-21 01:35:11,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:11,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:11,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:11,731 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:11,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404498456] [2021-11-21 01:35:11,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404498456] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:11,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:11,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:35:11,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291984784] [2021-11-21 01:35:11,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:11,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:35:11,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:11,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:35:11,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:35:11,736 INFO L87 Difference]: Start difference. First operand 7449 states and 31692 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:12,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:12,613 INFO L93 Difference]: Finished difference Result 16386 states and 69830 transitions. [2021-11-21 01:35:12,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:35:12,614 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-21 01:35:12,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:13,053 INFO L225 Difference]: With dead ends: 16386 [2021-11-21 01:35:13,053 INFO L226 Difference]: Without dead ends: 16386 [2021-11-21 01:35:13,054 INFO L932 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 [2021-11-21 01:35:13,056 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 82 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:13,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 46 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:35:13,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16386 states. [2021-11-21 01:35:13,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16386 to 10824. [2021-11-21 01:35:13,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10824 states, 10824 states have (on average 4.222376201034738) internal successors, (45703), 10823 states have internal predecessors, (45703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:14,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10824 states to 10824 states and 45703 transitions. [2021-11-21 01:35:14,109 INFO L78 Accepts]: Start accepts. Automaton has 10824 states and 45703 transitions. Word has length 11 [2021-11-21 01:35:14,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:14,110 INFO L470 AbstractCegarLoop]: Abstraction has 10824 states and 45703 transitions. [2021-11-21 01:35:14,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:14,110 INFO L276 IsEmpty]: Start isEmpty. Operand 10824 states and 45703 transitions. [2021-11-21 01:35:14,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 01:35:14,116 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:14,116 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:35:14,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:35:14,117 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-11-21 01:35:14,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:14,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1164687753, now seen corresponding path program 1 times [2021-11-21 01:35:14,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:14,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234263074] [2021-11-21 01:35:14,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:14,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:14,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:14,274 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:14,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234263074] [2021-11-21 01:35:14,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234263074] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:14,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:14,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:35:14,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907136217] [2021-11-21 01:35:14,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:14,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:35:14,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:14,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:35:14,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:35:14,280 INFO L87 Difference]: Start difference. First operand 10824 states and 45703 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:14,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:14,848 INFO L93 Difference]: Finished difference Result 19204 states and 78069 transitions. [2021-11-21 01:35:14,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:35:14,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-21 01:35:14,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:15,158 INFO L225 Difference]: With dead ends: 19204 [2021-11-21 01:35:15,158 INFO L226 Difference]: Without dead ends: 19204 [2021-11-21 01:35:15,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:35:15,160 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 23 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:15,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 24 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:35:15,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19204 states. [2021-11-21 01:35:16,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19204 to 15160. [2021-11-21 01:35:16,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15160 states, 15159 states have (on average 4.125404050399103) internal successors, (62537), 15159 states have internal predecessors, (62537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:16,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15160 states to 15160 states and 62537 transitions. [2021-11-21 01:35:16,272 INFO L78 Accepts]: Start accepts. Automaton has 15160 states and 62537 transitions. Word has length 13 [2021-11-21 01:35:16,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:16,273 INFO L470 AbstractCegarLoop]: Abstraction has 15160 states and 62537 transitions. [2021-11-21 01:35:16,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:16,273 INFO L276 IsEmpty]: Start isEmpty. Operand 15160 states and 62537 transitions. [2021-11-21 01:35:16,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-21 01:35:16,277 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:16,278 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:35:16,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:35:16,278 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-11-21 01:35:16,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:16,279 INFO L85 PathProgramCache]: Analyzing trace with hash -915632906, now seen corresponding path program 1 times [2021-11-21 01:35:16,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:16,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248476258] [2021-11-21 01:35:16,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:16,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:16,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:16,628 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:16,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248476258] [2021-11-21 01:35:16,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248476258] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:16,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:16,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:35:16,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288512998] [2021-11-21 01:35:16,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:16,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:35:16,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:16,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:35:16,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:35:16,641 INFO L87 Difference]: Start difference. First operand 15160 states and 62537 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:17,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:17,041 INFO L93 Difference]: Finished difference Result 16731 states and 67582 transitions. [2021-11-21 01:35:17,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:35:17,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-21 01:35:17,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:17,166 INFO L225 Difference]: With dead ends: 16731 [2021-11-21 01:35:17,167 INFO L226 Difference]: Without dead ends: 16731 [2021-11-21 01:35:17,167 INFO L932 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 [2021-11-21 01:35:17,168 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 93 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:17,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 23 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:35:17,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16731 states. [2021-11-21 01:35:18,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16731 to 14566. [2021-11-21 01:35:18,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14566 states, 14565 states have (on average 4.085616203226913) internal successors, (59507), 14565 states have internal predecessors, (59507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:18,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14566 states to 14566 states and 59507 transitions. [2021-11-21 01:35:18,186 INFO L78 Accepts]: Start accepts. Automaton has 14566 states and 59507 transitions. Word has length 15 [2021-11-21 01:35:18,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:18,187 INFO L470 AbstractCegarLoop]: Abstraction has 14566 states and 59507 transitions. [2021-11-21 01:35:18,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:18,188 INFO L276 IsEmpty]: Start isEmpty. Operand 14566 states and 59507 transitions. [2021-11-21 01:35:18,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-21 01:35:18,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:18,195 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:35:18,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:35:18,195 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-11-21 01:35:18,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:18,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1312971692, now seen corresponding path program 1 times [2021-11-21 01:35:18,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:18,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979820830] [2021-11-21 01:35:18,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:18,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:18,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:18,364 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:18,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979820830] [2021-11-21 01:35:18,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979820830] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:18,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:18,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:35:18,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953432259] [2021-11-21 01:35:18,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:18,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:35:18,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:18,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:35:18,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:35:18,368 INFO L87 Difference]: Start difference. First operand 14566 states and 59507 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:18,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:18,507 INFO L93 Difference]: Finished difference Result 2840 states and 9755 transitions. [2021-11-21 01:35:18,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:35:18,508 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-21 01:35:18,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:18,525 INFO L225 Difference]: With dead ends: 2840 [2021-11-21 01:35:18,525 INFO L226 Difference]: Without dead ends: 2840 [2021-11-21 01:35:18,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:35:18,527 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 33 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:18,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 17 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:35:18,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2840 states. [2021-11-21 01:35:18,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2840 to 1847. [2021-11-21 01:35:18,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1847 states, 1846 states have (on average 3.3943661971830985) internal successors, (6266), 1846 states have internal predecessors, (6266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:18,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1847 states to 1847 states and 6266 transitions. [2021-11-21 01:35:18,620 INFO L78 Accepts]: Start accepts. Automaton has 1847 states and 6266 transitions. Word has length 18 [2021-11-21 01:35:18,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:18,621 INFO L470 AbstractCegarLoop]: Abstraction has 1847 states and 6266 transitions. [2021-11-21 01:35:18,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:18,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1847 states and 6266 transitions. [2021-11-21 01:35:18,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-21 01:35:18,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:18,626 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:35:18,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:35:18,626 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting disposeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-11-21 01:35:18,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:18,627 INFO L85 PathProgramCache]: Analyzing trace with hash -275308832, now seen corresponding path program 1 times [2021-11-21 01:35:18,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:18,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261429684] [2021-11-21 01:35:18,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:18,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:18,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:18,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:18,783 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:18,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261429684] [2021-11-21 01:35:18,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261429684] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:18,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:18,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:35:18,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386658342] [2021-11-21 01:35:18,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:18,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:35:18,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:18,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:35:18,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:35:18,787 INFO L87 Difference]: Start difference. First operand 1847 states and 6266 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:18,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:18,938 INFO L93 Difference]: Finished difference Result 1481 states and 4836 transitions. [2021-11-21 01:35:18,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:35:18,939 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-21 01:35:18,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:18,949 INFO L225 Difference]: With dead ends: 1481 [2021-11-21 01:35:18,950 INFO L226 Difference]: Without dead ends: 1481 [2021-11-21 01:35:18,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:35:18,953 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 44 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:18,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 31 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:35:18,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2021-11-21 01:35:18,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1457. [2021-11-21 01:35:19,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1457 states, 1455 states have (on average 3.2776632302405497) internal successors, (4769), 1456 states have internal predecessors, (4769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:19,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 4769 transitions. [2021-11-21 01:35:19,012 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 4769 transitions. Word has length 18 [2021-11-21 01:35:19,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:19,012 INFO L470 AbstractCegarLoop]: Abstraction has 1457 states and 4769 transitions. [2021-11-21 01:35:19,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:19,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 4769 transitions. [2021-11-21 01:35:19,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-21 01:35:19,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:19,017 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:35:19,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:35:19,018 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting disposeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-11-21 01:35:19,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:19,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1261749054, now seen corresponding path program 1 times [2021-11-21 01:35:19,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:19,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056422796] [2021-11-21 01:35:19,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:19,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:19,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:19,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:19,273 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:19,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056422796] [2021-11-21 01:35:19,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056422796] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:19,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:19,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 01:35:19,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541452437] [2021-11-21 01:35:19,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:19,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 01:35:19,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:19,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 01:35:19,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:35:19,277 INFO L87 Difference]: Start difference. First operand 1457 states and 4769 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:20,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:20,370 INFO L93 Difference]: Finished difference Result 4225 states and 13505 transitions. [2021-11-21 01:35:20,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-21 01:35:20,371 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-21 01:35:20,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:20,387 INFO L225 Difference]: With dead ends: 4225 [2021-11-21 01:35:20,387 INFO L226 Difference]: Without dead ends: 4225 [2021-11-21 01:35:20,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2021-11-21 01:35:20,390 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 238 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:20,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 102 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-21 01:35:20,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4225 states. [2021-11-21 01:35:20,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4225 to 2303. [2021-11-21 01:35:20,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2303 states, 2301 states have (on average 3.254671881790526) internal successors, (7489), 2302 states have internal predecessors, (7489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:20,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 7489 transitions. [2021-11-21 01:35:20,487 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 7489 transitions. Word has length 20 [2021-11-21 01:35:20,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:20,487 INFO L470 AbstractCegarLoop]: Abstraction has 2303 states and 7489 transitions. [2021-11-21 01:35:20,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:20,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 7489 transitions. [2021-11-21 01:35:20,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-21 01:35:20,495 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:20,495 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:35:20,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:35:20,496 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-11-21 01:35:20,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:20,496 INFO L85 PathProgramCache]: Analyzing trace with hash 69375757, now seen corresponding path program 1 times [2021-11-21 01:35:20,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:20,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555794154] [2021-11-21 01:35:20,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:20,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:20,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:20,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:20,657 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:20,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555794154] [2021-11-21 01:35:20,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555794154] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:20,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:20,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:35:20,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516630901] [2021-11-21 01:35:20,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:20,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:35:20,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:20,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:35:20,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:35:20,659 INFO L87 Difference]: Start difference. First operand 2303 states and 7489 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:20,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:20,897 INFO L93 Difference]: Finished difference Result 2591 states and 8361 transitions. [2021-11-21 01:35:20,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:35:20,897 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-21 01:35:20,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:20,906 INFO L225 Difference]: With dead ends: 2591 [2021-11-21 01:35:20,906 INFO L226 Difference]: Without dead ends: 2591 [2021-11-21 01:35:20,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:35:20,908 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 55 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:20,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 15 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:35:20,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2021-11-21 01:35:20,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 2190. [2021-11-21 01:35:20,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2190 states, 2188 states have (on average 3.2376599634369287) internal successors, (7084), 2189 states have internal predecessors, (7084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:20,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2190 states to 2190 states and 7084 transitions. [2021-11-21 01:35:20,983 INFO L78 Accepts]: Start accepts. Automaton has 2190 states and 7084 transitions. Word has length 22 [2021-11-21 01:35:20,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:20,984 INFO L470 AbstractCegarLoop]: Abstraction has 2190 states and 7084 transitions. [2021-11-21 01:35:20,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:20,985 INFO L276 IsEmpty]: Start isEmpty. Operand 2190 states and 7084 transitions. [2021-11-21 01:35:20,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-21 01:35:20,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:20,991 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:35:20,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 01:35:20,991 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting disposeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-11-21 01:35:20,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:20,992 INFO L85 PathProgramCache]: Analyzing trace with hash -62786529, now seen corresponding path program 1 times [2021-11-21 01:35:20,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:20,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392522702] [2021-11-21 01:35:20,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:20,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:21,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:21,282 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:35:21,283 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:21,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392522702] [2021-11-21 01:35:21,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392522702] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:35:21,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065156305] [2021-11-21 01:35:21,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:21,284 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:35:21,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9db9bdfd-605f-4388-acfb-76375da8eed6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:35:21,289 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9db9bdfd-605f-4388-acfb-76375da8eed6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:35:21,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9db9bdfd-605f-4388-acfb-76375da8eed6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:35:21,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:21,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-21 01:35:21,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:35:21,888 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:35:21,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:35:22,350 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:35:22,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065156305] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:35:22,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [600781910] [2021-11-21 01:35:22,362 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1603) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-21 01:35:22,370 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:35:22,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2021-11-21 01:35:22,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525104952] [2021-11-21 01:35:22,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:35:22,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 01:35:22,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:22,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 01:35:22,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:35:22,374 INFO L87 Difference]: Start difference. First operand 2190 states and 7084 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:23,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:23,110 INFO L93 Difference]: Finished difference Result 2642 states and 8317 transitions. [2021-11-21 01:35:23,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-21 01:35:23,111 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-21 01:35:23,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:23,114 INFO L225 Difference]: With dead ends: 2642 [2021-11-21 01:35:23,114 INFO L226 Difference]: Without dead ends: 0 [2021-11-21 01:35:23,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 59 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2021-11-21 01:35:23,116 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 140 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:23,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 53 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 01:35:23,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-21 01:35:23,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-21 01:35:23,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:23,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-21 01:35:23,118 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2021-11-21 01:35:23,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:23,118 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-21 01:35:23,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:23,119 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-21 01:35:23,119 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-21 01:35:23,121 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2021-11-21 01:35:23,122 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (4 of 6 remaining) [2021-11-21 01:35:23,122 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (3 of 6 remaining) [2021-11-21 01:35:23,122 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (2 of 6 remaining) [2021-11-21 01:35:23,123 INFO L764 garLoopResultBuilder]: Registering result SAFE for location disposeErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2021-11-21 01:35:23,123 INFO L764 garLoopResultBuilder]: Registering result SAFE for location disposeErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-11-21 01:35:23,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9db9bdfd-605f-4388-acfb-76375da8eed6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:35:23,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9db9bdfd-605f-4388-acfb-76375da8eed6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:35:23,338 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:35:23,345 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-21 01:35:23,346 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:35:23,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:35:23 BasicIcfg [2021-11-21 01:35:23,351 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:35:23,352 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:35:23,352 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:35:23,353 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:35:23,353 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:35:02" (3/4) ... [2021-11-21 01:35:23,356 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-21 01:35:23,364 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure process [2021-11-21 01:35:23,364 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure dispose [2021-11-21 01:35:23,364 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure generate [2021-11-21 01:35:23,372 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-11-21 01:35:23,372 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-21 01:35:23,373 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-21 01:35:23,373 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-21 01:35:23,424 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9db9bdfd-605f-4388-acfb-76375da8eed6/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-21 01:35:23,425 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:35:23,425 INFO L158 Benchmark]: Toolchain (without parser) took 23032.90ms. Allocated memory was 100.7MB in the beginning and 5.4GB in the end (delta: 5.3GB). Free memory was 56.5MB in the beginning and 4.9GB in the end (delta: -4.9GB). Peak memory consumption was 398.4MB. Max. memory is 16.1GB. [2021-11-21 01:35:23,426 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 100.7MB. Free memory was 74.7MB in the beginning and 74.6MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:35:23,427 INFO L158 Benchmark]: CACSL2BoogieTranslator took 885.10ms. Allocated memory is still 100.7MB. Free memory was 56.2MB in the beginning and 55.5MB in the end (delta: 726.9kB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. [2021-11-21 01:35:23,427 INFO L158 Benchmark]: Boogie Procedure Inliner took 126.82ms. Allocated memory is still 100.7MB. Free memory was 55.5MB in the beginning and 52.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:35:23,428 INFO L158 Benchmark]: Boogie Preprocessor took 100.20ms. Allocated memory is still 100.7MB. Free memory was 52.6MB in the beginning and 50.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:35:23,428 INFO L158 Benchmark]: RCFGBuilder took 802.55ms. Allocated memory was 100.7MB in the beginning and 125.8MB in the end (delta: 25.2MB). Free memory was 50.2MB in the beginning and 92.9MB in the end (delta: -42.7MB). Peak memory consumption was 20.9MB. Max. memory is 16.1GB. [2021-11-21 01:35:23,430 INFO L158 Benchmark]: TraceAbstraction took 21036.78ms. Allocated memory was 125.8MB in the beginning and 5.4GB in the end (delta: 5.3GB). Free memory was 92.2MB in the beginning and 5.0GB in the end (delta: -4.9GB). Peak memory consumption was 406.1MB. Max. memory is 16.1GB. [2021-11-21 01:35:23,430 INFO L158 Benchmark]: Witness Printer took 72.41ms. Allocated memory is still 5.4GB. Free memory was 5.0GB in the beginning and 4.9GB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:35:23,433 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 100.7MB. Free memory was 74.7MB in the beginning and 74.6MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 885.10ms. Allocated memory is still 100.7MB. Free memory was 56.2MB in the beginning and 55.5MB in the end (delta: 726.9kB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 126.82ms. Allocated memory is still 100.7MB. Free memory was 55.5MB in the beginning and 52.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 100.20ms. Allocated memory is still 100.7MB. Free memory was 52.6MB in the beginning and 50.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 802.55ms. Allocated memory was 100.7MB in the beginning and 125.8MB in the end (delta: 25.2MB). Free memory was 50.2MB in the beginning and 92.9MB in the end (delta: -42.7MB). Peak memory consumption was 20.9MB. Max. memory is 16.1GB. * TraceAbstraction took 21036.78ms. Allocated memory was 125.8MB in the beginning and 5.4GB in the end (delta: 5.3GB). Free memory was 92.2MB in the beginning and 5.0GB in the end (delta: -4.9GB). Peak memory consumption was 406.1MB. Max. memory is 16.1GB. * Witness Printer took 72.41ms. Allocated memory is still 5.4GB. Free memory was 5.0GB in the beginning and 4.9GB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.3s, 157 PlacesBefore, 51 PlacesAfterwards, 159 TransitionsBefore, 47 TransitionsAfterwards, 9322 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 74 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 20 ConcurrentYvCompositions, 6 ChoiceCompositions, 134 TotalNumberOfCompositions, 19059 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10198, positive: 9871, positive conditional: 0, positive unconditional: 9871, negative: 327, negative conditional: 0, negative unconditional: 327, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 6164, positive: 6055, positive conditional: 0, positive unconditional: 6055, negative: 109, negative conditional: 0, negative unconditional: 109, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 6164, positive: 6003, positive conditional: 0, positive unconditional: 6003, negative: 161, negative conditional: 0, negative unconditional: 161, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 161, positive: 52, positive conditional: 0, positive unconditional: 52, negative: 109, negative conditional: 0, negative unconditional: 109, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 436, positive: 102, positive conditional: 0, positive unconditional: 102, negative: 335, negative conditional: 0, negative unconditional: 335, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 10198, positive: 3816, positive conditional: 0, positive unconditional: 3816, negative: 218, negative conditional: 0, negative unconditional: 218, unknown: 6164, unknown conditional: 0, unknown unconditional: 6164] , Statistics on independence cache: Total cache size (in pairs): 621, Positive cache size: 567, Positive conditional cache size: 0, Positive unconditional cache size: 567, Negative cache size: 54, Negative conditional cache size: 0, Negative unconditional cache size: 54 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 216 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 20.8s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 5.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.8s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 734 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 734 mSDsluCounter, 322 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1228 mSDsCounter, 84 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2145 IncrementalHoareTripleChecker+Invalid, 2229 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 84 mSolverCounterUnsat, 116 mSDtfsCounter, 2145 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 65 SyntacticMatches, 6 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15160occurred in iteration=3, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 15678 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 189 NumberOfCodeBlocks, 189 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 209 ConstructedInterpolants, 0 QuantifiedInterpolants, 1284 SizeOfPredicates, 6 NumberOfNonLiveVariables, 189 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 18/24 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-21 01:35:23,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9db9bdfd-605f-4388-acfb-76375da8eed6/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE