./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_48-pfscan_protected_loop_minimal_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ff76ec-1dc4-4377-99e2-e62c29a07581/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ff76ec-1dc4-4377-99e2-e62c29a07581/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ff76ec-1dc4-4377-99e2-e62c29a07581/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ff76ec-1dc4-4377-99e2-e62c29a07581/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_48-pfscan_protected_loop_minimal_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ff76ec-1dc4-4377-99e2-e62c29a07581/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ff76ec-1dc4-4377-99e2-e62c29a07581/bin/utaipan-SDwSMHVbGG --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 c3cd71d393166cffaa77421bc29f6d9bd09a45829052b9f9c6afdbfea26959f6 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:23:00,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:23:00,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:23:00,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:23:00,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:23:00,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:23:00,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:23:00,239 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:23:00,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:23:00,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:23:00,243 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:23:00,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:23:00,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:23:00,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:23:00,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:23:00,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:23:00,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:23:00,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:23:00,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:23:00,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:23:00,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:23:00,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:23:00,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:23:00,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:23:00,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:23:00,267 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:23:00,267 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:23:00,268 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:23:00,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:23:00,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:23:00,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:23:00,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:23:00,273 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:23:00,274 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:23:00,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:23:00,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:23:00,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:23:00,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:23:00,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:23:00,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:23:00,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:23:00,280 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ff76ec-1dc4-4377-99e2-e62c29a07581/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:23:00,305 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:23:00,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:23:00,309 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:23:00,310 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:23:00,310 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:23:00,310 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:23:00,311 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:23:00,311 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:23:00,312 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:23:00,315 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:23:00,315 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:23:00,315 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:23:00,316 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:23:00,316 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:23:00,316 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:23:00,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:23:00,317 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:23:00,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:23:00,319 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:23:00,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:23:00,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:23:00,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:23:00,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:23:00,320 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:23:00,321 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:23:00,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:23:00,321 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:23:00,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:23:00,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:23:00,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:23:00,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:23:00,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:23:00,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:23:00,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:23:00,325 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:23:00,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:23:00,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:23:00,326 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:23:00,326 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:23:00,326 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_c9ff76ec-1dc4-4377-99e2-e62c29a07581/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ff76ec-1dc4-4377-99e2-e62c29a07581/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3cd71d393166cffaa77421bc29f6d9bd09a45829052b9f9c6afdbfea26959f6 [2021-10-29 05:23:00,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:23:00,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:23:00,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:23:00,698 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:23:00,699 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:23:00,700 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ff76ec-1dc4-4377-99e2-e62c29a07581/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/goblint-regression/13-privatized_48-pfscan_protected_loop_minimal_true.i [2021-10-29 05:23:00,765 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ff76ec-1dc4-4377-99e2-e62c29a07581/bin/utaipan-SDwSMHVbGG/data/7c278b880/0f5ff8610ea1445898533cb9a0cd43b3/FLAGa69927bd8 [2021-10-29 05:23:01,358 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:23:01,359 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ff76ec-1dc4-4377-99e2-e62c29a07581/sv-benchmarks/c/goblint-regression/13-privatized_48-pfscan_protected_loop_minimal_true.i [2021-10-29 05:23:01,371 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ff76ec-1dc4-4377-99e2-e62c29a07581/bin/utaipan-SDwSMHVbGG/data/7c278b880/0f5ff8610ea1445898533cb9a0cd43b3/FLAGa69927bd8 [2021-10-29 05:23:01,617 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ff76ec-1dc4-4377-99e2-e62c29a07581/bin/utaipan-SDwSMHVbGG/data/7c278b880/0f5ff8610ea1445898533cb9a0cd43b3 [2021-10-29 05:23:01,619 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:23:01,621 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:23:01,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:23:01,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:23:01,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:23:01,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:23:01" (1/1) ... [2021-10-29 05:23:01,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50fb72f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:01, skipping insertion in model container [2021-10-29 05:23:01,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:23:01" (1/1) ... [2021-10-29 05:23:01,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:23:01,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:23:01,876 WARN L228 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_c9ff76ec-1dc4-4377-99e2-e62c29a07581/sv-benchmarks/c/goblint-regression/13-privatized_48-pfscan_protected_loop_minimal_true.i[844,857] [2021-10-29 05:23:02,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:23:02,070 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:23:02,084 WARN L228 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_c9ff76ec-1dc4-4377-99e2-e62c29a07581/sv-benchmarks/c/goblint-regression/13-privatized_48-pfscan_protected_loop_minimal_true.i[844,857] [2021-10-29 05:23:02,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:23:02,199 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:23:02,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:02 WrapperNode [2021-10-29 05:23:02,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:23:02,201 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:23:02,201 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:23:02,201 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:23:02,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:02" (1/1) ... [2021-10-29 05:23:02,244 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:02" (1/1) ... [2021-10-29 05:23:02,282 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:23:02,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:23:02,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:23:02,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:23:02,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:02" (1/1) ... [2021-10-29 05:23:02,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:02" (1/1) ... [2021-10-29 05:23:02,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:02" (1/1) ... [2021-10-29 05:23:02,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:02" (1/1) ... [2021-10-29 05:23:02,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:02" (1/1) ... [2021-10-29 05:23:02,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:02" (1/1) ... [2021-10-29 05:23:02,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:02" (1/1) ... [2021-10-29 05:23:02,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:23:02,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:23:02,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:23:02,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:23:02,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:02" (1/1) ... [2021-10-29 05:23:02,354 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:23:02,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ff76ec-1dc4-4377-99e2-e62c29a07581/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:23:02,382 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ff76ec-1dc4-4377-99e2-e62c29a07581/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:23:02,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ff76ec-1dc4-4377-99e2-e62c29a07581/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:23:02,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-29 05:23:02,434 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2021-10-29 05:23:02,436 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2021-10-29 05:23:02,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-29 05:23:02,436 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-10-29 05:23:02,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:23:02,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 05:23:02,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:23:02,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:23:02,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:23:02,439 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-29 05:23:02,859 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:23:02,872 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-29 05:23:02,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:23:02 BoogieIcfgContainer [2021-10-29 05:23:02,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:23:02,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:23:02,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:23:02,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:23:02,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:23:01" (1/3) ... [2021-10-29 05:23:02,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@707598e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:23:02, skipping insertion in model container [2021-10-29 05:23:02,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:23:02" (2/3) ... [2021-10-29 05:23:02,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@707598e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:23:02, skipping insertion in model container [2021-10-29 05:23:02,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:23:02" (3/3) ... [2021-10-29 05:23:02,883 INFO L111 eAbstractionObserver]: Analyzing ICFG 13-privatized_48-pfscan_protected_loop_minimal_true.i [2021-10-29 05:23:02,895 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-29 05:23:02,895 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:23:02,895 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:23:02,895 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-29 05:23:02,943 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,943 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,944 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,944 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,944 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,945 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,945 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,945 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,946 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,947 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,947 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,947 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,948 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#in~qp.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,949 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#in~qp.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,949 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#in~qp.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,950 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#in~qp.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,950 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,950 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,951 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,951 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,951 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,951 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,952 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,952 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,953 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,953 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~got~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,954 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,954 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,954 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,955 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,955 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,955 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,956 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,956 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,956 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~got~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,956 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,956 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#in~qp.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,957 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#in~qp.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,957 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,957 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,957 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#in~qp.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,958 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#in~qp.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,958 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,958 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,958 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~got~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,959 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~got~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,959 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,959 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,959 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,961 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,962 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,962 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,963 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,963 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,963 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,963 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,964 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,964 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,965 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,965 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,967 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,968 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,969 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,969 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,970 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,970 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,970 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,970 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,971 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,971 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,972 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,973 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,973 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,973 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,974 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,974 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,974 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,974 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,975 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,975 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,975 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,975 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,976 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,977 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,979 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,980 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,980 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,981 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,986 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,987 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,987 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,987 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,988 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,992 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,994 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,994 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,994 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,996 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,996 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,996 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,996 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,997 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,997 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,998 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,998 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,998 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,998 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,999 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,999 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,999 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,999 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:02,999 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,000 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,000 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,001 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,002 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,002 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,002 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,002 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~got~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,003 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,003 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~got~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,003 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,003 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,003 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,004 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,004 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,004 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,004 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,004 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,005 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,005 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,005 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,005 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,005 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,006 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,006 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,006 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,006 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,006 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,007 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,007 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~got~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,007 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~got~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,007 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,008 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,008 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,008 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,012 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,013 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,013 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,013 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,013 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~qp.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,014 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,014 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_pqueue_get_~got~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,015 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,015 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,015 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,015 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,017 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#in~qp.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,017 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,017 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,018 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,018 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,018 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#in~qp.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,018 WARN L313 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,018 WARN L313 ript$VariableManager]: TermVariabe workerThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:23:03,027 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-29 05:23:03,081 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:23:03,088 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 [2021-10-29 05:23:03,089 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-29 05:23:03,119 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-29 05:23:03,131 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 108 places, 112 transitions, 229 flow [2021-10-29 05:23:03,135 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 108 places, 112 transitions, 229 flow [2021-10-29 05:23:03,136 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 108 places, 112 transitions, 229 flow [2021-10-29 05:23:03,225 INFO L129 PetriNetUnfolder]: 8/111 cut-off events. [2021-10-29 05:23:03,226 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-29 05:23:03,231 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 111 events. 8/111 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 139 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2021-10-29 05:23:03,237 INFO L116 LiptonReduction]: Number of co-enabled transitions 2760 [2021-10-29 05:23:08,396 INFO L131 LiptonReduction]: Checked pairs total: 3069 [2021-10-29 05:23:08,396 INFO L133 LiptonReduction]: Total number of compositions: 103 [2021-10-29 05:23:08,406 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 23 transitions, 51 flow [2021-10-29 05:23:08,419 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 62 states, 61 states have (on average 2.2950819672131146) internal successors, (140), 61 states have internal predecessors, (140), 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) [2021-10-29 05:23:08,421 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 61 states have (on average 2.2950819672131146) internal successors, (140), 61 states have internal predecessors, (140), 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) [2021-10-29 05:23:08,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:23:08,427 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:23:08,427 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:23:08,428 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:23:08,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:23:08,433 INFO L85 PathProgramCache]: Analyzing trace with hash 120958473, now seen corresponding path program 1 times [2021-10-29 05:23:08,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:23:08,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37332765] [2021-10-29 05:23:08,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:23:08,443 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:23:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:23:08,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:23:08,608 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:23:08,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37332765] [2021-10-29 05:23:08,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37332765] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:23:08,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:23:08,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:23:08,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652109238] [2021-10-29 05:23:08,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 05:23:08,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:23:08,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 05:23:08,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:23:08,631 INFO L87 Difference]: Start difference. First operand has 62 states, 61 states have (on average 2.2950819672131146) internal successors, (140), 61 states have internal predecessors, (140), 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-10-29 05:23:08,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:23:08,645 INFO L93 Difference]: Finished difference Result 62 states and 134 transitions. [2021-10-29 05:23:08,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 05:23:08,646 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2021-10-29 05:23:08,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:23:08,655 INFO L225 Difference]: With dead ends: 62 [2021-10-29 05:23:08,656 INFO L226 Difference]: Without dead ends: 62 [2021-10-29 05:23:08,657 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:23:08,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-29 05:23:08,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-10-29 05:23:08,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 2.19672131147541) internal successors, (134), 61 states have internal predecessors, (134), 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) [2021-10-29 05:23:08,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 134 transitions. [2021-10-29 05:23:08,692 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 134 transitions. Word has length 6 [2021-10-29 05:23:08,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:23:08,693 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 134 transitions. [2021-10-29 05:23:08,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-10-29 05:23:08,693 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 134 transitions. [2021-10-29 05:23:08,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 05:23:08,694 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:23:08,694 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:23:08,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:23:08,695 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:23:08,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:23:08,696 INFO L85 PathProgramCache]: Analyzing trace with hash -545274764, now seen corresponding path program 1 times [2021-10-29 05:23:08,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:23:08,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659818009] [2021-10-29 05:23:08,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:23:08,697 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:23:08,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:23:08,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:23:08,805 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:23:08,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659818009] [2021-10-29 05:23:08,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659818009] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:23:08,806 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:23:08,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:23:08,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530595201] [2021-10-29 05:23:08,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:23:08,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:23:08,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:23:08,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:23:08,808 INFO L87 Difference]: Start difference. First operand 62 states and 134 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-10-29 05:23:08,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:23:08,915 INFO L93 Difference]: Finished difference Result 120 states and 266 transitions. [2021-10-29 05:23:08,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:23:08,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2021-10-29 05:23:08,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:23:08,923 INFO L225 Difference]: With dead ends: 120 [2021-10-29 05:23:08,923 INFO L226 Difference]: Without dead ends: 103 [2021-10-29 05:23:08,924 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:23:08,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-29 05:23:08,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 62. [2021-10-29 05:23:08,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 2.2131147540983607) internal successors, (135), 61 states have internal predecessors, (135), 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) [2021-10-29 05:23:08,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 135 transitions. [2021-10-29 05:23:08,949 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 135 transitions. Word has length 7 [2021-10-29 05:23:08,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:23:08,950 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 135 transitions. [2021-10-29 05:23:08,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-10-29 05:23:08,950 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 135 transitions. [2021-10-29 05:23:08,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 05:23:08,951 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:23:08,952 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:23:08,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 05:23:08,952 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:23:08,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:23:08,953 INFO L85 PathProgramCache]: Analyzing trace with hash -231757622, now seen corresponding path program 1 times [2021-10-29 05:23:08,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:23:08,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514578137] [2021-10-29 05:23:08,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:23:08,954 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:23:09,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:23:09,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:23:09,132 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:23:09,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514578137] [2021-10-29 05:23:09,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514578137] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:23:09,133 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:23:09,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-29 05:23:09,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389111584] [2021-10-29 05:23:09,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 05:23:09,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:23:09,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 05:23:09,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:23:09,135 INFO L87 Difference]: Start difference. First operand 62 states and 135 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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) [2021-10-29 05:23:09,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:23:09,586 INFO L93 Difference]: Finished difference Result 170 states and 380 transitions. [2021-10-29 05:23:09,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-29 05:23:09,586 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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 [2021-10-29 05:23:09,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:23:09,588 INFO L225 Difference]: With dead ends: 170 [2021-10-29 05:23:09,588 INFO L226 Difference]: Without dead ends: 166 [2021-10-29 05:23:09,589 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2021-10-29 05:23:09,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-10-29 05:23:09,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 79. [2021-10-29 05:23:09,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 2.230769230769231) internal successors, (174), 78 states have internal predecessors, (174), 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) [2021-10-29 05:23:09,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 174 transitions. [2021-10-29 05:23:09,598 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 174 transitions. Word has length 11 [2021-10-29 05:23:09,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:23:09,599 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 174 transitions. [2021-10-29 05:23:09,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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) [2021-10-29 05:23:09,599 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 174 transitions. [2021-10-29 05:23:09,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 05:23:09,600 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:23:09,600 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:23:09,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 05:23:09,601 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:23:09,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:23:09,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1108837378, now seen corresponding path program 2 times [2021-10-29 05:23:09,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:23:09,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216798181] [2021-10-29 05:23:09,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:23:09,602 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:23:09,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:23:09,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:23:09,797 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:23:09,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216798181] [2021-10-29 05:23:09,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216798181] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:23:09,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:23:09,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-29 05:23:09,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047403151] [2021-10-29 05:23:09,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 05:23:09,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:23:09,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 05:23:09,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:23:09,802 INFO L87 Difference]: Start difference. First operand 79 states and 174 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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) [2021-10-29 05:23:10,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:23:10,136 INFO L93 Difference]: Finished difference Result 266 states and 579 transitions. [2021-10-29 05:23:10,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-29 05:23:10,137 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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 [2021-10-29 05:23:10,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:23:10,139 INFO L225 Difference]: With dead ends: 266 [2021-10-29 05:23:10,140 INFO L226 Difference]: Without dead ends: 263 [2021-10-29 05:23:10,140 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-10-29 05:23:10,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-10-29 05:23:10,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 131. [2021-10-29 05:23:10,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 2.269230769230769) internal successors, (295), 130 states have internal predecessors, (295), 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) [2021-10-29 05:23:10,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 295 transitions. [2021-10-29 05:23:10,163 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 295 transitions. Word has length 11 [2021-10-29 05:23:10,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:23:10,163 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 295 transitions. [2021-10-29 05:23:10,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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) [2021-10-29 05:23:10,163 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 295 transitions. [2021-10-29 05:23:10,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 05:23:10,165 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:23:10,165 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:23:10,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-29 05:23:10,165 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:23:10,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:23:10,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1098112618, now seen corresponding path program 3 times [2021-10-29 05:23:10,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:23:10,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401262859] [2021-10-29 05:23:10,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:23:10,166 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:23:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:23:10,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:23:10,334 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:23:10,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401262859] [2021-10-29 05:23:10,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401262859] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:23:10,335 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:23:10,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-29 05:23:10,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701096381] [2021-10-29 05:23:10,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 05:23:10,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:23:10,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 05:23:10,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:23:10,336 INFO L87 Difference]: Start difference. First operand 131 states and 295 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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) [2021-10-29 05:23:10,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:23:10,827 INFO L93 Difference]: Finished difference Result 361 states and 787 transitions. [2021-10-29 05:23:10,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-29 05:23:10,828 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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 [2021-10-29 05:23:10,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:23:10,831 INFO L225 Difference]: With dead ends: 361 [2021-10-29 05:23:10,831 INFO L226 Difference]: Without dead ends: 357 [2021-10-29 05:23:10,832 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=382, Unknown=0, NotChecked=0, Total=552 [2021-10-29 05:23:10,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-10-29 05:23:10,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 131. [2021-10-29 05:23:10,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 2.269230769230769) internal successors, (295), 130 states have internal predecessors, (295), 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) [2021-10-29 05:23:10,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 295 transitions. [2021-10-29 05:23:10,845 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 295 transitions. Word has length 11 [2021-10-29 05:23:10,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:23:10,845 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 295 transitions. [2021-10-29 05:23:10,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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) [2021-10-29 05:23:10,846 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 295 transitions. [2021-10-29 05:23:10,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 05:23:10,847 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:23:10,847 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:23:10,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-29 05:23:10,848 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:23:10,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:23:10,848 INFO L85 PathProgramCache]: Analyzing trace with hash -95732184, now seen corresponding path program 4 times [2021-10-29 05:23:10,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:23:10,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853242064] [2021-10-29 05:23:10,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:23:10,849 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:23:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:23:10,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:23:10,964 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:23:10,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853242064] [2021-10-29 05:23:10,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853242064] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:23:10,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:23:10,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-29 05:23:10,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176957469] [2021-10-29 05:23:10,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 05:23:10,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:23:10,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 05:23:10,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:23:10,966 INFO L87 Difference]: Start difference. First operand 131 states and 295 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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) [2021-10-29 05:23:11,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:23:11,320 INFO L93 Difference]: Finished difference Result 398 states and 869 transitions. [2021-10-29 05:23:11,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-29 05:23:11,321 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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 [2021-10-29 05:23:11,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:23:11,324 INFO L225 Difference]: With dead ends: 398 [2021-10-29 05:23:11,324 INFO L226 Difference]: Without dead ends: 395 [2021-10-29 05:23:11,325 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-10-29 05:23:11,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-10-29 05:23:11,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 131. [2021-10-29 05:23:11,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 2.269230769230769) internal successors, (295), 130 states have internal predecessors, (295), 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) [2021-10-29 05:23:11,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 295 transitions. [2021-10-29 05:23:11,336 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 295 transitions. Word has length 11 [2021-10-29 05:23:11,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:23:11,336 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 295 transitions. [2021-10-29 05:23:11,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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) [2021-10-29 05:23:11,337 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 295 transitions. [2021-10-29 05:23:11,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 05:23:11,338 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:23:11,338 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:23:11,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-29 05:23:11,339 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:23:11,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:23:11,339 INFO L85 PathProgramCache]: Analyzing trace with hash -106456944, now seen corresponding path program 5 times [2021-10-29 05:23:11,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:23:11,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424965421] [2021-10-29 05:23:11,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:23:11,340 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:23:11,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:23:11,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:23:11,438 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:23:11,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424965421] [2021-10-29 05:23:11,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424965421] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:23:11,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:23:11,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-29 05:23:11,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654474837] [2021-10-29 05:23:11,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 05:23:11,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:23:11,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 05:23:11,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:23:11,440 INFO L87 Difference]: Start difference. First operand 131 states and 295 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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) [2021-10-29 05:23:11,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:23:11,859 INFO L93 Difference]: Finished difference Result 393 states and 883 transitions. [2021-10-29 05:23:11,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-29 05:23:11,860 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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 [2021-10-29 05:23:11,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:23:11,863 INFO L225 Difference]: With dead ends: 393 [2021-10-29 05:23:11,863 INFO L226 Difference]: Without dead ends: 389 [2021-10-29 05:23:11,864 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2021-10-29 05:23:11,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-10-29 05:23:11,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 111. [2021-10-29 05:23:11,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 2.1545454545454548) internal successors, (237), 110 states have internal predecessors, (237), 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) [2021-10-29 05:23:11,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 237 transitions. [2021-10-29 05:23:11,873 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 237 transitions. Word has length 11 [2021-10-29 05:23:11,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:23:11,873 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 237 transitions. [2021-10-29 05:23:11,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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) [2021-10-29 05:23:11,873 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 237 transitions. [2021-10-29 05:23:11,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 05:23:11,875 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:23:11,875 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:23:11,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-29 05:23:11,875 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:23:11,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:23:11,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1314779904, now seen corresponding path program 6 times [2021-10-29 05:23:11,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:23:11,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169789805] [2021-10-29 05:23:11,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:23:11,877 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:23:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:23:11,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:23:11,991 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:23:11,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169789805] [2021-10-29 05:23:11,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169789805] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:23:11,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:23:11,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-29 05:23:11,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757486645] [2021-10-29 05:23:11,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 05:23:11,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:23:11,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 05:23:11,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:23:11,992 INFO L87 Difference]: Start difference. First operand 111 states and 237 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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) [2021-10-29 05:23:12,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:23:12,240 INFO L93 Difference]: Finished difference Result 259 states and 543 transitions. [2021-10-29 05:23:12,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-29 05:23:12,240 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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 [2021-10-29 05:23:12,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:23:12,244 INFO L225 Difference]: With dead ends: 259 [2021-10-29 05:23:12,244 INFO L226 Difference]: Without dead ends: 256 [2021-10-29 05:23:12,245 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-10-29 05:23:12,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-10-29 05:23:12,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 101. [2021-10-29 05:23:12,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 2.14) internal successors, (214), 100 states have internal predecessors, (214), 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) [2021-10-29 05:23:12,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 214 transitions. [2021-10-29 05:23:12,252 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 214 transitions. Word has length 11 [2021-10-29 05:23:12,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:23:12,253 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 214 transitions. [2021-10-29 05:23:12,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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) [2021-10-29 05:23:12,253 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 214 transitions. [2021-10-29 05:23:12,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-29 05:23:12,258 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:23:12,258 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:23:12,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-29 05:23:12,263 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:23:12,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:23:12,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1074467698, now seen corresponding path program 1 times [2021-10-29 05:23:12,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:23:12,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788862026] [2021-10-29 05:23:12,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:23:12,264 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:23:12,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:23:12,528 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:23:12,528 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:23:12,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788862026] [2021-10-29 05:23:12,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788862026] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:23:12,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974854977] [2021-10-29 05:23:12,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:23:12,531 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:23:12,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ff76ec-1dc4-4377-99e2-e62c29a07581/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:23:12,536 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ff76ec-1dc4-4377-99e2-e62c29a07581/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:23:12,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ff76ec-1dc4-4377-99e2-e62c29a07581/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 05:23:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:23:12,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-29 05:23:12,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:23:12,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-10-29 05:23:13,179 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:23:13,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 28 [2021-10-29 05:23:13,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-10-29 05:23:13,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:23:13,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:23:17,034 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-10-29 05:23:17,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 1 [2021-10-29 05:23:17,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:23:17,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974854977] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-29 05:23:17,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-29 05:23:17,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11, 10] total 28 [2021-10-29 05:23:17,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890340540] [2021-10-29 05:23:17,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-29 05:23:17,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:23:17,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-29 05:23:17,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=665, Unknown=1, NotChecked=0, Total=812 [2021-10-29 05:23:17,048 INFO L87 Difference]: Start difference. First operand 101 states and 214 transitions. Second operand has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 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) [2021-10-29 05:23:52,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:23:52,964 INFO L93 Difference]: Finished difference Result 351 states and 738 transitions. [2021-10-29 05:23:52,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-29 05:23:52,965 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 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 [2021-10-29 05:23:52,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:23:52,968 INFO L225 Difference]: With dead ends: 351 [2021-10-29 05:23:52,968 INFO L226 Difference]: Without dead ends: 348 [2021-10-29 05:23:52,969 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 627 ImplicationChecksByTransitivity, 23.9s TimeCoverageRelationStatistics Valid=380, Invalid=1681, Unknown=9, NotChecked=0, Total=2070 [2021-10-29 05:23:52,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-10-29 05:23:52,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 113. [2021-10-29 05:23:52,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 2.169642857142857) internal successors, (243), 112 states have internal predecessors, (243), 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) [2021-10-29 05:23:52,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 243 transitions. [2021-10-29 05:23:52,977 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 243 transitions. Word has length 15 [2021-10-29 05:23:52,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:23:52,977 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 243 transitions. [2021-10-29 05:23:52,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 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) [2021-10-29 05:23:52,978 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 243 transitions. [2021-10-29 05:23:52,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-29 05:23:52,979 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:23:52,979 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:23:53,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ff76ec-1dc4-4377-99e2-e62c29a07581/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-29 05:23:53,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ff76ec-1dc4-4377-99e2-e62c29a07581/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:23:53,205 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:23:53,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:23:53,205 INFO L85 PathProgramCache]: Analyzing trace with hash -984464193, now seen corresponding path program 1 times [2021-10-29 05:23:53,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:23:53,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191202666] [2021-10-29 05:23:53,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:23:53,206 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:23:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:23:53,586 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:23:53,586 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:23:53,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191202666] [2021-10-29 05:23:53,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191202666] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:23:53,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131002532] [2021-10-29 05:23:53,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:23:53,587 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:23:53,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ff76ec-1dc4-4377-99e2-e62c29a07581/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:23:53,593 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ff76ec-1dc4-4377-99e2-e62c29a07581/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:23:53,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ff76ec-1dc4-4377-99e2-e62c29a07581/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-29 05:23:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:23:53,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-29 05:23:53,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:23:54,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-10-29 05:23:54,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-29 05:23:54,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-29 05:23:54,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-10-29 05:23:54,538 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:23:54,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:23:54,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2021-10-29 05:23:55,208 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-10-29 05:23:55,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 1 [2021-10-29 05:23:55,219 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:23:55,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131002532] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:23:55,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1616961905] [2021-10-29 05:23:55,229 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:609) 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) [2021-10-29 05:23:55,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 05:23:55,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 30 [2021-10-29 05:23:55,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173064095] [2021-10-29 05:23:55,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-29 05:23:55,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:23:55,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-29 05:23:55,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=790, Unknown=0, NotChecked=0, Total=930 [2021-10-29 05:23:55,243 INFO L87 Difference]: Start difference. First operand 113 states and 243 transitions. Second operand has 31 states, 30 states have (on average 2.066666666666667) internal successors, (62), 31 states have internal predecessors, (62), 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) [2021-10-29 05:24:01,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:24:01,713 INFO L93 Difference]: Finished difference Result 871 states and 1835 transitions. [2021-10-29 05:24:01,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-10-29 05:24:01,714 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.066666666666667) internal successors, (62), 31 states have internal predecessors, (62), 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 [2021-10-29 05:24:01,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:24:01,719 INFO L225 Difference]: With dead ends: 871 [2021-10-29 05:24:01,719 INFO L226 Difference]: Without dead ends: 863 [2021-10-29 05:24:01,724 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3878 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2336, Invalid=9874, Unknown=0, NotChecked=0, Total=12210 [2021-10-29 05:24:01,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2021-10-29 05:24:01,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 168. [2021-10-29 05:24:01,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 2.18562874251497) internal successors, (365), 167 states have internal predecessors, (365), 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) [2021-10-29 05:24:01,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 365 transitions. [2021-10-29 05:24:01,739 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 365 transitions. Word has length 22 [2021-10-29 05:24:01,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:24:01,740 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 365 transitions. [2021-10-29 05:24:01,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.066666666666667) internal successors, (62), 31 states have internal predecessors, (62), 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) [2021-10-29 05:24:01,740 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 365 transitions. [2021-10-29 05:24:01,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-29 05:24:01,741 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:24:01,741 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-29 05:24:01,772 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ff76ec-1dc4-4377-99e2-e62c29a07581/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-29 05:24:01,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ff76ec-1dc4-4377-99e2-e62c29a07581/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:24:01,957 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:24:01,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:24:01,957 INFO L85 PathProgramCache]: Analyzing trace with hash 722160804, now seen corresponding path program 2 times [2021-10-29 05:24:01,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:24:01,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964056723] [2021-10-29 05:24:01,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:24:01,958 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:24:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:24:02,634 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-29 05:24:02,634 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:24:02,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964056723] [2021-10-29 05:24:02,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964056723] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:24:02,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267815853] [2021-10-29 05:24:02,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 05:24:02,635 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:24:02,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ff76ec-1dc4-4377-99e2-e62c29a07581/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:24:02,645 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ff76ec-1dc4-4377-99e2-e62c29a07581/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:24:02,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ff76ec-1dc4-4377-99e2-e62c29a07581/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-29 05:24:02,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-29 05:24:02,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 05:24:02,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-29 05:24:02,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:24:03,198 INFO L354 Elim1Store]: treesize reduction 18, result has 60.9 percent of original size [2021-10-29 05:24:03,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 43 [2021-10-29 05:24:03,439 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:24:03,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 28 [2021-10-29 05:24:03,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-10-29 05:24:03,538 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-29 05:24:03,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:24:08,180 INFO L354 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2021-10-29 05:24:08,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 115 treesize of output 1 [2021-10-29 05:24:08,217 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-29 05:24:08,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267815853] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-29 05:24:08,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-29 05:24:08,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15, 8] total 29 [2021-10-29 05:24:08,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765765114] [2021-10-29 05:24:08,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-29 05:24:08,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:24:08,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-29 05:24:08,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=716, Unknown=2, NotChecked=0, Total=870 [2021-10-29 05:24:08,219 INFO L87 Difference]: Start difference. First operand 168 states and 365 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 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) [2021-10-29 05:24:09,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:24:09,181 INFO L93 Difference]: Finished difference Result 222 states and 477 transitions. [2021-10-29 05:24:09,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-29 05:24:09,181 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 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 29 [2021-10-29 05:24:09,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:24:09,182 INFO L225 Difference]: With dead ends: 222 [2021-10-29 05:24:09,182 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 05:24:09,183 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=251, Invalid=1229, Unknown=2, NotChecked=0, Total=1482 [2021-10-29 05:24:09,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 05:24:09,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 05:24:09,183 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) [2021-10-29 05:24:09,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 05:24:09,184 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2021-10-29 05:24:09,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:24:09,184 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 05:24:09,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 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) [2021-10-29 05:24:09,184 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 05:24:09,184 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 05:24:09,187 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-29 05:24:09,187 INFO L764 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:24:09,187 INFO L764 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:24:09,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ff76ec-1dc4-4377-99e2-e62c29a07581/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:24:09,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ff76ec-1dc4-4377-99e2-e62c29a07581/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-29 05:24:09,402 INFO L731 BasicCegarLoop]: Path program histogram: [6, 2, 1, 1, 1] [2021-10-29 05:24:09,405 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-29 05:24:09,405 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:24:09,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:24:09 BasicIcfg [2021-10-29 05:24:09,406 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:24:09,407 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:24:09,407 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:24:09,407 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:24:09,407 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:23:02" (3/4) ... [2021-10-29 05:24:09,409 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 05:24:09,414 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure worker [2021-10-29 05:24:09,420 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-29 05:24:09,421 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-29 05:24:09,421 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-29 05:24:09,421 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:24:09,452 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ff76ec-1dc4-4377-99e2-e62c29a07581/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:24:09,452 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:24:09,453 INFO L168 Benchmark]: Toolchain (without parser) took 67832.41 ms. Allocated memory was 83.9 MB in the beginning and 155.2 MB in the end (delta: 71.3 MB). Free memory was 43.9 MB in the beginning and 98.3 MB in the end (delta: -54.4 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. [2021-10-29 05:24:09,454 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 83.9 MB. Free memory is still 61.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:24:09,454 INFO L168 Benchmark]: CACSL2BoogieTranslator took 578.04 ms. Allocated memory was 83.9 MB in the beginning and 125.8 MB in the end (delta: 41.9 MB). Free memory was 43.7 MB in the beginning and 92.9 MB in the end (delta: -49.3 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.1 GB. [2021-10-29 05:24:09,455 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.49 ms. Allocated memory is still 125.8 MB. Free memory was 92.9 MB in the beginning and 90.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:24:09,455 INFO L168 Benchmark]: Boogie Preprocessor took 61.10 ms. Allocated memory is still 125.8 MB. Free memory was 90.7 MB in the beginning and 89.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:24:09,455 INFO L168 Benchmark]: RCFGBuilder took 529.98 ms. Allocated memory is still 125.8 MB. Free memory was 89.2 MB in the beginning and 75.0 MB in the end (delta: 14.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-29 05:24:09,456 INFO L168 Benchmark]: TraceAbstraction took 66529.82 ms. Allocated memory was 125.8 MB in the beginning and 155.2 MB in the end (delta: 29.4 MB). Free memory was 74.5 MB in the beginning and 101.0 MB in the end (delta: -26.4 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2021-10-29 05:24:09,456 INFO L168 Benchmark]: Witness Printer took 45.87 ms. Allocated memory is still 155.2 MB. Free memory was 101.0 MB in the beginning and 98.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:24:09,458 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 83.9 MB. Free memory is still 61.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 578.04 ms. Allocated memory was 83.9 MB in the beginning and 125.8 MB in the end (delta: 41.9 MB). Free memory was 43.7 MB in the beginning and 92.9 MB in the end (delta: -49.3 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 81.49 ms. Allocated memory is still 125.8 MB. Free memory was 92.9 MB in the beginning and 90.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 61.10 ms. Allocated memory is still 125.8 MB. Free memory was 90.7 MB in the beginning and 89.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 529.98 ms. Allocated memory is still 125.8 MB. Free memory was 89.2 MB in the beginning and 75.0 MB in the end (delta: 14.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 66529.82 ms. Allocated memory was 125.8 MB in the beginning and 155.2 MB in the end (delta: 29.4 MB). Free memory was 74.5 MB in the beginning and 101.0 MB in the end (delta: -26.4 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Witness Printer took 45.87 ms. Allocated memory is still 155.2 MB. Free memory was 101.0 MB in the beginning and 98.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.2s, 108 PlacesBefore, 22 PlacesAfterwards, 112 TransitionsBefore, 23 TransitionsAfterwards, 2760 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 3 ChoiceCompositions, 103 TotalNumberOfCompositions, 3069 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2295, positive: 2200, positive conditional: 0, positive unconditional: 2200, negative: 95, negative conditional: 0, negative unconditional: 95, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1899, positive: 1860, positive conditional: 0, positive unconditional: 1860, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1899, positive: 1851, positive conditional: 0, positive unconditional: 1851, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 48, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 162, positive: 32, positive conditional: 0, positive unconditional: 32, negative: 130, negative conditional: 0, negative unconditional: 130, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2295, positive: 340, positive conditional: 0, positive unconditional: 340, negative: 56, negative conditional: 0, negative unconditional: 56, unknown: 1899, unknown conditional: 0, unknown unconditional: 1899] , Statistics on independence cache: Total cache size (in pairs): 62, Positive cache size: 49, Positive conditional cache size: 0, Positive unconditional cache size: 49, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13 - 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: 13]: 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 3 procedures, 147 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 66.3s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 45.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.3s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 228 SDtfs, 1206 SDslu, 600 SDs, 0 SdLazy, 3627 SolverSat, 391 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 18.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 443 GetRequests, 135 SyntacticMatches, 5 SemanticMatches, 303 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5346 ImplicationChecksByTransitivity, 35.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=168occurred in iteration=10, InterpolantAutomatonStates: 228, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 2113 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 13.3s InterpolantComputationTime, 211 NumberOfCodeBlocks, 195 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 260 ConstructedInterpolants, 18 QuantifiedInterpolants, 2540 SizeOfPredicates, 67 NumberOfNonLiveVariables, 492 ConjunctsInSsa, 114 ConjunctsInUnsatCore, 17 InterpolantComputations, 10 PerfectInterpolantSequences, 52/84 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-29 05:24:09,563 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ff76ec-1dc4-4377-99e2-e62c29a07581/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...