./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-lit/fkp2014.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-lit/fkp2014.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7 --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 f24d9db33c7d5aecb89ac12017849974773f5d17a3292112bf25190c4dfae9f0 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:39:23,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:39:23,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:39:23,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:39:23,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:39:23,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:39:23,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:39:23,293 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:39:23,295 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:39:23,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:39:23,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:39:23,298 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:39:23,299 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:39:23,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:39:23,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:39:23,303 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:39:23,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:39:23,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:39:23,306 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:39:23,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:39:23,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:39:23,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:39:23,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:39:23,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:39:23,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:39:23,318 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:39:23,318 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:39:23,319 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:39:23,320 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:39:23,321 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:39:23,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:39:23,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:39:23,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:39:23,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:39:23,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:39:23,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:39:23,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:39:23,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:39:23,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:39:23,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:39:23,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:39:23,333 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 20:39:23,374 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:39:23,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:39:23,375 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:39:23,375 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:39:23,376 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:39:23,376 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:39:23,376 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:39:23,376 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:39:23,377 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:39:23,377 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:39:23,378 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:39:23,378 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:39:23,378 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:39:23,378 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:39:23,379 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:39:23,379 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:39:23,379 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:39:23,379 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:39:23,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:39:23,381 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 20:39:23,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:39:23,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 20:39:23,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:39:23,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:39:23,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:39:23,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:39:23,383 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 20:39:23,384 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:39:23,384 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:39:23,384 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:39:23,384 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:39:23,385 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:39:23,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:39:23,385 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:39:23,385 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:39:23,385 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:39:23,386 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:39:23,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:39:23,386 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:39:23,386 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:39:23,387 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:39:23,387 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_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f24d9db33c7d5aecb89ac12017849974773f5d17a3292112bf25190c4dfae9f0 [2021-11-25 20:39:23,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:39:23,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:39:23,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:39:23,668 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:39:23,669 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:39:23,670 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/pthread-lit/fkp2014.i [2021-11-25 20:39:23,734 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/data/803b6035e/20e15c82d1014d2da7bd3c8d7df174d7/FLAG62f437abc [2021-11-25 20:39:24,364 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:39:24,367 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/sv-benchmarks/c/pthread-lit/fkp2014.i [2021-11-25 20:39:24,390 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/data/803b6035e/20e15c82d1014d2da7bd3c8d7df174d7/FLAG62f437abc [2021-11-25 20:39:24,634 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/data/803b6035e/20e15c82d1014d2da7bd3c8d7df174d7 [2021-11-25 20:39:24,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:39:24,636 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:39:24,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:39:24,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:39:24,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:39:24,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:39:24" (1/1) ... [2021-11-25 20:39:24,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5339daca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:39:24, skipping insertion in model container [2021-11-25 20:39:24,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:39:24" (1/1) ... [2021-11-25 20:39:24,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:39:24,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:39:25,047 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/sv-benchmarks/c/pthread-lit/fkp2014.i[30003,30016] [2021-11-25 20:39:25,067 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:39:25,076 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:39:25,135 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/sv-benchmarks/c/pthread-lit/fkp2014.i[30003,30016] [2021-11-25 20:39:25,146 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:39:25,183 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:39:25,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:39:25 WrapperNode [2021-11-25 20:39:25,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:39:25,184 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:39:25,184 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:39:25,184 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:39:25,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:39:25" (1/1) ... [2021-11-25 20:39:25,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:39:25" (1/1) ... [2021-11-25 20:39:25,225 INFO L137 Inliner]: procedures = 173, calls = 19, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 64 [2021-11-25 20:39:25,225 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:39:25,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:39:25,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:39:25,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:39:25,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:39:25" (1/1) ... [2021-11-25 20:39:25,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:39:25" (1/1) ... [2021-11-25 20:39:25,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:39:25" (1/1) ... [2021-11-25 20:39:25,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:39:25" (1/1) ... [2021-11-25 20:39:25,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:39:25" (1/1) ... [2021-11-25 20:39:25,246 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:39:25" (1/1) ... [2021-11-25 20:39:25,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:39:25" (1/1) ... [2021-11-25 20:39:25,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:39:25,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:39:25,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:39:25,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:39:25,257 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:39:25" (1/1) ... [2021-11-25 20:39:25,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:39:25,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:39:25,290 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:39:25,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:39:25,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 20:39:25,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-25 20:39:25,354 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2021-11-25 20:39:25,354 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2021-11-25 20:39:25,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:39:25,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:39:25,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:39:25,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:39:25,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-25 20:39:25,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:39:25,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:39:25,356 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-25 20:39:25,504 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:39:25,506 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:39:25,703 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:39:25,743 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:39:25,744 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 20:39:25,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:39:25 BoogieIcfgContainer [2021-11-25 20:39:25,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:39:25,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:39:25,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:39:25,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:39:25,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:39:24" (1/3) ... [2021-11-25 20:39:25,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336c3b75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:39:25, skipping insertion in model container [2021-11-25 20:39:25,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:39:25" (2/3) ... [2021-11-25 20:39:25,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336c3b75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:39:25, skipping insertion in model container [2021-11-25 20:39:25,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:39:25" (3/3) ... [2021-11-25 20:39:25,770 INFO L111 eAbstractionObserver]: Analyzing ICFG fkp2014.i [2021-11-25 20:39:25,775 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-25 20:39:25,776 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:39:25,776 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 20:39:25,776 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-25 20:39:25,799 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,800 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,800 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,800 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,801 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,801 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,801 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,801 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,802 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,802 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,802 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,802 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,803 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,803 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,803 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,804 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,804 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,804 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,804 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,804 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,805 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,805 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,805 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,805 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,806 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,806 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,806 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,807 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,807 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,807 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,807 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,808 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,811 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,811 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,811 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,812 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,812 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,812 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,812 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,812 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:25,814 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-25 20:39:25,873 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:39:25,880 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 20:39:25,880 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 20:39:25,893 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-25 20:39:25,921 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 70 transitions, 145 flow [2021-11-25 20:39:25,932 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 70 transitions, 145 flow [2021-11-25 20:39:25,935 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 70 places, 70 transitions, 145 flow [2021-11-25 20:39:26,004 INFO L129 PetriNetUnfolder]: 4/82 cut-off events. [2021-11-25 20:39:26,004 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-25 20:39:26,008 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 82 events. 4/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 86 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 42. Up to 4 conditions per place. [2021-11-25 20:39:26,011 INFO L116 LiptonReduction]: Number of co-enabled transitions 756 [2021-11-25 20:39:27,953 INFO L131 LiptonReduction]: Checked pairs total: 633 [2021-11-25 20:39:27,953 INFO L133 LiptonReduction]: Total number of compositions: 74 [2021-11-25 20:39:27,967 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 11 places, 8 transitions, 21 flow [2021-11-25 20:39:27,989 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 17 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:27,994 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:27,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 20:39:27,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:39:28,000 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 20:39:28,003 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:39:28,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:39:28,010 INFO L85 PathProgramCache]: Analyzing trace with hash 8983841, now seen corresponding path program 1 times [2021-11-25 20:39:28,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:39:28,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607774992] [2021-11-25 20:39:28,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:28,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:39:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:39:28,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:39:28,305 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:39:28,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607774992] [2021-11-25 20:39:28,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607774992] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:39:28,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:39:28,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 20:39:28,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439253469] [2021-11-25 20:39:28,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:39:28,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:39:28,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:39:28,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:39:28,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:39:28,348 INFO L87 Difference]: Start difference. First operand has 17 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:28,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:39:28,374 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2021-11-25 20:39:28,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:39:28,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2021-11-25 20:39:28,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:39:28,389 INFO L225 Difference]: With dead ends: 12 [2021-11-25 20:39:28,389 INFO L226 Difference]: Without dead ends: 11 [2021-11-25 20:39:28,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:39:28,395 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:39:28,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 1 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:39:28,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-25 20:39:28,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-25 20:39:28,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:28,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2021-11-25 20:39:28,426 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 4 [2021-11-25 20:39:28,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:39:28,427 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2021-11-25 20:39:28,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:28,428 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2021-11-25 20:39:28,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 20:39:28,428 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:39:28,428 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2021-11-25 20:39:28,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:39:28,429 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:39:28,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:39:28,432 INFO L85 PathProgramCache]: Analyzing trace with hash 43537140, now seen corresponding path program 1 times [2021-11-25 20:39:28,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:39:28,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941245533] [2021-11-25 20:39:28,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:28,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:39:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 20:39:28,487 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 20:39:28,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 20:39:28,548 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 20:39:28,549 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 20:39:28,550 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 3 remaining) [2021-11-25 20:39:28,555 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2021-11-25 20:39:28,556 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2021-11-25 20:39:28,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 20:39:28,558 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-25 20:39:28,562 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-11-25 20:39:28,562 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-11-25 20:39:28,579 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,580 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,580 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,580 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,580 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,581 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,581 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,581 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,581 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,582 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,582 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,583 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,583 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,583 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,583 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,583 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,584 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,584 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,584 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,584 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,584 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,585 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,585 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,585 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,585 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,585 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,586 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,586 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,586 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,586 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,586 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,586 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,587 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,588 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,588 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,588 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,588 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,588 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,588 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,589 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,589 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,589 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,589 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,590 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,590 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,591 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,591 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,591 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,591 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,591 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,592 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,592 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,592 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,592 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,592 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,592 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,593 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,594 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,594 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,594 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,594 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,594 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,595 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,595 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,595 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,595 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,596 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,596 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,596 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,596 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,596 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,597 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,597 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,598 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,598 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,598 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,598 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,598 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,599 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,599 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:28,600 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-25 20:39:28,614 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:39:28,615 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 20:39:28,616 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-25 20:39:28,618 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-25 20:39:28,619 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 92 transitions, 196 flow [2021-11-25 20:39:28,619 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 92 transitions, 196 flow [2021-11-25 20:39:28,620 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 93 places, 92 transitions, 196 flow [2021-11-25 20:39:28,662 INFO L129 PetriNetUnfolder]: 6/121 cut-off events. [2021-11-25 20:39:28,663 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-25 20:39:28,669 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 121 events. 6/121 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 182 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 83. Up to 6 conditions per place. [2021-11-25 20:39:28,672 INFO L116 LiptonReduction]: Number of co-enabled transitions 2436 [2021-11-25 20:39:30,432 INFO L131 LiptonReduction]: Checked pairs total: 3089 [2021-11-25 20:39:30,432 INFO L133 LiptonReduction]: Total number of compositions: 94 [2021-11-25 20:39:30,434 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 18 transitions, 48 flow [2021-11-25 20:39:30,446 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 175 states, 165 states have (on average 2.824242424242424) internal successors, (466), 174 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:30,448 INFO L276 IsEmpty]: Start isEmpty. Operand has 175 states, 165 states have (on average 2.824242424242424) internal successors, (466), 174 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:30,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 20:39:30,448 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:39:30,449 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 20:39:30,449 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:39:30,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:39:30,450 INFO L85 PathProgramCache]: Analyzing trace with hash 478821305, now seen corresponding path program 1 times [2021-11-25 20:39:30,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:39:30,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131950155] [2021-11-25 20:39:30,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:30,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:39:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:39:30,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:39:30,502 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:39:30,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131950155] [2021-11-25 20:39:30,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131950155] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:39:30,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:39:30,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 20:39:30,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481031401] [2021-11-25 20:39:30,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:39:30,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:39:30,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:39:30,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:39:30,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:39:30,505 INFO L87 Difference]: Start difference. First operand has 175 states, 165 states have (on average 2.824242424242424) internal successors, (466), 174 states have internal predecessors, (466), 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 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:30,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:39:30,569 INFO L93 Difference]: Finished difference Result 128 states and 276 transitions. [2021-11-25 20:39:30,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:39:30,569 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-11-25 20:39:30,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:39:30,573 INFO L225 Difference]: With dead ends: 128 [2021-11-25 20:39:30,573 INFO L226 Difference]: Without dead ends: 123 [2021-11-25 20:39:30,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:39:30,574 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 13 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:39:30,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 8 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:39:30,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-25 20:39:30,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-11-25 20:39:30,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 118 states have (on average 2.2457627118644066) internal successors, (265), 122 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:30,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 265 transitions. [2021-11-25 20:39:30,595 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 265 transitions. Word has length 5 [2021-11-25 20:39:30,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:39:30,595 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 265 transitions. [2021-11-25 20:39:30,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:30,596 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 265 transitions. [2021-11-25 20:39:30,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 20:39:30,597 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:39:30,597 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2021-11-25 20:39:30,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 20:39:30,598 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:39:30,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:39:30,598 INFO L85 PathProgramCache]: Analyzing trace with hash -2125893654, now seen corresponding path program 1 times [2021-11-25 20:39:30,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:39:30,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520752156] [2021-11-25 20:39:30,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:30,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:39:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 20:39:30,624 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 20:39:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 20:39:30,657 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 20:39:30,659 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 20:39:30,660 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 4 remaining) [2021-11-25 20:39:30,661 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2021-11-25 20:39:30,661 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2021-11-25 20:39:30,661 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2021-11-25 20:39:30,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 20:39:30,662 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-25 20:39:30,662 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2021-11-25 20:39:30,662 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2021-11-25 20:39:30,673 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,674 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,674 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,674 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,674 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,674 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,674 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,675 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,675 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,675 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,675 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,675 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,676 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,676 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,676 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,676 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,676 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,676 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,677 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,677 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,677 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,677 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,677 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,678 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,678 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,678 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,678 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,678 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,679 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,679 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,679 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,679 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,679 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,680 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,680 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,680 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,680 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,680 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,680 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,681 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,681 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,681 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,681 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,681 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,681 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,682 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,682 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,682 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,682 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,682 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,683 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,683 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,683 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,683 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,683 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,683 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,684 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,684 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,684 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,684 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,684 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,685 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,685 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,685 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,686 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,686 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,686 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,686 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,686 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,687 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,687 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,687 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,687 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,687 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,687 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,688 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,688 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,688 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,688 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,688 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,689 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,689 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,689 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,689 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,689 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,689 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,690 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,690 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,690 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,690 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,690 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,691 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,691 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,691 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,691 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,691 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,692 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,692 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,692 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,692 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,692 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,693 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,693 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,693 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,693 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,694 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,694 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,694 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,694 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,694 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,694 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,695 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,695 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,695 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,695 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,696 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,696 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,696 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,696 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,696 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:30,697 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-25 20:39:30,698 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:39:30,701 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 20:39:30,701 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-25 20:39:30,707 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-25 20:39:30,707 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 116 places, 114 transitions, 249 flow [2021-11-25 20:39:30,708 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 116 places, 114 transitions, 249 flow [2021-11-25 20:39:30,708 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 116 places, 114 transitions, 249 flow [2021-11-25 20:39:30,743 INFO L129 PetriNetUnfolder]: 8/160 cut-off events. [2021-11-25 20:39:30,743 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-11-25 20:39:30,745 INFO L84 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 160 events. 8/160 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 306 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 125. Up to 8 conditions per place. [2021-11-25 20:39:30,752 INFO L116 LiptonReduction]: Number of co-enabled transitions 5040 [2021-11-25 20:39:32,612 INFO L131 LiptonReduction]: Checked pairs total: 7076 [2021-11-25 20:39:32,612 INFO L133 LiptonReduction]: Total number of compositions: 122 [2021-11-25 20:39:32,613 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 28 places, 23 transitions, 67 flow [2021-11-25 20:39:32,644 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 889 states, 870 states have (on average 3.5229885057471266) internal successors, (3065), 888 states have internal predecessors, (3065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:32,647 INFO L276 IsEmpty]: Start isEmpty. Operand has 889 states, 870 states have (on average 3.5229885057471266) internal successors, (3065), 888 states have internal predecessors, (3065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:32,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 20:39:32,648 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:39:32,648 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 20:39:32,648 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:39:32,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:39:32,649 INFO L85 PathProgramCache]: Analyzing trace with hash 724169869, now seen corresponding path program 1 times [2021-11-25 20:39:32,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:39:32,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965732774] [2021-11-25 20:39:32,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:32,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:39:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:39:32,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:39:32,691 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:39:32,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965732774] [2021-11-25 20:39:32,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965732774] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:39:32,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:39:32,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 20:39:32,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090243582] [2021-11-25 20:39:32,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:39:32,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:39:32,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:39:32,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:39:32,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:39:32,697 INFO L87 Difference]: Start difference. First operand has 889 states, 870 states have (on average 3.5229885057471266) internal successors, (3065), 888 states have internal predecessors, (3065), 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 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:32,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:39:32,791 INFO L93 Difference]: Finished difference Result 627 states and 1784 transitions. [2021-11-25 20:39:32,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:39:32,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-11-25 20:39:32,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:39:32,802 INFO L225 Difference]: With dead ends: 627 [2021-11-25 20:39:32,802 INFO L226 Difference]: Without dead ends: 625 [2021-11-25 20:39:32,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:39:32,804 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 16 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:39:32,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 8 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:39:32,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2021-11-25 20:39:32,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 625. [2021-11-25 20:39:32,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 610 states have (on average 2.919672131147541) internal successors, (1781), 624 states have internal predecessors, (1781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:32,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1781 transitions. [2021-11-25 20:39:32,881 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1781 transitions. Word has length 5 [2021-11-25 20:39:32,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:39:32,882 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 1781 transitions. [2021-11-25 20:39:32,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:32,882 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1781 transitions. [2021-11-25 20:39:32,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-25 20:39:32,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:39:32,883 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:39:32,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 20:39:32,884 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:39:32,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:39:32,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1764531765, now seen corresponding path program 1 times [2021-11-25 20:39:32,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:39:32,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757982059] [2021-11-25 20:39:32,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:32,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:39:32,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:39:32,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:39:32,953 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:39:32,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757982059] [2021-11-25 20:39:32,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757982059] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:39:32,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23166507] [2021-11-25 20:39:32,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:32,953 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:39:32,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:39:32,955 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:39:32,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:39:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:39:33,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 20:39:33,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:39:33,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:39:33,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:39:33,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 20:39:33,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23166507] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 20:39:33,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 20:39:33,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4] total 8 [2021-11-25 20:39:33,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478085569] [2021-11-25 20:39:33,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:39:33,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:39:33,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:39:33,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:39:33,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-25 20:39:33,272 INFO L87 Difference]: Start difference. First operand 625 states and 1781 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:33,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:39:33,357 INFO L93 Difference]: Finished difference Result 967 states and 2528 transitions. [2021-11-25 20:39:33,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:39:33,358 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-25 20:39:33,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:39:33,376 INFO L225 Difference]: With dead ends: 967 [2021-11-25 20:39:33,376 INFO L226 Difference]: Without dead ends: 957 [2021-11-25 20:39:33,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-25 20:39:33,378 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 16 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:39:33,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 8 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:39:33,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2021-11-25 20:39:33,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 835. [2021-11-25 20:39:33,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 820 states have (on average 2.7756097560975608) internal successors, (2276), 834 states have internal predecessors, (2276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:33,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 2276 transitions. [2021-11-25 20:39:33,433 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 2276 transitions. Word has length 12 [2021-11-25 20:39:33,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:39:33,433 INFO L470 AbstractCegarLoop]: Abstraction has 835 states and 2276 transitions. [2021-11-25 20:39:33,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:33,434 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 2276 transitions. [2021-11-25 20:39:33,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-25 20:39:33,436 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:39:33,436 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:39:33,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 20:39:33,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:39:33,660 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:39:33,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:39:33,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1471803849, now seen corresponding path program 2 times [2021-11-25 20:39:33,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:39:33,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318783930] [2021-11-25 20:39:33,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:33,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:39:33,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:39:33,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:39:33,720 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:39:33,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318783930] [2021-11-25 20:39:33,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318783930] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:39:33,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546670288] [2021-11-25 20:39:33,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:39:33,721 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:39:33,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:39:33,724 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:39:33,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 20:39:33,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-25 20:39:33,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:39:33,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 20:39:33,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:39:33,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:39:33,892 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:39:33,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546670288] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:39:33,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:39:33,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2021-11-25 20:39:33,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867860950] [2021-11-25 20:39:33,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:39:33,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:39:33,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:39:33,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:39:33,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-25 20:39:33,895 INFO L87 Difference]: Start difference. First operand 835 states and 2276 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:34,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:39:34,010 INFO L93 Difference]: Finished difference Result 776 states and 2134 transitions. [2021-11-25 20:39:34,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:39:34,011 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2021-11-25 20:39:34,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:39:34,018 INFO L225 Difference]: With dead ends: 776 [2021-11-25 20:39:34,018 INFO L226 Difference]: Without dead ends: 766 [2021-11-25 20:39:34,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-25 20:39:34,019 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 32 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:39:34,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 22 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:39:34,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2021-11-25 20:39:34,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 555. [2021-11-25 20:39:34,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 548 states have (on average 2.821167883211679) internal successors, (1546), 554 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:34,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 1546 transitions. [2021-11-25 20:39:34,042 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 1546 transitions. Word has length 12 [2021-11-25 20:39:34,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:39:34,042 INFO L470 AbstractCegarLoop]: Abstraction has 555 states and 1546 transitions. [2021-11-25 20:39:34,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:34,043 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 1546 transitions. [2021-11-25 20:39:34,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 20:39:34,045 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:39:34,045 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2021-11-25 20:39:34,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 20:39:34,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:39:34,268 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:39:34,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:39:34,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1418804923, now seen corresponding path program 1 times [2021-11-25 20:39:34,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:39:34,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444223418] [2021-11-25 20:39:34,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:34,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:39:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 20:39:34,299 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 20:39:34,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 20:39:34,345 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 20:39:34,345 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 20:39:34,345 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (4 of 5 remaining) [2021-11-25 20:39:34,346 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2021-11-25 20:39:34,346 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2021-11-25 20:39:34,346 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2021-11-25 20:39:34,346 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2021-11-25 20:39:34,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 20:39:34,347 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2021-11-25 20:39:34,347 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2021-11-25 20:39:34,347 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2021-11-25 20:39:34,358 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,358 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,358 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,358 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,359 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,359 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,359 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,359 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,359 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,359 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,360 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,360 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,360 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,360 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,360 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,360 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,361 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,361 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,361 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,361 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,361 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,361 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,362 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,362 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,362 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,362 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,362 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,362 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,363 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,363 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,363 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,363 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,363 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,364 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,364 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,364 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,364 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,364 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,364 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,364 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,365 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,365 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,365 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,365 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,366 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,366 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,366 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,366 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,366 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,366 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,367 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,367 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,367 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,367 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,367 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,367 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,368 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,368 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,368 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,368 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,368 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,368 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,368 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,369 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,369 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,369 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,369 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,369 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,370 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,370 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,370 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,370 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,370 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,370 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,370 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,371 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,371 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,371 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,371 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,372 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,372 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,372 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,372 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,372 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,372 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,372 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,373 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,373 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,373 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,373 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,373 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,373 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,374 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,374 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,374 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,374 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,374 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,374 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,375 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,375 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,375 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,375 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,375 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,375 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,376 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,376 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,376 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,376 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,376 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,376 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,377 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,377 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,377 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,377 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,377 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,377 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,377 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,378 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,378 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,378 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,378 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,378 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,378 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,379 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,379 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,379 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,379 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,379 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,380 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,380 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,380 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,380 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,380 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,381 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,381 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,381 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,381 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,382 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,382 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,382 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,382 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,382 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,382 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,383 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,383 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,383 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,383 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,384 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,384 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,384 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,384 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,384 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,385 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,385 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,385 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,385 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,385 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,385 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,386 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,386 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:34,386 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-25 20:39:34,387 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:39:34,388 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 20:39:34,388 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-25 20:39:34,389 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-25 20:39:34,390 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 136 transitions, 304 flow [2021-11-25 20:39:34,390 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 139 places, 136 transitions, 304 flow [2021-11-25 20:39:34,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 139 places, 136 transitions, 304 flow [2021-11-25 20:39:34,421 INFO L129 PetriNetUnfolder]: 10/199 cut-off events. [2021-11-25 20:39:34,421 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-11-25 20:39:34,425 INFO L84 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 199 events. 10/199 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 407 event pairs, 0 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 168. Up to 10 conditions per place. [2021-11-25 20:39:34,435 INFO L116 LiptonReduction]: Number of co-enabled transitions 8568 [2021-11-25 20:39:36,541 INFO L131 LiptonReduction]: Checked pairs total: 12228 [2021-11-25 20:39:36,542 INFO L133 LiptonReduction]: Total number of compositions: 148 [2021-11-25 20:39:36,542 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 30 transitions, 92 flow [2021-11-25 20:39:36,767 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 4510 states, 4466 states have (on average 4.690550828481863) internal successors, (20948), 4509 states have internal predecessors, (20948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:36,793 INFO L276 IsEmpty]: Start isEmpty. Operand has 4510 states, 4466 states have (on average 4.690550828481863) internal successors, (20948), 4509 states have internal predecessors, (20948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:36,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 20:39:36,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:39:36,801 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 20:39:36,802 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:39:36,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:39:36,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1015982113, now seen corresponding path program 1 times [2021-11-25 20:39:36,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:39:36,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472104534] [2021-11-25 20:39:36,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:36,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:39:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:39:36,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:39:36,856 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:39:36,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472104534] [2021-11-25 20:39:36,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472104534] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:39:36,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:39:36,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 20:39:36,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005077023] [2021-11-25 20:39:36,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:39:36,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:39:36,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:39:36,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:39:36,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:39:36,871 INFO L87 Difference]: Start difference. First operand has 4510 states, 4466 states have (on average 4.690550828481863) internal successors, (20948), 4509 states have internal predecessors, (20948), 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 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:37,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:39:37,019 INFO L93 Difference]: Finished difference Result 3235 states and 11621 transitions. [2021-11-25 20:39:37,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:39:37,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-11-25 20:39:37,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:39:37,054 INFO L225 Difference]: With dead ends: 3235 [2021-11-25 20:39:37,054 INFO L226 Difference]: Without dead ends: 3221 [2021-11-25 20:39:37,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:39:37,056 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 19 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:39:37,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 8 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:39:37,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3221 states. [2021-11-25 20:39:37,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3221 to 3221. [2021-11-25 20:39:37,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3221 states, 3184 states have (on average 3.6312814070351758) internal successors, (11562), 3220 states have internal predecessors, (11562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:37,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3221 states to 3221 states and 11562 transitions. [2021-11-25 20:39:37,195 INFO L78 Accepts]: Start accepts. Automaton has 3221 states and 11562 transitions. Word has length 5 [2021-11-25 20:39:37,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:39:37,196 INFO L470 AbstractCegarLoop]: Abstraction has 3221 states and 11562 transitions. [2021-11-25 20:39:37,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:37,196 INFO L276 IsEmpty]: Start isEmpty. Operand 3221 states and 11562 transitions. [2021-11-25 20:39:37,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-25 20:39:37,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:39:37,197 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:39:37,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 20:39:37,198 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:39:37,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:39:37,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1217930855, now seen corresponding path program 1 times [2021-11-25 20:39:37,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:39:37,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578016627] [2021-11-25 20:39:37,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:37,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:39:37,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:39:37,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 20:39:37,248 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:39:37,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578016627] [2021-11-25 20:39:37,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578016627] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:39:37,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:39:37,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:39:37,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727033990] [2021-11-25 20:39:37,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:39:37,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:39:37,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:39:37,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:39:37,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:39:37,251 INFO L87 Difference]: Start difference. First operand 3221 states and 11562 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:37,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:39:37,505 INFO L93 Difference]: Finished difference Result 5985 states and 19387 transitions. [2021-11-25 20:39:37,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:39:37,505 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 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 12 [2021-11-25 20:39:37,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:39:37,565 INFO L225 Difference]: With dead ends: 5985 [2021-11-25 20:39:37,565 INFO L226 Difference]: Without dead ends: 5967 [2021-11-25 20:39:37,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:39:37,566 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 48 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:39:37,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 14 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:39:37,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5967 states. [2021-11-25 20:39:37,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5967 to 5278. [2021-11-25 20:39:37,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 5241 states have (on average 3.368631940469376) internal successors, (17655), 5277 states have internal predecessors, (17655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:37,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 17655 transitions. [2021-11-25 20:39:37,888 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 17655 transitions. Word has length 12 [2021-11-25 20:39:37,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:39:37,888 INFO L470 AbstractCegarLoop]: Abstraction has 5278 states and 17655 transitions. [2021-11-25 20:39:37,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:37,889 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 17655 transitions. [2021-11-25 20:39:37,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-25 20:39:37,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:39:37,889 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:39:37,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 20:39:37,890 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:39:37,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:39:37,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1217936435, now seen corresponding path program 2 times [2021-11-25 20:39:37,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:39:37,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287124660] [2021-11-25 20:39:37,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:37,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:39:37,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:39:37,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 20:39:37,940 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:39:37,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287124660] [2021-11-25 20:39:37,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287124660] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:39:37,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:39:37,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:39:37,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847739260] [2021-11-25 20:39:37,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:39:37,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:39:37,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:39:37,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:39:37,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:39:37,942 INFO L87 Difference]: Start difference. First operand 5278 states and 17655 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:38,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:39:38,105 INFO L93 Difference]: Finished difference Result 3973 states and 13244 transitions. [2021-11-25 20:39:38,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:39:38,105 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 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 12 [2021-11-25 20:39:38,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:39:38,156 INFO L225 Difference]: With dead ends: 3973 [2021-11-25 20:39:38,156 INFO L226 Difference]: Without dead ends: 3963 [2021-11-25 20:39:38,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:39:38,158 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 36 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:39:38,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 18 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:39:38,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3963 states. [2021-11-25 20:39:38,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3963 to 3336. [2021-11-25 20:39:38,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3336 states, 3312 states have (on average 3.364130434782609) internal successors, (11142), 3335 states have internal predecessors, (11142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:38,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3336 states to 3336 states and 11142 transitions. [2021-11-25 20:39:38,362 INFO L78 Accepts]: Start accepts. Automaton has 3336 states and 11142 transitions. Word has length 12 [2021-11-25 20:39:38,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:39:38,363 INFO L470 AbstractCegarLoop]: Abstraction has 3336 states and 11142 transitions. [2021-11-25 20:39:38,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:38,363 INFO L276 IsEmpty]: Start isEmpty. Operand 3336 states and 11142 transitions. [2021-11-25 20:39:38,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-25 20:39:38,365 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:39:38,365 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:39:38,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 20:39:38,366 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:39:38,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:39:38,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1932715511, now seen corresponding path program 1 times [2021-11-25 20:39:38,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:39:38,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38231806] [2021-11-25 20:39:38,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:38,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:39:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:39:38,457 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 20:39:38,457 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:39:38,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38231806] [2021-11-25 20:39:38,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38231806] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:39:38,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3209833] [2021-11-25 20:39:38,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:38,458 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:39:38,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:39:38,460 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:39:38,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 20:39:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:39:38,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 20:39:38,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:39:38,722 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 20:39:38,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:39:38,784 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 20:39:38,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3209833] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 20:39:38,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 20:39:38,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 6] total 11 [2021-11-25 20:39:38,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608511853] [2021-11-25 20:39:38,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:39:38,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:39:38,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:39:38,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:39:38,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:39:38,787 INFO L87 Difference]: Start difference. First operand 3336 states and 11142 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:39,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:39:39,006 INFO L93 Difference]: Finished difference Result 4677 states and 14958 transitions. [2021-11-25 20:39:39,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:39:39,007 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 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 19 [2021-11-25 20:39:39,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:39:39,030 INFO L225 Difference]: With dead ends: 4677 [2021-11-25 20:39:39,031 INFO L226 Difference]: Without dead ends: 4529 [2021-11-25 20:39:39,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:39:39,033 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 31 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:39:39,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 14 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:39:39,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4529 states. [2021-11-25 20:39:39,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4529 to 3144. [2021-11-25 20:39:39,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3144 states, 3120 states have (on average 3.4166666666666665) internal successors, (10660), 3143 states have internal predecessors, (10660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:39,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3144 states to 3144 states and 10660 transitions. [2021-11-25 20:39:39,186 INFO L78 Accepts]: Start accepts. Automaton has 3144 states and 10660 transitions. Word has length 19 [2021-11-25 20:39:39,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:39:39,187 INFO L470 AbstractCegarLoop]: Abstraction has 3144 states and 10660 transitions. [2021-11-25 20:39:39,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:39,187 INFO L276 IsEmpty]: Start isEmpty. Operand 3144 states and 10660 transitions. [2021-11-25 20:39:39,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-25 20:39:39,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:39:39,190 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:39:39,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 20:39:39,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-25 20:39:39,397 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:39:39,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:39:39,397 INFO L85 PathProgramCache]: Analyzing trace with hash -781045715, now seen corresponding path program 2 times [2021-11-25 20:39:39,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:39:39,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589836192] [2021-11-25 20:39:39,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:39,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:39:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:39:39,548 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 20:39:39,549 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:39:39,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589836192] [2021-11-25 20:39:39,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589836192] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:39:39,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789504229] [2021-11-25 20:39:39,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:39:39,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:39:39,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:39:39,551 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:39:39,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 20:39:39,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-25 20:39:39,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:39:39,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 20:39:39,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:39:39,796 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 20:39:39,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:39:39,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789504229] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:39:39,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:39:39,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 12 [2021-11-25 20:39:39,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206953923] [2021-11-25 20:39:39,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:39:39,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:39:39,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:39:39,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:39:39,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-25 20:39:39,800 INFO L87 Difference]: Start difference. First operand 3144 states and 10660 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:40,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:39:40,048 INFO L93 Difference]: Finished difference Result 3229 states and 11138 transitions. [2021-11-25 20:39:40,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 20:39:40,048 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-25 20:39:40,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:39:40,064 INFO L225 Difference]: With dead ends: 3229 [2021-11-25 20:39:40,064 INFO L226 Difference]: Without dead ends: 3191 [2021-11-25 20:39:40,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-25 20:39:40,065 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 55 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:39:40,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 38 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:39:40,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3191 states. [2021-11-25 20:39:40,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3191 to 2491. [2021-11-25 20:39:40,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2491 states, 2482 states have (on average 3.524576954069299) internal successors, (8748), 2490 states have internal predecessors, (8748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:40,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2491 states to 2491 states and 8748 transitions. [2021-11-25 20:39:40,187 INFO L78 Accepts]: Start accepts. Automaton has 2491 states and 8748 transitions. Word has length 19 [2021-11-25 20:39:40,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:39:40,188 INFO L470 AbstractCegarLoop]: Abstraction has 2491 states and 8748 transitions. [2021-11-25 20:39:40,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:40,189 INFO L276 IsEmpty]: Start isEmpty. Operand 2491 states and 8748 transitions. [2021-11-25 20:39:40,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-25 20:39:40,191 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:39:40,191 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2021-11-25 20:39:40,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 20:39:40,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:39:40,406 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:39:40,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:39:40,406 INFO L85 PathProgramCache]: Analyzing trace with hash -376917563, now seen corresponding path program 1 times [2021-11-25 20:39:40,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:39:40,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899688272] [2021-11-25 20:39:40,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:40,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:39:40,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 20:39:40,439 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 20:39:40,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 20:39:40,463 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 20:39:40,468 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 20:39:40,469 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (5 of 6 remaining) [2021-11-25 20:39:40,469 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2021-11-25 20:39:40,469 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2021-11-25 20:39:40,469 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2021-11-25 20:39:40,470 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2021-11-25 20:39:40,470 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-11-25 20:39:40,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 20:39:40,471 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2021-11-25 20:39:40,471 WARN L234 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2021-11-25 20:39:40,471 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2021-11-25 20:39:40,484 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,484 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,484 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,485 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,485 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,485 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,485 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,485 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,485 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,485 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,486 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,486 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,486 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,486 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,486 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,486 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,487 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,487 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,487 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,487 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,487 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,487 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,487 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,488 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,488 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,488 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,488 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,488 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,488 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,489 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,489 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,489 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,490 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,490 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,490 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,490 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,491 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,491 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,491 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,491 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,491 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,491 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,491 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,492 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,492 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,492 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,492 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,492 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,492 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,493 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,493 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,493 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,493 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,493 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,493 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,493 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,494 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,494 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,494 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,494 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,494 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,494 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,495 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,495 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,496 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,496 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,496 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,496 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,496 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,497 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,497 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,497 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,497 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,497 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,497 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,498 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,498 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,498 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,498 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,498 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,498 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,498 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,499 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,499 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,499 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,499 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,499 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,499 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,500 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,500 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,500 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,500 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,500 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,500 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,500 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,501 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,501 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,501 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,501 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,501 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,502 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,502 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,502 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,502 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,502 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,502 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,502 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,503 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,503 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,503 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,503 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,503 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,503 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,504 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,504 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,504 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,504 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,504 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,504 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,504 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,505 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,505 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,505 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,505 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,505 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,505 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,506 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,506 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,506 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,506 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,506 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,506 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,507 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,507 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,507 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,507 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,507 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,507 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,507 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,508 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,508 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,508 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,508 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,508 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,508 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,509 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,509 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,509 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,509 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,509 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,509 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,509 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,510 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,510 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,510 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,510 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,510 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,510 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,511 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,511 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,511 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,511 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,512 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,512 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,512 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,512 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,512 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,512 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,513 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,513 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,513 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,513 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,513 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,514 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,514 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,514 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,514 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,514 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,515 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,515 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,515 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,515 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,515 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,515 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,516 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,517 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,517 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,517 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,517 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,517 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,517 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,518 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,518 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,518 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,518 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,518 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,519 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,519 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,519 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,519 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:40,519 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-25 20:39:40,521 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:39:40,521 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 20:39:40,521 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-25 20:39:40,523 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-25 20:39:40,523 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 158 transitions, 361 flow [2021-11-25 20:39:40,523 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 158 transitions, 361 flow [2021-11-25 20:39:40,523 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 162 places, 158 transitions, 361 flow [2021-11-25 20:39:40,590 INFO L129 PetriNetUnfolder]: 12/238 cut-off events. [2021-11-25 20:39:40,590 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2021-11-25 20:39:40,594 INFO L84 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 238 events. 12/238 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 525 event pairs, 0 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 212. Up to 12 conditions per place. [2021-11-25 20:39:40,608 INFO L116 LiptonReduction]: Number of co-enabled transitions 13020 [2021-11-25 20:39:42,881 INFO L131 LiptonReduction]: Checked pairs total: 18872 [2021-11-25 20:39:42,881 INFO L133 LiptonReduction]: Total number of compositions: 173 [2021-11-25 20:39:42,882 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 35 transitions, 115 flow [2021-11-25 20:39:44,062 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 22615 states, 22524 states have (on average 5.468611259101403) internal successors, (123175), 22614 states have internal predecessors, (123175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:44,110 INFO L276 IsEmpty]: Start isEmpty. Operand has 22615 states, 22524 states have (on average 5.468611259101403) internal successors, (123175), 22614 states have internal predecessors, (123175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:44,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 20:39:44,111 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:39:44,111 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 20:39:44,111 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-25 20:39:44,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:39:44,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1352617162, now seen corresponding path program 1 times [2021-11-25 20:39:44,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:39:44,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671025780] [2021-11-25 20:39:44,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:44,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:39:44,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:39:44,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:39:44,152 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:39:44,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671025780] [2021-11-25 20:39:44,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671025780] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:39:44,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:39:44,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 20:39:44,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228172618] [2021-11-25 20:39:44,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:39:44,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:39:44,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:39:44,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:39:44,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:39:44,200 INFO L87 Difference]: Start difference. First operand has 22615 states, 22524 states have (on average 5.468611259101403) internal successors, (123175), 22614 states have internal predecessors, (123175), 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 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:44,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:39:44,730 INFO L93 Difference]: Finished difference Result 16829 states and 73499 transitions. [2021-11-25 20:39:44,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:39:44,732 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-11-25 20:39:44,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:39:45,020 INFO L225 Difference]: With dead ends: 16829 [2021-11-25 20:39:45,021 INFO L226 Difference]: Without dead ends: 16803 [2021-11-25 20:39:45,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:39:45,022 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 22 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:39:45,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 8 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:39:45,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16803 states. [2021-11-25 20:39:45,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16803 to 16803. [2021-11-25 20:39:45,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16803 states, 16720 states have (on average 4.3875598086124405) internal successors, (73360), 16802 states have internal predecessors, (73360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:45,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16803 states to 16803 states and 73360 transitions. [2021-11-25 20:39:45,930 INFO L78 Accepts]: Start accepts. Automaton has 16803 states and 73360 transitions. Word has length 5 [2021-11-25 20:39:45,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:39:45,930 INFO L470 AbstractCegarLoop]: Abstraction has 16803 states and 73360 transitions. [2021-11-25 20:39:45,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:45,930 INFO L276 IsEmpty]: Start isEmpty. Operand 16803 states and 73360 transitions. [2021-11-25 20:39:45,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-25 20:39:45,931 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:39:45,931 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:39:45,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 20:39:45,933 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-25 20:39:45,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:39:45,934 INFO L85 PathProgramCache]: Analyzing trace with hash -492166891, now seen corresponding path program 1 times [2021-11-25 20:39:45,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:39:45,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027740784] [2021-11-25 20:39:45,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:45,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:39:45,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:39:45,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:39:45,987 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:39:45,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027740784] [2021-11-25 20:39:45,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027740784] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:39:45,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316271974] [2021-11-25 20:39:45,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:45,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:39:45,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:39:45,989 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:39:46,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 20:39:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:39:46,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 20:39:46,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:39:46,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:39:46,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:39:46,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 20:39:46,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316271974] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 20:39:46,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 20:39:46,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4] total 8 [2021-11-25 20:39:46,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999348851] [2021-11-25 20:39:46,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:39:46,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:39:46,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:39:46,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:39:46,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-25 20:39:46,300 INFO L87 Difference]: Start difference. First operand 16803 states and 73360 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:46,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:39:46,806 INFO L93 Difference]: Finished difference Result 35360 states and 138380 transitions. [2021-11-25 20:39:46,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:39:46,807 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-25 20:39:46,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:39:47,195 INFO L225 Difference]: With dead ends: 35360 [2021-11-25 20:39:47,196 INFO L226 Difference]: Without dead ends: 35332 [2021-11-25 20:39:47,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-25 20:39:47,197 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 33 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:39:47,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 8 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:39:47,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35332 states. [2021-11-25 20:39:48,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35332 to 31948. [2021-11-25 20:39:48,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31948 states, 31865 states have (on average 4.005460536638946) internal successors, (127634), 31947 states have internal predecessors, (127634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:48,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31948 states to 31948 states and 127634 transitions. [2021-11-25 20:39:48,606 INFO L78 Accepts]: Start accepts. Automaton has 31948 states and 127634 transitions. Word has length 12 [2021-11-25 20:39:48,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:39:48,606 INFO L470 AbstractCegarLoop]: Abstraction has 31948 states and 127634 transitions. [2021-11-25 20:39:48,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:48,606 INFO L276 IsEmpty]: Start isEmpty. Operand 31948 states and 127634 transitions. [2021-11-25 20:39:48,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-25 20:39:48,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:39:48,607 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:39:48,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 20:39:48,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-25 20:39:48,812 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-25 20:39:48,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:39:48,813 INFO L85 PathProgramCache]: Analyzing trace with hash 452966289, now seen corresponding path program 2 times [2021-11-25 20:39:48,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:39:48,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178663079] [2021-11-25 20:39:48,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:48,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:39:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:39:49,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:39:49,081 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:39:49,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178663079] [2021-11-25 20:39:49,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178663079] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:39:49,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:39:49,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:39:49,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419890699] [2021-11-25 20:39:49,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:39:49,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:39:49,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:39:49,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:39:49,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:39:49,083 INFO L87 Difference]: Start difference. First operand 31948 states and 127634 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:49,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:39:49,343 INFO L93 Difference]: Finished difference Result 23145 states and 90019 transitions. [2021-11-25 20:39:49,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:39:49,344 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2021-11-25 20:39:49,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:39:49,429 INFO L225 Difference]: With dead ends: 23145 [2021-11-25 20:39:49,429 INFO L226 Difference]: Without dead ends: 23135 [2021-11-25 20:39:49,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:39:49,430 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 59 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:39:49,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 14 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:39:49,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23135 states. [2021-11-25 20:39:50,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23135 to 19955. [2021-11-25 20:39:50,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19955 states, 19891 states have (on average 3.9201146247046403) internal successors, (77975), 19954 states have internal predecessors, (77975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:50,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19955 states to 19955 states and 77975 transitions. [2021-11-25 20:39:50,239 INFO L78 Accepts]: Start accepts. Automaton has 19955 states and 77975 transitions. Word has length 12 [2021-11-25 20:39:50,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:39:50,239 INFO L470 AbstractCegarLoop]: Abstraction has 19955 states and 77975 transitions. [2021-11-25 20:39:50,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:50,240 INFO L276 IsEmpty]: Start isEmpty. Operand 19955 states and 77975 transitions. [2021-11-25 20:39:50,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-25 20:39:50,242 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:39:50,242 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:39:50,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-25 20:39:50,243 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-25 20:39:50,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:39:50,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1235083726, now seen corresponding path program 1 times [2021-11-25 20:39:50,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:39:50,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778064110] [2021-11-25 20:39:50,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:50,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:39:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:39:50,299 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 20:39:50,300 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:39:50,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778064110] [2021-11-25 20:39:50,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778064110] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:39:50,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344521831] [2021-11-25 20:39:50,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:50,301 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:39:50,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:39:50,312 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:39:50,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 20:39:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:39:50,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 20:39:50,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:39:50,544 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 20:39:50,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:39:50,599 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 20:39:50,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344521831] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 20:39:50,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 20:39:50,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 6] total 11 [2021-11-25 20:39:50,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745147370] [2021-11-25 20:39:50,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:39:50,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:39:50,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:39:50,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:39:50,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:39:50,602 INFO L87 Difference]: Start difference. First operand 19955 states and 77975 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:50,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:39:50,950 INFO L93 Difference]: Finished difference Result 31915 states and 118963 transitions. [2021-11-25 20:39:50,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:39:50,951 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 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 19 [2021-11-25 20:39:50,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:39:51,063 INFO L225 Difference]: With dead ends: 31915 [2021-11-25 20:39:51,063 INFO L226 Difference]: Without dead ends: 31591 [2021-11-25 20:39:51,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:39:51,064 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 37 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:39:51,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 12 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:39:51,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31591 states. [2021-11-25 20:39:51,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31591 to 19508. [2021-11-25 20:39:51,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19508 states, 19444 states have (on average 3.915758074470274) internal successors, (76138), 19507 states have internal predecessors, (76138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:52,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19508 states to 19508 states and 76138 transitions. [2021-11-25 20:39:52,018 INFO L78 Accepts]: Start accepts. Automaton has 19508 states and 76138 transitions. Word has length 19 [2021-11-25 20:39:52,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:39:52,019 INFO L470 AbstractCegarLoop]: Abstraction has 19508 states and 76138 transitions. [2021-11-25 20:39:52,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:52,019 INFO L276 IsEmpty]: Start isEmpty. Operand 19508 states and 76138 transitions. [2021-11-25 20:39:52,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-25 20:39:52,020 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:39:52,020 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:39:52,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-25 20:39:52,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-25 20:39:52,221 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-25 20:39:52,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:39:52,222 INFO L85 PathProgramCache]: Analyzing trace with hash -933845380, now seen corresponding path program 2 times [2021-11-25 20:39:52,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:39:52,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643299699] [2021-11-25 20:39:52,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:52,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:39:52,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:39:52,289 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 20:39:52,290 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:39:52,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643299699] [2021-11-25 20:39:52,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643299699] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:39:52,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:39:52,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 20:39:52,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587795052] [2021-11-25 20:39:52,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:39:52,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:39:52,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:39:52,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:39:52,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:39:52,292 INFO L87 Difference]: Start difference. First operand 19508 states and 76138 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:52,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:39:52,913 INFO L93 Difference]: Finished difference Result 24435 states and 97098 transitions. [2021-11-25 20:39:52,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 20:39:52,913 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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 19 [2021-11-25 20:39:52,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:39:52,979 INFO L225 Difference]: With dead ends: 24435 [2021-11-25 20:39:52,980 INFO L226 Difference]: Without dead ends: 24315 [2021-11-25 20:39:52,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:39:52,981 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 80 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:39:52,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 26 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:39:53,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24315 states. [2021-11-25 20:39:53,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24315 to 14872. [2021-11-25 20:39:53,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14872 states, 14837 states have (on average 4.063422524769158) internal successors, (60289), 14871 states have internal predecessors, (60289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:53,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14872 states to 14872 states and 60289 transitions. [2021-11-25 20:39:53,662 INFO L78 Accepts]: Start accepts. Automaton has 14872 states and 60289 transitions. Word has length 19 [2021-11-25 20:39:53,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:39:53,662 INFO L470 AbstractCegarLoop]: Abstraction has 14872 states and 60289 transitions. [2021-11-25 20:39:53,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:53,662 INFO L276 IsEmpty]: Start isEmpty. Operand 14872 states and 60289 transitions. [2021-11-25 20:39:53,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-25 20:39:53,688 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:39:53,688 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:39:53,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-25 20:39:53,689 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-25 20:39:53,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:39:53,700 INFO L85 PathProgramCache]: Analyzing trace with hash 566362514, now seen corresponding path program 1 times [2021-11-25 20:39:53,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:39:53,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523227466] [2021-11-25 20:39:53,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:53,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:39:53,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 20:39:53,744 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 20:39:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 20:39:53,773 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 20:39:53,776 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 20:39:53,776 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (6 of 7 remaining) [2021-11-25 20:39:53,776 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2021-11-25 20:39:53,777 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2021-11-25 20:39:53,777 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2021-11-25 20:39:53,778 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2021-11-25 20:39:53,779 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2021-11-25 20:39:53,779 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2021-11-25 20:39:53,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-25 20:39:53,779 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2021-11-25 20:39:53,780 WARN L234 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2021-11-25 20:39:53,780 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2021-11-25 20:39:53,794 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,794 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,794 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,795 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,795 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,795 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,795 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,795 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,795 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,795 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,796 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,796 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,796 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,796 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,796 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,796 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,797 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,797 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,797 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,797 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,797 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,797 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,797 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,798 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,798 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,798 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,798 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,798 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,798 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,798 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,799 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,799 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,799 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,799 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,799 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,799 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,800 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,800 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,800 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,800 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,800 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,800 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,800 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,801 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,801 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,801 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,801 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,801 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,801 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,801 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,802 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,802 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,802 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,802 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,802 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,802 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,803 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,803 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,803 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,803 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,803 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,803 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,803 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,804 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,804 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,804 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,804 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,804 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,804 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,805 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,805 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,805 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,805 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,805 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,805 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,805 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,806 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,806 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,806 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,806 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,806 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,806 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,806 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,807 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,807 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,807 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,807 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,807 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,807 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,808 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,808 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,808 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,808 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,808 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,808 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,808 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,809 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,809 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,809 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,809 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,809 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,809 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,809 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,810 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,810 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,810 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,810 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,810 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,810 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,810 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,811 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,811 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,811 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,811 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,811 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,811 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,811 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,812 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,812 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,812 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,812 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,812 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,812 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,813 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,813 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,813 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,813 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,813 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,813 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,814 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,814 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,814 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,814 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,814 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,814 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,814 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,814 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,815 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,815 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,815 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,815 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,815 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,815 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,816 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,816 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,816 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,816 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,816 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,816 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,817 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,817 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,817 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,817 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,817 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,817 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,818 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,818 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,818 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,818 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,818 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,818 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,819 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,819 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,819 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,819 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,819 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,819 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,819 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,820 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,820 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,820 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,820 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,820 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,820 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,821 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,821 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,821 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,821 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,821 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,821 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,821 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,822 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,822 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,822 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,822 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,822 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,822 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,822 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,823 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,823 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,823 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,823 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,823 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,824 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,824 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,824 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,824 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,824 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,824 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,825 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,825 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,825 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,825 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,825 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,826 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,826 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,826 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,826 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,826 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,827 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,827 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,827 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,827 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,827 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,827 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,828 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,829 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,829 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,829 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,829 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,829 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,829 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,830 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,830 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,830 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,830 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,830 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,831 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,831 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,831 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,831 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,831 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,832 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,832 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,832 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,832 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,832 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,832 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,832 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,833 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:39:53,833 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-25 20:39:53,835 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:39:53,835 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 20:39:53,835 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-25 20:39:53,837 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-25 20:39:53,837 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 185 places, 180 transitions, 420 flow [2021-11-25 20:39:53,840 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 185 places, 180 transitions, 420 flow [2021-11-25 20:39:53,840 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 185 places, 180 transitions, 420 flow [2021-11-25 20:39:53,889 INFO L129 PetriNetUnfolder]: 14/277 cut-off events. [2021-11-25 20:39:53,889 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2021-11-25 20:39:53,892 INFO L84 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 277 events. 14/277 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 621 event pairs, 0 based on Foata normal form. 0/250 useless extension candidates. Maximal degree in co-relation 257. Up to 14 conditions per place. [2021-11-25 20:39:53,907 INFO L116 LiptonReduction]: Number of co-enabled transitions 18396 [2021-11-25 20:39:56,239 INFO L131 LiptonReduction]: Checked pairs total: 25864 [2021-11-25 20:39:56,239 INFO L133 LiptonReduction]: Total number of compositions: 191 [2021-11-25 20:39:56,240 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 41 transitions, 142 flow [2021-11-25 20:40:00,667 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 113230 states, 113040 states have (on average 6.45682059447983) internal successors, (729879), 113229 states have internal predecessors, (729879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:40:00,853 INFO L276 IsEmpty]: Start isEmpty. Operand has 113230 states, 113040 states have (on average 6.45682059447983) internal successors, (729879), 113229 states have internal predecessors, (729879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:40:00,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 20:40:00,854 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:40:00,854 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 20:40:00,854 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-25 20:40:00,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:40:00,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1728982097, now seen corresponding path program 1 times [2021-11-25 20:40:00,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:40:00,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994423832] [2021-11-25 20:40:00,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:40:00,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:40:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:40:00,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:40:00,950 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:40:00,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994423832] [2021-11-25 20:40:00,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994423832] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:40:00,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:40:00,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:40:00,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120055126] [2021-11-25 20:40:00,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:40:00,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:40:00,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:40:00,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:40:00,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:40:01,666 INFO L87 Difference]: Start difference. First operand has 113230 states, 113040 states have (on average 6.45682059447983) internal successors, (729879), 113229 states have internal predecessors, (729879), 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 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:40:05,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:40:05,357 INFO L93 Difference]: Finished difference Result 201374 states and 931202 transitions. [2021-11-25 20:40:05,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:40:05,371 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2021-11-25 20:40:05,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:40:06,729 INFO L225 Difference]: With dead ends: 201374 [2021-11-25 20:40:06,729 INFO L226 Difference]: Without dead ends: 201124 [2021-11-25 20:40:06,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:40:06,730 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 50 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:40:06,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 12 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:40:07,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201124 states. [2021-11-25 20:40:14,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201124 to 185573. [2021-11-25 20:40:15,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185573 states, 185396 states have (on average 4.683817342337483) internal successors, (868361), 185572 states have internal predecessors, (868361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:40:17,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185573 states to 185573 states and 868361 transitions. [2021-11-25 20:40:17,500 INFO L78 Accepts]: Start accepts. Automaton has 185573 states and 868361 transitions. Word has length 5 [2021-11-25 20:40:17,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:40:17,500 INFO L470 AbstractCegarLoop]: Abstraction has 185573 states and 868361 transitions. [2021-11-25 20:40:17,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:40:17,500 INFO L276 IsEmpty]: Start isEmpty. Operand 185573 states and 868361 transitions. [2021-11-25 20:40:17,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-25 20:40:17,504 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:40:17,504 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:40:17,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-25 20:40:17,504 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-25 20:40:17,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:40:17,505 INFO L85 PathProgramCache]: Analyzing trace with hash -2058550453, now seen corresponding path program 1 times [2021-11-25 20:40:17,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:40:17,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366838247] [2021-11-25 20:40:17,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:40:17,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:40:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:40:17,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:40:17,626 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:40:17,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366838247] [2021-11-25 20:40:17,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366838247] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:40:17,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949831313] [2021-11-25 20:40:17,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:40:17,627 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:40:17,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:40:17,640 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:40:17,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1da8e2db-0ac2-47dc-a9c4-de1b82c939a7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 20:40:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:40:17,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 20:40:17,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:40:17,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:40:17,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:40:17,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949831313] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:40:17,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:40:17,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2021-11-25 20:40:17,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380133451] [2021-11-25 20:40:17,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:40:17,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:40:17,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:40:17,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:40:17,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-25 20:40:17,851 INFO L87 Difference]: Start difference. First operand 185573 states and 868361 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:40:19,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:40:19,782 INFO L93 Difference]: Finished difference Result 132610 states and 613153 transitions. [2021-11-25 20:40:19,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:40:19,783 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2021-11-25 20:40:19,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:40:20,570 INFO L225 Difference]: With dead ends: 132610 [2021-11-25 20:40:20,570 INFO L226 Difference]: Without dead ends: 132600 [2021-11-25 20:40:20,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-25 20:40:20,571 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 56 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:40:20,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 22 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:40:20,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132600 states. [2021-11-25 20:40:24,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132600 to 119840. [2021-11-25 20:40:24,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119840 states, 119689 states have (on average 4.529221565891603) internal successors, (542098), 119839 states have internal predecessors, (542098), 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)