./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe006_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5abd36-1a9c-40bf-ac9b-839549aff8e2/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5abd36-1a9c-40bf-ac9b-839549aff8e2/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5abd36-1a9c-40bf-ac9b-839549aff8e2/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5abd36-1a9c-40bf-ac9b-839549aff8e2/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe006_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5abd36-1a9c-40bf-ac9b-839549aff8e2/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5abd36-1a9c-40bf-ac9b-839549aff8e2/bin/utaipan-q2qaUkNPG8 --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 642ce1f5575f93f1a4c25d439366f0b058fd13dc ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:35:23,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:35:23,983 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:35:24,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:35:24,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:35:24,056 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:35:24,058 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:35:24,063 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:35:24,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:35:24,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:35:24,070 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:35:24,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:35:24,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:35:24,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:35:24,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:35:24,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:35:24,079 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:35:24,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:35:24,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:35:24,086 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:35:24,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:35:24,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:35:24,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:35:24,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:35:24,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:35:24,098 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:35:24,098 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:35:24,100 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:35:24,100 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:35:24,102 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:35:24,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:35:24,103 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:35:24,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:35:24,106 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:35:24,107 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:35:24,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:35:24,109 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:35:24,109 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:35:24,109 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:35:24,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:35:24,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:35:24,112 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5abd36-1a9c-40bf-ac9b-839549aff8e2/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:35:24,137 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:35:24,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:35:24,138 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:35:24,139 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:35:24,139 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:35:24,139 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:35:24,139 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:35:24,140 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:35:24,140 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:35:24,140 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:35:24,140 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:35:24,140 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:35:24,141 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:35:24,141 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:35:24,141 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:35:24,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:35:24,142 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:35:24,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:35:24,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:35:24,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:35:24,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:35:24,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:35:24,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:35:24,144 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:35:24,144 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:35:24,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:35:24,145 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:35:24,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:35:24,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:35:24,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:35:24,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:35:24,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:35:24,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:35:24,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:35:24,147 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:35:24,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:35:24,147 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:35:24,147 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:35:24,148 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:35:24,148 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_7b5abd36-1a9c-40bf-ac9b-839549aff8e2/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5abd36-1a9c-40bf-ac9b-839549aff8e2/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 642ce1f5575f93f1a4c25d439366f0b058fd13dc [2021-10-13 07:35:24,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:35:24,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:35:24,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:35:24,496 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:35:24,497 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:35:24,498 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5abd36-1a9c-40bf-ac9b-839549aff8e2/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/pthread-wmm/safe006_rmo.opt.i [2021-10-13 07:35:24,586 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5abd36-1a9c-40bf-ac9b-839549aff8e2/bin/utaipan-q2qaUkNPG8/data/7571d72db/7fd10d0b8df549a594be047b9de9e387/FLAG92be9282a [2021-10-13 07:35:25,241 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:35:25,242 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5abd36-1a9c-40bf-ac9b-839549aff8e2/sv-benchmarks/c/pthread-wmm/safe006_rmo.opt.i [2021-10-13 07:35:25,257 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5abd36-1a9c-40bf-ac9b-839549aff8e2/bin/utaipan-q2qaUkNPG8/data/7571d72db/7fd10d0b8df549a594be047b9de9e387/FLAG92be9282a [2021-10-13 07:35:25,472 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5abd36-1a9c-40bf-ac9b-839549aff8e2/bin/utaipan-q2qaUkNPG8/data/7571d72db/7fd10d0b8df549a594be047b9de9e387 [2021-10-13 07:35:25,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:35:25,476 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:35:25,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:35:25,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:35:25,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:35:25,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:35:25" (1/1) ... [2021-10-13 07:35:25,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bc1587f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:25, skipping insertion in model container [2021-10-13 07:35:25,485 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:35:25" (1/1) ... [2021-10-13 07:35:25,493 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:35:25,543 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:35:25,788 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5abd36-1a9c-40bf-ac9b-839549aff8e2/sv-benchmarks/c/pthread-wmm/safe006_rmo.opt.i[992,1005] [2021-10-13 07:35:26,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:35:26,028 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:35:26,046 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5abd36-1a9c-40bf-ac9b-839549aff8e2/sv-benchmarks/c/pthread-wmm/safe006_rmo.opt.i[992,1005] [2021-10-13 07:35:26,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:35:26,180 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:35:26,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:26 WrapperNode [2021-10-13 07:35:26,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:35:26,182 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:35:26,182 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:35:26,182 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:35:26,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:26" (1/1) ... [2021-10-13 07:35:26,207 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:26" (1/1) ... [2021-10-13 07:35:26,237 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:35:26,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:35:26,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:35:26,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:35:26,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:26" (1/1) ... [2021-10-13 07:35:26,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:26" (1/1) ... [2021-10-13 07:35:26,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:26" (1/1) ... [2021-10-13 07:35:26,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:26" (1/1) ... [2021-10-13 07:35:26,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:26" (1/1) ... [2021-10-13 07:35:26,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:26" (1/1) ... [2021-10-13 07:35:26,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:26" (1/1) ... [2021-10-13 07:35:26,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:35:26,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:35:26,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:35:26,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:35:26,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:26" (1/1) ... [2021-10-13 07:35:26,335 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:35:26,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5abd36-1a9c-40bf-ac9b-839549aff8e2/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:35:26,371 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5abd36-1a9c-40bf-ac9b-839549aff8e2/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:35:26,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5abd36-1a9c-40bf-ac9b-839549aff8e2/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:35:26,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 07:35:26,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 07:35:26,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 07:35:26,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:35:26,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:35:26,425 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-13 07:35:26,426 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-13 07:35:26,426 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-13 07:35:26,426 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-13 07:35:26,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:35:26,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 07:35:26,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:35:26,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:35:26,429 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 07:35:28,225 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:35:28,225 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-13 07:35:28,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:35:28 BoogieIcfgContainer [2021-10-13 07:35:28,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:35:28,229 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:35:28,229 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:35:28,233 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:35:28,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:35:25" (1/3) ... [2021-10-13 07:35:28,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47b0d7d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:35:28, skipping insertion in model container [2021-10-13 07:35:28,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:26" (2/3) ... [2021-10-13 07:35:28,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47b0d7d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:35:28, skipping insertion in model container [2021-10-13 07:35:28,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:35:28" (3/3) ... [2021-10-13 07:35:28,236 INFO L111 eAbstractionObserver]: Analyzing ICFG safe006_rmo.opt.i [2021-10-13 07:35:28,241 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-13 07:35:28,241 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:35:28,241 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:35:28,241 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 07:35:28,275 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,275 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,275 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,275 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,276 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,276 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,276 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,276 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,276 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,276 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,277 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,277 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,277 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,277 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,277 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,277 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,277 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,301 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,302 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,302 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~mem30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,302 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,302 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,302 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,302 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,303 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,303 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~mem29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,303 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,303 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,303 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,303 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,304 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,304 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,304 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,304 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,304 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,304 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,304 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,305 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,305 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,305 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,305 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,312 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,312 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,312 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,312 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,313 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~mem30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,313 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,313 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,314 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,314 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,314 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,314 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,321 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,322 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,322 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,322 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,322 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,322 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,323 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,323 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,323 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,323 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,323 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,324 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~mem30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,324 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,324 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,324 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,324 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,325 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,325 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~mem29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,325 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,326 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,326 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,326 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,327 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,328 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,328 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,328 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,329 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,329 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,330 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,333 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,333 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,333 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,335 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,335 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,335 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,336 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,336 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,336 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~mem30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,342 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,342 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,342 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,342 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,343 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,343 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,345 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,345 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,346 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,346 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,347 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,347 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,347 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,348 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,348 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,348 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,348 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,348 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,349 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,349 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~mem32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,349 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~mem32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,349 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,349 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,350 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,350 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,350 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,350 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,353 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,353 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~mem32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,353 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~mem32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,353 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,354 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,354 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,354 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,354 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,354 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,355 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,355 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,356 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,356 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,367 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,367 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,368 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,368 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~mem30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,368 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,368 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,368 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,369 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,369 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,369 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,369 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,370 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,370 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,370 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,370 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,370 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,371 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,371 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,371 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,371 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,371 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,372 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,372 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,372 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,372 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,373 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~mem29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,373 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,373 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,373 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,373 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,374 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,376 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~mem32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,377 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,377 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,377 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,377 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,377 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,378 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,379 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,380 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,381 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,381 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:35:28,382 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-13 07:35:28,436 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:35:28,447 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:35:28,448 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-13 07:35:28,472 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 07:35:28,485 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 101 transitions, 212 flow [2021-10-13 07:35:28,488 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 101 transitions, 212 flow [2021-10-13 07:35:28,490 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 106 places, 101 transitions, 212 flow [2021-10-13 07:35:28,538 INFO L129 PetriNetUnfolder]: 2/99 cut-off events. [2021-10-13 07:35:28,538 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-13 07:35:28,545 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 99 events. 2/99 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 39 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2021-10-13 07:35:28,550 INFO L116 LiptonReduction]: Number of co-enabled transitions 844 [2021-10-13 07:35:54,557 INFO L131 LiptonReduction]: Checked pairs total: 1951 [2021-10-13 07:35:54,558 INFO L133 LiptonReduction]: Total number of compositions: 93 [2021-10-13 07:35:54,578 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 19 transitions, 48 flow [2021-10-13 07:35:54,610 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 110 states, 109 states have (on average 2.4862385321100917) internal successors, (271), 109 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:35:54,615 INFO L276 IsEmpty]: Start isEmpty. Operand has 110 states, 109 states have (on average 2.4862385321100917) internal successors, (271), 109 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:35:54,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:35:54,624 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:35:54,625 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:35:54,625 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 07:35:54,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:35:54,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1447335844, now seen corresponding path program 1 times [2021-10-13 07:35:54,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:35:54,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187982748] [2021-10-13 07:35:54,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:35:54,645 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:35:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:35:54,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:35:54,912 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:35:54,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187982748] [2021-10-13 07:35:54,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187982748] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:35:54,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:35:54,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:35:54,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925443721] [2021-10-13 07:35:54,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:35:54,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:35:54,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:35:54,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:35:54,951 INFO L87 Difference]: Start difference. First operand has 110 states, 109 states have (on average 2.4862385321100917) internal successors, (271), 109 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:35:54,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:35:54,978 INFO L93 Difference]: Finished difference Result 110 states and 251 transitions. [2021-10-13 07:35:54,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:35:54,979 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 07:35:54,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:35:54,989 INFO L225 Difference]: With dead ends: 110 [2021-10-13 07:35:54,989 INFO L226 Difference]: Without dead ends: 110 [2021-10-13 07:35:54,990 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:35:55,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-13 07:35:55,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-10-13 07:35:55,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 2.302752293577982) internal successors, (251), 109 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:35:55,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 251 transitions. [2021-10-13 07:35:55,033 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 251 transitions. Word has length 6 [2021-10-13 07:35:55,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:35:55,034 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 251 transitions. [2021-10-13 07:35:55,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:35:55,034 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 251 transitions. [2021-10-13 07:35:55,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:35:55,035 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:35:55,035 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:35:55,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:35:55,036 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 07:35:55,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:35:55,037 INFO L82 PathProgramCache]: Analyzing trace with hash -680374143, now seen corresponding path program 1 times [2021-10-13 07:35:55,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:35:55,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270966542] [2021-10-13 07:35:55,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:35:55,038 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:35:55,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:35:55,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:35:55,252 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:35:55,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270966542] [2021-10-13 07:35:55,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270966542] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:35:55,253 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:35:55,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:35:55,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972708183] [2021-10-13 07:35:55,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:35:55,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:35:55,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:35:55,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:35:55,256 INFO L87 Difference]: Start difference. First operand 110 states and 251 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:35:55,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:35:55,282 INFO L93 Difference]: Finished difference Result 122 states and 264 transitions. [2021-10-13 07:35:55,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:35:55,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2021-10-13 07:35:55,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:35:55,284 INFO L225 Difference]: With dead ends: 122 [2021-10-13 07:35:55,285 INFO L226 Difference]: Without dead ends: 102 [2021-10-13 07:35:55,285 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:35:55,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-13 07:35:55,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-10-13 07:35:55,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 2.267326732673267) internal successors, (229), 101 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:35:55,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 229 transitions. [2021-10-13 07:35:55,298 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 229 transitions. Word has length 8 [2021-10-13 07:35:55,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:35:55,299 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 229 transitions. [2021-10-13 07:35:55,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:35:55,299 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 229 transitions. [2021-10-13 07:35:55,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 07:35:55,300 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:35:55,300 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:35:55,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:35:55,301 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 07:35:55,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:35:55,302 INFO L82 PathProgramCache]: Analyzing trace with hash 360899410, now seen corresponding path program 1 times [2021-10-13 07:35:55,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:35:55,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992770941] [2021-10-13 07:35:55,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:35:55,303 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:35:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:35:55,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:35:55,417 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:35:55,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992770941] [2021-10-13 07:35:55,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992770941] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:35:55,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:35:55,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:35:55,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268222530] [2021-10-13 07:35:55,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:35:55,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:35:55,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:35:55,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:35:55,426 INFO L87 Difference]: Start difference. First operand 102 states and 229 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:35:55,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:35:55,484 INFO L93 Difference]: Finished difference Result 126 states and 271 transitions. [2021-10-13 07:35:55,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:35:55,484 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2021-10-13 07:35:55,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:35:55,489 INFO L225 Difference]: With dead ends: 126 [2021-10-13 07:35:55,489 INFO L226 Difference]: Without dead ends: 62 [2021-10-13 07:35:55,490 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 23.3ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:35:55,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-13 07:35:55,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-10-13 07:35:55,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.9836065573770492) internal successors, (121), 61 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:35:55,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 121 transitions. [2021-10-13 07:35:55,511 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 121 transitions. Word has length 9 [2021-10-13 07:35:55,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:35:55,512 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 121 transitions. [2021-10-13 07:35:55,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:35:55,512 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 121 transitions. [2021-10-13 07:35:55,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 07:35:55,514 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:35:55,514 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:35:55,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:35:55,514 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 07:35:55,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:35:55,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1077784883, now seen corresponding path program 1 times [2021-10-13 07:35:55,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:35:55,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860786647] [2021-10-13 07:35:55,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:35:55,516 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:35:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:35:55,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:35:55,817 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:35:55,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860786647] [2021-10-13 07:35:55,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860786647] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:35:55,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:35:55,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 07:35:55,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880480477] [2021-10-13 07:35:55,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:35:55,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:35:55,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:35:55,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:35:55,820 INFO L87 Difference]: Start difference. First operand 62 states and 121 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:35:55,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:35:55,943 INFO L93 Difference]: Finished difference Result 88 states and 169 transitions. [2021-10-13 07:35:55,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:35:55,944 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 07:35:55,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:35:55,946 INFO L225 Difference]: With dead ends: 88 [2021-10-13 07:35:55,946 INFO L226 Difference]: Without dead ends: 80 [2021-10-13 07:35:55,946 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 67.5ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:35:55,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-13 07:35:55,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-10-13 07:35:55,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.9873417721518987) internal successors, (157), 79 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:35:55,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 157 transitions. [2021-10-13 07:35:55,954 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 157 transitions. Word has length 11 [2021-10-13 07:35:55,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:35:55,954 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 157 transitions. [2021-10-13 07:35:55,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:35:55,954 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 157 transitions. [2021-10-13 07:35:55,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 07:35:55,956 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:35:55,956 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:35:55,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 07:35:55,956 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 07:35:55,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:35:55,957 INFO L82 PathProgramCache]: Analyzing trace with hash -278230853, now seen corresponding path program 2 times [2021-10-13 07:35:55,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:35:55,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806091866] [2021-10-13 07:35:55,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:35:55,957 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:35:55,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:35:56,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:35:56,215 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:35:56,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806091866] [2021-10-13 07:35:56,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806091866] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:35:56,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:35:56,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 07:35:56,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223678992] [2021-10-13 07:35:56,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:35:56,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:35:56,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:35:56,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:35:56,220 INFO L87 Difference]: Start difference. First operand 80 states and 157 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:35:56,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:35:56,359 INFO L93 Difference]: Finished difference Result 89 states and 166 transitions. [2021-10-13 07:35:56,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:35:56,360 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 07:35:56,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:35:56,361 INFO L225 Difference]: With dead ends: 89 [2021-10-13 07:35:56,361 INFO L226 Difference]: Without dead ends: 81 [2021-10-13 07:35:56,362 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 92.8ms TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:35:56,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-10-13 07:35:56,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 58. [2021-10-13 07:35:56,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.9473684210526316) internal successors, (111), 57 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:35:56,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 111 transitions. [2021-10-13 07:35:56,367 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 111 transitions. Word has length 11 [2021-10-13 07:35:56,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:35:56,367 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 111 transitions. [2021-10-13 07:35:56,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:35:56,368 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 111 transitions. [2021-10-13 07:35:56,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 07:35:56,369 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:35:56,369 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:35:56,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 07:35:56,369 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 07:35:56,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:35:56,375 INFO L82 PathProgramCache]: Analyzing trace with hash 948372207, now seen corresponding path program 1 times [2021-10-13 07:35:56,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:35:56,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380186273] [2021-10-13 07:35:56,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:35:56,376 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:35:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:35:56,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:35:56,582 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:35:56,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380186273] [2021-10-13 07:35:56,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380186273] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:35:56,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:35:56,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:35:56,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886741944] [2021-10-13 07:35:56,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:35:56,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:35:56,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:35:56,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:35:56,589 INFO L87 Difference]: Start difference. First operand 58 states and 111 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 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) [2021-10-13 07:35:56,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:35:56,609 INFO L93 Difference]: Finished difference Result 54 states and 88 transitions. [2021-10-13 07:35:56,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:35:56,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 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 [2021-10-13 07:35:56,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:35:56,611 INFO L225 Difference]: With dead ends: 54 [2021-10-13 07:35:56,611 INFO L226 Difference]: Without dead ends: 42 [2021-10-13 07:35:56,611 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:35:56,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-13 07:35:56,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-10-13 07:35:56,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 41 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:35:56,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 67 transitions. [2021-10-13 07:35:56,615 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 67 transitions. Word has length 12 [2021-10-13 07:35:56,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:35:56,615 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 67 transitions. [2021-10-13 07:35:56,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 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) [2021-10-13 07:35:56,616 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 67 transitions. [2021-10-13 07:35:56,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 07:35:56,616 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:35:56,617 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:35:56,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 07:35:56,617 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 07:35:56,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:35:56,623 INFO L82 PathProgramCache]: Analyzing trace with hash -2073191749, now seen corresponding path program 1 times [2021-10-13 07:35:56,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:35:56,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184406225] [2021-10-13 07:35:56,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:35:56,624 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:35:56,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:35:56,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:35:56,735 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:35:56,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184406225] [2021-10-13 07:35:56,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184406225] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:35:56,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:35:56,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:35:56,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124807202] [2021-10-13 07:35:56,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:35:56,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:35:56,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:35:56,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:35:56,738 INFO L87 Difference]: Start difference. First operand 42 states and 67 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 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) [2021-10-13 07:35:56,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:35:56,772 INFO L93 Difference]: Finished difference Result 32 states and 45 transitions. [2021-10-13 07:35:56,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:35:56,773 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 07:35:56,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:35:56,774 INFO L225 Difference]: With dead ends: 32 [2021-10-13 07:35:56,774 INFO L226 Difference]: Without dead ends: 26 [2021-10-13 07:35:56,775 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 18.4ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:35:56,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-13 07:35:56,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-13 07:35:56,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.4) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:35:56,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2021-10-13 07:35:56,780 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 13 [2021-10-13 07:35:56,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:35:56,780 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2021-10-13 07:35:56,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 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) [2021-10-13 07:35:56,781 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2021-10-13 07:35:56,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 07:35:56,782 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:35:56,782 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:35:56,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 07:35:56,783 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 07:35:56,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:35:56,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1301048155, now seen corresponding path program 1 times [2021-10-13 07:35:56,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:35:56,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695250400] [2021-10-13 07:35:56,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:35:56,784 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:35:56,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:35:56,916 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:35:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:35:57,091 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 07:35:57,092 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:35:57,093 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:35:57,095 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 07:35:57,095 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 07:35:57,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 07:35:57,101 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 07:35:57,101 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:35:57,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:35:57 BasicIcfg [2021-10-13 07:35:57,204 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:35:57,205 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:35:57,205 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:35:57,205 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:35:57,206 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:35:28" (3/4) ... [2021-10-13 07:35:57,208 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 07:35:57,330 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5abd36-1a9c-40bf-ac9b-839549aff8e2/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:35:57,330 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:35:57,332 INFO L168 Benchmark]: Toolchain (without parser) took 31854.27 ms. Allocated memory was 127.9 MB in the beginning and 163.6 MB in the end (delta: 35.7 MB). Free memory was 89.8 MB in the beginning and 91.0 MB in the end (delta: -1.3 MB). Peak memory consumption was 34.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:35:57,332 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 127.9 MB. Free memory was 102.2 MB in the beginning and 102.1 MB in the end (delta: 30.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:35:57,333 INFO L168 Benchmark]: CACSL2BoogieTranslator took 702.67 ms. Allocated memory is still 127.9 MB. Free memory was 89.6 MB in the beginning and 88.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:35:57,333 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.47 ms. Allocated memory is still 127.9 MB. Free memory was 88.5 MB in the beginning and 86.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:35:57,333 INFO L168 Benchmark]: Boogie Preprocessor took 85.24 ms. Allocated memory is still 127.9 MB. Free memory was 85.9 MB in the beginning and 84.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:35:57,334 INFO L168 Benchmark]: RCFGBuilder took 1900.66 ms. Allocated memory is still 127.9 MB. Free memory was 84.4 MB in the beginning and 50.9 MB in the end (delta: 33.4 MB). Peak memory consumption was 46.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:35:57,335 INFO L168 Benchmark]: TraceAbstraction took 28975.44 ms. Allocated memory was 127.9 MB in the beginning and 163.6 MB in the end (delta: 35.7 MB). Free memory was 50.2 MB in the beginning and 103.6 MB in the end (delta: -53.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:35:57,335 INFO L168 Benchmark]: Witness Printer took 125.22 ms. Allocated memory is still 163.6 MB. Free memory was 103.6 MB in the beginning and 91.0 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:35:57,338 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 127.9 MB. Free memory was 102.2 MB in the beginning and 102.1 MB in the end (delta: 30.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 702.67 ms. Allocated memory is still 127.9 MB. Free memory was 89.6 MB in the beginning and 88.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.47 ms. Allocated memory is still 127.9 MB. Free memory was 88.5 MB in the beginning and 86.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 85.24 ms. Allocated memory is still 127.9 MB. Free memory was 85.9 MB in the beginning and 84.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1900.66 ms. Allocated memory is still 127.9 MB. Free memory was 84.4 MB in the beginning and 50.9 MB in the end (delta: 33.4 MB). Peak memory consumption was 46.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 28975.44 ms. Allocated memory was 127.9 MB in the beginning and 163.6 MB in the end (delta: 35.7 MB). Free memory was 50.2 MB in the beginning and 103.6 MB in the end (delta: -53.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 125.22 ms. Allocated memory is still 163.6 MB. Free memory was 103.6 MB in the beginning and 91.0 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 26070.0ms, 106 PlacesBefore, 25 PlacesAfterwards, 101 TransitionsBefore, 19 TransitionsAfterwards, 844 CoEnabledTransitionPairs, 7 FixpointIterations, 51 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 93 TotalNumberOfCompositions, 1951 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1061, positive: 945, positive conditional: 0, positive unconditional: 945, negative: 116, negative conditional: 0, negative unconditional: 116, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 580, positive: 554, positive conditional: 0, positive unconditional: 554, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 580, positive: 543, positive conditional: 0, positive unconditional: 543, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 37, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 11, unknown conditional: 0, unknown unconditional: 11] , SemanticIndependenceRelation.Query Time [ms]: [ total: 15494, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 107, negative conditional: 0, negative unconditional: 107, unknown: 15372, unknown conditional: 0, unknown unconditional: 15372] ], Cache Queries: [ total: 1061, positive: 391, positive conditional: 0, positive unconditional: 391, negative: 90, negative conditional: 0, negative unconditional: 90, unknown: 580, unknown conditional: 0, unknown unconditional: 580] , Statistics on independence cache: Total cache size (in pairs): 57, Positive cache size: 46, Positive conditional cache size: 0, Positive unconditional cache size: 46, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p0_EAX = 0; [L712] 0 _Bool __unbuffered_p0_EAX$flush_delayed; [L713] 0 int __unbuffered_p0_EAX$mem_tmp; [L714] 0 _Bool __unbuffered_p0_EAX$r_buff0_thd0; [L715] 0 _Bool __unbuffered_p0_EAX$r_buff0_thd1; [L716] 0 _Bool __unbuffered_p0_EAX$r_buff0_thd2; [L717] 0 _Bool __unbuffered_p0_EAX$r_buff1_thd0; [L718] 0 _Bool __unbuffered_p0_EAX$r_buff1_thd1; [L719] 0 _Bool __unbuffered_p0_EAX$r_buff1_thd2; [L720] 0 _Bool __unbuffered_p0_EAX$read_delayed; [L721] 0 int *__unbuffered_p0_EAX$read_delayed_var; [L722] 0 int __unbuffered_p0_EAX$w_buff0; [L723] 0 _Bool __unbuffered_p0_EAX$w_buff0_used; [L724] 0 int __unbuffered_p0_EAX$w_buff1; [L725] 0 _Bool __unbuffered_p0_EAX$w_buff1_used; [L727] 0 int __unbuffered_p1_EAX = 0; [L728] 0 _Bool main$tmp_guard0; [L729] 0 _Bool main$tmp_guard1; [L731] 0 int x = 0; [L733] 0 int y = 0; [L734] 0 _Bool y$flush_delayed; [L735] 0 int y$mem_tmp; [L736] 0 _Bool y$r_buff0_thd0; [L737] 0 _Bool y$r_buff0_thd1; [L738] 0 _Bool y$r_buff0_thd2; [L739] 0 _Bool y$r_buff1_thd0; [L740] 0 _Bool y$r_buff1_thd1; [L741] 0 _Bool y$r_buff1_thd2; [L742] 0 _Bool y$read_delayed; [L743] 0 int *y$read_delayed_var; [L744] 0 int y$w_buff0; [L745] 0 _Bool y$w_buff0_used; [L746] 0 int y$w_buff1; [L747] 0 _Bool y$w_buff1_used; [L748] 0 _Bool weak$$choice0; [L749] 0 _Bool weak$$choice1; [L750] 0 _Bool weak$$choice2; [L812] 0 pthread_t t1931; [L813] FCALL, FORK 0 pthread_create(&t1931, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$read_delayed=0, __unbuffered_p0_EAX$read_delayed_var={0:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p1_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice1=0, weak$$choice2=0, x=0, y={6:0}, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L814] 0 pthread_t t1932; [L815] FCALL, FORK 0 pthread_create(&t1932, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$read_delayed=0, __unbuffered_p0_EAX$read_delayed_var={0:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice1=0, weak$$choice2=0, x=0, y={6:0}, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L754] 1 weak$$choice0 = __VERIFIER_nondet_bool() [L755] 1 weak$$choice2 = __VERIFIER_nondet_bool() [L756] 1 y$flush_delayed = weak$$choice2 [L757] EXPR 1 \read(y) [L757] 1 y$mem_tmp = y [L758] EXPR 1 !y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y : (y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : y$w_buff1) [L758] EXPR 1 \read(y) [L758] EXPR 1 !y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y : (y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : y$w_buff1) [L758] 1 y = !y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y : (y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : y$w_buff1) [L759] EXPR 1 weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : y$w_buff0)) [L759] EXPR 1 !y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : y$w_buff0) [L759] EXPR 1 weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : y$w_buff0)) [L759] 1 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : y$w_buff0)) [L760] EXPR 1 weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff1 : y$w_buff1)) [L760] EXPR 1 !y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff1 : y$w_buff1) [L760] EXPR 1 weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff1 : y$w_buff1)) [L760] 1 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff1 : y$w_buff1)) [L761] EXPR 1 weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used)) [L761] EXPR 1 !y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used) [L761] EXPR 1 weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used)) [L761] 1 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used)) [L762] EXPR 1 weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : (_Bool)0)) [L762] EXPR 1 !y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : (_Bool)0) [L762] EXPR 1 weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : (_Bool)0)) [L762] 1 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : (_Bool)0)) [L763] EXPR 1 weak$$choice2 ? y$r_buff0_thd1 : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$r_buff0_thd1 : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1)) [L763] EXPR 1 !y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$r_buff0_thd1 : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1) [L763] EXPR 1 weak$$choice2 ? y$r_buff0_thd1 : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$r_buff0_thd1 : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1)) [L763] 1 y$r_buff0_thd1 = weak$$choice2 ? y$r_buff0_thd1 : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$r_buff0_thd1 : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1)) [L764] EXPR 1 weak$$choice2 ? y$r_buff1_thd1 : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$r_buff1_thd1 : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : (_Bool)0)) [L764] EXPR 1 !y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$r_buff1_thd1 : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : (_Bool)0) [L764] EXPR 1 weak$$choice2 ? y$r_buff1_thd1 : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$r_buff1_thd1 : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : (_Bool)0)) [L764] 1 y$r_buff1_thd1 = weak$$choice2 ? y$r_buff1_thd1 : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$r_buff1_thd1 : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : (_Bool)0)) [L765] 1 __unbuffered_p0_EAX$read_delayed = (_Bool)1 [L766] 1 __unbuffered_p0_EAX$read_delayed_var = &y [L767] EXPR 1 \read(y) [L767] 1 __unbuffered_p0_EAX = y [L768] EXPR 1 y$flush_delayed ? y$mem_tmp : y [L768] EXPR 1 \read(y) [L768] EXPR 1 y$flush_delayed ? y$mem_tmp : y [L768] 1 y = y$flush_delayed ? y$mem_tmp : y [L769] 1 y$flush_delayed = (_Bool)0 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={6:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=3, weak$$choice1=0, weak$$choice2=0, x=0, y={6:0}, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L772] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={6:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=3, weak$$choice1=0, weak$$choice2=0, x=1, y={6:0}, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L784] 2 __unbuffered_p1_EAX = x VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={6:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=3, weak$$choice1=0, weak$$choice2=0, x=1, y={6:0}, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L777] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L779] 1 return 0; [L787] 2 y = 1 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p0_EAX=0, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={6:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=3, weak$$choice1=0, weak$$choice2=0, x=1, y={6:0}, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L790] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L790] EXPR 2 y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y [L790] EXPR 2 \read(y) [L790] EXPR 2 y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y [L790] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L790] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L791] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L791] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L792] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L792] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L793] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L793] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L794] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L794] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L797] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L799] 2 return 0; [L817] 0 main$tmp_guard0 = __unbuffered_cnt == 2 [L4] COND FALSE 0 !(!cond) [L821] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L821] EXPR 0 y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y [L821] EXPR 0 \read(y) [L821] EXPR 0 y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y [L821] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L821] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L822] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L822] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L823] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L823] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L824] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L824] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L825] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L825] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L828] 0 weak$$choice1 = __VERIFIER_nondet_bool() [L829] EXPR 0 __unbuffered_p0_EAX$read_delayed ? (weak$$choice1 ? *__unbuffered_p0_EAX$read_delayed_var : __unbuffered_p0_EAX) : __unbuffered_p0_EAX [L829] EXPR 0 weak$$choice1 ? *__unbuffered_p0_EAX$read_delayed_var : __unbuffered_p0_EAX [L829] EXPR 0 \read(*__unbuffered_p0_EAX$read_delayed_var) [L829] EXPR 0 weak$$choice1 ? *__unbuffered_p0_EAX$read_delayed_var : __unbuffered_p0_EAX [L829] EXPR 0 __unbuffered_p0_EAX$read_delayed ? (weak$$choice1 ? *__unbuffered_p0_EAX$read_delayed_var : __unbuffered_p0_EAX) : __unbuffered_p0_EAX [L829] 0 __unbuffered_p0_EAX = __unbuffered_p0_EAX$read_delayed ? (weak$$choice1 ? *__unbuffered_p0_EAX$read_delayed_var : __unbuffered_p0_EAX) : __unbuffered_p0_EAX [L830] 0 main$tmp_guard1 = !(__unbuffered_p0_EAX == 1 && __unbuffered_p1_EAX == 1) [L19] COND TRUE 0 !expression [L19] 0 reach_error() VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=1, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={6:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=3, weak$$choice1=255, weak$$choice2=0, x=1, y={6:0}, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] - UnprovableResult [Line: 813]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 815]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 117 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 28664.0ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 18.8ms, AutomataDifference: 498.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 26164.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 117 SDtfs, 126 SDslu, 185 SDs, 0 SdLazy, 130 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 197.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 232.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=0, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 83.4ms AutomataMinimizationTime, 7 MinimizatonAttempts, 23 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 44.3ms SsaConstructionTime, 592.5ms SatisfiabilityAnalysisTime, 827.4ms InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 63 ConstructedInterpolants, 0 QuantifiedInterpolants, 495 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-13 07:35:57,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5abd36-1a9c-40bf-ac9b-839549aff8e2/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...