./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40004b0a-51d9-4236-ac98-4232c94c9ffa/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40004b0a-51d9-4236-ac98-4232c94c9ffa/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40004b0a-51d9-4236-ac98-4232c94c9ffa/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40004b0a-51d9-4236-ac98-4232c94c9ffa/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40004b0a-51d9-4236-ac98-4232c94c9ffa/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40004b0a-51d9-4236-ac98-4232c94c9ffa/bin/uautomizer-QkZJyEgLgS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9d38eb9d6ba70070fe3ced1aec90f1c3400cc1f89786e1bd625a19020cb0869f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 03:20:15,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:20:15,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:20:15,375 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:20:15,375 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:20:15,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:20:15,382 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:20:15,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:20:15,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:20:15,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:20:15,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:20:15,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:20:15,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:20:15,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:20:15,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:20:15,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:20:15,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:20:15,408 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:20:15,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:20:15,416 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:20:15,418 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:20:15,420 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:20:15,422 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:20:15,423 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:20:15,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:20:15,434 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:20:15,434 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:20:15,436 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:20:15,437 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:20:15,438 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:20:15,438 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:20:15,439 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:20:15,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:20:15,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:20:15,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:20:15,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:20:15,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:20:15,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:20:15,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:20:15,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:20:15,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:20:15,451 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40004b0a-51d9-4236-ac98-4232c94c9ffa/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-23 03:20:15,495 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:20:15,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:20:15,496 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:20:15,496 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:20:15,497 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:20:15,497 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:20:15,498 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:20:15,498 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:20:15,498 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:20:15,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:20:15,500 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:20:15,500 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 03:20:15,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:20:15,501 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:20:15,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:20:15,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:20:15,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:20:15,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:20:15,502 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 03:20:15,502 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:20:15,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:20:15,502 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:20:15,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:20:15,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:20:15,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:20:15,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:20:15,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:20:15,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:20:15,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:20:15,505 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:20:15,505 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:20:15,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:20:15,506 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:20:15,506 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:20:15,506 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:20:15,507 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:20:15,507 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_40004b0a-51d9-4236-ac98-4232c94c9ffa/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40004b0a-51d9-4236-ac98-4232c94c9ffa/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d38eb9d6ba70070fe3ced1aec90f1c3400cc1f89786e1bd625a19020cb0869f [2022-11-23 03:20:15,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:20:15,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:20:15,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:20:15,851 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:20:15,851 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:20:15,863 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40004b0a-51d9-4236-ac98-4232c94c9ffa/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2022-11-23 03:20:18,923 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:20:19,097 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:20:19,098 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40004b0a-51d9-4236-ac98-4232c94c9ffa/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2022-11-23 03:20:19,105 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40004b0a-51d9-4236-ac98-4232c94c9ffa/bin/uautomizer-QkZJyEgLgS/data/826920a06/ca7e54f0392e49acaa560411943ab98c/FLAG7f7077724 [2022-11-23 03:20:19,122 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40004b0a-51d9-4236-ac98-4232c94c9ffa/bin/uautomizer-QkZJyEgLgS/data/826920a06/ca7e54f0392e49acaa560411943ab98c [2022-11-23 03:20:19,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:20:19,126 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:20:19,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:20:19,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:20:19,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:20:19,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:20:19" (1/1) ... [2022-11-23 03:20:19,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@305ea7f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:19, skipping insertion in model container [2022-11-23 03:20:19,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:20:19" (1/1) ... [2022-11-23 03:20:19,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:20:19,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:20:19,358 WARN L237 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_40004b0a-51d9-4236-ac98-4232c94c9ffa/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c[2533,2546] [2022-11-23 03:20:19,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:20:19,376 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:20:19,401 WARN L237 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_40004b0a-51d9-4236-ac98-4232c94c9ffa/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c[2533,2546] [2022-11-23 03:20:19,407 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:20:19,420 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:20:19,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:19 WrapperNode [2022-11-23 03:20:19,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:20:19,421 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:20:19,422 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:20:19,422 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:20:19,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:19" (1/1) ... [2022-11-23 03:20:19,456 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:19" (1/1) ... [2022-11-23 03:20:19,503 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 13, calls inlined = 19, statements flattened = 303 [2022-11-23 03:20:19,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:20:19,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:20:19,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:20:19,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:20:19,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:19" (1/1) ... [2022-11-23 03:20:19,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:19" (1/1) ... [2022-11-23 03:20:19,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:19" (1/1) ... [2022-11-23 03:20:19,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:19" (1/1) ... [2022-11-23 03:20:19,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:19" (1/1) ... [2022-11-23 03:20:19,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:19" (1/1) ... [2022-11-23 03:20:19,573 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:19" (1/1) ... [2022-11-23 03:20:19,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:19" (1/1) ... [2022-11-23 03:20:19,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:20:19,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:20:19,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:20:19,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:20:19,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:19" (1/1) ... [2022-11-23 03:20:19,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:20:19,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40004b0a-51d9-4236-ac98-4232c94c9ffa/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:20:19,636 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40004b0a-51d9-4236-ac98-4232c94c9ffa/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:20:19,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40004b0a-51d9-4236-ac98-4232c94c9ffa/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:20:19,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:20:19,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 03:20:19,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 03:20:19,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 03:20:19,697 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-23 03:20:19,697 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-23 03:20:19,698 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-23 03:20:19,698 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-23 03:20:19,698 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-23 03:20:19,698 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-23 03:20:19,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:20:19,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 03:20:19,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 03:20:19,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 03:20:19,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:20:19,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:20:19,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 03:20:19,701 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 03:20:19,864 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:20:19,866 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:20:20,497 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:20:21,598 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:20:21,598 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-23 03:20:21,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:20:21 BoogieIcfgContainer [2022-11-23 03:20:21,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:20:21,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:20:21,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:20:21,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:20:21,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:20:19" (1/3) ... [2022-11-23 03:20:21,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a957c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:20:21, skipping insertion in model container [2022-11-23 03:20:21,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:19" (2/3) ... [2022-11-23 03:20:21,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a957c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:20:21, skipping insertion in model container [2022-11-23 03:20:21,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:20:21" (3/3) ... [2022-11-23 03:20:21,609 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-mts.wvr.c [2022-11-23 03:20:21,618 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 03:20:21,629 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:20:21,629 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2022-11-23 03:20:21,630 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 03:20:21,954 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-23 03:20:21,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 308 places, 321 transitions, 666 flow [2022-11-23 03:20:22,188 INFO L130 PetriNetUnfolder]: 23/318 cut-off events. [2022-11-23 03:20:22,188 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-23 03:20:22,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 318 events. 23/318 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 790 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 250. Up to 2 conditions per place. [2022-11-23 03:20:22,201 INFO L82 GeneralOperation]: Start removeDead. Operand has 308 places, 321 transitions, 666 flow [2022-11-23 03:20:22,219 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 283 places, 294 transitions, 606 flow [2022-11-23 03:20:22,223 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 03:20:22,250 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 283 places, 294 transitions, 606 flow [2022-11-23 03:20:22,253 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 283 places, 294 transitions, 606 flow [2022-11-23 03:20:22,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 283 places, 294 transitions, 606 flow [2022-11-23 03:20:22,410 INFO L130 PetriNetUnfolder]: 21/294 cut-off events. [2022-11-23 03:20:22,411 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-23 03:20:22,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 294 events. 21/294 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 700 event pairs, 0 based on Foata normal form. 0/232 useless extension candidates. Maximal degree in co-relation 250. Up to 2 conditions per place. [2022-11-23 03:20:22,427 INFO L119 LiptonReduction]: Number of co-enabled transitions 24672 [2022-11-23 03:21:09,870 INFO L134 LiptonReduction]: Checked pairs total: 29194 [2022-11-23 03:21:09,870 INFO L136 LiptonReduction]: Total number of compositions: 374 [2022-11-23 03:21:09,887 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:21:09,895 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@124b762a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:21:09,895 INFO L358 AbstractCegarLoop]: Starting to check reachability of 81 error locations. [2022-11-23 03:21:09,898 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-23 03:21:09,898 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 03:21:09,898 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:21:09,899 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-23 03:21:09,900 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-11-23 03:21:09,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:21:09,906 INFO L85 PathProgramCache]: Analyzing trace with hash 52395, now seen corresponding path program 1 times [2022-11-23 03:21:09,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:21:09,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176016523] [2022-11-23 03:21:09,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:21:09,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:21:10,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:21:10,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:21:10,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:21:10,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176016523] [2022-11-23 03:21:10,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176016523] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:21:10,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:21:10,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 03:21:10,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529783737] [2022-11-23 03:21:10,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:21:10,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:21:10,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:21:10,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:21:10,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:21:10,398 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 695 [2022-11-23 03:21:10,403 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 71 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 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) [2022-11-23 03:21:10,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:21:10,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 695 [2022-11-23 03:21:10,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:21:23,300 INFO L130 PetriNetUnfolder]: 33955/42747 cut-off events. [2022-11-23 03:21:23,300 INFO L131 PetriNetUnfolder]: For 602/602 co-relation queries the response was YES. [2022-11-23 03:21:23,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86315 conditions, 42747 events. 33955/42747 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 4236. Compared 238422 event pairs, 18402 based on Foata normal form. 0/11332 useless extension candidates. Maximal degree in co-relation 40367. Up to 21263 conditions per place. [2022-11-23 03:21:23,590 INFO L137 encePairwiseOnDemand]: 677/695 looper letters, 103 selfloop transitions, 2 changer transitions 0/108 dead transitions. [2022-11-23 03:21:23,590 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 108 transitions, 462 flow [2022-11-23 03:21:23,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:21:23,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:21:23,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 987 transitions. [2022-11-23 03:21:23,617 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47338129496402875 [2022-11-23 03:21:23,618 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 987 transitions. [2022-11-23 03:21:23,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 987 transitions. [2022-11-23 03:21:23,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:21:23,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 987 transitions. [2022-11-23 03:21:23,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 329.0) internal successors, (987), 3 states have internal predecessors, (987), 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) [2022-11-23 03:21:23,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 695.0) internal successors, (2780), 4 states have internal predecessors, (2780), 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) [2022-11-23 03:21:23,651 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 695.0) internal successors, (2780), 4 states have internal predecessors, (2780), 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) [2022-11-23 03:21:23,653 INFO L175 Difference]: Start difference. First operand has 75 places, 71 transitions, 160 flow. Second operand 3 states and 987 transitions. [2022-11-23 03:21:23,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 108 transitions, 462 flow [2022-11-23 03:21:23,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 108 transitions, 438 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-23 03:21:23,726 INFO L231 Difference]: Finished difference. Result has 58 places, 58 transitions, 134 flow [2022-11-23 03:21:23,728 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=695, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=58, PETRI_TRANSITIONS=58} [2022-11-23 03:21:23,733 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, -17 predicate places. [2022-11-23 03:21:23,733 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 58 transitions, 134 flow [2022-11-23 03:21:23,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 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) [2022-11-23 03:21:23,735 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:21:23,736 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-23 03:21:23,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 03:21:23,739 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-11-23 03:21:23,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:21:23,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1626668, now seen corresponding path program 1 times [2022-11-23 03:21:23,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:21:23,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562783479] [2022-11-23 03:21:23,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:21:23,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:21:23,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:21:23,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:21:23,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:21:23,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562783479] [2022-11-23 03:21:23,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562783479] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:21:23,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699911073] [2022-11-23 03:21:23,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:21:23,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:21:23,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40004b0a-51d9-4236-ac98-4232c94c9ffa/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:21:23,873 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40004b0a-51d9-4236-ac98-4232c94c9ffa/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:21:23,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40004b0a-51d9-4236-ac98-4232c94c9ffa/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 03:21:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:21:24,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 03:21:24,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:21:24,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:21:24,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:21:24,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:21:24,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699911073] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:21:24,267 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:21:24,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-23 03:21:24,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790435225] [2022-11-23 03:21:24,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:21:24,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:21:24,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:21:24,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:21:24,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:21:24,316 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 695 [2022-11-23 03:21:24,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 58 transitions, 134 flow. Second operand has 7 states, 7 states have (on average 285.14285714285717) internal successors, (1996), 7 states have internal predecessors, (1996), 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) [2022-11-23 03:21:24,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:21:24,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 695 [2022-11-23 03:21:24,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand