./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b164688d-7059-4d60-8f0f-fd69ea6fb8dc/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b164688d-7059-4d60-8f0f-fd69ea6fb8dc/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b164688d-7059-4d60-8f0f-fd69ea6fb8dc/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b164688d-7059-4d60-8f0f-fd69ea6fb8dc/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b164688d-7059-4d60-8f0f-fd69ea6fb8dc/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b164688d-7059-4d60-8f0f-fd69ea6fb8dc/bin/uautomizer-vX5HgA9Q3a --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 675e4a71573eb5ca191c78078c954ea41743d39a46f0fa586376ee48e7dc4190 --- 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-b5237d8 [2022-11-21 17:02:03,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:02:03,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:02:03,375 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:02:03,380 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:02:03,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:02:03,387 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:02:03,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:02:03,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:02:03,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:02:03,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:02:03,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:02:03,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:02:03,414 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:02:03,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:02:03,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:02:03,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:02:03,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:02:03,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:02:03,432 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:02:03,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:02:03,437 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:02:03,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:02:03,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:02:03,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:02:03,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:02:03,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:02:03,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:02:03,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:02:03,460 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:02:03,461 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:02:03,462 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:02:03,465 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:02:03,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:02:03,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:02:03,471 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:02:03,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:02:03,472 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:02:03,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:02:03,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:02:03,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:02:03,497 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b164688d-7059-4d60-8f0f-fd69ea6fb8dc/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 17:02:03,574 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:02:03,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:02:03,575 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:02:03,576 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:02:03,577 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:02:03,577 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:02:03,578 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:02:03,578 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:02:03,578 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:02:03,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:02:03,580 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:02:03,580 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 17:02:03,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:02:03,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:02:03,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:02:03,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:02:03,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:02:03,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:02:03,582 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 17:02:03,582 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:02:03,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:02:03,582 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:02:03,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:02:03,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:02:03,583 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:02:03,583 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:02:03,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:02:03,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:02:03,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:02:03,584 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:02:03,585 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:02:03,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:02:03,585 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:02:03,586 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:02:03,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:02:03,586 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_b164688d-7059-4d60-8f0f-fd69ea6fb8dc/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b164688d-7059-4d60-8f0f-fd69ea6fb8dc/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 675e4a71573eb5ca191c78078c954ea41743d39a46f0fa586376ee48e7dc4190 [2022-11-21 17:02:03,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:02:04,018 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:02:04,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:02:04,023 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:02:04,024 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:02:04,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b164688d-7059-4d60-8f0f-fd69ea6fb8dc/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2022-11-21 17:02:07,732 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:02:08,090 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:02:08,092 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b164688d-7059-4d60-8f0f-fd69ea6fb8dc/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2022-11-21 17:02:08,109 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b164688d-7059-4d60-8f0f-fd69ea6fb8dc/bin/uautomizer-vX5HgA9Q3a/data/5692907d7/20379127adec425a8fcb4bafd74f8040/FLAG4a2b92c64 [2022-11-21 17:02:08,134 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b164688d-7059-4d60-8f0f-fd69ea6fb8dc/bin/uautomizer-vX5HgA9Q3a/data/5692907d7/20379127adec425a8fcb4bafd74f8040 [2022-11-21 17:02:08,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:02:08,144 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:02:08,152 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:02:08,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:02:08,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:02:08,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:02:08" (1/1) ... [2022-11-21 17:02:08,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d392ea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:08, skipping insertion in model container [2022-11-21 17:02:08,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:02:08" (1/1) ... [2022-11-21 17:02:08,171 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:02:08,226 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:02:08,523 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_b164688d-7059-4d60-8f0f-fd69ea6fb8dc/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c[4351,4364] [2022-11-21 17:02:08,534 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:02:08,547 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:02:08,603 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_b164688d-7059-4d60-8f0f-fd69ea6fb8dc/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c[4351,4364] [2022-11-21 17:02:08,610 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:02:08,629 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:02:08,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:08 WrapperNode [2022-11-21 17:02:08,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:02:08,632 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:02:08,632 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:02:08,633 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:02:08,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:08" (1/1) ... [2022-11-21 17:02:08,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:08" (1/1) ... [2022-11-21 17:02:08,702 INFO L138 Inliner]: procedures = 27, calls = 87, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 398 [2022-11-21 17:02:08,703 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:02:08,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:02:08,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:02:08,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:02:08,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:08" (1/1) ... [2022-11-21 17:02:08,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:08" (1/1) ... [2022-11-21 17:02:08,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:08" (1/1) ... [2022-11-21 17:02:08,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:08" (1/1) ... [2022-11-21 17:02:08,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:08" (1/1) ... [2022-11-21 17:02:08,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:08" (1/1) ... [2022-11-21 17:02:08,752 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:08" (1/1) ... [2022-11-21 17:02:08,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:08" (1/1) ... [2022-11-21 17:02:08,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:02:08,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:02:08,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:02:08,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:02:08,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:08" (1/1) ... [2022-11-21 17:02:08,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:02:08,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b164688d-7059-4d60-8f0f-fd69ea6fb8dc/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:02:08,805 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b164688d-7059-4d60-8f0f-fd69ea6fb8dc/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:02:08,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b164688d-7059-4d60-8f0f-fd69ea6fb8dc/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:02:08,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:02:08,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 17:02:08,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 17:02:08,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 17:02:08,897 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 17:02:08,899 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 17:02:08,899 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 17:02:08,899 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 17:02:08,900 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-21 17:02:08,900 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-21 17:02:08,900 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-21 17:02:08,900 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-21 17:02:08,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:02:08,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 17:02:08,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 17:02:08,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 17:02:08,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:02:08,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:02:08,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 17:02:08,904 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 17:02:09,131 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:02:09,134 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:02:10,148 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:02:10,945 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:02:10,972 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-21 17:02:10,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:02:10 BoogieIcfgContainer [2022-11-21 17:02:10,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:02:10,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:02:10,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:02:10,985 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:02:10,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:02:08" (1/3) ... [2022-11-21 17:02:10,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45451d24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:02:10, skipping insertion in model container [2022-11-21 17:02:10,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:02:08" (2/3) ... [2022-11-21 17:02:10,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45451d24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:02:10, skipping insertion in model container [2022-11-21 17:02:10,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:02:10" (3/3) ... [2022-11-21 17:02:10,992 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series.wvr.c [2022-11-21 17:02:11,015 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 17:02:11,029 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:02:11,030 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-21 17:02:11,030 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 17:02:11,284 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-21 17:02:11,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 295 places, 304 transitions, 640 flow [2022-11-21 17:02:11,516 INFO L130 PetriNetUnfolder]: 22/300 cut-off events. [2022-11-21 17:02:11,516 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-21 17:02:11,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 300 events. 22/300 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 303 event pairs, 0 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 254. Up to 2 conditions per place. [2022-11-21 17:02:11,528 INFO L82 GeneralOperation]: Start removeDead. Operand has 295 places, 304 transitions, 640 flow [2022-11-21 17:02:11,537 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 269 places, 277 transitions, 575 flow [2022-11-21 17:02:11,549 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:02:11,557 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;@63f8bb5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:02:11,557 INFO L358 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2022-11-21 17:02:11,578 INFO L130 PetriNetUnfolder]: 3/83 cut-off events. [2022-11-21 17:02:11,578 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 17:02:11,579 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:02:11,580 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:11,580 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-11-21 17:02:11,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:11,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1762565349, now seen corresponding path program 1 times [2022-11-21 17:02:11,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:11,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258902610] [2022-11-21 17:02:11,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:11,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:12,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:12,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:12,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258902610] [2022-11-21 17:02:12,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258902610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:12,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:02:12,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:02:12,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198978937] [2022-11-21 17:02:12,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:12,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:02:12,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:12,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:02:12,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:02:12,410 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 304 [2022-11-21 17:02:12,425 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 277 transitions, 575 flow. Second operand has 4 states, 4 states have (on average 213.5) internal successors, (854), 4 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) [2022-11-21 17:02:12,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:02:12,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 304 [2022-11-21 17:02:12,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:02:24,655 INFO L130 PetriNetUnfolder]: 16171/24213 cut-off events. [2022-11-21 17:02:24,655 INFO L131 PetriNetUnfolder]: For 4692/4694 co-relation queries the response was YES. [2022-11-21 17:02:24,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46953 conditions, 24213 events. 16171/24213 cut-off events. For 4692/4694 co-relation queries the response was YES. Maximal size of possible extension queue 1419. Compared 166303 event pairs, 9734 based on Foata normal form. 4428/15035 useless extension candidates. Maximal degree in co-relation 22925. Up to 10183 conditions per place. [2022-11-21 17:02:25,018 INFO L137 encePairwiseOnDemand]: 259/304 looper letters, 104 selfloop transitions, 14 changer transitions 7/306 dead transitions. [2022-11-21 17:02:25,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 306 transitions, 890 flow [2022-11-21 17:02:25,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:02:25,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:02:25,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1228 transitions. [2022-11-21 17:02:25,050 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8078947368421052 [2022-11-21 17:02:25,051 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1228 transitions. [2022-11-21 17:02:25,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1228 transitions. [2022-11-21 17:02:25,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:02:25,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1228 transitions. [2022-11-21 17:02:25,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 245.6) internal successors, (1228), 5 states have internal predecessors, (1228), 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) [2022-11-21 17:02:25,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 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) [2022-11-21 17:02:25,092 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 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) [2022-11-21 17:02:25,094 INFO L175 Difference]: Start difference. First operand has 269 places, 277 transitions, 575 flow. Second operand 5 states and 1228 transitions. [2022-11-21 17:02:25,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 306 transitions, 890 flow [2022-11-21 17:02:25,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 306 transitions, 864 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-21 17:02:25,132 INFO L231 Difference]: Finished difference. Result has 258 places, 256 transitions, 602 flow [2022-11-21 17:02:25,135 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=602, PETRI_PLACES=258, PETRI_TRANSITIONS=256} [2022-11-21 17:02:25,143 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, -11 predicate places. [2022-11-21 17:02:25,143 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 256 transitions, 602 flow [2022-11-21 17:02:25,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 213.5) internal successors, (854), 4 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) [2022-11-21 17:02:25,145 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:02:25,145 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:25,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:02:25,146 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-11-21 17:02:25,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:25,147 INFO L85 PathProgramCache]: Analyzing trace with hash -54071210, now seen corresponding path program 1 times [2022-11-21 17:02:25,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:25,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469458383] [2022-11-21 17:02:25,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:25,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:25,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:25,411 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:25,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:25,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469458383] [2022-11-21 17:02:25,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469458383] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:02:25,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504778366] [2022-11-21 17:02:25,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:25,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:02:25,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b164688d-7059-4d60-8f0f-fd69ea6fb8dc/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:02:25,417 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b164688d-7059-4d60-8f0f-fd69ea6fb8dc/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:02:25,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b164688d-7059-4d60-8f0f-fd69ea6fb8dc/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 17:02:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:25,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 17:02:25,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:02:25,811 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:25,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:02:25,888 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:25,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504778366] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:02:25,889 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:02:25,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-21 17:02:25,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406064483] [2022-11-21 17:02:25,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:02:25,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 17:02:25,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:25,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 17:02:25,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:02:25,897 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 304 [2022-11-21 17:02:25,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 256 transitions, 602 flow. Second operand has 12 states, 12 states have (on average 214.66666666666666) internal successors, (2576), 12 states have internal predecessors, (2576), 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) [2022-11-21 17:02:25,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:02:25,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 304 [2022-11-21 17:02:25,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:02:47,650 INFO L130 PetriNetUnfolder]: 40426/60358 cut-off events. [2022-11-21 17:02:47,650 INFO L131 PetriNetUnfolder]: For 3543/3548 co-relation queries the response was YES. [2022-11-21 17:02:47,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113591 conditions, 60358 events. 40426/60358 cut-off events. For 3543/3548 co-relation queries the response was YES. Maximal size of possible extension queue 1563. Compared 435503 event pairs, 24335 based on Foata normal form. 9/26387 useless extension candidates. Maximal degree in co-relation 90500. Up to 10174 conditions per place. [2022-11-21 17:02:48,285 INFO L137 encePairwiseOnDemand]: 281/304 looper letters, 224 selfloop transitions, 62 changer transitions 0/467 dead transitions. [2022-11-21 17:02:48,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 467 transitions, 1706 flow [2022-11-21 17:02:48,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 17:02:48,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 17:02:48,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4111 transitions. [2022-11-21 17:02:48,298 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7512792397660819 [2022-11-21 17:02:48,299 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4111 transitions. [2022-11-21 17:02:48,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4111 transitions. [2022-11-21 17:02:48,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:02:48,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4111 transitions. [2022-11-21 17:02:48,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 228.38888888888889) internal successors, (4111), 18 states have internal predecessors, (4111), 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) [2022-11-21 17:02:48,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 304.0) internal successors, (5776), 19 states have internal predecessors, (5776), 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) [2022-11-21 17:02:48,332 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 304.0) internal successors, (5776), 19 states have internal predecessors, (5776), 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) [2022-11-21 17:02:48,332 INFO L175 Difference]: Start difference. First operand has 258 places, 256 transitions, 602 flow. Second operand 18 states and 4111 transitions. [2022-11-21 17:02:48,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 467 transitions, 1706 flow [2022-11-21 17:02:48,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 467 transitions, 1698 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:02:48,351 INFO L231 Difference]: Finished difference. Result has 271 places, 298 transitions, 964 flow [2022-11-21 17:02:48,352 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=964, PETRI_PLACES=271, PETRI_TRANSITIONS=298} [2022-11-21 17:02:48,353 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 2 predicate places. [2022-11-21 17:02:48,353 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 298 transitions, 964 flow [2022-11-21 17:02:48,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 214.66666666666666) internal successors, (2576), 12 states have internal predecessors, (2576), 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) [2022-11-21 17:02:48,357 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:02:48,358 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:48,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b164688d-7059-4d60-8f0f-fd69ea6fb8dc/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 17:02:48,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b164688d-7059-4d60-8f0f-fd69ea6fb8dc/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:02:48,566 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-11-21 17:02:48,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:48,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1676206516, now seen corresponding path program 1 times [2022-11-21 17:02:48,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:48,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850242048] [2022-11-21 17:02:48,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:48,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:48,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:48,770 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:48,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:48,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850242048] [2022-11-21 17:02:48,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850242048] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:02:48,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803192428] [2022-11-21 17:02:48,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:48,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:02:48,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b164688d-7059-4d60-8f0f-fd69ea6fb8dc/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:02:48,773 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b164688d-7059-4d60-8f0f-fd69ea6fb8dc/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:02:48,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b164688d-7059-4d60-8f0f-fd69ea6fb8dc/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 17:02:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:48,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 17:02:48,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:02:49,078 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:49,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:02:49,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803192428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:49,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:02:49,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 17:02:49,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688586580] [2022-11-21 17:02:49,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:49,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:02:49,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:49,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:02:49,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:02:49,084 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 304 [2022-11-21 17:02:49,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 298 transitions, 964 flow. Second operand has 6 states, 6 states have (on average 214.33333333333334) internal successors, (1286), 6 states have internal predecessors, (1286), 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) [2022-11-21 17:02:49,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:02:49,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 304 [2022-11-21 17:02:49,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand