./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 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_ab91bd62-c171-4f3f-b0bf-90a242fffb95/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab91bd62-c171-4f3f-b0bf-90a242fffb95/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_ab91bd62-c171-4f3f-b0bf-90a242fffb95/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab91bd62-c171-4f3f-b0bf-90a242fffb95/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab91bd62-c171-4f3f-b0bf-90a242fffb95/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_ab91bd62-c171-4f3f-b0bf-90a242fffb95/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 f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc --- 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 09:02:29,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 09:02:29,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 09:02:29,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 09:02:29,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 09:02:29,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 09:02:29,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 09:02:29,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 09:02:29,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 09:02:29,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 09:02:29,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 09:02:29,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 09:02:29,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 09:02:29,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 09:02:29,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 09:02:29,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 09:02:29,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 09:02:29,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 09:02:29,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 09:02:29,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 09:02:29,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 09:02:29,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 09:02:29,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 09:02:29,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 09:02:29,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 09:02:29,543 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 09:02:29,544 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 09:02:29,545 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 09:02:29,545 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 09:02:29,546 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 09:02:29,547 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 09:02:29,548 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 09:02:29,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 09:02:29,550 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 09:02:29,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 09:02:29,551 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 09:02:29,552 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 09:02:29,553 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 09:02:29,553 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 09:02:29,554 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 09:02:29,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 09:02:29,556 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab91bd62-c171-4f3f-b0bf-90a242fffb95/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 09:02:29,577 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 09:02:29,577 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 09:02:29,578 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 09:02:29,578 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 09:02:29,579 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 09:02:29,579 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 09:02:29,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 09:02:29,580 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 09:02:29,580 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 09:02:29,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 09:02:29,581 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 09:02:29,581 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 09:02:29,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 09:02:29,582 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 09:02:29,582 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 09:02:29,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 09:02:29,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 09:02:29,583 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 09:02:29,584 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 09:02:29,584 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 09:02:29,584 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 09:02:29,584 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 09:02:29,585 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 09:02:29,585 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 09:02:29,585 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 09:02:29,586 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 09:02:29,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:02:29,586 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 09:02:29,587 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 09:02:29,587 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 09:02:29,587 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 09:02:29,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 09:02:29,588 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 09:02:29,588 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 09:02:29,588 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 09:02:29,588 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_ab91bd62-c171-4f3f-b0bf-90a242fffb95/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab91bd62-c171-4f3f-b0bf-90a242fffb95/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc [2022-11-21 09:02:29,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 09:02:29,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 09:02:29,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 09:02:29,904 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 09:02:29,904 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 09:02:29,905 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab91bd62-c171-4f3f-b0bf-90a242fffb95/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2022-11-21 09:02:33,014 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 09:02:33,346 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 09:02:33,347 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab91bd62-c171-4f3f-b0bf-90a242fffb95/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2022-11-21 09:02:33,357 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab91bd62-c171-4f3f-b0bf-90a242fffb95/bin/uautomizer-vX5HgA9Q3a/data/ceb437ded/5a8f719add6a4d21ac8963aaff187517/FLAG88a9a783e [2022-11-21 09:02:33,378 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab91bd62-c171-4f3f-b0bf-90a242fffb95/bin/uautomizer-vX5HgA9Q3a/data/ceb437ded/5a8f719add6a4d21ac8963aaff187517 [2022-11-21 09:02:33,384 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 09:02:33,386 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 09:02:33,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 09:02:33,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 09:02:33,396 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 09:02:33,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:02:33" (1/1) ... [2022-11-21 09:02:33,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c6858fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:33, skipping insertion in model container [2022-11-21 09:02:33,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:02:33" (1/1) ... [2022-11-21 09:02:33,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 09:02:33,442 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 09:02:33,673 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_ab91bd62-c171-4f3f-b0bf-90a242fffb95/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c[4232,4245] [2022-11-21 09:02:33,681 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:02:33,701 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 09:02:33,733 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_ab91bd62-c171-4f3f-b0bf-90a242fffb95/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c[4232,4245] [2022-11-21 09:02:33,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:02:33,754 INFO L208 MainTranslator]: Completed translation [2022-11-21 09:02:33,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:33 WrapperNode [2022-11-21 09:02:33,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 09:02:33,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 09:02:33,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 09:02:33,755 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 09:02:33,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:33" (1/1) ... [2022-11-21 09:02:33,770 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:33" (1/1) ... [2022-11-21 09:02:33,805 INFO L138 Inliner]: procedures = 27, calls = 83, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 394 [2022-11-21 09:02:33,806 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 09:02:33,807 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 09:02:33,807 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 09:02:33,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 09:02:33,818 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:33" (1/1) ... [2022-11-21 09:02:33,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:33" (1/1) ... [2022-11-21 09:02:33,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:33" (1/1) ... [2022-11-21 09:02:33,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:33" (1/1) ... [2022-11-21 09:02:33,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:33" (1/1) ... [2022-11-21 09:02:33,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:33" (1/1) ... [2022-11-21 09:02:33,844 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:33" (1/1) ... [2022-11-21 09:02:33,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:33" (1/1) ... [2022-11-21 09:02:33,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 09:02:33,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 09:02:33,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 09:02:33,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 09:02:33,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:33" (1/1) ... [2022-11-21 09:02:33,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:02:33,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab91bd62-c171-4f3f-b0bf-90a242fffb95/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:02:33,893 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab91bd62-c171-4f3f-b0bf-90a242fffb95/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 09:02:33,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab91bd62-c171-4f3f-b0bf-90a242fffb95/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 09:02:33,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 09:02:33,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 09:02:33,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 09:02:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 09:02:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 09:02:33,934 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 09:02:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 09:02:33,934 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 09:02:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-21 09:02:33,935 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-21 09:02:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-21 09:02:33,935 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-21 09:02:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 09:02:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 09:02:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 09:02:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 09:02:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 09:02:33,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 09:02:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 09:02:33,938 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 09:02:34,062 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 09:02:34,065 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 09:02:34,972 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 09:02:35,673 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 09:02:35,673 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-21 09:02:35,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:02:35 BoogieIcfgContainer [2022-11-21 09:02:35,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 09:02:35,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 09:02:35,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 09:02:35,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 09:02:35,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:02:33" (1/3) ... [2022-11-21 09:02:35,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e6f7d5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:02:35, skipping insertion in model container [2022-11-21 09:02:35,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:33" (2/3) ... [2022-11-21 09:02:35,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e6f7d5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:02:35, skipping insertion in model container [2022-11-21 09:02:35,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:02:35" (3/3) ... [2022-11-21 09:02:35,688 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series2.wvr.c [2022-11-21 09:02:35,699 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 09:02:35,710 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 09:02:35,710 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-21 09:02:35,710 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 09:02:35,936 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-21 09:02:35,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 302 transitions, 636 flow [2022-11-21 09:02:36,146 INFO L130 PetriNetUnfolder]: 22/298 cut-off events. [2022-11-21 09:02:36,147 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-21 09:02:36,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 298 events. 22/298 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 301 event pairs, 0 based on Foata normal form. 0/244 useless extension candidates. Maximal degree in co-relation 252. Up to 2 conditions per place. [2022-11-21 09:02:36,153 INFO L82 GeneralOperation]: Start removeDead. Operand has 293 places, 302 transitions, 636 flow [2022-11-21 09:02:36,160 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 267 places, 275 transitions, 571 flow [2022-11-21 09:02:36,171 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 09:02:36,181 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;@64919d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 09:02:36,182 INFO L358 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2022-11-21 09:02:36,210 INFO L130 PetriNetUnfolder]: 3/82 cut-off events. [2022-11-21 09:02:36,210 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 09:02:36,210 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:02:36,211 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 09:02:36,211 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 09:02:36,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:36,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1890265644, now seen corresponding path program 1 times [2022-11-21 09:02:36,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:02:36,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290731687] [2022-11-21 09:02:36,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:36,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:02:36,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:36,760 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 09:02:36,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:02:36,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290731687] [2022-11-21 09:02:36,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290731687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:02:36,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:02:36,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:02:36,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906227550] [2022-11-21 09:02:36,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:02:36,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:02:36,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:02:36,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:02:36,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:02:36,825 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 302 [2022-11-21 09:02:36,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 275 transitions, 571 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 09:02:36,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:02:36,870 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 302 [2022-11-21 09:02:36,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:02:44,774 INFO L130 PetriNetUnfolder]: 13803/19665 cut-off events. [2022-11-21 09:02:44,775 INFO L131 PetriNetUnfolder]: For 3942/3948 co-relation queries the response was YES. [2022-11-21 09:02:44,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38277 conditions, 19665 events. 13803/19665 cut-off events. For 3942/3948 co-relation queries the response was YES. Maximal size of possible extension queue 993. Compared 115227 event pairs, 6594 based on Foata normal form. 3470/10639 useless extension candidates. Maximal degree in co-relation 18677. Up to 8379 conditions per place. [2022-11-21 09:02:45,034 INFO L137 encePairwiseOnDemand]: 257/302 looper letters, 100 selfloop transitions, 14 changer transitions 7/302 dead transitions. [2022-11-21 09:02:45,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 302 transitions, 874 flow [2022-11-21 09:02:45,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 09:02:45,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 09:02:45,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1224 transitions. [2022-11-21 09:02:45,053 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8105960264900662 [2022-11-21 09:02:45,054 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1224 transitions. [2022-11-21 09:02:45,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1224 transitions. [2022-11-21 09:02:45,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:02:45,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1224 transitions. [2022-11-21 09:02:45,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 244.8) internal successors, (1224), 5 states have internal predecessors, (1224), 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 09:02:45,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 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 09:02:45,079 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 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 09:02:45,081 INFO L175 Difference]: Start difference. First operand has 267 places, 275 transitions, 571 flow. Second operand 5 states and 1224 transitions. [2022-11-21 09:02:45,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 302 transitions, 874 flow [2022-11-21 09:02:45,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 302 transitions, 848 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-21 09:02:45,114 INFO L231 Difference]: Finished difference. Result has 256 places, 254 transitions, 598 flow [2022-11-21 09:02:45,117 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=598, PETRI_PLACES=256, PETRI_TRANSITIONS=254} [2022-11-21 09:02:45,120 INFO L288 CegarLoopForPetriNet]: 267 programPoint places, -11 predicate places. [2022-11-21 09:02:45,121 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 254 transitions, 598 flow [2022-11-21 09:02:45,121 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 09:02:45,122 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:02:45,122 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 09:02:45,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 09:02:45,123 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 09:02:45,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:45,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1530625239, now seen corresponding path program 1 times [2022-11-21 09:02:45,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:02:45,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723434928] [2022-11-21 09:02:45,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:45,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:02:45,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:45,343 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 09:02:45,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:02:45,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723434928] [2022-11-21 09:02:45,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723434928] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:02:45,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438615586] [2022-11-21 09:02:45,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:45,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:02:45,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab91bd62-c171-4f3f-b0bf-90a242fffb95/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:02:45,354 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab91bd62-c171-4f3f-b0bf-90a242fffb95/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:02:45,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab91bd62-c171-4f3f-b0bf-90a242fffb95/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 09:02:45,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:45,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 09:02:45,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:02:45,712 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 09:02:45,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:02:45,779 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 09:02:45,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438615586] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:02:45,779 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 09:02:45,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-21 09:02:45,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983236153] [2022-11-21 09:02:45,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 09:02:45,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 09:02:45,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:02:45,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 09:02:45,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 09:02:45,789 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 302 [2022-11-21 09:02:45,794 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 254 transitions, 598 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 09:02:45,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:02:45,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 302 [2022-11-21 09:02:45,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:03:00,060 INFO L130 PetriNetUnfolder]: 34506/48988 cut-off events. [2022-11-21 09:03:00,060 INFO L131 PetriNetUnfolder]: For 3053/3068 co-relation queries the response was YES. [2022-11-21 09:03:00,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92446 conditions, 48988 events. 34506/48988 cut-off events. For 3053/3068 co-relation queries the response was YES. Maximal size of possible extension queue 1158. Compared 302906 event pairs, 16485 based on Foata normal form. 9/17792 useless extension candidates. Maximal degree in co-relation 73584. Up to 8370 conditions per place. [2022-11-21 09:03:00,547 INFO L137 encePairwiseOnDemand]: 279/302 looper letters, 214 selfloop transitions, 62 changer transitions 0/457 dead transitions. [2022-11-21 09:03:00,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 457 transitions, 1666 flow [2022-11-21 09:03:00,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 09:03:00,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 09:03:00,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4101 transitions. [2022-11-21 09:03:00,558 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7544150110375276 [2022-11-21 09:03:00,559 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4101 transitions. [2022-11-21 09:03:00,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4101 transitions. [2022-11-21 09:03:00,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:03:00,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4101 transitions. [2022-11-21 09:03:00,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 227.83333333333334) internal successors, (4101), 18 states have internal predecessors, (4101), 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 09:03:00,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 302.0) internal successors, (5738), 19 states have internal predecessors, (5738), 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 09:03:00,587 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 302.0) internal successors, (5738), 19 states have internal predecessors, (5738), 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 09:03:00,588 INFO L175 Difference]: Start difference. First operand has 256 places, 254 transitions, 598 flow. Second operand 18 states and 4101 transitions. [2022-11-21 09:03:00,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 457 transitions, 1666 flow [2022-11-21 09:03:00,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 457 transitions, 1658 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 09:03:00,603 INFO L231 Difference]: Finished difference. Result has 269 places, 296 transitions, 960 flow [2022-11-21 09:03:00,604 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=960, PETRI_PLACES=269, PETRI_TRANSITIONS=296} [2022-11-21 09:03:00,605 INFO L288 CegarLoopForPetriNet]: 267 programPoint places, 2 predicate places. [2022-11-21 09:03:00,605 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 296 transitions, 960 flow [2022-11-21 09:03:00,609 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 09:03:00,610 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:03:00,611 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 09:03:00,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab91bd62-c171-4f3f-b0bf-90a242fffb95/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-21 09:03:00,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab91bd62-c171-4f3f-b0bf-90a242fffb95/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-21 09:03:00,817 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 09:03:00,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:00,817 INFO L85 PathProgramCache]: Analyzing trace with hash -204741029, now seen corresponding path program 1 times [2022-11-21 09:03:00,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:00,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680770228] [2022-11-21 09:03:00,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:00,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:00,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:01,026 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 09:03:01,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:01,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680770228] [2022-11-21 09:03:01,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680770228] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:03:01,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976411077] [2022-11-21 09:03:01,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:01,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:03:01,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab91bd62-c171-4f3f-b0bf-90a242fffb95/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:03:01,029 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab91bd62-c171-4f3f-b0bf-90a242fffb95/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:03:01,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab91bd62-c171-4f3f-b0bf-90a242fffb95/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 09:03:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:01,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 09:03:01,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:03:01,269 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 09:03:01,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:03:01,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976411077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:01,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 09:03:01,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 09:03:01,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801512007] [2022-11-21 09:03:01,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:01,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:03:01,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:01,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:03:01,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 09:03:01,274 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 302 [2022-11-21 09:03:01,276 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 296 transitions, 960 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 09:03:01,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:03:01,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 302 [2022-11-21 09:03:01,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand