./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_4895a35e-7e55-4596-bb0f-b5f42c9fef9e/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4895a35e-7e55-4596-bb0f-b5f42c9fef9e/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4895a35e-7e55-4596-bb0f-b5f42c9fef9e/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4895a35e-7e55-4596-bb0f-b5f42c9fef9e/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4895a35e-7e55-4596-bb0f-b5f42c9fef9e/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4895a35e-7e55-4596-bb0f-b5f42c9fef9e/bin/uautomizer-uyxdKDjOR8 --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 761ee9f18ea63f4f821d50962d6c2d771ad2410f7c5dd57f48ec51463a1d5307 --- 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-2329fc7 [2022-12-13 12:17:07,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:17:07,511 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:17:07,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:17:07,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:17:07,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:17:07,531 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:17:07,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:17:07,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:17:07,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:17:07,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:17:07,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:17:07,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:17:07,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:17:07,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:17:07,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:17:07,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:17:07,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:17:07,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:17:07,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:17:07,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:17:07,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:17:07,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:17:07,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:17:07,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:17:07,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:17:07,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:17:07,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:17:07,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:17:07,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:17:07,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:17:07,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:17:07,556 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:17:07,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:17:07,558 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:17:07,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:17:07,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:17:07,559 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:17:07,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:17:07,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:17:07,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:17:07,561 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4895a35e-7e55-4596-bb0f-b5f42c9fef9e/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 12:17:07,574 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:17:07,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:17:07,575 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:17:07,575 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:17:07,575 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:17:07,575 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:17:07,576 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:17:07,576 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:17:07,576 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:17:07,576 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:17:07,576 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:17:07,576 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 12:17:07,576 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:17:07,576 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:17:07,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:17:07,577 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 12:17:07,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:17:07,577 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 12:17:07,577 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 12:17:07,577 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:17:07,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 12:17:07,577 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:17:07,577 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 12:17:07,577 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:17:07,577 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:17:07,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:17:07,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:17:07,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:17:07,578 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:17:07,578 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 12:17:07,578 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:17:07,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:17:07,578 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:17:07,578 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 12:17:07,578 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:17:07,579 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:17:07,579 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:17:07,579 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4895a35e-7e55-4596-bb0f-b5f42c9fef9e/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4895a35e-7e55-4596-bb0f-b5f42c9fef9e/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 761ee9f18ea63f4f821d50962d6c2d771ad2410f7c5dd57f48ec51463a1d5307 [2022-12-13 12:17:07,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:17:07,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:17:07,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:17:07,793 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:17:07,793 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:17:07,794 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4895a35e-7e55-4596-bb0f-b5f42c9fef9e/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c [2022-12-13 12:17:10,330 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:17:10,482 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:17:10,483 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4895a35e-7e55-4596-bb0f-b5f42c9fef9e/sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c [2022-12-13 12:17:10,489 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4895a35e-7e55-4596-bb0f-b5f42c9fef9e/bin/uautomizer-uyxdKDjOR8/data/23bea246c/447c26e974374618af2b4be0b1963a4c/FLAG06083f7ab [2022-12-13 12:17:10,894 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4895a35e-7e55-4596-bb0f-b5f42c9fef9e/bin/uautomizer-uyxdKDjOR8/data/23bea246c/447c26e974374618af2b4be0b1963a4c [2022-12-13 12:17:10,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:17:10,897 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:17:10,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:17:10,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:17:10,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:17:10,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:17:10" (1/1) ... [2022-12-13 12:17:10,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2521a069 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:17:10, skipping insertion in model container [2022-12-13 12:17:10,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:17:10" (1/1) ... [2022-12-13 12:17:10,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:17:10,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:17:11,027 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_4895a35e-7e55-4596-bb0f-b5f42c9fef9e/sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c[2575,2588] [2022-12-13 12:17:11,031 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:17:11,038 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:17:11,053 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_4895a35e-7e55-4596-bb0f-b5f42c9fef9e/sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c[2575,2588] [2022-12-13 12:17:11,054 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:17:11,064 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:17:11,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:17:11 WrapperNode [2022-12-13 12:17:11,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:17:11,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:17:11,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:17:11,065 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:17:11,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:17:11" (1/1) ... [2022-12-13 12:17:11,075 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:17:11" (1/1) ... [2022-12-13 12:17:11,092 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 209 [2022-12-13 12:17:11,092 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:17:11,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:17:11,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:17:11,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:17:11,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:17:11" (1/1) ... [2022-12-13 12:17:11,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:17:11" (1/1) ... [2022-12-13 12:17:11,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:17:11" (1/1) ... [2022-12-13 12:17:11,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:17:11" (1/1) ... [2022-12-13 12:17:11,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:17:11" (1/1) ... [2022-12-13 12:17:11,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:17:11" (1/1) ... [2022-12-13 12:17:11,108 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:17:11" (1/1) ... [2022-12-13 12:17:11,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:17:11" (1/1) ... [2022-12-13 12:17:11,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:17:11,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:17:11,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:17:11,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:17:11,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:17:11" (1/1) ... [2022-12-13 12:17:11,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:17:11,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4895a35e-7e55-4596-bb0f-b5f42c9fef9e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:17:11,135 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4895a35e-7e55-4596-bb0f-b5f42c9fef9e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:17:11,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4895a35e-7e55-4596-bb0f-b5f42c9fef9e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:17:11,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:17:11,161 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 12:17:11,161 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 12:17:11,161 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 12:17:11,161 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 12:17:11,161 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 12:17:11,161 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 12:17:11,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 12:17:11,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 12:17:11,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 12:17:11,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:17:11,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:17:11,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 12:17:11,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 12:17:11,164 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 12:17:11,239 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:17:11,241 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:17:11,508 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:17:11,519 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:17:11,519 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 12:17:11,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:17:11 BoogieIcfgContainer [2022-12-13 12:17:11,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:17:11,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:17:11,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:17:11,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:17:11,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:17:10" (1/3) ... [2022-12-13 12:17:11,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38acd85e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:17:11, skipping insertion in model container [2022-12-13 12:17:11,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:17:11" (2/3) ... [2022-12-13 12:17:11,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38acd85e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:17:11, skipping insertion in model container [2022-12-13 12:17:11,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:17:11" (3/3) ... [2022-12-13 12:17:11,527 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-subst.wvr.c [2022-12-13 12:17:11,535 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 12:17:11,543 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:17:11,544 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-12-13 12:17:11,544 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 12:17:11,635 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 12:17:11,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 275 places, 285 transitions, 594 flow [2022-12-13 12:17:11,766 INFO L130 PetriNetUnfolder]: 20/282 cut-off events. [2022-12-13 12:17:11,766 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 12:17:11,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 282 events. 20/282 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 732 event pairs, 0 based on Foata normal form. 0/244 useless extension candidates. Maximal degree in co-relation 205. Up to 2 conditions per place. [2022-12-13 12:17:11,774 INFO L82 GeneralOperation]: Start removeDead. Operand has 275 places, 285 transitions, 594 flow [2022-12-13 12:17:11,780 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 245 places, 253 transitions, 521 flow [2022-12-13 12:17:11,784 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:17:11,793 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 245 places, 253 transitions, 521 flow [2022-12-13 12:17:11,795 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 245 places, 253 transitions, 521 flow [2022-12-13 12:17:11,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 253 transitions, 521 flow [2022-12-13 12:17:11,841 INFO L130 PetriNetUnfolder]: 18/253 cut-off events. [2022-12-13 12:17:11,841 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 12:17:11,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 253 events. 18/253 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 715 event pairs, 0 based on Foata normal form. 0/217 useless extension candidates. Maximal degree in co-relation 205. Up to 2 conditions per place. [2022-12-13 12:17:11,858 INFO L119 LiptonReduction]: Number of co-enabled transitions 27528 [2022-12-13 12:17:23,886 INFO L134 LiptonReduction]: Checked pairs total: 26298 [2022-12-13 12:17:23,887 INFO L136 LiptonReduction]: Total number of compositions: 336 [2022-12-13 12:17:23,897 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:17:23,902 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;@591de9c3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:17:23,902 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2022-12-13 12:17:23,904 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2022-12-13 12:17:23,904 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:17:23,904 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:17:23,905 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 12:17:23,905 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-12-13 12:17:23,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:17:23,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1175422, now seen corresponding path program 1 times [2022-12-13 12:17:23,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:17:23,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090040826] [2022-12-13 12:17:23,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:17:23,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:17:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:24,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:17:24,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:17:24,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090040826] [2022-12-13 12:17:24,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090040826] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:17:24,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:17:24,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:17:24,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958807153] [2022-12-13 12:17:24,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:17:24,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 12:17:24,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:17:24,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 12:17:24,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 12:17:24,076 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 621 [2022-12-13 12:17:24,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 79 flow. Second operand has 2 states, 2 states have (on average 271.5) internal successors, (543), 2 states have internal predecessors, (543), 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) [2022-12-13 12:17:24,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:17:24,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 621 [2022-12-13 12:17:24,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:17:24,431 INFO L130 PetriNetUnfolder]: 1125/1726 cut-off events. [2022-12-13 12:17:24,432 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2022-12-13 12:17:24,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3585 conditions, 1726 events. 1125/1726 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 8199 event pairs, 1125 based on Foata normal form. 0/654 useless extension candidates. Maximal degree in co-relation 3104. Up to 1727 conditions per place. [2022-12-13 12:17:24,444 INFO L137 encePairwiseOnDemand]: 615/621 looper letters, 26 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2022-12-13 12:17:24,444 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 119 flow [2022-12-13 12:17:24,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 12:17:24,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 12:17:24,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 572 transitions. [2022-12-13 12:17:24,459 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4605475040257649 [2022-12-13 12:17:24,460 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 572 transitions. [2022-12-13 12:17:24,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 572 transitions. [2022-12-13 12:17:24,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:17:24,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 572 transitions. [2022-12-13 12:17:24,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 286.0) internal successors, (572), 2 states have internal predecessors, (572), 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) [2022-12-13 12:17:24,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 621.0) internal successors, (1863), 3 states have internal predecessors, (1863), 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) [2022-12-13 12:17:24,474 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 621.0) internal successors, (1863), 3 states have internal predecessors, (1863), 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) [2022-12-13 12:17:24,475 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 79 flow. Second operand 2 states and 572 transitions. [2022-12-13 12:17:24,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 119 flow [2022-12-13 12:17:24,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 110 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 12:17:24,483 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 58 flow [2022-12-13 12:17:24,485 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2022-12-13 12:17:24,488 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -10 predicate places. [2022-12-13 12:17:24,488 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 58 flow [2022-12-13 12:17:24,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 271.5) internal successors, (543), 2 states have internal predecessors, (543), 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) [2022-12-13 12:17:24,488 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:17:24,488 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 12:17:24,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 12:17:24,489 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-12-13 12:17:24,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:17:24,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1175484, now seen corresponding path program 1 times [2022-12-13 12:17:24,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:17:24,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370021786] [2022-12-13 12:17:24,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:17:24,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:17:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:24,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:17:24,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:17:24,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370021786] [2022-12-13 12:17:24,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370021786] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:17:24,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:17:24,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:17:24,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946105542] [2022-12-13 12:17:24,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:17:24,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:17:24,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:17:24,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:17:24,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:17:24,623 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 621 [2022-12-13 12:17:24,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 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) [2022-12-13 12:17:24,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:17:24,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 621 [2022-12-13 12:17:24,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:17:24,784 INFO L130 PetriNetUnfolder]: 777/1210 cut-off events. [2022-12-13 12:17:24,784 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:17:24,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2479 conditions, 1210 events. 777/1210 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 5400 event pairs, 777 based on Foata normal form. 0/500 useless extension candidates. Maximal degree in co-relation 2476. Up to 1210 conditions per place. [2022-12-13 12:17:24,788 INFO L137 encePairwiseOnDemand]: 618/621 looper letters, 23 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2022-12-13 12:17:24,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 24 transitions, 102 flow [2022-12-13 12:17:24,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:17:24,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:17:24,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 830 transitions. [2022-12-13 12:17:24,790 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4455179817498658 [2022-12-13 12:17:24,790 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 830 transitions. [2022-12-13 12:17:24,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 830 transitions. [2022-12-13 12:17:24,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:17:24,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 830 transitions. [2022-12-13 12:17:24,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 276.6666666666667) internal successors, (830), 3 states have internal predecessors, (830), 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) [2022-12-13 12:17:24,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 621.0) internal successors, (2484), 4 states have internal predecessors, (2484), 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) [2022-12-13 12:17:24,799 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 621.0) internal successors, (2484), 4 states have internal predecessors, (2484), 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) [2022-12-13 12:17:24,799 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 58 flow. Second operand 3 states and 830 transitions. [2022-12-13 12:17:24,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 24 transitions, 102 flow [2022-12-13 12:17:24,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 24 transitions, 102 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 12:17:24,800 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 56 flow [2022-12-13 12:17:24,800 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2022-12-13 12:17:24,800 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -10 predicate places. [2022-12-13 12:17:24,801 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 56 flow [2022-12-13 12:17:24,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 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) [2022-12-13 12:17:24,801 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:17:24,801 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 12:17:24,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 12:17:24,801 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-12-13 12:17:24,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:17:24,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1175486, now seen corresponding path program 1 times [2022-12-13 12:17:24,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:17:24,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833592649] [2022-12-13 12:17:24,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:17:24,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:17:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:24,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:17:24,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:17:24,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833592649] [2022-12-13 12:17:24,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833592649] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:17:24,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:17:24,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:17:24,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738217162] [2022-12-13 12:17:24,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:17:24,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:17:24,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:17:24,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:17:24,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:17:24,851 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 621 [2022-12-13 12:17:24,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 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) [2022-12-13 12:17:24,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:17:24,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 621 [2022-12-13 12:17:24,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:17:24,975 INFO L130 PetriNetUnfolder]: 527/836 cut-off events. [2022-12-13 12:17:24,975 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:17:24,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1722 conditions, 836 events. 527/836 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 3517 event pairs, 527 based on Foata normal form. 0/382 useless extension candidates. Maximal degree in co-relation 1718. Up to 836 conditions per place. [2022-12-13 12:17:24,978 INFO L137 encePairwiseOnDemand]: 618/621 looper letters, 21 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2022-12-13 12:17:24,978 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 22 transitions, 96 flow [2022-12-13 12:17:24,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:17:24,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:17:24,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 828 transitions. [2022-12-13 12:17:24,980 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2022-12-13 12:17:24,980 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 828 transitions. [2022-12-13 12:17:24,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 828 transitions. [2022-12-13 12:17:24,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:17:24,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 828 transitions. [2022-12-13 12:17:24,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 276.0) internal successors, (828), 3 states have internal predecessors, (828), 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) [2022-12-13 12:17:24,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 621.0) internal successors, (2484), 4 states have internal predecessors, (2484), 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) [2022-12-13 12:17:24,985 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 621.0) internal successors, (2484), 4 states have internal predecessors, (2484), 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) [2022-12-13 12:17:24,985 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 56 flow. Second operand 3 states and 828 transitions. [2022-12-13 12:17:24,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 22 transitions, 96 flow [2022-12-13 12:17:24,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 22 transitions, 95 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:17:24,985 INFO L231 Difference]: Finished difference. Result has 31 places, 22 transitions, 53 flow [2022-12-13 12:17:24,985 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2022-12-13 12:17:24,986 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -11 predicate places. [2022-12-13 12:17:24,986 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 53 flow [2022-12-13 12:17:24,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 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) [2022-12-13 12:17:24,986 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:17:24,987 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 12:17:24,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 12:17:24,987 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-12-13 12:17:24,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:17:24,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1175485, now seen corresponding path program 1 times [2022-12-13 12:17:24,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:17:24,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137188544] [2022-12-13 12:17:24,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:17:24,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:17:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:25,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:17:25,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:17:25,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137188544] [2022-12-13 12:17:25,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137188544] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:17:25,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:17:25,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:17:25,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411003247] [2022-12-13 12:17:25,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:17:25,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:17:25,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:17:25,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:17:25,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:17:25,063 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 621 [2022-12-13 12:17:25,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 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) [2022-12-13 12:17:25,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:17:25,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 621 [2022-12-13 12:17:25,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:17:25,178 INFO L130 PetriNetUnfolder]: 315/516 cut-off events. [2022-12-13 12:17:25,178 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:17:25,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1066 conditions, 516 events. 315/516 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 1980 event pairs, 315 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 1062. Up to 516 conditions per place. [2022-12-13 12:17:25,179 INFO L137 encePairwiseOnDemand]: 618/621 looper letters, 19 selfloop transitions, 1 changer transitions 0/20 dead transitions. [2022-12-13 12:17:25,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 20 transitions, 89 flow [2022-12-13 12:17:25,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:17:25,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:17:25,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 826 transitions. [2022-12-13 12:17:25,181 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4433709071390231 [2022-12-13 12:17:25,181 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 826 transitions. [2022-12-13 12:17:25,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 826 transitions. [2022-12-13 12:17:25,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:17:25,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 826 transitions. [2022-12-13 12:17:25,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 275.3333333333333) internal successors, (826), 3 states have internal predecessors, (826), 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) [2022-12-13 12:17:25,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 621.0) internal successors, (2484), 4 states have internal predecessors, (2484), 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) [2022-12-13 12:17:25,187 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 621.0) internal successors, (2484), 4 states have internal predecessors, (2484), 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) [2022-12-13 12:17:25,187 INFO L175 Difference]: Start difference. First operand has 31 places, 22 transitions, 53 flow. Second operand 3 states and 826 transitions. [2022-12-13 12:17:25,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 20 transitions, 89 flow [2022-12-13 12:17:25,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 20 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:17:25,188 INFO L231 Difference]: Finished difference. Result has 30 places, 20 transitions, 50 flow [2022-12-13 12:17:25,188 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2022-12-13 12:17:25,188 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -12 predicate places. [2022-12-13 12:17:25,188 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 50 flow [2022-12-13 12:17:25,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 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) [2022-12-13 12:17:25,189 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:17:25,189 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 12:17:25,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 12:17:25,189 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-12-13 12:17:25,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:17:25,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1175441, now seen corresponding path program 1 times [2022-12-13 12:17:25,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:17:25,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374140876] [2022-12-13 12:17:25,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:17:25,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:17:25,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:25,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:17:25,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:17:25,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374140876] [2022-12-13 12:17:25,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374140876] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:17:25,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:17:25,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:17:25,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250137173] [2022-12-13 12:17:25,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:17:25,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:17:25,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:17:25,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:17:25,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:17:25,223 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 621 [2022-12-13 12:17:25,224 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 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) [2022-12-13 12:17:25,224 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:17:25,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 621 [2022-12-13 12:17:25,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:17:25,312 INFO L130 PetriNetUnfolder]: 173/298 cut-off events. [2022-12-13 12:17:25,312 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:17:25,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 622 conditions, 298 events. 173/298 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 992 event pairs, 173 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 618. Up to 298 conditions per place. [2022-12-13 12:17:25,314 INFO L137 encePairwiseOnDemand]: 618/621 looper letters, 17 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2022-12-13 12:17:25,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 18 transitions, 82 flow [2022-12-13 12:17:25,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:17:25,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:17:25,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 824 transitions. [2022-12-13 12:17:25,316 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44229736983360174 [2022-12-13 12:17:25,317 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 824 transitions. [2022-12-13 12:17:25,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 824 transitions. [2022-12-13 12:17:25,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:17:25,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 824 transitions. [2022-12-13 12:17:25,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 274.6666666666667) internal successors, (824), 3 states have internal predecessors, (824), 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) [2022-12-13 12:17:25,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 621.0) internal successors, (2484), 4 states have internal predecessors, (2484), 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) [2022-12-13 12:17:25,321 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 621.0) internal successors, (2484), 4 states have internal predecessors, (2484), 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) [2022-12-13 12:17:25,321 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 50 flow. Second operand 3 states and 824 transitions. [2022-12-13 12:17:25,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 18 transitions, 82 flow [2022-12-13 12:17:25,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 18 transitions, 81 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:17:25,321 INFO L231 Difference]: Finished difference. Result has 29 places, 18 transitions, 47 flow [2022-12-13 12:17:25,321 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=29, PETRI_TRANSITIONS=18} [2022-12-13 12:17:25,322 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -13 predicate places. [2022-12-13 12:17:25,322 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 18 transitions, 47 flow [2022-12-13 12:17:25,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 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) [2022-12-13 12:17:25,322 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:17:25,322 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:17:25,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 12:17:25,323 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-12-13 12:17:25,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:17:25,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1129575013, now seen corresponding path program 1 times [2022-12-13 12:17:25,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:17:25,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143574795] [2022-12-13 12:17:25,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:17:25,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:17:25,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:25,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:17:25,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:17:25,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143574795] [2022-12-13 12:17:25,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143574795] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:17:25,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:17:25,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:17:25,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043794696] [2022-12-13 12:17:25,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:17:25,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:17:25,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:17:25,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:17:25,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:17:25,361 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 621 [2022-12-13 12:17:25,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 18 transitions, 47 flow. Second operand has 3 states, 3 states have (on average 269.6666666666667) internal successors, (809), 3 states have internal predecessors, (809), 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) [2022-12-13 12:17:25,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:17:25,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 621 [2022-12-13 12:17:25,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:17:25,427 INFO L130 PetriNetUnfolder]: 93/170 cut-off events. [2022-12-13 12:17:25,427 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:17:25,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 170 events. 93/170 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 472 event pairs, 93 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 359. Up to 170 conditions per place. [2022-12-13 12:17:25,428 INFO L137 encePairwiseOnDemand]: 618/621 looper letters, 15 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2022-12-13 12:17:25,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 16 transitions, 75 flow [2022-12-13 12:17:25,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:17:25,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:17:25,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 822 transitions. [2022-12-13 12:17:25,432 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44122383252818037 [2022-12-13 12:17:25,432 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 822 transitions. [2022-12-13 12:17:25,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 822 transitions. [2022-12-13 12:17:25,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:17:25,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 822 transitions. [2022-12-13 12:17:25,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 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) [2022-12-13 12:17:25,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 621.0) internal successors, (2484), 4 states have internal predecessors, (2484), 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) [2022-12-13 12:17:25,436 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 621.0) internal successors, (2484), 4 states have internal predecessors, (2484), 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) [2022-12-13 12:17:25,436 INFO L175 Difference]: Start difference. First operand has 29 places, 18 transitions, 47 flow. Second operand 3 states and 822 transitions. [2022-12-13 12:17:25,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 16 transitions, 75 flow [2022-12-13 12:17:25,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 16 transitions, 74 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:17:25,437 INFO L231 Difference]: Finished difference. Result has 28 places, 16 transitions, 44 flow [2022-12-13 12:17:25,437 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=28, PETRI_TRANSITIONS=16} [2022-12-13 12:17:25,437 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -14 predicate places. [2022-12-13 12:17:25,437 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 16 transitions, 44 flow [2022-12-13 12:17:25,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 269.6666666666667) internal successors, (809), 3 states have internal predecessors, (809), 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) [2022-12-13 12:17:25,438 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:17:25,438 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:17:25,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 12:17:25,438 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-12-13 12:17:25,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:17:25,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1129574953, now seen corresponding path program 1 times [2022-12-13 12:17:25,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:17:25,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845178033] [2022-12-13 12:17:25,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:17:25,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:17:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:25,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:17:25,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:17:25,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845178033] [2022-12-13 12:17:25,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845178033] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:17:25,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:17:25,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:17:25,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958790428] [2022-12-13 12:17:25,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:17:25,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:17:25,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:17:25,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:17:25,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:17:25,473 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 621 [2022-12-13 12:17:25,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 16 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 269.6666666666667) internal successors, (809), 3 states have internal predecessors, (809), 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) [2022-12-13 12:17:25,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:17:25,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 621 [2022-12-13 12:17:25,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:17:25,524 INFO L130 PetriNetUnfolder]: 37/78 cut-off events. [2022-12-13 12:17:25,524 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:17:25,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 78 events. 37/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 151 event pairs, 37 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 172. Up to 78 conditions per place. [2022-12-13 12:17:25,524 INFO L137 encePairwiseOnDemand]: 618/621 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2022-12-13 12:17:25,525 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 14 transitions, 68 flow [2022-12-13 12:17:25,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:17:25,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:17:25,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 820 transitions. [2022-12-13 12:17:25,528 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.440150295222759 [2022-12-13 12:17:25,528 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 820 transitions. [2022-12-13 12:17:25,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 820 transitions. [2022-12-13 12:17:25,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:17:25,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 820 transitions. [2022-12-13 12:17:25,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 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) [2022-12-13 12:17:25,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 621.0) internal successors, (2484), 4 states have internal predecessors, (2484), 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) [2022-12-13 12:17:25,532 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 621.0) internal successors, (2484), 4 states have internal predecessors, (2484), 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) [2022-12-13 12:17:25,532 INFO L175 Difference]: Start difference. First operand has 28 places, 16 transitions, 44 flow. Second operand 3 states and 820 transitions. [2022-12-13 12:17:25,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 14 transitions, 68 flow [2022-12-13 12:17:25,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 14 transitions, 67 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:17:25,532 INFO L231 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2022-12-13 12:17:25,532 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=39, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=27, PETRI_TRANSITIONS=0} [2022-12-13 12:17:25,533 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -15 predicate places. [2022-12-13 12:17:25,533 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 0 transitions, 0 flow [2022-12-13 12:17:25,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 269.6666666666667) internal successors, (809), 3 states have internal predecessors, (809), 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) [2022-12-13 12:17:25,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 39 remaining) [2022-12-13 12:17:25,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 39 remaining) [2022-12-13 12:17:25,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 39 remaining) [2022-12-13 12:17:25,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 39 remaining) [2022-12-13 12:17:25,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 39 remaining) [2022-12-13 12:17:25,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 39 remaining) [2022-12-13 12:17:25,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 39 remaining) [2022-12-13 12:17:25,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 39 remaining) [2022-12-13 12:17:25,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 39 remaining) [2022-12-13 12:17:25,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 39 remaining) [2022-12-13 12:17:25,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 39 remaining) [2022-12-13 12:17:25,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 39 remaining) [2022-12-13 12:17:25,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 39 remaining) [2022-12-13 12:17:25,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 39 remaining) [2022-12-13 12:17:25,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 39 remaining) [2022-12-13 12:17:25,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 39 remaining) [2022-12-13 12:17:25,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 39 remaining) [2022-12-13 12:17:25,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 39 remaining) [2022-12-13 12:17:25,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 39 remaining) [2022-12-13 12:17:25,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 39 remaining) [2022-12-13 12:17:25,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 39 remaining) [2022-12-13 12:17:25,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 39 remaining) [2022-12-13 12:17:25,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 39 remaining) [2022-12-13 12:17:25,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 39 remaining) [2022-12-13 12:17:25,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 39 remaining) [2022-12-13 12:17:25,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 39 remaining) [2022-12-13 12:17:25,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 39 remaining) [2022-12-13 12:17:25,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 39 remaining) [2022-12-13 12:17:25,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 39 remaining) [2022-12-13 12:17:25,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 39 remaining) [2022-12-13 12:17:25,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 39 remaining) [2022-12-13 12:17:25,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 39 remaining) [2022-12-13 12:17:25,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 39 remaining) [2022-12-13 12:17:25,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 39 remaining) [2022-12-13 12:17:25,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 39 remaining) [2022-12-13 12:17:25,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 39 remaining) [2022-12-13 12:17:25,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 39 remaining) [2022-12-13 12:17:25,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 39 remaining) [2022-12-13 12:17:25,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 39 remaining) [2022-12-13 12:17:25,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 12:17:25,539 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:17:25,543 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 12:17:25,543 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 12:17:25,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 12:17:25 BasicIcfg [2022-12-13 12:17:25,545 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 12:17:25,546 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 12:17:25,546 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 12:17:25,546 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 12:17:25,546 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:17:11" (3/4) ... [2022-12-13 12:17:25,548 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 12:17:25,552 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 12:17:25,552 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 12:17:25,553 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-12-13 12:17:25,555 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-12-13 12:17:25,555 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 12:17:25,555 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 12:17:25,556 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 12:17:25,578 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4895a35e-7e55-4596-bb0f-b5f42c9fef9e/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 12:17:25,578 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 12:17:25,579 INFO L158 Benchmark]: Toolchain (without parser) took 14681.81ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 107.7MB in the beginning and 48.2MB in the end (delta: 59.5MB). Peak memory consumption was 88.4MB. Max. memory is 16.1GB. [2022-12-13 12:17:25,579 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 134.2MB. Free memory is still 103.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 12:17:25,579 INFO L158 Benchmark]: CACSL2BoogieTranslator took 166.33ms. Allocated memory is still 134.2MB. Free memory was 107.4MB in the beginning and 96.3MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 12:17:25,579 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.18ms. Allocated memory is still 134.2MB. Free memory was 96.3MB in the beginning and 94.0MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 12:17:25,580 INFO L158 Benchmark]: Boogie Preprocessor took 18.48ms. Allocated memory is still 134.2MB. Free memory was 94.0MB in the beginning and 92.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 12:17:25,580 INFO L158 Benchmark]: RCFGBuilder took 409.46ms. Allocated memory is still 134.2MB. Free memory was 92.2MB in the beginning and 70.9MB in the end (delta: 21.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-13 12:17:25,580 INFO L158 Benchmark]: TraceAbstraction took 14022.91ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 70.3MB in the beginning and 51.3MB in the end (delta: 18.9MB). Peak memory consumption was 46.5MB. Max. memory is 16.1GB. [2022-12-13 12:17:25,580 INFO L158 Benchmark]: Witness Printer took 32.87ms. Allocated memory is still 161.5MB. Free memory was 51.3MB in the beginning and 48.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 12:17:25,581 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 134.2MB. Free memory is still 103.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 166.33ms. Allocated memory is still 134.2MB. Free memory was 107.4MB in the beginning and 96.3MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.18ms. Allocated memory is still 134.2MB. Free memory was 96.3MB in the beginning and 94.0MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.48ms. Allocated memory is still 134.2MB. Free memory was 94.0MB in the beginning and 92.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 409.46ms. Allocated memory is still 134.2MB. Free memory was 92.2MB in the beginning and 70.9MB in the end (delta: 21.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 14022.91ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 70.3MB in the beginning and 51.3MB in the end (delta: 18.9MB). Peak memory consumption was 46.5MB. Max. memory is 16.1GB. * Witness Printer took 32.87ms. Allocated memory is still 161.5MB. Free memory was 51.3MB in the beginning and 48.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.1s, 245 PlacesBefore, 42 PlacesAfterwards, 253 TransitionsBefore, 32 TransitionsAfterwards, 27528 CoEnabledTransitionPairs, 8 FixpointIterations, 44 TrivialSequentialCompositions, 212 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 62 ConcurrentYvCompositions, 18 ChoiceCompositions, 336 TotalNumberOfCompositions, 26298 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 26298, independent: 26298, independent conditional: 0, independent unconditional: 26298, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 16414, independent: 16414, independent conditional: 0, independent unconditional: 16414, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 26298, independent: 9884, independent conditional: 0, independent unconditional: 9884, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 16414, unknown conditional: 0, unknown unconditional: 16414] , Statistics on independence cache: Total cache size (in pairs): 87, Positive cache size: 87, Positive conditional cache size: 0, Positive unconditional cache size: 87, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 440 locations, 39 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 13.9s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 12.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 150 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 110 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 175 IncrementalHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 9 mSDtfsCounter, 175 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 66 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 12:17:25,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4895a35e-7e55-4596-bb0f-b5f42c9fef9e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE