./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc4b16b-f0d8-45c8-bcef-e2d782ff8167/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc4b16b-f0d8-45c8-bcef-e2d782ff8167/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_1dc4b16b-f0d8-45c8-bcef-e2d782ff8167/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc4b16b-f0d8-45c8-bcef-e2d782ff8167/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc4b16b-f0d8-45c8-bcef-e2d782ff8167/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_1dc4b16b-f0d8-45c8-bcef-e2d782ff8167/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 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b --- 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 14:02:23,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:02:23,164 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:02:23,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:02:23,181 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:02:23,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:02:23,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:02:23,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:02:23,186 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:02:23,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:02:23,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:02:23,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:02:23,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:02:23,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:02:23,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:02:23,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:02:23,192 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:02:23,193 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:02:23,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:02:23,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:02:23,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:02:23,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:02:23,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:02:23,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:02:23,203 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:02:23,203 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:02:23,203 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:02:23,204 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:02:23,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:02:23,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:02:23,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:02:23,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:02:23,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:02:23,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:02:23,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:02:23,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:02:23,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:02:23,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:02:23,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:02:23,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:02:23,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:02:23,211 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc4b16b-f0d8-45c8-bcef-e2d782ff8167/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 14:02:23,231 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:02:23,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:02:23,232 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:02:23,232 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:02:23,233 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:02:23,233 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:02:23,233 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:02:23,234 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:02:23,234 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:02:23,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:02:23,234 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 14:02:23,234 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 14:02:23,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 14:02:23,235 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 14:02:23,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:02:23,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 14:02:23,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:02:23,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 14:02:23,235 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 14:02:23,235 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 14:02:23,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 14:02:23,236 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:02:23,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 14:02:23,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:02:23,236 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:02:23,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:02:23,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:02:23,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:02:23,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:02:23,237 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 14:02:23,237 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 14:02:23,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 14:02:23,238 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:02:23,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 14:02:23,238 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:02:23,238 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:02:23,238 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:02:23,238 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_1dc4b16b-f0d8-45c8-bcef-e2d782ff8167/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc4b16b-f0d8-45c8-bcef-e2d782ff8167/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b [2022-12-13 14:02:23,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:02:23,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:02:23,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:02:23,453 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:02:23,454 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:02:23,454 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc4b16b-f0d8-45c8-bcef-e2d782ff8167/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2022-12-13 14:02:26,016 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:02:26,228 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:02:26,229 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc4b16b-f0d8-45c8-bcef-e2d782ff8167/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2022-12-13 14:02:26,245 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc4b16b-f0d8-45c8-bcef-e2d782ff8167/bin/uautomizer-uyxdKDjOR8/data/87e02ff75/02392005646c4895a7488d11b4987a87/FLAG84c3b9dcf [2022-12-13 14:02:26,256 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc4b16b-f0d8-45c8-bcef-e2d782ff8167/bin/uautomizer-uyxdKDjOR8/data/87e02ff75/02392005646c4895a7488d11b4987a87 [2022-12-13 14:02:26,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:02:26,260 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:02:26,261 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:02:26,261 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:02:26,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:02:26,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:02:26" (1/1) ... [2022-12-13 14:02:26,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e42725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:02:26, skipping insertion in model container [2022-12-13 14:02:26,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:02:26" (1/1) ... [2022-12-13 14:02:26,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:02:26,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:02:26,606 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_1dc4b16b-f0d8-45c8-bcef-e2d782ff8167/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2022-12-13 14:02:26,631 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:02:26,641 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:02:26,669 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_1dc4b16b-f0d8-45c8-bcef-e2d782ff8167/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2022-12-13 14:02:26,679 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:02:26,713 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:02:26,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:02:26 WrapperNode [2022-12-13 14:02:26,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:02:26,714 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:02:26,714 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:02:26,714 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:02:26,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:02:26" (1/1) ... [2022-12-13 14:02:26,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:02:26" (1/1) ... [2022-12-13 14:02:26,749 INFO L138 Inliner]: procedures = 278, calls = 54, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 216 [2022-12-13 14:02:26,749 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:02:26,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:02:26,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:02:26,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:02:26,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:02:26" (1/1) ... [2022-12-13 14:02:26,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:02:26" (1/1) ... [2022-12-13 14:02:26,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:02:26" (1/1) ... [2022-12-13 14:02:26,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:02:26" (1/1) ... [2022-12-13 14:02:26,766 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:02:26" (1/1) ... [2022-12-13 14:02:26,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:02:26" (1/1) ... [2022-12-13 14:02:26,770 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:02:26" (1/1) ... [2022-12-13 14:02:26,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:02:26" (1/1) ... [2022-12-13 14:02:26,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:02:26,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:02:26,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:02:26,774 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:02:26,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:02:26" (1/1) ... [2022-12-13 14:02:26,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:02:26,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc4b16b-f0d8-45c8-bcef-e2d782ff8167/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:02:26,801 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc4b16b-f0d8-45c8-bcef-e2d782ff8167/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 14:02:26,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc4b16b-f0d8-45c8-bcef-e2d782ff8167/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 14:02:26,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 14:02:26,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 14:02:26,838 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-12-13 14:02:26,838 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-12-13 14:02:26,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 14:02:26,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 14:02:26,838 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-12-13 14:02:26,838 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-12-13 14:02:26,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 14:02:26,839 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 14:02:26,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 14:02:26,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 14:02:26,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 14:02:26,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 14:02:26,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:02:26,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:02:26,841 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 14:02:26,975 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:02:26,977 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:02:27,286 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:02:27,295 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:02:27,295 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2022-12-13 14:02:27,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:02:27 BoogieIcfgContainer [2022-12-13 14:02:27,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:02:27,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 14:02:27,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 14:02:27,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 14:02:27,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 02:02:26" (1/3) ... [2022-12-13 14:02:27,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c98b7ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:02:27, skipping insertion in model container [2022-12-13 14:02:27,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:02:26" (2/3) ... [2022-12-13 14:02:27,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c98b7ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:02:27, skipping insertion in model container [2022-12-13 14:02:27,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:02:27" (3/3) ... [2022-12-13 14:02:27,307 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2022-12-13 14:02:27,316 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 14:02:27,327 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 14:02:27,327 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-12-13 14:02:27,327 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 14:02:27,414 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 14:02:27,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 243 transitions, 508 flow [2022-12-13 14:02:27,556 INFO L130 PetriNetUnfolder]: 52/464 cut-off events. [2022-12-13 14:02:27,557 INFO L131 PetriNetUnfolder]: For 8/15 co-relation queries the response was YES. [2022-12-13 14:02:27,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484 conditions, 464 events. 52/464 cut-off events. For 8/15 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1888 event pairs, 0 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 232. Up to 8 conditions per place. [2022-12-13 14:02:27,566 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 243 transitions, 508 flow [2022-12-13 14:02:27,574 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 225 places, 243 transitions, 508 flow [2022-12-13 14:02:27,578 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 14:02:27,588 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 225 places, 243 transitions, 508 flow [2022-12-13 14:02:27,591 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 225 places, 243 transitions, 508 flow [2022-12-13 14:02:27,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 243 transitions, 508 flow [2022-12-13 14:02:27,654 INFO L130 PetriNetUnfolder]: 52/464 cut-off events. [2022-12-13 14:02:27,654 INFO L131 PetriNetUnfolder]: For 8/15 co-relation queries the response was YES. [2022-12-13 14:02:27,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484 conditions, 464 events. 52/464 cut-off events. For 8/15 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1888 event pairs, 0 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 232. Up to 8 conditions per place. [2022-12-13 14:02:27,667 INFO L119 LiptonReduction]: Number of co-enabled transitions 18686 [2022-12-13 14:02:33,733 INFO L134 LiptonReduction]: Checked pairs total: 34598 [2022-12-13 14:02:33,733 INFO L136 LiptonReduction]: Total number of compositions: 209 [2022-12-13 14:02:33,744 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:02:33,748 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;@6913327, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:02:33,748 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-12-13 14:02:33,751 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2022-12-13 14:02:33,751 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 14:02:33,751 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:02:33,751 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 14:02:33,752 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 14:02:33,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:02:33,755 INFO L85 PathProgramCache]: Analyzing trace with hash 28988060, now seen corresponding path program 1 times [2022-12-13 14:02:33,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:02:33,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929838809] [2022-12-13 14:02:33,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:02:33,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:02:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:02:33,952 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 14:02:33,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:02:33,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929838809] [2022-12-13 14:02:33,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929838809] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:02:33,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:02:33,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 14:02:33,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609060310] [2022-12-13 14:02:33,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:02:33,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:02:33,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:02:33,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:02:33,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:02:33,992 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 452 [2022-12-13 14:02:33,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 75 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 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 14:02:33,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:02:33,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 452 [2022-12-13 14:02:33,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:02:34,652 INFO L130 PetriNetUnfolder]: 3469/5945 cut-off events. [2022-12-13 14:02:34,653 INFO L131 PetriNetUnfolder]: For 130/130 co-relation queries the response was YES. [2022-12-13 14:02:34,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11460 conditions, 5945 events. 3469/5945 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 36761 event pairs, 1656 based on Foata normal form. 500/4897 useless extension candidates. Maximal degree in co-relation 10357. Up to 5410 conditions per place. [2022-12-13 14:02:34,684 INFO L137 encePairwiseOnDemand]: 436/452 looper letters, 58 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2022-12-13 14:02:34,684 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 70 transitions, 282 flow [2022-12-13 14:02:34,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:02:34,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:02:34,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 722 transitions. [2022-12-13 14:02:34,699 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.532448377581121 [2022-12-13 14:02:34,700 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 722 transitions. [2022-12-13 14:02:34,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 722 transitions. [2022-12-13 14:02:34,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:02:34,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 722 transitions. [2022-12-13 14:02:34,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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 14:02:34,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 452.0) internal successors, (1808), 4 states have internal predecessors, (1808), 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 14:02:34,717 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 452.0) internal successors, (1808), 4 states have internal predecessors, (1808), 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 14:02:34,718 INFO L175 Difference]: Start difference. First operand has 63 places, 75 transitions, 172 flow. Second operand 3 states and 722 transitions. [2022-12-13 14:02:34,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 70 transitions, 282 flow [2022-12-13 14:02:34,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 70 transitions, 282 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 14:02:34,725 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 154 flow [2022-12-13 14:02:34,727 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2022-12-13 14:02:34,730 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 1 predicate places. [2022-12-13 14:02:34,731 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 154 flow [2022-12-13 14:02:34,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 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 14:02:34,731 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:02:34,732 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 14:02:34,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 14:02:34,732 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 14:02:34,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:02:34,733 INFO L85 PathProgramCache]: Analyzing trace with hash 2087768028, now seen corresponding path program 1 times [2022-12-13 14:02:34,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:02:34,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994131410] [2022-12-13 14:02:34,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:02:34,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:02:34,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 14:02:34,762 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 14:02:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 14:02:34,791 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 14:02:34,791 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 14:02:34,793 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2022-12-13 14:02:34,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-12-13 14:02:34,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-12-13 14:02:34,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-12-13 14:02:34,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-12-13 14:02:34,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-12-13 14:02:34,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-12-13 14:02:34,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-12-13 14:02:34,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2022-12-13 14:02:34,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2022-12-13 14:02:34,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-12-13 14:02:34,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-12-13 14:02:34,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-12-13 14:02:34,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 18 remaining) [2022-12-13 14:02:34,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-12-13 14:02:34,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-12-13 14:02:34,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-12-13 14:02:34,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-12-13 14:02:34,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 14:02:34,797 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 14:02:34,799 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 14:02:34,799 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 14:02:34,849 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-12-13 14:02:34,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 337 places, 370 transitions, 788 flow [2022-12-13 14:02:35,132 INFO L130 PetriNetUnfolder]: 191/1413 cut-off events. [2022-12-13 14:02:35,132 INFO L131 PetriNetUnfolder]: For 72/95 co-relation queries the response was YES. [2022-12-13 14:02:35,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1510 conditions, 1413 events. 191/1413 cut-off events. For 72/95 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 9057 event pairs, 2 based on Foata normal form. 0/1132 useless extension candidates. Maximal degree in co-relation 873. Up to 32 conditions per place. [2022-12-13 14:02:35,147 INFO L82 GeneralOperation]: Start removeDead. Operand has 337 places, 370 transitions, 788 flow [2022-12-13 14:02:35,164 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 337 places, 370 transitions, 788 flow [2022-12-13 14:02:35,164 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 14:02:35,164 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 337 places, 370 transitions, 788 flow [2022-12-13 14:02:35,165 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 337 places, 370 transitions, 788 flow [2022-12-13 14:02:35,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 337 places, 370 transitions, 788 flow [2022-12-13 14:02:35,451 INFO L130 PetriNetUnfolder]: 191/1413 cut-off events. [2022-12-13 14:02:35,452 INFO L131 PetriNetUnfolder]: For 72/95 co-relation queries the response was YES. [2022-12-13 14:02:35,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1510 conditions, 1413 events. 191/1413 cut-off events. For 72/95 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 9057 event pairs, 2 based on Foata normal form. 0/1132 useless extension candidates. Maximal degree in co-relation 873. Up to 32 conditions per place. [2022-12-13 14:02:35,533 INFO L119 LiptonReduction]: Number of co-enabled transitions 68940 [2022-12-13 14:02:42,398 INFO L134 LiptonReduction]: Checked pairs total: 140853 [2022-12-13 14:02:42,398 INFO L136 LiptonReduction]: Total number of compositions: 309 [2022-12-13 14:02:42,400 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:02:42,401 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;@6913327, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:02:42,401 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-12-13 14:02:42,403 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2022-12-13 14:02:42,403 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 14:02:42,403 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:02:42,403 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 14:02:42,403 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 14:02:42,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:02:42,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1665827688, now seen corresponding path program 1 times [2022-12-13 14:02:42,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:02:42,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142685706] [2022-12-13 14:02:42,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:02:42,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:02:42,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:02:42,459 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 14:02:42,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:02:42,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142685706] [2022-12-13 14:02:42,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142685706] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:02:42,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:02:42,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 14:02:42,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73558116] [2022-12-13 14:02:42,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:02:42,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:02:42,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:02:42,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:02:42,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:02:42,472 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 679 [2022-12-13 14:02:42,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 127 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 325.3333333333333) internal successors, (976), 3 states have internal predecessors, (976), 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 14:02:42,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:02:42,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 679 [2022-12-13 14:02:42,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:04:35,385 INFO L130 PetriNetUnfolder]: 1199103/1596304 cut-off events. [2022-12-13 14:04:35,386 INFO L131 PetriNetUnfolder]: For 54942/54942 co-relation queries the response was YES. [2022-12-13 14:04:38,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3141695 conditions, 1596304 events. 1199103/1596304 cut-off events. For 54942/54942 co-relation queries the response was YES. Maximal size of possible extension queue 36284. Compared 12930562 event pairs, 846532 based on Foata normal form. 113228/1341070 useless extension candidates. Maximal degree in co-relation 504130. Up to 1521044 conditions per place. [2022-12-13 14:04:43,197 INFO L137 encePairwiseOnDemand]: 651/679 looper letters, 94 selfloop transitions, 2 changer transitions 0/113 dead transitions. [2022-12-13 14:04:43,197 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 113 transitions, 466 flow [2022-12-13 14:04:43,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:04:43,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:04:43,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1094 transitions. [2022-12-13 14:04:43,201 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5370643102601865 [2022-12-13 14:04:43,201 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1094 transitions. [2022-12-13 14:04:43,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1094 transitions. [2022-12-13 14:04:43,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:04:43,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1094 transitions. [2022-12-13 14:04:43,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 364.6666666666667) internal successors, (1094), 3 states have internal predecessors, (1094), 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 14:04:43,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 679.0) internal successors, (2716), 4 states have internal predecessors, (2716), 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 14:04:43,210 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 679.0) internal successors, (2716), 4 states have internal predecessors, (2716), 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 14:04:43,210 INFO L175 Difference]: Start difference. First operand has 101 places, 127 transitions, 302 flow. Second operand 3 states and 1094 transitions. [2022-12-13 14:04:43,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 113 transitions, 466 flow [2022-12-13 14:04:43,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 113 transitions, 466 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 14:04:43,244 INFO L231 Difference]: Finished difference. Result has 104 places, 105 transitions, 272 flow [2022-12-13 14:04:43,244 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=679, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=104, PETRI_TRANSITIONS=105} [2022-12-13 14:04:43,245 INFO L288 CegarLoopForPetriNet]: 101 programPoint places, 3 predicate places. [2022-12-13 14:04:43,245 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 105 transitions, 272 flow [2022-12-13 14:04:43,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 325.3333333333333) internal successors, (976), 3 states have internal predecessors, (976), 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 14:04:43,245 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:04:43,245 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 14:04:43,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 14:04:43,246 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 14:04:43,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:04:43,246 INFO L85 PathProgramCache]: Analyzing trace with hash -231005287, now seen corresponding path program 1 times [2022-12-13 14:04:43,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:04:43,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907946569] [2022-12-13 14:04:43,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:04:43,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:04:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:04:43,329 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:04:43,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:04:43,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907946569] [2022-12-13 14:04:43,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907946569] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:04:43,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085327935] [2022-12-13 14:04:43,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:04:43,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:04:43,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc4b16b-f0d8-45c8-bcef-e2d782ff8167/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:04:43,331 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc4b16b-f0d8-45c8-bcef-e2d782ff8167/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:04:43,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc4b16b-f0d8-45c8-bcef-e2d782ff8167/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 14:04:43,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:04:43,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 14:04:43,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:04:43,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:04:43,459 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:04:43,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085327935] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:04:43,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:04:43,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-12-13 14:04:43,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132463393] [2022-12-13 14:04:43,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:04:43,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:04:43,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:04:43,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:04:43,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:04:43,472 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 679 [2022-12-13 14:04:43,474 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 105 transitions, 272 flow. Second operand has 4 states, 4 states have (on average 325.75) internal successors, (1303), 4 states have internal predecessors, (1303), 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 14:04:43,474 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:04:43,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 679 [2022-12-13 14:04:43,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:06:31,703 INFO L130 PetriNetUnfolder]: 1199021/1597846 cut-off events. [2022-12-13 14:06:31,704 INFO L131 PetriNetUnfolder]: For 54726/54726 co-relation queries the response was YES. [2022-12-13 14:06:35,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3143150 conditions, 1597846 events. 1199021/1597846 cut-off events. For 54726/54726 co-relation queries the response was YES. Maximal size of possible extension queue 36296. Compared 12975596 event pairs, 846492 based on Foata normal form. 0/1227562 useless extension candidates. Maximal degree in co-relation 591921. Up to 1520913 conditions per place. [2022-12-13 14:06:40,077 INFO L137 encePairwiseOnDemand]: 676/679 looper letters, 93 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2022-12-13 14:06:40,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 112 transitions, 474 flow [2022-12-13 14:06:40,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:06:40,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 14:06:40,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1392 transitions. [2022-12-13 14:06:40,081 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5125184094256259 [2022-12-13 14:06:40,081 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1392 transitions. [2022-12-13 14:06:40,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1392 transitions. [2022-12-13 14:06:40,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:06:40,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1392 transitions. [2022-12-13 14:06:40,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 348.0) internal successors, (1392), 4 states have internal predecessors, (1392), 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 14:06:40,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 679.0) internal successors, (3395), 5 states have internal predecessors, (3395), 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 14:06:40,089 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 679.0) internal successors, (3395), 5 states have internal predecessors, (3395), 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 14:06:40,090 INFO L175 Difference]: Start difference. First operand has 104 places, 105 transitions, 272 flow. Second operand 4 states and 1392 transitions. [2022-12-13 14:06:40,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 112 transitions, 474 flow [2022-12-13 14:06:40,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 112 transitions, 472 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 14:06:40,170 INFO L231 Difference]: Finished difference. Result has 105 places, 104 transitions, 270 flow [2022-12-13 14:06:40,170 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=679, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=270, PETRI_PLACES=105, PETRI_TRANSITIONS=104} [2022-12-13 14:06:40,171 INFO L288 CegarLoopForPetriNet]: 101 programPoint places, 4 predicate places. [2022-12-13 14:06:40,171 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 104 transitions, 270 flow [2022-12-13 14:06:40,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 325.75) internal successors, (1303), 4 states have internal predecessors, (1303), 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 14:06:40,172 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:06:40,172 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 14:06:40,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc4b16b-f0d8-45c8-bcef-e2d782ff8167/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 14:06:40,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc4b16b-f0d8-45c8-bcef-e2d782ff8167/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:06:40,373 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 14:06:40,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:06:40,375 INFO L85 PathProgramCache]: Analyzing trace with hash -231005286, now seen corresponding path program 1 times [2022-12-13 14:06:40,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:06:40,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399676141] [2022-12-13 14:06:40,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:06:40,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:06:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:40,446 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 14:06:40,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:06:40,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399676141] [2022-12-13 14:06:40,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399676141] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:06:40,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:06:40,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:06:40,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767446731] [2022-12-13 14:06:40,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:06:40,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:06:40,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:06:40,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:06:40,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:06:40,457 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 679 [2022-12-13 14:06:40,459 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 104 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 325.3333333333333) internal successors, (976), 3 states have internal predecessors, (976), 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 14:06:40,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:06:40,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 679 [2022-12-13 14:06:40,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand