./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f 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_dd5fb01a-8797-40ec-90fc-ddd6819acc0f/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5fb01a-8797-40ec-90fc-ddd6819acc0f/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5fb01a-8797-40ec-90fc-ddd6819acc0f/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5fb01a-8797-40ec-90fc-ddd6819acc0f/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5fb01a-8797-40ec-90fc-ddd6819acc0f/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5fb01a-8797-40ec-90fc-ddd6819acc0f/bin/uautomizer-tPACEb0tL8 --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 3ea4ca0f63ee44295abb2f56a10a45cd5c3c9aada41df664ec74c618092ddbca --- 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-e04fb08 [2022-11-16 11:31:57,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:31:57,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:31:57,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:31:57,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:31:57,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:31:57,410 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:31:57,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:31:57,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:31:57,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:31:57,429 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:31:57,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:31:57,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:31:57,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:31:57,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:31:57,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:31:57,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:31:57,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:31:57,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:31:57,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:31:57,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:31:57,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:31:57,456 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:31:57,457 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:31:57,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:31:57,466 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:31:57,467 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:31:57,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:31:57,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:31:57,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:31:57,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:31:57,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:31:57,474 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:31:57,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:31:57,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:31:57,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:31:57,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:31:57,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:31:57,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:31:57,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:31:57,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:31:57,482 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5fb01a-8797-40ec-90fc-ddd6819acc0f/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:31:57,518 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:31:57,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:31:57,519 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:31:57,519 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:31:57,520 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:31:57,521 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:31:57,521 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:31:57,522 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:31:57,522 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:31:57,522 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:31:57,524 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:31:57,524 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:31:57,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:31:57,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:31:57,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:31:57,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:31:57,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:31:57,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:31:57,526 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:31:57,526 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:31:57,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:31:57,526 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:31:57,527 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:31:57,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:31:57,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:31:57,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:31:57,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:31:57,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:31:57,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:31:57,530 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:31:57,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:31:57,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:31:57,531 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:31:57,531 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:31:57,532 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:31:57,532 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5fb01a-8797-40ec-90fc-ddd6819acc0f/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5fb01a-8797-40ec-90fc-ddd6819acc0f/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ea4ca0f63ee44295abb2f56a10a45cd5c3c9aada41df664ec74c618092ddbca [2022-11-16 11:31:57,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:31:57,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:31:57,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:31:57,842 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:31:57,843 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:31:57,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5fb01a-8797-40ec-90fc-ddd6819acc0f/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c [2022-11-16 11:31:57,947 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5fb01a-8797-40ec-90fc-ddd6819acc0f/bin/uautomizer-tPACEb0tL8/data/9f1268ce1/b1864b4746b74b6598d417348f2c6c01/FLAG8528424c5 [2022-11-16 11:31:58,437 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:31:58,437 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5fb01a-8797-40ec-90fc-ddd6819acc0f/sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c [2022-11-16 11:31:58,445 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5fb01a-8797-40ec-90fc-ddd6819acc0f/bin/uautomizer-tPACEb0tL8/data/9f1268ce1/b1864b4746b74b6598d417348f2c6c01/FLAG8528424c5 [2022-11-16 11:31:58,824 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5fb01a-8797-40ec-90fc-ddd6819acc0f/bin/uautomizer-tPACEb0tL8/data/9f1268ce1/b1864b4746b74b6598d417348f2c6c01 [2022-11-16 11:31:58,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:31:58,829 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:31:58,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:31:58,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:31:58,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:31:58,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:31:58" (1/1) ... [2022-11-16 11:31:58,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48867722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:58, skipping insertion in model container [2022-11-16 11:31:58,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:31:58" (1/1) ... [2022-11-16 11:31:58,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:31:58,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:31:59,082 WARN L229 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_dd5fb01a-8797-40ec-90fc-ddd6819acc0f/sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c[3019,3032] [2022-11-16 11:31:59,088 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:31:59,096 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:31:59,122 WARN L229 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_dd5fb01a-8797-40ec-90fc-ddd6819acc0f/sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c[3019,3032] [2022-11-16 11:31:59,126 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:31:59,141 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:31:59,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:59 WrapperNode [2022-11-16 11:31:59,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:31:59,143 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:31:59,143 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:31:59,143 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:31:59,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:59" (1/1) ... [2022-11-16 11:31:59,160 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:59" (1/1) ... [2022-11-16 11:31:59,186 INFO L138 Inliner]: procedures = 26, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 143 [2022-11-16 11:31:59,186 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:31:59,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:31:59,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:31:59,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:31:59,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:59" (1/1) ... [2022-11-16 11:31:59,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:59" (1/1) ... [2022-11-16 11:31:59,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:59" (1/1) ... [2022-11-16 11:31:59,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:59" (1/1) ... [2022-11-16 11:31:59,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:59" (1/1) ... [2022-11-16 11:31:59,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:59" (1/1) ... [2022-11-16 11:31:59,217 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:59" (1/1) ... [2022-11-16 11:31:59,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:59" (1/1) ... [2022-11-16 11:31:59,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:31:59,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:31:59,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:31:59,223 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:31:59,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:59" (1/1) ... [2022-11-16 11:31:59,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:31:59,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5fb01a-8797-40ec-90fc-ddd6819acc0f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:31:59,268 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5fb01a-8797-40ec-90fc-ddd6819acc0f/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:31:59,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5fb01a-8797-40ec-90fc-ddd6819acc0f/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:31:59,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:31:59,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:31:59,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:31:59,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:31:59,313 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:31:59,313 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:31:59,313 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:31:59,313 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:31:59,313 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:31:59,313 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:31:59,313 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-16 11:31:59,314 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-16 11:31:59,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:31:59,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 11:31:59,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 11:31:59,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:31:59,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:31:59,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:31:59,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:31:59,316 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:31:59,429 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:31:59,431 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:31:59,905 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:32:00,066 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:32:00,066 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 11:32:00,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:32:00 BoogieIcfgContainer [2022-11-16 11:32:00,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:32:00,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:32:00,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:32:00,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:32:00,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:31:58" (1/3) ... [2022-11-16 11:32:00,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23735c55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:32:00, skipping insertion in model container [2022-11-16 11:32:00,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:59" (2/3) ... [2022-11-16 11:32:00,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23735c55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:32:00, skipping insertion in model container [2022-11-16 11:32:00,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:32:00" (3/3) ... [2022-11-16 11:32:00,080 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-dec.wvr.c [2022-11-16 11:32:00,092 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:32:00,105 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:32:00,105 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-16 11:32:00,106 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:32:00,265 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-16 11:32:00,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 191 transitions, 414 flow [2022-11-16 11:32:00,403 INFO L130 PetriNetUnfolder]: 12/187 cut-off events. [2022-11-16 11:32:00,404 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-16 11:32:00,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 187 events. 12/187 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 204 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 152. Up to 2 conditions per place. [2022-11-16 11:32:00,412 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 191 transitions, 414 flow [2022-11-16 11:32:00,423 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 164 transitions, 349 flow [2022-11-16 11:32:00,449 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:32:00,457 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;@3e6ac28a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:32:00,457 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-16 11:32:00,473 INFO L130 PetriNetUnfolder]: 4/70 cut-off events. [2022-11-16 11:32:00,474 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:32:00,474 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:32:00,475 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:32:00,475 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 11:32:00,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:32:00,482 INFO L85 PathProgramCache]: Analyzing trace with hash 2065256142, now seen corresponding path program 1 times [2022-11-16 11:32:00,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:32:00,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98259536] [2022-11-16 11:32:00,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:32:00,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:32:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:32:00,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:32:00,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:32:00,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98259536] [2022-11-16 11:32:00,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98259536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:32:00,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:32:00,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:32:00,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452230844] [2022-11-16 11:32:00,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:32:00,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:32:00,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:32:00,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:32:00,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:32:00,992 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 191 [2022-11-16 11:32:01,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 164 transitions, 349 flow. Second operand has 4 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:01,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:32:01,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 191 [2022-11-16 11:32:01,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:32:01,761 INFO L130 PetriNetUnfolder]: 753/2208 cut-off events. [2022-11-16 11:32:01,762 INFO L131 PetriNetUnfolder]: For 332/332 co-relation queries the response was YES. [2022-11-16 11:32:01,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3502 conditions, 2208 events. 753/2208 cut-off events. For 332/332 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 16709 event pairs, 544 based on Foata normal form. 268/1821 useless extension candidates. Maximal degree in co-relation 1545. Up to 525 conditions per place. [2022-11-16 11:32:01,796 INFO L137 encePairwiseOnDemand]: 176/191 looper letters, 46 selfloop transitions, 4 changer transitions 3/178 dead transitions. [2022-11-16 11:32:01,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 178 transitions, 498 flow [2022-11-16 11:32:01,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:32:01,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:32:01,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 827 transitions. [2022-11-16 11:32:01,819 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8659685863874346 [2022-11-16 11:32:01,820 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 827 transitions. [2022-11-16 11:32:01,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 827 transitions. [2022-11-16 11:32:01,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:32:01,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 827 transitions. [2022-11-16 11:32:01,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 165.4) internal successors, (827), 5 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:01,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:01,849 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:01,851 INFO L175 Difference]: Start difference. First operand has 166 places, 164 transitions, 349 flow. Second operand 5 states and 827 transitions. [2022-11-16 11:32:01,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 178 transitions, 498 flow [2022-11-16 11:32:01,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 178 transitions, 472 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-16 11:32:01,865 INFO L231 Difference]: Finished difference. Result has 164 places, 155 transitions, 342 flow [2022-11-16 11:32:01,867 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=342, PETRI_PLACES=164, PETRI_TRANSITIONS=155} [2022-11-16 11:32:01,873 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, -2 predicate places. [2022-11-16 11:32:01,874 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 155 transitions, 342 flow [2022-11-16 11:32:01,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:01,875 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:32:01,876 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:32:01,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:32:01,877 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 11:32:01,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:32:01,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1941458503, now seen corresponding path program 1 times [2022-11-16 11:32:01,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:32:01,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207849646] [2022-11-16 11:32:01,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:32:01,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:32:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:32:02,156 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:32:02,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:32:02,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207849646] [2022-11-16 11:32:02,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207849646] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:32:02,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016893916] [2022-11-16 11:32:02,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:32:02,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:32:02,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5fb01a-8797-40ec-90fc-ddd6819acc0f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:32:02,161 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5fb01a-8797-40ec-90fc-ddd6819acc0f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:32:02,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5fb01a-8797-40ec-90fc-ddd6819acc0f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:32:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:32:02,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:32:02,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:32:02,404 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:32:02,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:32:02,496 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:32:02,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016893916] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:32:02,497 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:32:02,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 11:32:02,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021325712] [2022-11-16 11:32:02,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:32:02,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:32:02,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:32:02,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:32:02,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:32:02,508 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 191 [2022-11-16 11:32:02,510 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 155 transitions, 342 flow. Second operand has 12 states, 12 states have (on average 154.66666666666666) internal successors, (1856), 12 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:02,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:32:02,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 191 [2022-11-16 11:32:02,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:32:03,946 INFO L130 PetriNetUnfolder]: 1881/5432 cut-off events. [2022-11-16 11:32:03,948 INFO L131 PetriNetUnfolder]: For 221/221 co-relation queries the response was YES. [2022-11-16 11:32:03,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8402 conditions, 5432 events. 1881/5432 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 47054 event pairs, 1360 based on Foata normal form. 3/3819 useless extension candidates. Maximal degree in co-relation 6672. Up to 520 conditions per place. [2022-11-16 11:32:04,005 INFO L137 encePairwiseOnDemand]: 184/191 looper letters, 103 selfloop transitions, 18 changer transitions 0/246 dead transitions. [2022-11-16 11:32:04,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 246 transitions, 820 flow [2022-11-16 11:32:04,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:32:04,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 11:32:04,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2860 transitions. [2022-11-16 11:32:04,013 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8318789994182665 [2022-11-16 11:32:04,014 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2860 transitions. [2022-11-16 11:32:04,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2860 transitions. [2022-11-16 11:32:04,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:32:04,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2860 transitions. [2022-11-16 11:32:04,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 158.88888888888889) internal successors, (2860), 18 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:04,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 191.0) internal successors, (3629), 19 states have internal predecessors, (3629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:04,032 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 191.0) internal successors, (3629), 19 states have internal predecessors, (3629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:04,032 INFO L175 Difference]: Start difference. First operand has 164 places, 155 transitions, 342 flow. Second operand 18 states and 2860 transitions. [2022-11-16 11:32:04,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 246 transitions, 820 flow [2022-11-16 11:32:04,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 246 transitions, 818 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:32:04,041 INFO L231 Difference]: Finished difference. Result has 181 places, 167 transitions, 446 flow [2022-11-16 11:32:04,042 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=446, PETRI_PLACES=181, PETRI_TRANSITIONS=167} [2022-11-16 11:32:04,043 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 15 predicate places. [2022-11-16 11:32:04,043 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 167 transitions, 446 flow [2022-11-16 11:32:04,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 154.66666666666666) internal successors, (1856), 12 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:04,046 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:32:04,046 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:32:04,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5fb01a-8797-40ec-90fc-ddd6819acc0f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:32:04,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5fb01a-8797-40ec-90fc-ddd6819acc0f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:32:04,252 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 11:32:04,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:32:04,253 INFO L85 PathProgramCache]: Analyzing trace with hash 55671998, now seen corresponding path program 1 times [2022-11-16 11:32:04,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:32:04,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894567861] [2022-11-16 11:32:04,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:32:04,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:32:04,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:32:04,488 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:32:04,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:32:04,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894567861] [2022-11-16 11:32:04,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894567861] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:32:04,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493389768] [2022-11-16 11:32:04,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:32:04,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:32:04,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5fb01a-8797-40ec-90fc-ddd6819acc0f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:32:04,492 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5fb01a-8797-40ec-90fc-ddd6819acc0f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:32:04,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5fb01a-8797-40ec-90fc-ddd6819acc0f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:32:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:32:04,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:32:04,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:32:04,660 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:32:04,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:32:04,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493389768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:32:04,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:32:04,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:32:04,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622892739] [2022-11-16 11:32:04,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:32:04,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:32:04,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:32:04,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:32:04,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:32:04,664 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 191 [2022-11-16 11:32:04,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 167 transitions, 446 flow. Second operand has 6 states, 6 states have (on average 154.33333333333334) internal successors, (926), 6 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:04,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:32:04,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 191 [2022-11-16 11:32:04,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:32:05,880 INFO L130 PetriNetUnfolder]: 1881/5428 cut-off events. [2022-11-16 11:32:05,880 INFO L131 PetriNetUnfolder]: For 257/257 co-relation queries the response was YES. [2022-11-16 11:32:05,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8420 conditions, 5428 events. 1881/5428 cut-off events. For 257/257 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 47017 event pairs, 1360 based on Foata normal form. 4/3807 useless extension candidates. Maximal degree in co-relation 6721. Up to 2064 conditions per place. [2022-11-16 11:32:06,009 INFO L137 encePairwiseOnDemand]: 186/191 looper letters, 47 selfloop transitions, 11 changer transitions 0/183 dead transitions. [2022-11-16 11:32:06,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 183 transitions, 585 flow [2022-11-16 11:32:06,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:32:06,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:32:06,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1114 transitions. [2022-11-16 11:32:06,013 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8332086761406133 [2022-11-16 11:32:06,013 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1114 transitions. [2022-11-16 11:32:06,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1114 transitions. [2022-11-16 11:32:06,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:32:06,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1114 transitions. [2022-11-16 11:32:06,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 159.14285714285714) internal successors, (1114), 7 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:06,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 191.0) internal successors, (1528), 8 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:06,020 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 191.0) internal successors, (1528), 8 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:06,020 INFO L175 Difference]: Start difference. First operand has 181 places, 167 transitions, 446 flow. Second operand 7 states and 1114 transitions. [2022-11-16 11:32:06,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 183 transitions, 585 flow [2022-11-16 11:32:06,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 183 transitions, 553 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-16 11:32:06,031 INFO L231 Difference]: Finished difference. Result has 177 places, 163 transitions, 409 flow [2022-11-16 11:32:06,031 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=409, PETRI_PLACES=177, PETRI_TRANSITIONS=163} [2022-11-16 11:32:06,035 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 11 predicate places. [2022-11-16 11:32:06,035 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 163 transitions, 409 flow [2022-11-16 11:32:06,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 154.33333333333334) internal successors, (926), 6 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:06,036 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:32:06,036 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:32:06,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5fb01a-8797-40ec-90fc-ddd6819acc0f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:32:06,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5fb01a-8797-40ec-90fc-ddd6819acc0f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:32:06,242 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 11:32:06,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:32:06,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1767611398, now seen corresponding path program 1 times [2022-11-16 11:32:06,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:32:06,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033851758] [2022-11-16 11:32:06,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:32:06,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:32:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:32:06,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:32:06,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:32:06,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033851758] [2022-11-16 11:32:06,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033851758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:32:06,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:32:06,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:32:06,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196323805] [2022-11-16 11:32:06,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:32:06,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:32:06,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:32:06,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:32:06,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:32:06,337 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 191 [2022-11-16 11:32:06,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 163 transitions, 409 flow. Second operand has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:06,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:32:06,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 191 [2022-11-16 11:32:06,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:32:09,919 INFO L130 PetriNetUnfolder]: 10936/20458 cut-off events. [2022-11-16 11:32:09,920 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2022-11-16 11:32:10,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37957 conditions, 20458 events. 10936/20458 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 176817 event pairs, 5005 based on Foata normal form. 0/14513 useless extension candidates. Maximal degree in co-relation 30357. Up to 9016 conditions per place. [2022-11-16 11:32:10,201 INFO L137 encePairwiseOnDemand]: 185/191 looper letters, 59 selfloop transitions, 4 changer transitions 0/201 dead transitions. [2022-11-16 11:32:10,202 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 201 transitions, 626 flow [2022-11-16 11:32:10,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:32:10,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:32:10,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 835 transitions. [2022-11-16 11:32:10,205 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8743455497382199 [2022-11-16 11:32:10,205 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 835 transitions. [2022-11-16 11:32:10,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 835 transitions. [2022-11-16 11:32:10,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:32:10,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 835 transitions. [2022-11-16 11:32:10,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:10,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:10,212 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:10,213 INFO L175 Difference]: Start difference. First operand has 177 places, 163 transitions, 409 flow. Second operand 5 states and 835 transitions. [2022-11-16 11:32:10,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 201 transitions, 626 flow [2022-11-16 11:32:10,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 201 transitions, 612 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:32:10,219 INFO L231 Difference]: Finished difference. Result has 179 places, 166 transitions, 425 flow [2022-11-16 11:32:10,220 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=425, PETRI_PLACES=179, PETRI_TRANSITIONS=166} [2022-11-16 11:32:10,221 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 13 predicate places. [2022-11-16 11:32:10,222 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 166 transitions, 425 flow [2022-11-16 11:32:10,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:10,222 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:32:10,223 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:32:10,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:32:10,223 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 11:32:10,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:32:10,224 INFO L85 PathProgramCache]: Analyzing trace with hash -90147893, now seen corresponding path program 1 times [2022-11-16 11:32:10,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:32:10,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77162135] [2022-11-16 11:32:10,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:32:10,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:32:10,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:32:10,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:32:10,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:32:10,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77162135] [2022-11-16 11:32:10,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77162135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:32:10,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:32:10,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:32:10,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122150294] [2022-11-16 11:32:10,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:32:10,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:32:10,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:32:10,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:32:10,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:32:10,360 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 191 [2022-11-16 11:32:10,361 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 166 transitions, 425 flow. Second operand has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:10,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:32:10,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 191 [2022-11-16 11:32:10,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:32:15,190 INFO L130 PetriNetUnfolder]: 19416/31233 cut-off events. [2022-11-16 11:32:15,191 INFO L131 PetriNetUnfolder]: For 2207/2507 co-relation queries the response was YES. [2022-11-16 11:32:15,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61103 conditions, 31233 events. 19416/31233 cut-off events. For 2207/2507 co-relation queries the response was YES. Maximal size of possible extension queue 1107. Compared 264219 event pairs, 8990 based on Foata normal form. 0/21473 useless extension candidates. Maximal degree in co-relation 48872. Up to 15931 conditions per place. [2022-11-16 11:32:15,564 INFO L137 encePairwiseOnDemand]: 185/191 looper letters, 58 selfloop transitions, 4 changer transitions 0/203 dead transitions. [2022-11-16 11:32:15,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 203 transitions, 637 flow [2022-11-16 11:32:15,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:32:15,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:32:15,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 834 transitions. [2022-11-16 11:32:15,567 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8732984293193717 [2022-11-16 11:32:15,567 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 834 transitions. [2022-11-16 11:32:15,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 834 transitions. [2022-11-16 11:32:15,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:32:15,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 834 transitions. [2022-11-16 11:32:15,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 166.8) internal successors, (834), 5 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:15,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:15,572 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:15,573 INFO L175 Difference]: Start difference. First operand has 179 places, 166 transitions, 425 flow. Second operand 5 states and 834 transitions. [2022-11-16 11:32:15,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 203 transitions, 637 flow [2022-11-16 11:32:15,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 203 transitions, 635 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:32:15,581 INFO L231 Difference]: Finished difference. Result has 185 places, 169 transitions, 453 flow [2022-11-16 11:32:15,582 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=453, PETRI_PLACES=185, PETRI_TRANSITIONS=169} [2022-11-16 11:32:15,585 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 19 predicate places. [2022-11-16 11:32:15,585 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 169 transitions, 453 flow [2022-11-16 11:32:15,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:15,587 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:32:15,588 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:32:15,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:32:15,588 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 11:32:15,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:32:15,589 INFO L85 PathProgramCache]: Analyzing trace with hash -61331000, now seen corresponding path program 1 times [2022-11-16 11:32:15,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:32:15,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201354485] [2022-11-16 11:32:15,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:32:15,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:32:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:32:15,720 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:32:15,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:32:15,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201354485] [2022-11-16 11:32:15,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201354485] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:32:15,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239590031] [2022-11-16 11:32:15,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:32:15,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:32:15,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5fb01a-8797-40ec-90fc-ddd6819acc0f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:32:15,727 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5fb01a-8797-40ec-90fc-ddd6819acc0f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:32:15,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5fb01a-8797-40ec-90fc-ddd6819acc0f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:32:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:32:15,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:32:15,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:32:15,965 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:32:15,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:32:15,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239590031] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:32:15,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:32:15,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-16 11:32:15,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006403366] [2022-11-16 11:32:15,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:32:15,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:32:15,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:32:15,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:32:15,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:32:15,971 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 191 [2022-11-16 11:32:15,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 169 transitions, 453 flow. Second operand has 7 states, 7 states have (on average 142.71428571428572) internal successors, (999), 7 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:15,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:32:15,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 191 [2022-11-16 11:32:15,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:32:24,252 INFO L130 PetriNetUnfolder]: 30303/59967 cut-off events. [2022-11-16 11:32:24,255 INFO L131 PetriNetUnfolder]: For 8335/8975 co-relation queries the response was YES. [2022-11-16 11:32:24,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114215 conditions, 59967 events. 30303/59967 cut-off events. For 8335/8975 co-relation queries the response was YES. Maximal size of possible extension queue 1597. Compared 629270 event pairs, 23608 based on Foata normal form. 0/41713 useless extension candidates. Maximal degree in co-relation 106340. Up to 38005 conditions per place. [2022-11-16 11:32:24,940 INFO L137 encePairwiseOnDemand]: 182/191 looper letters, 77 selfloop transitions, 8 changer transitions 0/205 dead transitions. [2022-11-16 11:32:24,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 205 transitions, 709 flow [2022-11-16 11:32:24,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:32:24,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:32:24,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1198 transitions. [2022-11-16 11:32:24,946 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7840314136125655 [2022-11-16 11:32:24,946 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1198 transitions. [2022-11-16 11:32:24,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1198 transitions. [2022-11-16 11:32:24,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:32:24,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1198 transitions. [2022-11-16 11:32:24,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 149.75) internal successors, (1198), 8 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:24,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 191.0) internal successors, (1719), 9 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:24,978 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 191.0) internal successors, (1719), 9 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:24,980 INFO L175 Difference]: Start difference. First operand has 185 places, 169 transitions, 453 flow. Second operand 8 states and 1198 transitions. [2022-11-16 11:32:24,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 205 transitions, 709 flow [2022-11-16 11:32:25,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 205 transitions, 707 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:32:25,149 INFO L231 Difference]: Finished difference. Result has 194 places, 171 transitions, 485 flow [2022-11-16 11:32:25,150 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=485, PETRI_PLACES=194, PETRI_TRANSITIONS=171} [2022-11-16 11:32:25,151 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 28 predicate places. [2022-11-16 11:32:25,151 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 171 transitions, 485 flow [2022-11-16 11:32:25,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 142.71428571428572) internal successors, (999), 7 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:25,152 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:32:25,152 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:32:25,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5fb01a-8797-40ec-90fc-ddd6819acc0f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:32:25,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5fb01a-8797-40ec-90fc-ddd6819acc0f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:32:25,359 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 11:32:25,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:32:25,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1203857392, now seen corresponding path program 1 times [2022-11-16 11:32:25,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:32:25,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903210968] [2022-11-16 11:32:25,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:32:25,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:32:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:32:25,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:32:25,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:32:25,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903210968] [2022-11-16 11:32:25,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903210968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:32:25,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:32:25,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:32:25,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929967712] [2022-11-16 11:32:25,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:32:25,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:32:25,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:32:25,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:32:25,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:32:25,562 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 191 [2022-11-16 11:32:25,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 171 transitions, 485 flow. Second operand has 7 states, 7 states have (on average 142.42857142857142) internal successors, (997), 7 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:25,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:32:25,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 191 [2022-11-16 11:32:25,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:32:32,668 INFO L130 PetriNetUnfolder]: 25786/48481 cut-off events. [2022-11-16 11:32:32,668 INFO L131 PetriNetUnfolder]: For 4522/4616 co-relation queries the response was YES. [2022-11-16 11:32:32,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92640 conditions, 48481 events. 25786/48481 cut-off events. For 4522/4616 co-relation queries the response was YES. Maximal size of possible extension queue 1653. Compared 494718 event pairs, 24477 based on Foata normal form. 94/36773 useless extension candidates. Maximal degree in co-relation 89273. Up to 34745 conditions per place. [2022-11-16 11:32:33,131 INFO L137 encePairwiseOnDemand]: 182/191 looper letters, 70 selfloop transitions, 8 changer transitions 0/201 dead transitions. [2022-11-16 11:32:33,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 201 transitions, 713 flow [2022-11-16 11:32:33,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:32:33,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:32:33,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1193 transitions. [2022-11-16 11:32:33,136 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7807591623036649 [2022-11-16 11:32:33,136 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1193 transitions. [2022-11-16 11:32:33,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1193 transitions. [2022-11-16 11:32:33,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:32:33,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1193 transitions. [2022-11-16 11:32:33,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 149.125) internal successors, (1193), 8 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:33,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 191.0) internal successors, (1719), 9 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:33,145 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 191.0) internal successors, (1719), 9 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:33,145 INFO L175 Difference]: Start difference. First operand has 194 places, 171 transitions, 485 flow. Second operand 8 states and 1193 transitions. [2022-11-16 11:32:33,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 201 transitions, 713 flow [2022-11-16 11:32:33,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 201 transitions, 703 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:32:33,178 INFO L231 Difference]: Finished difference. Result has 199 places, 172 transitions, 500 flow [2022-11-16 11:32:33,179 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=500, PETRI_PLACES=199, PETRI_TRANSITIONS=172} [2022-11-16 11:32:33,180 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 33 predicate places. [2022-11-16 11:32:33,180 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 172 transitions, 500 flow [2022-11-16 11:32:33,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 142.42857142857142) internal successors, (997), 7 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:33,181 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:32:33,181 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:32:33,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:32:33,181 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 11:32:33,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:32:33,182 INFO L85 PathProgramCache]: Analyzing trace with hash 2078401902, now seen corresponding path program 1 times [2022-11-16 11:32:33,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:32:33,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296737023] [2022-11-16 11:32:33,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:32:33,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:32:33,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:32:33,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:32:33,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:32:33,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296737023] [2022-11-16 11:32:33,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296737023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:32:33,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:32:33,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:32:33,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914920795] [2022-11-16 11:32:33,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:32:33,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:32:33,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:32:33,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:32:33,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:32:33,271 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 191 [2022-11-16 11:32:33,272 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 172 transitions, 500 flow. Second operand has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:33,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:32:33,272 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 191 [2022-11-16 11:32:33,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:32:35,039 INFO L130 PetriNetUnfolder]: 3211/10784 cut-off events. [2022-11-16 11:32:35,039 INFO L131 PetriNetUnfolder]: For 1072/1072 co-relation queries the response was YES. [2022-11-16 11:32:35,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18435 conditions, 10784 events. 3211/10784 cut-off events. For 1072/1072 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 114596 event pairs, 463 based on Foata normal form. 0/8660 useless extension candidates. Maximal degree in co-relation 17637. Up to 3707 conditions per place. [2022-11-16 11:32:35,140 INFO L137 encePairwiseOnDemand]: 188/191 looper letters, 22 selfloop transitions, 2 changer transitions 0/180 dead transitions. [2022-11-16 11:32:35,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 180 transitions, 568 flow [2022-11-16 11:32:35,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:32:35,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:32:35,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 514 transitions. [2022-11-16 11:32:35,143 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8970331588132635 [2022-11-16 11:32:35,144 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 514 transitions. [2022-11-16 11:32:35,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 514 transitions. [2022-11-16 11:32:35,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:32:35,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 514 transitions. [2022-11-16 11:32:35,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:35,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:35,148 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:35,149 INFO L175 Difference]: Start difference. First operand has 199 places, 172 transitions, 500 flow. Second operand 3 states and 514 transitions. [2022-11-16 11:32:35,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 180 transitions, 568 flow [2022-11-16 11:32:35,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 180 transitions, 555 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:32:35,207 INFO L231 Difference]: Finished difference. Result has 197 places, 172 transitions, 495 flow [2022-11-16 11:32:35,208 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=495, PETRI_PLACES=197, PETRI_TRANSITIONS=172} [2022-11-16 11:32:35,208 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 31 predicate places. [2022-11-16 11:32:35,209 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 172 transitions, 495 flow [2022-11-16 11:32:35,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:35,209 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:32:35,209 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:32:35,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:32:35,210 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 11:32:35,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:32:35,210 INFO L85 PathProgramCache]: Analyzing trace with hash 5949090, now seen corresponding path program 1 times [2022-11-16 11:32:35,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:32:35,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043261981] [2022-11-16 11:32:35,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:32:35,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:32:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:32:35,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:32:35,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:32:35,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043261981] [2022-11-16 11:32:35,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043261981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:32:35,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:32:35,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:32:35,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497134706] [2022-11-16 11:32:35,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:32:35,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:32:35,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:32:35,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:32:35,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:32:35,370 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 191 [2022-11-16 11:32:35,371 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 172 transitions, 495 flow. Second operand has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:35,371 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:32:35,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 191 [2022-11-16 11:32:35,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:32:37,302 INFO L130 PetriNetUnfolder]: 3487/10998 cut-off events. [2022-11-16 11:32:37,302 INFO L131 PetriNetUnfolder]: For 1763/1763 co-relation queries the response was YES. [2022-11-16 11:32:37,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20125 conditions, 10998 events. 3487/10998 cut-off events. For 1763/1763 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 114280 event pairs, 753 based on Foata normal form. 78/9583 useless extension candidates. Maximal degree in co-relation 19228. Up to 3706 conditions per place. [2022-11-16 11:32:37,397 INFO L137 encePairwiseOnDemand]: 188/191 looper letters, 23 selfloop transitions, 2 changer transitions 0/180 dead transitions. [2022-11-16 11:32:37,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 180 transitions, 568 flow [2022-11-16 11:32:37,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:32:37,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:32:37,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2022-11-16 11:32:37,400 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.893542757417103 [2022-11-16 11:32:37,400 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2022-11-16 11:32:37,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2022-11-16 11:32:37,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:32:37,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2022-11-16 11:32:37,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:37,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:37,403 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:37,403 INFO L175 Difference]: Start difference. First operand has 197 places, 172 transitions, 495 flow. Second operand 3 states and 512 transitions. [2022-11-16 11:32:37,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 180 transitions, 568 flow [2022-11-16 11:32:37,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 180 transitions, 562 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:32:37,442 INFO L231 Difference]: Finished difference. Result has 198 places, 172 transitions, 499 flow [2022-11-16 11:32:37,443 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=499, PETRI_PLACES=198, PETRI_TRANSITIONS=172} [2022-11-16 11:32:37,444 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 32 predicate places. [2022-11-16 11:32:37,444 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 172 transitions, 499 flow [2022-11-16 11:32:37,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:37,444 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:32:37,445 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:32:37,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:32:37,445 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 11:32:37,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:32:37,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1373293453, now seen corresponding path program 1 times [2022-11-16 11:32:37,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:32:37,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195259832] [2022-11-16 11:32:37,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:32:37,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:32:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:32:37,570 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:32:37,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:32:37,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195259832] [2022-11-16 11:32:37,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195259832] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:32:37,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796205280] [2022-11-16 11:32:37,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:32:37,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:32:37,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5fb01a-8797-40ec-90fc-ddd6819acc0f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:32:37,572 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5fb01a-8797-40ec-90fc-ddd6819acc0f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:32:37,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5fb01a-8797-40ec-90fc-ddd6819acc0f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:32:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:32:37,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:32:37,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:32:37,827 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:32:37,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:32:37,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796205280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:32:37,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:32:37,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-16 11:32:37,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419956568] [2022-11-16 11:32:37,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:32:37,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:32:37,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:32:37,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:32:37,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:32:37,831 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 191 [2022-11-16 11:32:37,833 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 172 transitions, 499 flow. Second operand has 7 states, 7 states have (on average 142.85714285714286) internal successors, (1000), 7 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:37,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:32:37,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 191 [2022-11-16 11:32:37,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand