./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b 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_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN --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 586b4acd2b590d05e6c872ab286b63f1e9a66197df0a80de4a917f3d7db6c786 --- 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-6b4ec56 [2022-11-20 12:46:20,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:46:20,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:46:20,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:46:20,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:46:20,482 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:46:20,485 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:46:20,489 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:46:20,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:46:20,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:46:20,499 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:46:20,501 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:46:20,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:46:20,504 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:46:20,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:46:20,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:46:20,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:46:20,511 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:46:20,513 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:46:20,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:46:20,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:46:20,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:46:20,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:46:20,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:46:20,538 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:46:20,538 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:46:20,539 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:46:20,541 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:46:20,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:46:20,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:46:20,543 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:46:20,544 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:46:20,546 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:46:20,548 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:46:20,549 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:46:20,550 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:46:20,551 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:46:20,551 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:46:20,551 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:46:20,552 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:46:20,553 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:46:20,554 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 12:46:20,600 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:46:20,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:46:20,601 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:46:20,601 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:46:20,602 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:46:20,602 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:46:20,603 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:46:20,604 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:46:20,604 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:46:20,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:46:20,606 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:46:20,606 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:46:20,606 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:46:20,607 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:46:20,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:46:20,607 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:46:20,607 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:46:20,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:46:20,608 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 12:46:20,608 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:46:20,609 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:46:20,609 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:46:20,609 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:46:20,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:46:20,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:46:20,610 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:46:20,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:46:20,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:46:20,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:46:20,611 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:46:20,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:46:20,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:46:20,612 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:46:20,613 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:46:20,613 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:46:20,613 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_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 586b4acd2b590d05e6c872ab286b63f1e9a66197df0a80de4a917f3d7db6c786 [2022-11-20 12:46:20,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:46:20,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:46:20,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:46:20,952 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:46:20,952 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:46:20,954 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2022-11-20 12:46:24,182 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:46:24,529 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:46:24,530 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2022-11-20 12:46:24,540 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/data/9a0b18da2/465dcfb700534e258def7e8243c857b7/FLAG4261c00c9 [2022-11-20 12:46:24,570 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/data/9a0b18da2/465dcfb700534e258def7e8243c857b7 [2022-11-20 12:46:24,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:46:24,576 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:46:24,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:46:24,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:46:24,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:46:24,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:46:24" (1/1) ... [2022-11-20 12:46:24,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16c878e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:24, skipping insertion in model container [2022-11-20 12:46:24,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:46:24" (1/1) ... [2022-11-20 12:46:24,598 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:46:24,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:46:24,985 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c[6450,6463] [2022-11-20 12:46:24,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:46:25,007 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:46:25,061 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c[6450,6463] [2022-11-20 12:46:25,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:46:25,086 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:46:25,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:25 WrapperNode [2022-11-20 12:46:25,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:46:25,088 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:46:25,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:46:25,089 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:46:25,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:25" (1/1) ... [2022-11-20 12:46:25,137 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:25" (1/1) ... [2022-11-20 12:46:25,201 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 706 [2022-11-20 12:46:25,202 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:46:25,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:46:25,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:46:25,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:46:25,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:25" (1/1) ... [2022-11-20 12:46:25,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:25" (1/1) ... [2022-11-20 12:46:25,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:25" (1/1) ... [2022-11-20 12:46:25,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:25" (1/1) ... [2022-11-20 12:46:25,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:25" (1/1) ... [2022-11-20 12:46:25,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:25" (1/1) ... [2022-11-20 12:46:25,264 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:25" (1/1) ... [2022-11-20 12:46:25,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:25" (1/1) ... [2022-11-20 12:46:25,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:46:25,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:46:25,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:46:25,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:46:25,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:25" (1/1) ... [2022-11-20 12:46:25,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:46:25,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:46:25,342 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:46:25,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:46:25,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:46:25,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:46:25,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:46:25,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:46:25,413 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 12:46:25,413 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 12:46:25,413 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 12:46:25,414 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 12:46:25,414 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 12:46:25,414 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 12:46:25,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:46:25,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:46:25,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:46:25,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:46:25,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:46:25,418 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:46:25,620 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:46:25,623 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:46:27,110 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:46:27,139 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:46:27,140 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-20 12:46:27,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:46:27 BoogieIcfgContainer [2022-11-20 12:46:27,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:46:27,150 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:46:27,150 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:46:27,154 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:46:27,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:46:24" (1/3) ... [2022-11-20 12:46:27,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@533d5510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:46:27, skipping insertion in model container [2022-11-20 12:46:27,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:25" (2/3) ... [2022-11-20 12:46:27,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@533d5510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:46:27, skipping insertion in model container [2022-11-20 12:46:27,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:46:27" (3/3) ... [2022-11-20 12:46:27,161 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-trans.wvr.c [2022-11-20 12:46:27,181 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:46:27,194 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:46:27,194 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2022-11-20 12:46:27,194 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:46:27,486 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 12:46:27,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 889 places, 970 transitions, 1964 flow [2022-11-20 12:46:28,248 INFO L130 PetriNetUnfolder]: 91/967 cut-off events. [2022-11-20 12:46:28,249 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 12:46:28,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 980 conditions, 967 events. 91/967 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4103 event pairs, 0 based on Foata normal form. 0/816 useless extension candidates. Maximal degree in co-relation 730. Up to 2 conditions per place. [2022-11-20 12:46:28,299 INFO L82 GeneralOperation]: Start removeDead. Operand has 889 places, 970 transitions, 1964 flow [2022-11-20 12:46:28,335 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 866 places, 946 transitions, 1907 flow [2022-11-20 12:46:28,353 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:46:28,362 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;@210b2a7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:46:28,363 INFO L358 AbstractCegarLoop]: Starting to check reachability of 117 error locations. [2022-11-20 12:46:28,409 INFO L130 PetriNetUnfolder]: 3/118 cut-off events. [2022-11-20 12:46:28,409 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:46:28,409 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:46:28,410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:46:28,410 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-20 12:46:28,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:46:28,419 INFO L85 PathProgramCache]: Analyzing trace with hash -514020272, now seen corresponding path program 1 times [2022-11-20 12:46:28,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:46:28,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230718802] [2022-11-20 12:46:28,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:46:28,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:46:28,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:29,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:46:29,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:46:29,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230718802] [2022-11-20 12:46:29,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230718802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:46:29,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:46:29,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:46:29,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195672270] [2022-11-20 12:46:29,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:46:29,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:46:29,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:46:29,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:46:29,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:46:29,086 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 890 out of 970 [2022-11-20 12:46:29,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 866 places, 946 transitions, 1907 flow. Second operand has 4 states, 4 states have (on average 891.5) internal successors, (3566), 4 states have internal predecessors, (3566), 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) [2022-11-20 12:46:29,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:46:29,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 890 of 970 [2022-11-20 12:46:29,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:46:30,350 INFO L130 PetriNetUnfolder]: 107/1669 cut-off events. [2022-11-20 12:46:30,350 INFO L131 PetriNetUnfolder]: For 22/26 co-relation queries the response was YES. [2022-11-20 12:46:30,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1762 conditions, 1669 events. 107/1669 cut-off events. For 22/26 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 10567 event pairs, 0 based on Foata normal form. 104/1497 useless extension candidates. Maximal degree in co-relation 1267. Up to 44 conditions per place. [2022-11-20 12:46:30,449 INFO L137 encePairwiseOnDemand]: 914/970 looper letters, 58 selfloop transitions, 14 changer transitions 6/941 dead transitions. [2022-11-20 12:46:30,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 870 places, 941 transitions, 2056 flow [2022-11-20 12:46:30,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:46:30,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:46:30,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 4594 transitions. [2022-11-20 12:46:30,481 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9472164948453609 [2022-11-20 12:46:30,482 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 4594 transitions. [2022-11-20 12:46:30,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 4594 transitions. [2022-11-20 12:46:30,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:46:30,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 4594 transitions. [2022-11-20 12:46:30,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 918.8) internal successors, (4594), 5 states have internal predecessors, (4594), 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) [2022-11-20 12:46:30,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 970.0) internal successors, (5820), 6 states have internal predecessors, (5820), 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) [2022-11-20 12:46:30,532 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 970.0) internal successors, (5820), 6 states have internal predecessors, (5820), 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) [2022-11-20 12:46:30,534 INFO L175 Difference]: Start difference. First operand has 866 places, 946 transitions, 1907 flow. Second operand 5 states and 4594 transitions. [2022-11-20 12:46:30,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 870 places, 941 transitions, 2056 flow [2022-11-20 12:46:30,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 865 places, 941 transitions, 2038 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:46:30,571 INFO L231 Difference]: Finished difference. Result has 868 places, 915 transitions, 1918 flow [2022-11-20 12:46:30,575 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=1826, PETRI_DIFFERENCE_MINUEND_PLACES=861, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=910, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=896, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1918, PETRI_PLACES=868, PETRI_TRANSITIONS=915} [2022-11-20 12:46:30,580 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 2 predicate places. [2022-11-20 12:46:30,580 INFO L495 AbstractCegarLoop]: Abstraction has has 868 places, 915 transitions, 1918 flow [2022-11-20 12:46:30,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 891.5) internal successors, (3566), 4 states have internal predecessors, (3566), 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) [2022-11-20 12:46:30,583 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:46:30,584 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:46:30,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:46:30,584 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-20 12:46:30,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:46:30,585 INFO L85 PathProgramCache]: Analyzing trace with hash -205722557, now seen corresponding path program 1 times [2022-11-20 12:46:30,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:46:30,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816967428] [2022-11-20 12:46:30,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:46:30,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:46:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:30,949 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:46:30,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:46:30,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816967428] [2022-11-20 12:46:30,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816967428] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:46:30,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270901137] [2022-11-20 12:46:30,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:46:30,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:46:30,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:46:30,955 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:46:30,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:46:31,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:31,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:46:31,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:46:31,283 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:46:31,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:46:31,385 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:46:31,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270901137] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:46:31,386 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:46:31,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 12:46:31,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576842109] [2022-11-20 12:46:31,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:46:31,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:46:31,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:46:31,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:46:31,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:46:31,415 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 890 out of 970 [2022-11-20 12:46:31,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 868 places, 915 transitions, 1918 flow. Second operand has 12 states, 12 states have (on average 892.6666666666666) internal successors, (10712), 12 states have internal predecessors, (10712), 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) [2022-11-20 12:46:31,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:46:31,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 890 of 970 [2022-11-20 12:46:31,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:46:34,705 INFO L130 PetriNetUnfolder]: 266/3946 cut-off events. [2022-11-20 12:46:34,706 INFO L131 PetriNetUnfolder]: For 53/63 co-relation queries the response was YES. [2022-11-20 12:46:34,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4224 conditions, 3946 events. 266/3946 cut-off events. For 53/63 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 34022 event pairs, 0 based on Foata normal form. 9/3295 useless extension candidates. Maximal degree in co-relation 2984. Up to 35 conditions per place. [2022-11-20 12:46:34,874 INFO L137 encePairwiseOnDemand]: 947/970 looper letters, 109 selfloop transitions, 62 changer transitions 0/1034 dead transitions. [2022-11-20 12:46:34,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 879 places, 1034 transitions, 2600 flow [2022-11-20 12:46:34,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:46:34,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 12:46:34,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 16200 transitions. [2022-11-20 12:46:34,902 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9278350515463918 [2022-11-20 12:46:34,902 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 16200 transitions. [2022-11-20 12:46:34,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 16200 transitions. [2022-11-20 12:46:34,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:46:34,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 16200 transitions. [2022-11-20 12:46:34,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 900.0) internal successors, (16200), 18 states have internal predecessors, (16200), 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) [2022-11-20 12:46:34,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 970.0) internal successors, (18430), 19 states have internal predecessors, (18430), 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) [2022-11-20 12:46:34,997 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 970.0) internal successors, (18430), 19 states have internal predecessors, (18430), 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) [2022-11-20 12:46:34,997 INFO L175 Difference]: Start difference. First operand has 868 places, 915 transitions, 1918 flow. Second operand 18 states and 16200 transitions. [2022-11-20 12:46:34,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 879 places, 1034 transitions, 2600 flow [2022-11-20 12:46:35,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 878 places, 1034 transitions, 2592 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:46:35,023 INFO L231 Difference]: Finished difference. Result has 882 places, 957 transitions, 2280 flow [2022-11-20 12:46:35,025 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=1910, PETRI_DIFFERENCE_MINUEND_PLACES=861, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=915, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=884, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2280, PETRI_PLACES=882, PETRI_TRANSITIONS=957} [2022-11-20 12:46:35,026 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 16 predicate places. [2022-11-20 12:46:35,026 INFO L495 AbstractCegarLoop]: Abstraction has has 882 places, 957 transitions, 2280 flow [2022-11-20 12:46:35,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 892.6666666666666) internal successors, (10712), 12 states have internal predecessors, (10712), 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) [2022-11-20 12:46:35,030 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:46:35,031 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:46:35,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:46:35,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-20 12:46:35,238 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-20 12:46:35,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:46:35,239 INFO L85 PathProgramCache]: Analyzing trace with hash -2082429842, now seen corresponding path program 1 times [2022-11-20 12:46:35,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:46:35,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400103031] [2022-11-20 12:46:35,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:46:35,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:46:35,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:35,535 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:46:35,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:46:35,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400103031] [2022-11-20 12:46:35,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400103031] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:46:35,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615383529] [2022-11-20 12:46:35,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:46:35,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:46:35,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:46:35,538 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:46:35,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:46:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:35,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:46:35,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:46:35,789 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:46:35,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:46:35,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615383529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:46:35,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:46:35,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 12:46:35,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554726280] [2022-11-20 12:46:35,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:46:35,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:46:35,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:46:35,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:46:35,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:46:35,805 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 890 out of 970 [2022-11-20 12:46:35,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 882 places, 957 transitions, 2280 flow. Second operand has 6 states, 6 states have (on average 892.3333333333334) internal successors, (5354), 6 states have internal predecessors, (5354), 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) [2022-11-20 12:46:35,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:46:35,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 890 of 970 [2022-11-20 12:46:35,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:46:38,271 INFO L130 PetriNetUnfolder]: 266/3934 cut-off events. [2022-11-20 12:46:38,271 INFO L131 PetriNetUnfolder]: For 205/215 co-relation queries the response was YES. [2022-11-20 12:46:38,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4280 conditions, 3934 events. 266/3934 cut-off events. For 205/215 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 33923 event pairs, 0 based on Foata normal form. 12/3286 useless extension candidates. Maximal degree in co-relation 3389. Up to 68 conditions per place. [2022-11-20 12:46:38,493 INFO L137 encePairwiseOnDemand]: 953/970 looper letters, 59 selfloop transitions, 43 changer transitions 0/965 dead transitions. [2022-11-20 12:46:38,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 881 places, 965 transitions, 2455 flow [2022-11-20 12:46:38,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:46:38,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:46:38,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6302 transitions. [2022-11-20 12:46:38,507 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9281296023564065 [2022-11-20 12:46:38,508 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6302 transitions. [2022-11-20 12:46:38,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6302 transitions. [2022-11-20 12:46:38,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:46:38,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6302 transitions. [2022-11-20 12:46:38,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 900.2857142857143) internal successors, (6302), 7 states have internal predecessors, (6302), 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) [2022-11-20 12:46:38,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 970.0) internal successors, (7760), 8 states have internal predecessors, (7760), 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) [2022-11-20 12:46:38,540 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 970.0) internal successors, (7760), 8 states have internal predecessors, (7760), 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) [2022-11-20 12:46:38,541 INFO L175 Difference]: Start difference. First operand has 882 places, 957 transitions, 2280 flow. Second operand 7 states and 6302 transitions. [2022-11-20 12:46:38,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 881 places, 965 transitions, 2455 flow [2022-11-20 12:46:38,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 876 places, 965 transitions, 2339 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-20 12:46:38,568 INFO L231 Difference]: Finished difference. Result has 876 places, 945 transitions, 2169 flow [2022-11-20 12:46:38,570 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2083, PETRI_DIFFERENCE_MINUEND_PLACES=870, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=945, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=902, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2169, PETRI_PLACES=876, PETRI_TRANSITIONS=945} [2022-11-20 12:46:38,572 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 10 predicate places. [2022-11-20 12:46:38,573 INFO L495 AbstractCegarLoop]: Abstraction has has 876 places, 945 transitions, 2169 flow [2022-11-20 12:46:38,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 892.3333333333334) internal successors, (5354), 6 states have internal predecessors, (5354), 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) [2022-11-20 12:46:38,575 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:46:38,575 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:46:38,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:46:38,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:46:38,782 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-20 12:46:38,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:46:38,783 INFO L85 PathProgramCache]: Analyzing trace with hash 986700316, now seen corresponding path program 2 times [2022-11-20 12:46:38,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:46:38,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954113401] [2022-11-20 12:46:38,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:46:38,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:46:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:39,155 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:46:39,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:46:39,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954113401] [2022-11-20 12:46:39,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954113401] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:46:39,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477898539] [2022-11-20 12:46:39,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:46:39,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:46:39,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:46:39,163 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:46:39,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:46:39,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:46:39,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:46:39,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:46:39,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:46:39,461 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-20 12:46:39,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:46:39,874 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-20 12:46:39,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477898539] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:46:39,875 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:46:39,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 17 [2022-11-20 12:46:39,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813821143] [2022-11-20 12:46:39,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:46:39,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 12:46:39,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:46:39,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 12:46:39,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:46:39,895 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 878 out of 970 [2022-11-20 12:46:39,911 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 876 places, 945 transitions, 2169 flow. Second operand has 18 states, 18 states have (on average 881.8333333333334) internal successors, (15873), 18 states have internal predecessors, (15873), 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) [2022-11-20 12:46:39,911 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:46:39,911 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 878 of 970 [2022-11-20 12:46:39,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:46:43,131 INFO L130 PetriNetUnfolder]: 319/4672 cut-off events. [2022-11-20 12:46:43,132 INFO L131 PetriNetUnfolder]: For 189/201 co-relation queries the response was YES. [2022-11-20 12:46:43,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5039 conditions, 4672 events. 319/4672 cut-off events. For 189/201 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 42129 event pairs, 0 based on Foata normal form. 3/3883 useless extension candidates. Maximal degree in co-relation 3719. Up to 22 conditions per place. [2022-11-20 12:46:43,383 INFO L137 encePairwiseOnDemand]: 946/970 looper letters, 127 selfloop transitions, 67 changer transitions 0/1045 dead transitions. [2022-11-20 12:46:43,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 892 places, 1045 transitions, 2804 flow [2022-11-20 12:46:43,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 12:46:43,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-20 12:46:43,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 17757 transitions. [2022-11-20 12:46:43,432 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9153092783505155 [2022-11-20 12:46:43,433 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 17757 transitions. [2022-11-20 12:46:43,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 17757 transitions. [2022-11-20 12:46:43,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:46:43,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 17757 transitions. [2022-11-20 12:46:43,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 887.85) internal successors, (17757), 20 states have internal predecessors, (17757), 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) [2022-11-20 12:46:43,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 970.0) internal successors, (20370), 21 states have internal predecessors, (20370), 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) [2022-11-20 12:46:43,541 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 970.0) internal successors, (20370), 21 states have internal predecessors, (20370), 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) [2022-11-20 12:46:43,542 INFO L175 Difference]: Start difference. First operand has 876 places, 945 transitions, 2169 flow. Second operand 20 states and 17757 transitions. [2022-11-20 12:46:43,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 892 places, 1045 transitions, 2804 flow [2022-11-20 12:46:43,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 883 places, 1045 transitions, 2721 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-20 12:46:43,570 INFO L231 Difference]: Finished difference. Result has 884 places, 950 transitions, 2243 flow [2022-11-20 12:46:43,572 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2061, PETRI_DIFFERENCE_MINUEND_PLACES=864, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=942, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=880, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2243, PETRI_PLACES=884, PETRI_TRANSITIONS=950} [2022-11-20 12:46:43,574 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 18 predicate places. [2022-11-20 12:46:43,574 INFO L495 AbstractCegarLoop]: Abstraction has has 884 places, 950 transitions, 2243 flow [2022-11-20 12:46:43,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 881.8333333333334) internal successors, (15873), 18 states have internal predecessors, (15873), 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) [2022-11-20 12:46:43,579 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:46:43,580 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:46:43,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:46:43,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:46:43,787 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-20 12:46:43,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:46:43,788 INFO L85 PathProgramCache]: Analyzing trace with hash -468559059, now seen corresponding path program 1 times [2022-11-20 12:46:43,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:46:43,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577394334] [2022-11-20 12:46:43,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:46:43,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:46:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:44,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:46:44,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:46:44,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577394334] [2022-11-20 12:46:44,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577394334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:46:44,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:46:44,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:46:44,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328761557] [2022-11-20 12:46:44,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:46:44,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:46:44,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:46:44,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:46:44,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:46:44,010 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 893 out of 970 [2022-11-20 12:46:44,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 884 places, 950 transitions, 2243 flow. Second operand has 5 states, 5 states have (on average 897.4) internal successors, (4487), 5 states have internal predecessors, (4487), 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) [2022-11-20 12:46:44,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:46:44,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 893 of 970 [2022-11-20 12:46:44,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:46:46,473 INFO L130 PetriNetUnfolder]: 266/3937 cut-off events. [2022-11-20 12:46:46,474 INFO L131 PetriNetUnfolder]: For 245/255 co-relation queries the response was YES. [2022-11-20 12:46:46,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4278 conditions, 3937 events. 266/3937 cut-off events. For 245/255 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 33798 event pairs, 0 based on Foata normal form. 3/3295 useless extension candidates. Maximal degree in co-relation 744. Up to 113 conditions per place. [2022-11-20 12:46:46,613 INFO L137 encePairwiseOnDemand]: 955/970 looper letters, 59 selfloop transitions, 20 changer transitions 0/954 dead transitions. [2022-11-20 12:46:46,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 888 places, 954 transitions, 2405 flow [2022-11-20 12:46:46,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:46:46,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:46:46,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 4518 transitions. [2022-11-20 12:46:46,624 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9315463917525774 [2022-11-20 12:46:46,624 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 4518 transitions. [2022-11-20 12:46:46,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 4518 transitions. [2022-11-20 12:46:46,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:46:46,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 4518 transitions. [2022-11-20 12:46:46,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 903.6) internal successors, (4518), 5 states have internal predecessors, (4518), 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) [2022-11-20 12:46:46,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 970.0) internal successors, (5820), 6 states have internal predecessors, (5820), 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) [2022-11-20 12:46:46,649 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 970.0) internal successors, (5820), 6 states have internal predecessors, (5820), 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) [2022-11-20 12:46:46,650 INFO L175 Difference]: Start difference. First operand has 884 places, 950 transitions, 2243 flow. Second operand 5 states and 4518 transitions. [2022-11-20 12:46:46,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 888 places, 954 transitions, 2405 flow [2022-11-20 12:46:46,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 873 places, 954 transitions, 2261 flow, removed 7 selfloop flow, removed 15 redundant places. [2022-11-20 12:46:46,670 INFO L231 Difference]: Finished difference. Result has 874 places, 948 transitions, 2137 flow [2022-11-20 12:46:46,671 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2085, PETRI_DIFFERENCE_MINUEND_PLACES=869, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=948, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=928, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2137, PETRI_PLACES=874, PETRI_TRANSITIONS=948} [2022-11-20 12:46:46,672 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 8 predicate places. [2022-11-20 12:46:46,673 INFO L495 AbstractCegarLoop]: Abstraction has has 874 places, 948 transitions, 2137 flow [2022-11-20 12:46:46,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 897.4) internal successors, (4487), 5 states have internal predecessors, (4487), 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) [2022-11-20 12:46:46,675 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:46:46,675 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:46:46,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:46:46,676 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-20 12:46:46,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:46:46,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1070048686, now seen corresponding path program 1 times [2022-11-20 12:46:46,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:46:46,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977582052] [2022-11-20 12:46:46,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:46:46,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:46:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:47,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:46:47,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:46:47,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977582052] [2022-11-20 12:46:47,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977582052] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:46:47,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214986119] [2022-11-20 12:46:47,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:46:47,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:46:47,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:46:47,110 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:46:47,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:46:47,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:47,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:46:47,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:46:47,457 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:46:47,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:46:47,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:46:47,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214986119] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:46:47,615 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:46:47,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-20 12:46:47,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227400886] [2022-11-20 12:46:47,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:46:47,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 12:46:47,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:46:47,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 12:46:47,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:46:47,632 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 878 out of 970 [2022-11-20 12:46:47,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 874 places, 948 transitions, 2137 flow. Second operand has 15 states, 15 states have (on average 882.4) internal successors, (13236), 15 states have internal predecessors, (13236), 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) [2022-11-20 12:46:47,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:46:47,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 878 of 970 [2022-11-20 12:46:47,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:46:49,775 INFO L130 PetriNetUnfolder]: 160/2467 cut-off events. [2022-11-20 12:46:49,776 INFO L131 PetriNetUnfolder]: For 73/79 co-relation queries the response was YES. [2022-11-20 12:46:49,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2777 conditions, 2467 events. 160/2467 cut-off events. For 73/79 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 17976 event pairs, 0 based on Foata normal form. 6/2086 useless extension candidates. Maximal degree in co-relation 2270. Up to 57 conditions per place. [2022-11-20 12:46:49,833 INFO L137 encePairwiseOnDemand]: 946/970 looper letters, 74 selfloop transitions, 46 changer transitions 0/971 dead transitions. [2022-11-20 12:46:49,833 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 884 places, 971 transitions, 2433 flow [2022-11-20 12:46:49,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:46:49,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:46:49,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 9756 transitions. [2022-11-20 12:46:49,852 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9143392689784442 [2022-11-20 12:46:49,852 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 9756 transitions. [2022-11-20 12:46:49,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 9756 transitions. [2022-11-20 12:46:49,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:46:49,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 9756 transitions. [2022-11-20 12:46:49,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 886.9090909090909) internal successors, (9756), 11 states have internal predecessors, (9756), 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) [2022-11-20 12:46:49,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 970.0) internal successors, (11640), 12 states have internal predecessors, (11640), 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) [2022-11-20 12:46:49,898 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 970.0) internal successors, (11640), 12 states have internal predecessors, (11640), 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) [2022-11-20 12:46:49,898 INFO L175 Difference]: Start difference. First operand has 874 places, 948 transitions, 2137 flow. Second operand 11 states and 9756 transitions. [2022-11-20 12:46:49,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 884 places, 971 transitions, 2433 flow [2022-11-20 12:46:49,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 880 places, 971 transitions, 2401 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:46:49,916 INFO L231 Difference]: Finished difference. Result has 883 places, 947 transitions, 2250 flow [2022-11-20 12:46:49,918 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2077, PETRI_DIFFERENCE_MINUEND_PLACES=870, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=944, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=898, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2250, PETRI_PLACES=883, PETRI_TRANSITIONS=947} [2022-11-20 12:46:49,919 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 17 predicate places. [2022-11-20 12:46:49,919 INFO L495 AbstractCegarLoop]: Abstraction has has 883 places, 947 transitions, 2250 flow [2022-11-20 12:46:49,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 882.4) internal successors, (13236), 15 states have internal predecessors, (13236), 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) [2022-11-20 12:46:49,922 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:46:49,923 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:46:49,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:46:50,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 12:46:50,129 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-20 12:46:50,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:46:50,130 INFO L85 PathProgramCache]: Analyzing trace with hash -316782692, now seen corresponding path program 2 times [2022-11-20 12:46:50,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:46:50,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055856229] [2022-11-20 12:46:50,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:46:50,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:46:50,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:50,596 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-20 12:46:50,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:46:50,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055856229] [2022-11-20 12:46:50,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055856229] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:46:50,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623057489] [2022-11-20 12:46:50,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:46:50,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:46:50,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:46:50,599 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:46:50,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:46:50,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:46:50,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:46:50,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:46:50,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:46:51,149 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-20 12:46:51,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:46:51,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623057489] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:46:51,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:46:51,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2022-11-20 12:46:51,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238784562] [2022-11-20 12:46:51,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:46:51,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:46:51,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:46:51,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:46:51,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:46:51,156 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-20 12:46:51,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 883 places, 947 transitions, 2250 flow. Second operand has 6 states, 6 states have (on average 881.8333333333334) internal successors, (5291), 6 states have internal predecessors, (5291), 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) [2022-11-20 12:46:51,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:46:51,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-20 12:46:51,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:46:56,557 INFO L130 PetriNetUnfolder]: 1333/11665 cut-off events. [2022-11-20 12:46:56,557 INFO L131 PetriNetUnfolder]: For 158/164 co-relation queries the response was YES. [2022-11-20 12:46:56,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13871 conditions, 11665 events. 1333/11665 cut-off events. For 158/164 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 140016 event pairs, 216 based on Foata normal form. 0/9652 useless extension candidates. Maximal degree in co-relation 4455. Up to 492 conditions per place. [2022-11-20 12:46:56,918 INFO L137 encePairwiseOnDemand]: 962/970 looper letters, 61 selfloop transitions, 7 changer transitions 0/964 dead transitions. [2022-11-20 12:46:56,919 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 888 places, 964 transitions, 2433 flow [2022-11-20 12:46:56,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:46:56,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:46:56,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6229 transitions. [2022-11-20 12:46:56,931 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9173784977908689 [2022-11-20 12:46:56,931 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6229 transitions. [2022-11-20 12:46:56,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6229 transitions. [2022-11-20 12:46:56,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:46:56,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6229 transitions. [2022-11-20 12:46:56,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 889.8571428571429) internal successors, (6229), 7 states have internal predecessors, (6229), 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) [2022-11-20 12:46:56,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 970.0) internal successors, (7760), 8 states have internal predecessors, (7760), 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) [2022-11-20 12:46:56,956 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 970.0) internal successors, (7760), 8 states have internal predecessors, (7760), 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) [2022-11-20 12:46:56,956 INFO L175 Difference]: Start difference. First operand has 883 places, 947 transitions, 2250 flow. Second operand 7 states and 6229 transitions. [2022-11-20 12:46:56,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 888 places, 964 transitions, 2433 flow [2022-11-20 12:46:56,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 879 places, 964 transitions, 2362 flow, removed 3 selfloop flow, removed 9 redundant places. [2022-11-20 12:46:57,131 INFO L231 Difference]: Finished difference. Result has 879 places, 946 transitions, 2191 flow [2022-11-20 12:46:57,132 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2177, PETRI_DIFFERENCE_MINUEND_PLACES=873, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=946, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=939, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2191, PETRI_PLACES=879, PETRI_TRANSITIONS=946} [2022-11-20 12:46:57,133 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 13 predicate places. [2022-11-20 12:46:57,133 INFO L495 AbstractCegarLoop]: Abstraction has has 879 places, 946 transitions, 2191 flow [2022-11-20 12:46:57,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 881.8333333333334) internal successors, (5291), 6 states have internal predecessors, (5291), 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) [2022-11-20 12:46:57,134 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:46:57,135 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:46:57,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-20 12:46:57,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 12:46:57,336 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-20 12:46:57,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:46:57,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1230326437, now seen corresponding path program 1 times [2022-11-20 12:46:57,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:46:57,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508432997] [2022-11-20 12:46:57,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:46:57,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:46:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:57,562 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-20 12:46:57,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:46:57,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508432997] [2022-11-20 12:46:57,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508432997] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:46:57,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:46:57,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:46:57,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49737320] [2022-11-20 12:46:57,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:46:57,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:46:57,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:46:57,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:46:57,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:46:57,575 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-20 12:46:57,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 879 places, 946 transitions, 2191 flow. Second operand has 4 states, 4 states have (on average 881.75) internal successors, (3527), 4 states have internal predecessors, (3527), 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) [2022-11-20 12:46:57,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:46:57,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-20 12:46:57,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:47:02,434 INFO L130 PetriNetUnfolder]: 961/9898 cut-off events. [2022-11-20 12:47:02,434 INFO L131 PetriNetUnfolder]: For 145/151 co-relation queries the response was YES. [2022-11-20 12:47:02,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11702 conditions, 9898 events. 961/9898 cut-off events. For 145/151 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 116264 event pairs, 180 based on Foata normal form. 18/8257 useless extension candidates. Maximal degree in co-relation 6638. Up to 490 conditions per place. [2022-11-20 12:47:02,756 INFO L137 encePairwiseOnDemand]: 958/970 looper letters, 64 selfloop transitions, 8 changer transitions 0/968 dead transitions. [2022-11-20 12:47:02,756 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 880 places, 968 transitions, 2385 flow [2022-11-20 12:47:02,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:47:02,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:47:02,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3596 transitions. [2022-11-20 12:47:02,783 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9268041237113402 [2022-11-20 12:47:02,784 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3596 transitions. [2022-11-20 12:47:02,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3596 transitions. [2022-11-20 12:47:02,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:47:02,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3596 transitions. [2022-11-20 12:47:02,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 899.0) internal successors, (3596), 4 states have internal predecessors, (3596), 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) [2022-11-20 12:47:02,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 970.0) internal successors, (4850), 5 states have internal predecessors, (4850), 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) [2022-11-20 12:47:02,805 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 970.0) internal successors, (4850), 5 states have internal predecessors, (4850), 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) [2022-11-20 12:47:02,805 INFO L175 Difference]: Start difference. First operand has 879 places, 946 transitions, 2191 flow. Second operand 4 states and 3596 transitions. [2022-11-20 12:47:02,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 880 places, 968 transitions, 2385 flow [2022-11-20 12:47:02,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 876 places, 968 transitions, 2375 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:47:02,827 INFO L231 Difference]: Finished difference. Result has 879 places, 948 transitions, 2227 flow [2022-11-20 12:47:02,829 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2175, PETRI_DIFFERENCE_MINUEND_PLACES=873, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=944, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=936, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2227, PETRI_PLACES=879, PETRI_TRANSITIONS=948} [2022-11-20 12:47:02,832 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 13 predicate places. [2022-11-20 12:47:02,833 INFO L495 AbstractCegarLoop]: Abstraction has has 879 places, 948 transitions, 2227 flow [2022-11-20 12:47:02,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 881.75) internal successors, (3527), 4 states have internal predecessors, (3527), 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) [2022-11-20 12:47:02,834 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:47:02,834 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:47:02,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:47:02,835 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-20 12:47:02,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:02,836 INFO L85 PathProgramCache]: Analyzing trace with hash -429009388, now seen corresponding path program 1 times [2022-11-20 12:47:02,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:02,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721593899] [2022-11-20 12:47:02,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:02,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:02,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:03,311 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-20 12:47:03,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:03,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721593899] [2022-11-20 12:47:03,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721593899] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:47:03,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739888219] [2022-11-20 12:47:03,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:03,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:47:03,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:03,313 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:47:03,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:47:03,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:03,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:47:03,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:03,738 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-20 12:47:03,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:47:03,907 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-20 12:47:03,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739888219] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:47:03,908 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:47:03,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-20 12:47:03,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010837160] [2022-11-20 12:47:03,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:47:03,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 12:47:03,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:03,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 12:47:03,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-20 12:47:04,089 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 878 out of 970 [2022-11-20 12:47:04,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 879 places, 948 transitions, 2227 flow. Second operand has 22 states, 22 states have (on average 882.3181818181819) internal successors, (19411), 22 states have internal predecessors, (19411), 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) [2022-11-20 12:47:04,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:47:04,118 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 878 of 970 [2022-11-20 12:47:04,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:47:05,277 INFO L130 PetriNetUnfolder]: 52/1117 cut-off events. [2022-11-20 12:47:05,277 INFO L131 PetriNetUnfolder]: For 121/131 co-relation queries the response was YES. [2022-11-20 12:47:05,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1452 conditions, 1117 events. 52/1117 cut-off events. For 121/131 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5091 event pairs, 0 based on Foata normal form. 6/988 useless extension candidates. Maximal degree in co-relation 1291. Up to 33 conditions per place. [2022-11-20 12:47:05,316 INFO L137 encePairwiseOnDemand]: 946/970 looper letters, 83 selfloop transitions, 51 changer transitions 0/986 dead transitions. [2022-11-20 12:47:05,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 895 places, 986 transitions, 2600 flow [2022-11-20 12:47:05,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 12:47:05,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-20 12:47:05,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 15066 transitions. [2022-11-20 12:47:05,329 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9136446331109763 [2022-11-20 12:47:05,329 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 15066 transitions. [2022-11-20 12:47:05,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 15066 transitions. [2022-11-20 12:47:05,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:47:05,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 15066 transitions. [2022-11-20 12:47:05,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 886.2352941176471) internal successors, (15066), 17 states have internal predecessors, (15066), 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) [2022-11-20 12:47:05,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 970.0) internal successors, (17460), 18 states have internal predecessors, (17460), 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) [2022-11-20 12:47:05,382 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 970.0) internal successors, (17460), 18 states have internal predecessors, (17460), 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) [2022-11-20 12:47:05,383 INFO L175 Difference]: Start difference. First operand has 879 places, 948 transitions, 2227 flow. Second operand 17 states and 15066 transitions. [2022-11-20 12:47:05,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 895 places, 986 transitions, 2600 flow [2022-11-20 12:47:05,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 895 places, 986 transitions, 2600 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:47:05,405 INFO L231 Difference]: Finished difference. Result has 897 places, 944 transitions, 2332 flow [2022-11-20 12:47:05,407 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2203, PETRI_DIFFERENCE_MINUEND_PLACES=879, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=944, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=893, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2332, PETRI_PLACES=897, PETRI_TRANSITIONS=944} [2022-11-20 12:47:05,408 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 31 predicate places. [2022-11-20 12:47:05,408 INFO L495 AbstractCegarLoop]: Abstraction has has 897 places, 944 transitions, 2332 flow [2022-11-20 12:47:05,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 882.3181818181819) internal successors, (19411), 22 states have internal predecessors, (19411), 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) [2022-11-20 12:47:05,412 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:47:05,412 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:47:05,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:05,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e6d690a-03f5-4d38-a3ae-d2fd7d799f78/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:47:05,620 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-20 12:47:05,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:05,621 INFO L85 PathProgramCache]: Analyzing trace with hash -803555362, now seen corresponding path program 2 times [2022-11-20 12:47:05,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:05,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694582428] [2022-11-20 12:47:05,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:05,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:05,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:05,992 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-20 12:47:05,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:05,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694582428] [2022-11-20 12:47:05,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694582428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:47:05,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:47:05,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:47:05,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032981365] [2022-11-20 12:47:05,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:47:05,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:47:05,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:05,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:47:05,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:47:06,004 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-20 12:47:06,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 897 places, 944 transitions, 2332 flow. Second operand has 6 states, 6 states have (on average 882.0) internal successors, (5292), 6 states have internal predecessors, (5292), 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) [2022-11-20 12:47:06,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:47:06,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-20 12:47:06,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:47:08,577 INFO L130 PetriNetUnfolder]: 904/5188 cut-off events. [2022-11-20 12:47:08,577 INFO L131 PetriNetUnfolder]: For 617/1834 co-relation queries the response was YES. [2022-11-20 12:47:08,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6877 conditions, 5188 events. 904/5188 cut-off events. For 617/1834 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 53065 event pairs, 248 based on Foata normal form. 0/4129 useless extension candidates. Maximal degree in co-relation 6369. Up to 491 conditions per place. [2022-11-20 12:47:08,943 INFO L137 encePairwiseOnDemand]: 962/970 looper letters, 59 selfloop transitions, 7 changer transitions 0/959 dead transitions. [2022-11-20 12:47:08,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 902 places, 959 transitions, 2505 flow [2022-11-20 12:47:08,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:47:08,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:47:08,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6227 transitions. [2022-11-20 12:47:08,950 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9170839469808542 [2022-11-20 12:47:08,951 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6227 transitions. [2022-11-20 12:47:08,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6227 transitions. [2022-11-20 12:47:08,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:47:08,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6227 transitions. [2022-11-20 12:47:08,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 889.5714285714286) internal successors, (6227), 7 states have internal predecessors, (6227), 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) [2022-11-20 12:47:08,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 970.0) internal successors, (7760), 8 states have internal predecessors, (7760), 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) [2022-11-20 12:47:08,973 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 970.0) internal successors, (7760), 8 states have internal predecessors, (7760), 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) [2022-11-20 12:47:08,973 INFO L175 Difference]: Start difference. First operand has 897 places, 944 transitions, 2332 flow. Second operand 7 states and 6227 transitions. [2022-11-20 12:47:08,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 902 places, 959 transitions, 2505 flow [2022-11-20 12:47:08,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 886 places, 959 transitions, 2403 flow, removed 0 selfloop flow, removed 16 redundant places. [2022-11-20 12:47:08,998 INFO L231 Difference]: Finished difference. Result has 886 places, 943 transitions, 2242 flow [2022-11-20 12:47:09,000 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2228, PETRI_DIFFERENCE_MINUEND_PLACES=880, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=943, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=936, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2242, PETRI_PLACES=886, PETRI_TRANSITIONS=943} [2022-11-20 12:47:09,002 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 20 predicate places. [2022-11-20 12:47:09,003 INFO L495 AbstractCegarLoop]: Abstraction has has 886 places, 943 transitions, 2242 flow [2022-11-20 12:47:09,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 882.0) internal successors, (5292), 6 states have internal predecessors, (5292), 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) [2022-11-20 12:47:09,004 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:47:09,004 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:47:09,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 12:47:09,005 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-20 12:47:09,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:09,005 INFO L85 PathProgramCache]: Analyzing trace with hash 859590214, now seen corresponding path program 1 times [2022-11-20 12:47:09,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:09,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48171918] [2022-11-20 12:47:09,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:09,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:09,274 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-20 12:47:09,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:09,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48171918] [2022-11-20 12:47:09,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48171918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:47:09,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:47:09,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:47:09,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554380051] [2022-11-20 12:47:09,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:47:09,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:47:09,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:09,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:47:09,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:47:09,283 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-20 12:47:09,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 886 places, 943 transitions, 2242 flow. Second operand has 4 states, 4 states have (on average 882.0) internal successors, (3528), 4 states have internal predecessors, (3528), 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) [2022-11-20 12:47:09,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:47:09,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-20 12:47:09,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:47:12,268 INFO L130 PetriNetUnfolder]: 519/3742 cut-off events. [2022-11-20 12:47:12,268 INFO L131 PetriNetUnfolder]: For 466/2406 co-relation queries the response was YES. [2022-11-20 12:47:12,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4972 conditions, 3742 events. 519/3742 cut-off events. For 466/2406 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 36595 event pairs, 180 based on Foata normal form. 14/3018 useless extension candidates. Maximal degree in co-relation 4516. Up to 426 conditions per place. [2022-11-20 12:47:12,440 INFO L137 encePairwiseOnDemand]: 958/970 looper letters, 63 selfloop transitions, 8 changer transitions 0/964 dead transitions. [2022-11-20 12:47:12,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 887 places, 964 transitions, 2431 flow [2022-11-20 12:47:12,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:47:12,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:47:12,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3595 transitions. [2022-11-20 12:47:12,446 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9265463917525774 [2022-11-20 12:47:12,446 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3595 transitions. [2022-11-20 12:47:12,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3595 transitions. [2022-11-20 12:47:12,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:47:12,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3595 transitions. [2022-11-20 12:47:12,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 898.75) internal successors, (3595), 4 states have internal predecessors, (3595), 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) [2022-11-20 12:47:12,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 970.0) internal successors, (4850), 5 states have internal predecessors, (4850), 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) [2022-11-20 12:47:12,458 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 970.0) internal successors, (4850), 5 states have internal predecessors, (4850), 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) [2022-11-20 12:47:12,458 INFO L175 Difference]: Start difference. First operand has 886 places, 943 transitions, 2242 flow. Second operand 4 states and 3595 transitions. [2022-11-20 12:47:12,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 887 places, 964 transitions, 2431 flow [2022-11-20 12:47:12,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 883 places, 964 transitions, 2421 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:47:12,479 INFO L231 Difference]: Finished difference. Result has 886 places, 945 transitions, 2278 flow [2022-11-20 12:47:12,481 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2226, PETRI_DIFFERENCE_MINUEND_PLACES=880, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=941, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=933, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2278, PETRI_PLACES=886, PETRI_TRANSITIONS=945} [2022-11-20 12:47:12,482 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 20 predicate places. [2022-11-20 12:47:12,482 INFO L495 AbstractCegarLoop]: Abstraction has has 886 places, 945 transitions, 2278 flow [2022-11-20 12:47:12,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 882.0) internal successors, (3528), 4 states have internal predecessors, (3528), 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) [2022-11-20 12:47:12,483 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:47:12,484 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:47:12,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:47:12,484 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-20 12:47:12,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:12,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1495777572, now seen corresponding path program 1 times [2022-11-20 12:47:12,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:12,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640518354] [2022-11-20 12:47:12,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:12,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:12,750 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-20 12:47:12,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:12,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640518354] [2022-11-20 12:47:12,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640518354] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:47:12,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:47:12,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:47:12,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740369849] [2022-11-20 12:47:12,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:47:12,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:47:12,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:12,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:47:12,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:47:12,757 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-20 12:47:12,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 886 places, 945 transitions, 2278 flow. Second operand has 6 states, 6 states have (on average 881.8333333333334) internal successors, (5291), 6 states have internal predecessors, (5291), 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) [2022-11-20 12:47:12,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:47:12,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-20 12:47:12,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:47:15,369 INFO L130 PetriNetUnfolder]: 518/5114 cut-off events. [2022-11-20 12:47:15,369 INFO L131 PetriNetUnfolder]: For 240/708 co-relation queries the response was YES. [2022-11-20 12:47:15,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6465 conditions, 5114 events. 518/5114 cut-off events. For 240/708 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 53587 event pairs, 104 based on Foata normal form. 8/4372 useless extension candidates. Maximal degree in co-relation 6005. Up to 299 conditions per place. [2022-11-20 12:47:15,549 INFO L137 encePairwiseOnDemand]: 963/970 looper letters, 61 selfloop transitions, 6 changer transitions 0/962 dead transitions. [2022-11-20 12:47:15,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 891 places, 962 transitions, 2459 flow [2022-11-20 12:47:15,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:47:15,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:47:15,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6226 transitions. [2022-11-20 12:47:15,559 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9169366715758468 [2022-11-20 12:47:15,559 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6226 transitions. [2022-11-20 12:47:15,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6226 transitions. [2022-11-20 12:47:15,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:47:15,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6226 transitions. [2022-11-20 12:47:15,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 889.4285714285714) internal successors, (6226), 7 states have internal predecessors, (6226), 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) [2022-11-20 12:47:15,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 970.0) internal successors, (7760), 8 states have internal predecessors, (7760), 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) [2022-11-20 12:47:15,582 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 970.0) internal successors, (7760), 8 states have internal predecessors, (7760), 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) [2022-11-20 12:47:15,582 INFO L175 Difference]: Start difference. First operand has 886 places, 945 transitions, 2278 flow. Second operand 7 states and 6226 transitions. [2022-11-20 12:47:15,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 891 places, 962 transitions, 2459 flow [2022-11-20 12:47:15,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 891 places, 962 transitions, 2459 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:47:15,605 INFO L231 Difference]: Finished difference. Result has 891 places, 944 transitions, 2288 flow [2022-11-20 12:47:15,606 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2276, PETRI_DIFFERENCE_MINUEND_PLACES=885, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=944, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=938, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2288, PETRI_PLACES=891, PETRI_TRANSITIONS=944} [2022-11-20 12:47:15,607 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 25 predicate places. [2022-11-20 12:47:15,607 INFO L495 AbstractCegarLoop]: Abstraction has has 891 places, 944 transitions, 2288 flow [2022-11-20 12:47:15,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 881.8333333333334) internal successors, (5291), 6 states have internal predecessors, (5291), 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) [2022-11-20 12:47:15,608 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:47:15,609 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:47:15,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:47:15,609 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-20 12:47:15,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:15,610 INFO L85 PathProgramCache]: Analyzing trace with hash -393732346, now seen corresponding path program 1 times [2022-11-20 12:47:15,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:15,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605960313] [2022-11-20 12:47:15,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:15,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:15,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:15,902 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-20 12:47:15,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:15,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605960313] [2022-11-20 12:47:15,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605960313] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:47:15,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:47:15,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:47:15,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959707589] [2022-11-20 12:47:15,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:47:15,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:47:15,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:15,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:47:15,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:47:15,910 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-20 12:47:15,915 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 891 places, 944 transitions, 2288 flow. Second operand has 4 states, 4 states have (on average 882.25) internal successors, (3529), 4 states have internal predecessors, (3529), 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) [2022-11-20 12:47:15,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:47:15,915 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-20 12:47:15,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:47:18,630 INFO L130 PetriNetUnfolder]: 310/4127 cut-off events. [2022-11-20 12:47:18,631 INFO L131 PetriNetUnfolder]: For 238/1880 co-relation queries the response was YES. [2022-11-20 12:47:18,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5093 conditions, 4127 events. 310/4127 cut-off events. For 238/1880 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 39093 event pairs, 48 based on Foata normal form. 14/3554 useless extension candidates. Maximal degree in co-relation 4634. Up to 204 conditions per place. [2022-11-20 12:47:18,760 INFO L137 encePairwiseOnDemand]: 962/970 looper letters, 63 selfloop transitions, 6 changer transitions 0/962 dead transitions. [2022-11-20 12:47:18,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 894 places, 962 transitions, 2462 flow [2022-11-20 12:47:18,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:47:18,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:47:18,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3591 transitions. [2022-11-20 12:47:18,765 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9255154639175258 [2022-11-20 12:47:18,765 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3591 transitions. [2022-11-20 12:47:18,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3591 transitions. [2022-11-20 12:47:18,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:47:18,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3591 transitions. [2022-11-20 12:47:18,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 897.75) internal successors, (3591), 4 states have internal predecessors, (3591), 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) [2022-11-20 12:47:18,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 970.0) internal successors, (4850), 5 states have internal predecessors, (4850), 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) [2022-11-20 12:47:18,774 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 970.0) internal successors, (4850), 5 states have internal predecessors, (4850), 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) [2022-11-20 12:47:18,775 INFO L175 Difference]: Start difference. First operand has 891 places, 944 transitions, 2288 flow. Second operand 4 states and 3591 transitions. [2022-11-20 12:47:18,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 894 places, 962 transitions, 2462 flow [2022-11-20 12:47:18,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 889 places, 962 transitions, 2448 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:47:18,797 INFO L231 Difference]: Finished difference. Result has 889 places, 942 transitions, 2274 flow [2022-11-20 12:47:18,799 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2262, PETRI_DIFFERENCE_MINUEND_PLACES=886, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=942, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=936, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2274, PETRI_PLACES=889, PETRI_TRANSITIONS=942} [2022-11-20 12:47:18,800 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 23 predicate places. [2022-11-20 12:47:18,800 INFO L495 AbstractCegarLoop]: Abstraction has has 889 places, 942 transitions, 2274 flow [2022-11-20 12:47:18,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 882.25) internal successors, (3529), 4 states have internal predecessors, (3529), 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) [2022-11-20 12:47:18,801 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:47:18,801 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:47:18,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 12:47:18,802 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-20 12:47:18,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:18,803 INFO L85 PathProgramCache]: Analyzing trace with hash 679201633, now seen corresponding path program 1 times [2022-11-20 12:47:18,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:18,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636141185] [2022-11-20 12:47:18,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:18,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:19,054 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-20 12:47:19,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:19,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636141185] [2022-11-20 12:47:19,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636141185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:47:19,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:47:19,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:47:19,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505648404] [2022-11-20 12:47:19,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:47:19,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:47:19,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:19,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:47:19,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:47:19,061 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-20 12:47:19,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 889 places, 942 transitions, 2274 flow. Second operand has 6 states, 6 states have (on average 882.1666666666666) internal successors, (5293), 6 states have internal predecessors, (5293), 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) [2022-11-20 12:47:19,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:47:19,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-20 12:47:19,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:47:21,751 INFO L130 PetriNetUnfolder]: 503/5094 cut-off events. [2022-11-20 12:47:21,751 INFO L131 PetriNetUnfolder]: For 210/738 co-relation queries the response was YES. [2022-11-20 12:47:21,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6430 conditions, 5094 events. 503/5094 cut-off events. For 210/738 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 52299 event pairs, 145 based on Foata normal form. 10/4370 useless extension candidates. Maximal degree in co-relation 5970. Up to 321 conditions per place. [2022-11-20 12:47:21,905 INFO L137 encePairwiseOnDemand]: 963/970 looper letters, 51 selfloop transitions, 6 changer transitions 0/952 dead transitions. [2022-11-20 12:47:21,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 894 places, 952 transitions, 2419 flow [2022-11-20 12:47:21,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:47:21,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:47:21,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6218 transitions. [2022-11-20 12:47:21,916 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9157584683357879 [2022-11-20 12:47:21,917 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6218 transitions. [2022-11-20 12:47:21,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6218 transitions. [2022-11-20 12:47:21,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:47:21,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6218 transitions. [2022-11-20 12:47:21,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 888.2857142857143) internal successors, (6218), 7 states have internal predecessors, (6218), 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) [2022-11-20 12:47:21,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 970.0) internal successors, (7760), 8 states have internal predecessors, (7760), 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) [2022-11-20 12:47:21,943 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 970.0) internal successors, (7760), 8 states have internal predecessors, (7760), 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) [2022-11-20 12:47:21,943 INFO L175 Difference]: Start difference. First operand has 889 places, 942 transitions, 2274 flow. Second operand 7 states and 6218 transitions. [2022-11-20 12:47:21,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 894 places, 952 transitions, 2419 flow [2022-11-20 12:47:21,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 892 places, 952 transitions, 2409 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:47:21,971 INFO L231 Difference]: Finished difference. Result has 892 places, 941 transitions, 2274 flow [2022-11-20 12:47:21,973 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2262, PETRI_DIFFERENCE_MINUEND_PLACES=886, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=941, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=935, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2274, PETRI_PLACES=892, PETRI_TRANSITIONS=941} [2022-11-20 12:47:21,973 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 26 predicate places. [2022-11-20 12:47:21,974 INFO L495 AbstractCegarLoop]: Abstraction has has 892 places, 941 transitions, 2274 flow [2022-11-20 12:47:21,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 882.1666666666666) internal successors, (5293), 6 states have internal predecessors, (5293), 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) [2022-11-20 12:47:21,975 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:47:21,976 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:47:21,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 12:47:21,976 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-20 12:47:21,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:21,977 INFO L85 PathProgramCache]: Analyzing trace with hash 722228934, now seen corresponding path program 1 times [2022-11-20 12:47:21,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:21,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007643621] [2022-11-20 12:47:21,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:21,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:22,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:22,351 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-20 12:47:22,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:22,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007643621] [2022-11-20 12:47:22,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007643621] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:47:22,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:47:22,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:47:22,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459098862] [2022-11-20 12:47:22,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:47:22,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:47:22,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:22,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:47:22,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:47:22,360 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-20 12:47:22,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 892 places, 941 transitions, 2274 flow. Second operand has 6 states, 6 states have (on average 882.1666666666666) internal successors, (5293), 6 states have internal predecessors, (5293), 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) [2022-11-20 12:47:22,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:47:22,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-20 12:47:22,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:47:27,037 INFO L130 PetriNetUnfolder]: 2551/10141 cut-off events. [2022-11-20 12:47:27,037 INFO L131 PetriNetUnfolder]: For 2156/3011 co-relation queries the response was YES. [2022-11-20 12:47:27,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15029 conditions, 10141 events. 2551/10141 cut-off events. For 2156/3011 co-relation queries the response was YES. Maximal size of possible extension queue 1186. Compared 130579 event pairs, 806 based on Foata normal form. 5/7522 useless extension candidates. Maximal degree in co-relation 14566. Up to 1722 conditions per place. [2022-11-20 12:47:27,228 INFO L137 encePairwiseOnDemand]: 962/970 looper letters, 57 selfloop transitions, 7 changer transitions 0/954 dead transitions. [2022-11-20 12:47:27,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 897 places, 954 transitions, 2434 flow [2022-11-20 12:47:27,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:47:27,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:47:27,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6225 transitions. [2022-11-20 12:47:27,234 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9167893961708394 [2022-11-20 12:47:27,234 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6225 transitions. [2022-11-20 12:47:27,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6225 transitions. [2022-11-20 12:47:27,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:47:27,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6225 transitions. [2022-11-20 12:47:27,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 889.2857142857143) internal successors, (6225), 7 states have internal predecessors, (6225), 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) [2022-11-20 12:47:27,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 970.0) internal successors, (7760), 8 states have internal predecessors, (7760), 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) [2022-11-20 12:47:27,251 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 970.0) internal successors, (7760), 8 states have internal predecessors, (7760), 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) [2022-11-20 12:47:27,251 INFO L175 Difference]: Start difference. First operand has 892 places, 941 transitions, 2274 flow. Second operand 7 states and 6225 transitions. [2022-11-20 12:47:27,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 897 places, 954 transitions, 2434 flow [2022-11-20 12:47:27,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 893 places, 954 transitions, 2424 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:47:27,271 INFO L231 Difference]: Finished difference. Result has 893 places, 940 transitions, 2276 flow [2022-11-20 12:47:27,273 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2262, PETRI_DIFFERENCE_MINUEND_PLACES=887, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=940, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=933, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2276, PETRI_PLACES=893, PETRI_TRANSITIONS=940} [2022-11-20 12:47:27,273 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 27 predicate places. [2022-11-20 12:47:27,274 INFO L495 AbstractCegarLoop]: Abstraction has has 893 places, 940 transitions, 2276 flow [2022-11-20 12:47:27,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 882.1666666666666) internal successors, (5293), 6 states have internal predecessors, (5293), 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) [2022-11-20 12:47:27,275 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:47:27,275 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:47:27,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 12:47:27,276 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-20 12:47:27,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:27,276 INFO L85 PathProgramCache]: Analyzing trace with hash 689890536, now seen corresponding path program 1 times [2022-11-20 12:47:27,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:27,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279082989] [2022-11-20 12:47:27,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:27,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:27,480 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-20 12:47:27,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:27,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279082989] [2022-11-20 12:47:27,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279082989] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:47:27,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:47:27,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:47:27,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406637926] [2022-11-20 12:47:27,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:47:27,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:47:27,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:27,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:47:27,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:47:27,487 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-20 12:47:27,489 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 893 places, 940 transitions, 2276 flow. Second operand has 4 states, 4 states have (on average 882.5) internal successors, (3530), 4 states have internal predecessors, (3530), 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) [2022-11-20 12:47:27,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:47:27,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-20 12:47:27,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:47:30,237 INFO L130 PetriNetUnfolder]: 310/4268 cut-off events. [2022-11-20 12:47:30,237 INFO L131 PetriNetUnfolder]: For 171/1933 co-relation queries the response was YES. [2022-11-20 12:47:30,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5289 conditions, 4268 events. 310/4268 cut-off events. For 171/1933 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 41082 event pairs, 72 based on Foata normal form. 14/3700 useless extension candidates. Maximal degree in co-relation 4831. Up to 214 conditions per place. [2022-11-20 12:47:30,481 INFO L137 encePairwiseOnDemand]: 962/970 looper letters, 58 selfloop transitions, 6 changer transitions 0/958 dead transitions. [2022-11-20 12:47:30,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 893 places, 958 transitions, 2443 flow [2022-11-20 12:47:30,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:47:30,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:47:30,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3586 transitions. [2022-11-20 12:47:30,487 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9242268041237114 [2022-11-20 12:47:30,487 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3586 transitions. [2022-11-20 12:47:30,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3586 transitions. [2022-11-20 12:47:30,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:47:30,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3586 transitions. [2022-11-20 12:47:30,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 896.5) internal successors, (3586), 4 states have internal predecessors, (3586), 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) [2022-11-20 12:47:30,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 970.0) internal successors, (4850), 5 states have internal predecessors, (4850), 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) [2022-11-20 12:47:30,496 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 970.0) internal successors, (4850), 5 states have internal predecessors, (4850), 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) [2022-11-20 12:47:30,496 INFO L175 Difference]: Start difference. First operand has 893 places, 940 transitions, 2276 flow. Second operand 4 states and 3586 transitions. [2022-11-20 12:47:30,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 893 places, 958 transitions, 2443 flow [2022-11-20 12:47:30,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 888 places, 958 transitions, 2428 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:47:30,521 INFO L231 Difference]: Finished difference. Result has 889 places, 940 transitions, 2278 flow [2022-11-20 12:47:30,523 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2252, PETRI_DIFFERENCE_MINUEND_PLACES=885, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=938, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=932, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2278, PETRI_PLACES=889, PETRI_TRANSITIONS=940} [2022-11-20 12:47:30,524 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 23 predicate places. [2022-11-20 12:47:30,524 INFO L495 AbstractCegarLoop]: Abstraction has has 889 places, 940 transitions, 2278 flow [2022-11-20 12:47:30,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 882.5) internal successors, (3530), 4 states have internal predecessors, (3530), 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) [2022-11-20 12:47:30,525 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:47:30,526 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:47:30,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 12:47:30,526 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-20 12:47:30,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:30,527 INFO L85 PathProgramCache]: Analyzing trace with hash 914263371, now seen corresponding path program 1 times [2022-11-20 12:47:30,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:30,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261398517] [2022-11-20 12:47:30,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:30,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:30,801 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-20 12:47:30,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:30,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261398517] [2022-11-20 12:47:30,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261398517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:47:30,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:47:30,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:47:30,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803363897] [2022-11-20 12:47:30,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:47:30,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:47:30,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:30,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:47:30,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:47:30,809 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-20 12:47:30,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 889 places, 940 transitions, 2278 flow. Second operand has 4 states, 4 states have (on average 882.25) internal successors, (3529), 4 states have internal predecessors, (3529), 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) [2022-11-20 12:47:30,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:47:30,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-20 12:47:30,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:47:35,607 INFO L130 PetriNetUnfolder]: 2816/12048 cut-off events. [2022-11-20 12:47:35,607 INFO L131 PetriNetUnfolder]: For 2787/4130 co-relation queries the response was YES. [2022-11-20 12:47:35,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17915 conditions, 12048 events. 2816/12048 cut-off events. For 2787/4130 co-relation queries the response was YES. Maximal size of possible extension queue 1889. Compared 172178 event pairs, 1260 based on Foata normal form. 0/8492 useless extension candidates. Maximal degree in co-relation 17459. Up to 2639 conditions per place. [2022-11-20 12:47:35,837 INFO L137 encePairwiseOnDemand]: 958/970 looper letters, 62 selfloop transitions, 8 changer transitions 0/960 dead transitions. [2022-11-20 12:47:35,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 890 places, 960 transitions, 2461 flow [2022-11-20 12:47:35,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:47:35,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:47:35,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3594 transitions. [2022-11-20 12:47:35,842 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9262886597938145 [2022-11-20 12:47:35,842 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3594 transitions. [2022-11-20 12:47:35,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3594 transitions. [2022-11-20 12:47:35,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:47:35,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3594 transitions. [2022-11-20 12:47:35,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 898.5) internal successors, (3594), 4 states have internal predecessors, (3594), 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) [2022-11-20 12:47:35,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 970.0) internal successors, (4850), 5 states have internal predecessors, (4850), 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) [2022-11-20 12:47:36,059 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 970.0) internal successors, (4850), 5 states have internal predecessors, (4850), 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) [2022-11-20 12:47:36,059 INFO L175 Difference]: Start difference. First operand has 889 places, 940 transitions, 2278 flow. Second operand 4 states and 3594 transitions. [2022-11-20 12:47:36,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 890 places, 960 transitions, 2461 flow [2022-11-20 12:47:36,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 889 places, 960 transitions, 2457 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:47:36,082 INFO L231 Difference]: Finished difference. Result has 892 places, 942 transitions, 2321 flow [2022-11-20 12:47:36,084 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2269, PETRI_DIFFERENCE_MINUEND_PLACES=886, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=938, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=930, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2321, PETRI_PLACES=892, PETRI_TRANSITIONS=942} [2022-11-20 12:47:36,084 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 26 predicate places. [2022-11-20 12:47:36,084 INFO L495 AbstractCegarLoop]: Abstraction has has 892 places, 942 transitions, 2321 flow [2022-11-20 12:47:36,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 882.25) internal successors, (3529), 4 states have internal predecessors, (3529), 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) [2022-11-20 12:47:36,085 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:47:36,086 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:47:36,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 12:47:36,086 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-20 12:47:36,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:36,087 INFO L85 PathProgramCache]: Analyzing trace with hash 712962969, now seen corresponding path program 1 times [2022-11-20 12:47:36,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:36,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821096805] [2022-11-20 12:47:36,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:36,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:36,334 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-20 12:47:36,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:36,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821096805] [2022-11-20 12:47:36,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821096805] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:47:36,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:47:36,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:47:36,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452837060] [2022-11-20 12:47:36,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:47:36,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:47:36,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:36,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:47:36,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:47:36,341 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-20 12:47:36,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 892 places, 942 transitions, 2321 flow. Second operand has 6 states, 6 states have (on average 882.0) internal successors, (5292), 6 states have internal predecessors, (5292), 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) [2022-11-20 12:47:36,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:47:36,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-20 12:47:36,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand