./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro --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 57b20b3268fa30a07af1365aac59c96531ad2ebea6861c18a1d5dfea8339adbb --- 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-8393723 [2022-11-18 21:07:33,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 21:07:33,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 21:07:33,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 21:07:33,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 21:07:33,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 21:07:33,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 21:07:33,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 21:07:33,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 21:07:33,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 21:07:33,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 21:07:33,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 21:07:33,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 21:07:33,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 21:07:33,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 21:07:33,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 21:07:33,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 21:07:33,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 21:07:33,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 21:07:33,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 21:07:33,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 21:07:33,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 21:07:33,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 21:07:33,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 21:07:33,412 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 21:07:33,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 21:07:33,413 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 21:07:33,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 21:07:33,414 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 21:07:33,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 21:07:33,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 21:07:33,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 21:07:33,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 21:07:33,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 21:07:33,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 21:07:33,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 21:07:33,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 21:07:33,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 21:07:33,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 21:07:33,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 21:07:33,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 21:07:33,423 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 21:07:33,445 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 21:07:33,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 21:07:33,446 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 21:07:33,446 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 21:07:33,447 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 21:07:33,447 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 21:07:33,448 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 21:07:33,448 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 21:07:33,449 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 21:07:33,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 21:07:33,449 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 21:07:33,449 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 21:07:33,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 21:07:33,450 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 21:07:33,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 21:07:33,451 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 21:07:33,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 21:07:33,451 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 21:07:33,451 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 21:07:33,452 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 21:07:33,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 21:07:33,452 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 21:07:33,452 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 21:07:33,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 21:07:33,453 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 21:07:33,453 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 21:07:33,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:07:33,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 21:07:33,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 21:07:33,454 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 21:07:33,454 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 21:07:33,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 21:07:33,455 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 21:07:33,455 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 21:07:33,455 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 21:07:33,455 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_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57b20b3268fa30a07af1365aac59c96531ad2ebea6861c18a1d5dfea8339adbb [2022-11-18 21:07:33,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 21:07:33,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 21:07:33,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 21:07:33,806 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 21:07:33,806 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 21:07:33,808 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2022-11-18 21:07:33,889 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/data/85a1ef6d7/4d99cd739fe344e885ccaf87e5372a5a/FLAG342a8b83a [2022-11-18 21:07:34,480 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 21:07:34,481 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2022-11-18 21:07:34,493 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/data/85a1ef6d7/4d99cd739fe344e885ccaf87e5372a5a/FLAG342a8b83a [2022-11-18 21:07:34,800 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/data/85a1ef6d7/4d99cd739fe344e885ccaf87e5372a5a [2022-11-18 21:07:34,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 21:07:34,806 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 21:07:34,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 21:07:34,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 21:07:34,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 21:07:34,815 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:07:34" (1/1) ... [2022-11-18 21:07:34,816 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50b0d7da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:34, skipping insertion in model container [2022-11-18 21:07:34,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:07:34" (1/1) ... [2022-11-18 21:07:34,824 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 21:07:34,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 21:07:35,087 WARN L234 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_24a7842d-a512-43f5-b2d5-a0316fabcca6/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c[6501,6514] [2022-11-18 21:07:35,103 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:07:35,111 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 21:07:35,194 WARN L234 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_24a7842d-a512-43f5-b2d5-a0316fabcca6/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c[6501,6514] [2022-11-18 21:07:35,198 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:07:35,213 INFO L208 MainTranslator]: Completed translation [2022-11-18 21:07:35,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:35 WrapperNode [2022-11-18 21:07:35,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 21:07:35,214 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 21:07:35,214 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 21:07:35,215 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 21:07:35,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:35" (1/1) ... [2022-11-18 21:07:35,252 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:35" (1/1) ... [2022-11-18 21:07:35,316 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 706 [2022-11-18 21:07:35,317 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 21:07:35,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 21:07:35,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 21:07:35,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 21:07:35,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:35" (1/1) ... [2022-11-18 21:07:35,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:35" (1/1) ... [2022-11-18 21:07:35,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:35" (1/1) ... [2022-11-18 21:07:35,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:35" (1/1) ... [2022-11-18 21:07:35,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:35" (1/1) ... [2022-11-18 21:07:35,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:35" (1/1) ... [2022-11-18 21:07:35,362 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:35" (1/1) ... [2022-11-18 21:07:35,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:35" (1/1) ... [2022-11-18 21:07:35,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 21:07:35,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 21:07:35,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 21:07:35,372 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 21:07:35,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:35" (1/1) ... [2022-11-18 21:07:35,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:07:35,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:07:35,438 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 21:07:35,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 21:07:35,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 21:07:35,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 21:07:35,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 21:07:35,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 21:07:35,488 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 21:07:35,488 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 21:07:35,488 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 21:07:35,488 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 21:07:35,488 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 21:07:35,489 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 21:07:35,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 21:07:35,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 21:07:35,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 21:07:35,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 21:07:35,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 21:07:35,491 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 21:07:35,685 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 21:07:35,687 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 21:07:36,937 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 21:07:36,960 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 21:07:36,960 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-18 21:07:36,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:07:36 BoogieIcfgContainer [2022-11-18 21:07:36,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 21:07:36,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 21:07:36,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 21:07:36,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 21:07:36,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:07:34" (1/3) ... [2022-11-18 21:07:36,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f39e21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:07:36, skipping insertion in model container [2022-11-18 21:07:36,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:35" (2/3) ... [2022-11-18 21:07:36,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f39e21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:07:36, skipping insertion in model container [2022-11-18 21:07:36,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:07:36" (3/3) ... [2022-11-18 21:07:36,974 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-subst.wvr.c [2022-11-18 21:07:36,983 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 21:07:36,993 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 21:07:36,993 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2022-11-18 21:07:36,994 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 21:07:37,232 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 21:07:37,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 889 places, 970 transitions, 1964 flow [2022-11-18 21:07:37,876 INFO L130 PetriNetUnfolder]: 91/967 cut-off events. [2022-11-18 21:07:37,877 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 21:07:37,910 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. [2022-11-18 21:07:37,911 INFO L82 GeneralOperation]: Start removeDead. Operand has 889 places, 970 transitions, 1964 flow [2022-11-18 21:07:37,936 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 866 places, 946 transitions, 1907 flow [2022-11-18 21:07:37,945 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:07:37,952 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;@ce875, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:07:37,952 INFO L358 AbstractCegarLoop]: Starting to check reachability of 117 error locations. [2022-11-18 21:07:37,964 INFO L130 PetriNetUnfolder]: 3/118 cut-off events. [2022-11-18 21:07:37,965 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 21:07:37,965 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:07:37,966 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] [2022-11-18 21:07:37,966 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-18 21:07:37,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:07:37,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1045458, now seen corresponding path program 1 times [2022-11-18 21:07:37,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:07:37,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661535215] [2022-11-18 21:07:37,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:07:37,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:07:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:38,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:07:38,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:07:38,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661535215] [2022-11-18 21:07:38,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661535215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:07:38,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:07:38,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:07:38,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949453508] [2022-11-18 21:07:38,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:07:38,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:07:38,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:07:38,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:07:38,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:07:38,566 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 890 out of 970 [2022-11-18 21:07:38,577 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) [2022-11-18 21:07:38,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:07:38,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 890 of 970 [2022-11-18 21:07:38,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:07:39,856 INFO L130 PetriNetUnfolder]: 107/1669 cut-off events. [2022-11-18 21:07:39,857 INFO L131 PetriNetUnfolder]: For 22/26 co-relation queries the response was YES. [2022-11-18 21:07:39,923 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. [2022-11-18 21:07:39,962 INFO L137 encePairwiseOnDemand]: 914/970 looper letters, 58 selfloop transitions, 14 changer transitions 6/941 dead transitions. [2022-11-18 21:07:39,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 870 places, 941 transitions, 2056 flow [2022-11-18 21:07:39,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:07:39,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:07:39,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 4594 transitions. [2022-11-18 21:07:39,994 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9472164948453609 [2022-11-18 21:07:39,995 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 4594 transitions. [2022-11-18 21:07:39,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 4594 transitions. [2022-11-18 21:07:40,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:07:40,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 4594 transitions. [2022-11-18 21:07:40,021 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) [2022-11-18 21:07:40,043 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) [2022-11-18 21:07:40,048 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) [2022-11-18 21:07:40,050 INFO L175 Difference]: Start difference. First operand has 866 places, 946 transitions, 1907 flow. Second operand 5 states and 4594 transitions. [2022-11-18 21:07:40,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 870 places, 941 transitions, 2056 flow [2022-11-18 21:07:40,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 865 places, 941 transitions, 2038 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 21:07:40,083 INFO L231 Difference]: Finished difference. Result has 868 places, 915 transitions, 1918 flow [2022-11-18 21:07:40,087 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} [2022-11-18 21:07:40,092 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 2 predicate places. [2022-11-18 21:07:40,092 INFO L495 AbstractCegarLoop]: Abstraction has has 868 places, 915 transitions, 1918 flow [2022-11-18 21:07:40,095 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) [2022-11-18 21:07:40,095 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:07:40,096 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] [2022-11-18 21:07:40,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 21:07:40,097 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-18 21:07:40,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:07:40,099 INFO L85 PathProgramCache]: Analyzing trace with hash -184970811, now seen corresponding path program 1 times [2022-11-18 21:07:40,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:07:40,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404480513] [2022-11-18 21:07:40,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:07:40,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:07:40,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:40,400 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:07:40,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:07:40,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404480513] [2022-11-18 21:07:40,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404480513] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:07:40,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380791782] [2022-11-18 21:07:40,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:07:40,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:07:40,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:07:40,405 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:07:40,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 21:07:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:40,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:07:40,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:07:40,676 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:07:40,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:07:40,749 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:07:40,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380791782] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:07:40,750 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:07:40,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 21:07:40,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682065058] [2022-11-18 21:07:40,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:07:40,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 21:07:40,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:07:40,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 21:07:40,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:07:40,773 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 890 out of 970 [2022-11-18 21:07:40,787 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) [2022-11-18 21:07:40,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:07:40,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 890 of 970 [2022-11-18 21:07:40,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:07:43,373 INFO L130 PetriNetUnfolder]: 266/3946 cut-off events. [2022-11-18 21:07:43,373 INFO L131 PetriNetUnfolder]: For 53/63 co-relation queries the response was YES. [2022-11-18 21:07:43,531 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. [2022-11-18 21:07:43,583 INFO L137 encePairwiseOnDemand]: 947/970 looper letters, 109 selfloop transitions, 62 changer transitions 0/1034 dead transitions. [2022-11-18 21:07:43,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 879 places, 1034 transitions, 2600 flow [2022-11-18 21:07:43,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 21:07:43,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 21:07:43,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 16200 transitions. [2022-11-18 21:07:43,612 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9278350515463918 [2022-11-18 21:07:43,612 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 16200 transitions. [2022-11-18 21:07:43,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 16200 transitions. [2022-11-18 21:07:43,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:07:43,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 16200 transitions. [2022-11-18 21:07:43,655 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) [2022-11-18 21:07:43,694 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) [2022-11-18 21:07:43,709 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) [2022-11-18 21:07:43,709 INFO L175 Difference]: Start difference. First operand has 868 places, 915 transitions, 1918 flow. Second operand 18 states and 16200 transitions. [2022-11-18 21:07:43,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 879 places, 1034 transitions, 2600 flow [2022-11-18 21:07:43,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 878 places, 1034 transitions, 2592 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 21:07:43,825 INFO L231 Difference]: Finished difference. Result has 882 places, 957 transitions, 2280 flow [2022-11-18 21:07:43,827 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} [2022-11-18 21:07:43,827 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 16 predicate places. [2022-11-18 21:07:43,828 INFO L495 AbstractCegarLoop]: Abstraction has has 882 places, 957 transitions, 2280 flow [2022-11-18 21:07:43,831 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) [2022-11-18 21:07:43,831 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:07:43,832 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] [2022-11-18 21:07:43,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 21:07:44,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:07:44,038 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-18 21:07:44,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:07:44,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1439125716, now seen corresponding path program 1 times [2022-11-18 21:07:44,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:07:44,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878124094] [2022-11-18 21:07:44,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:07:44,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:07:44,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:44,235 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:07:44,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:07:44,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878124094] [2022-11-18 21:07:44,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878124094] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:07:44,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513355993] [2022-11-18 21:07:44,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:07:44,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:07:44,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:07:44,239 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:07:44,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 21:07:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:44,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:07:44,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:07:44,439 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:07:44,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:07:44,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513355993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:07:44,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:07:44,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 21:07:44,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213037037] [2022-11-18 21:07:44,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:07:44,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:07:44,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:07:44,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:07:44,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:07:44,454 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 890 out of 970 [2022-11-18 21:07:44,459 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) [2022-11-18 21:07:44,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:07:44,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 890 of 970 [2022-11-18 21:07:44,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:07:46,635 INFO L130 PetriNetUnfolder]: 266/3934 cut-off events. [2022-11-18 21:07:46,636 INFO L131 PetriNetUnfolder]: For 205/215 co-relation queries the response was YES. [2022-11-18 21:07:46,721 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. [2022-11-18 21:07:46,770 INFO L137 encePairwiseOnDemand]: 953/970 looper letters, 59 selfloop transitions, 43 changer transitions 0/965 dead transitions. [2022-11-18 21:07:46,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 881 places, 965 transitions, 2455 flow [2022-11-18 21:07:46,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:07:46,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 21:07:46,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6302 transitions. [2022-11-18 21:07:46,788 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9281296023564065 [2022-11-18 21:07:46,788 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6302 transitions. [2022-11-18 21:07:46,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6302 transitions. [2022-11-18 21:07:46,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:07:46,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6302 transitions. [2022-11-18 21:07:46,803 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) [2022-11-18 21:07:46,814 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) [2022-11-18 21:07:46,817 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) [2022-11-18 21:07:46,817 INFO L175 Difference]: Start difference. First operand has 882 places, 957 transitions, 2280 flow. Second operand 7 states and 6302 transitions. [2022-11-18 21:07:46,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 881 places, 965 transitions, 2455 flow [2022-11-18 21:07:46,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 876 places, 965 transitions, 2339 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-18 21:07:46,839 INFO L231 Difference]: Finished difference. Result has 876 places, 945 transitions, 2169 flow [2022-11-18 21:07:46,841 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} [2022-11-18 21:07:46,842 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 10 predicate places. [2022-11-18 21:07:46,842 INFO L495 AbstractCegarLoop]: Abstraction has has 876 places, 945 transitions, 2169 flow [2022-11-18 21:07:46,843 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) [2022-11-18 21:07:46,844 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:07:46,844 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] [2022-11-18 21:07:46,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 21:07:47,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:07:47,051 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-18 21:07:47,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:07:47,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1976264290, now seen corresponding path program 2 times [2022-11-18 21:07:47,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:07:47,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193458833] [2022-11-18 21:07:47,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:07:47,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:07:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:47,338 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:07:47,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:07:47,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193458833] [2022-11-18 21:07:47,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193458833] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:07:47,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764830207] [2022-11-18 21:07:47,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:07:47,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:07:47,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:07:47,341 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:07:47,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 21:07:47,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 21:07:47,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:07:47,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:07:47,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:07:47,629 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-18 21:07:47,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:07:47,790 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-18 21:07:47,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764830207] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:07:47,791 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:07:47,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 17 [2022-11-18 21:07:47,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754427543] [2022-11-18 21:07:47,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:07:47,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 21:07:47,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:07:47,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 21:07:47,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-11-18 21:07:47,806 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 878 out of 970 [2022-11-18 21:07:47,966 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) [2022-11-18 21:07:47,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:07:47,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 878 of 970 [2022-11-18 21:07:47,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:07:50,693 INFO L130 PetriNetUnfolder]: 319/4672 cut-off events. [2022-11-18 21:07:50,693 INFO L131 PetriNetUnfolder]: For 189/201 co-relation queries the response was YES. [2022-11-18 21:07:50,814 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. [2022-11-18 21:07:51,028 INFO L137 encePairwiseOnDemand]: 946/970 looper letters, 127 selfloop transitions, 67 changer transitions 0/1045 dead transitions. [2022-11-18 21:07:51,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 892 places, 1045 transitions, 2804 flow [2022-11-18 21:07:51,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 21:07:51,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-18 21:07:51,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 17757 transitions. [2022-11-18 21:07:51,060 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9153092783505155 [2022-11-18 21:07:51,061 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 17757 transitions. [2022-11-18 21:07:51,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 17757 transitions. [2022-11-18 21:07:51,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:07:51,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 17757 transitions. [2022-11-18 21:07:51,099 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) [2022-11-18 21:07:51,127 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) [2022-11-18 21:07:51,134 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) [2022-11-18 21:07:51,134 INFO L175 Difference]: Start difference. First operand has 876 places, 945 transitions, 2169 flow. Second operand 20 states and 17757 transitions. [2022-11-18 21:07:51,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 892 places, 1045 transitions, 2804 flow [2022-11-18 21:07:51,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 883 places, 1045 transitions, 2721 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-18 21:07:51,155 INFO L231 Difference]: Finished difference. Result has 884 places, 950 transitions, 2243 flow [2022-11-18 21:07:51,157 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} [2022-11-18 21:07:51,158 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 18 predicate places. [2022-11-18 21:07:51,158 INFO L495 AbstractCegarLoop]: Abstraction has has 884 places, 950 transitions, 2243 flow [2022-11-18 21:07:51,163 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) [2022-11-18 21:07:51,163 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:07:51,163 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] [2022-11-18 21:07:51,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 21:07:51,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:07:51,375 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-18 21:07:51,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:07:51,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1358411985, now seen corresponding path program 1 times [2022-11-18 21:07:51,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:07:51,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170260191] [2022-11-18 21:07:51,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:07:51,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:07:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:51,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:07:51,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:07:51,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170260191] [2022-11-18 21:07:51,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170260191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:07:51,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:07:51,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:07:51,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835276107] [2022-11-18 21:07:51,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:07:51,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:07:51,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:07:51,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:07:51,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:07:51,529 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 893 out of 970 [2022-11-18 21:07:51,534 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) [2022-11-18 21:07:51,534 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:07:51,534 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 893 of 970 [2022-11-18 21:07:51,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:07:53,353 INFO L130 PetriNetUnfolder]: 266/3937 cut-off events. [2022-11-18 21:07:53,353 INFO L131 PetriNetUnfolder]: For 245/255 co-relation queries the response was YES. [2022-11-18 21:07:53,423 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. [2022-11-18 21:07:53,476 INFO L137 encePairwiseOnDemand]: 955/970 looper letters, 59 selfloop transitions, 20 changer transitions 0/954 dead transitions. [2022-11-18 21:07:53,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 888 places, 954 transitions, 2405 flow [2022-11-18 21:07:53,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:07:53,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:07:53,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 4518 transitions. [2022-11-18 21:07:53,487 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9315463917525774 [2022-11-18 21:07:53,487 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 4518 transitions. [2022-11-18 21:07:53,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 4518 transitions. [2022-11-18 21:07:53,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:07:53,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 4518 transitions. [2022-11-18 21:07:53,499 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) [2022-11-18 21:07:53,508 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) [2022-11-18 21:07:53,511 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) [2022-11-18 21:07:53,511 INFO L175 Difference]: Start difference. First operand has 884 places, 950 transitions, 2243 flow. Second operand 5 states and 4518 transitions. [2022-11-18 21:07:53,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 888 places, 954 transitions, 2405 flow [2022-11-18 21:07:53,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 873 places, 954 transitions, 2261 flow, removed 7 selfloop flow, removed 15 redundant places. [2022-11-18 21:07:53,533 INFO L231 Difference]: Finished difference. Result has 874 places, 948 transitions, 2137 flow [2022-11-18 21:07:53,534 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} [2022-11-18 21:07:53,536 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 8 predicate places. [2022-11-18 21:07:53,537 INFO L495 AbstractCegarLoop]: Abstraction has has 874 places, 948 transitions, 2137 flow [2022-11-18 21:07:53,538 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) [2022-11-18 21:07:53,538 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:07:53,539 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] [2022-11-18 21:07:53,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 21:07:53,539 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-18 21:07:53,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:07:53,540 INFO L85 PathProgramCache]: Analyzing trace with hash -880091052, now seen corresponding path program 1 times [2022-11-18 21:07:53,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:07:53,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413855498] [2022-11-18 21:07:53,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:07:53,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:07:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:53,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 21:07:53,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:07:53,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413855498] [2022-11-18 21:07:53,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413855498] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:07:53,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736337986] [2022-11-18 21:07:53,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:07:53,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:07:53,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:07:53,848 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:07:53,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 21:07:54,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:54,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 21:07:54,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:07:54,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 21:07:54,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:07:54,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 21:07:54,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736337986] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:07:54,244 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:07:54,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-18 21:07:54,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895597929] [2022-11-18 21:07:54,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:07:54,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 21:07:54,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:07:54,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 21:07:54,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-18 21:07:54,263 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 878 out of 970 [2022-11-18 21:07:54,279 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) [2022-11-18 21:07:54,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:07:54,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 878 of 970 [2022-11-18 21:07:54,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:07:55,575 INFO L130 PetriNetUnfolder]: 160/2467 cut-off events. [2022-11-18 21:07:55,575 INFO L131 PetriNetUnfolder]: For 73/79 co-relation queries the response was YES. [2022-11-18 21:07:55,628 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. [2022-11-18 21:07:55,648 INFO L137 encePairwiseOnDemand]: 946/970 looper letters, 74 selfloop transitions, 46 changer transitions 0/971 dead transitions. [2022-11-18 21:07:55,648 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 884 places, 971 transitions, 2433 flow [2022-11-18 21:07:55,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 21:07:55,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 21:07:55,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 9756 transitions. [2022-11-18 21:07:55,664 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9143392689784442 [2022-11-18 21:07:55,664 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 9756 transitions. [2022-11-18 21:07:55,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 9756 transitions. [2022-11-18 21:07:55,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:07:55,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 9756 transitions. [2022-11-18 21:07:55,691 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) [2022-11-18 21:07:55,875 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) [2022-11-18 21:07:55,877 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) [2022-11-18 21:07:55,877 INFO L175 Difference]: Start difference. First operand has 874 places, 948 transitions, 2137 flow. Second operand 11 states and 9756 transitions. [2022-11-18 21:07:55,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 884 places, 971 transitions, 2433 flow [2022-11-18 21:07:55,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 880 places, 971 transitions, 2401 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 21:07:55,893 INFO L231 Difference]: Finished difference. Result has 883 places, 947 transitions, 2250 flow [2022-11-18 21:07:55,894 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} [2022-11-18 21:07:55,897 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 17 predicate places. [2022-11-18 21:07:55,897 INFO L495 AbstractCegarLoop]: Abstraction has has 883 places, 947 transitions, 2250 flow [2022-11-18 21:07:55,900 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) [2022-11-18 21:07:55,900 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:07:55,900 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] [2022-11-18 21:07:55,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 21:07:56,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:07:56,106 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-18 21:07:56,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:07:56,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1377829278, now seen corresponding path program 2 times [2022-11-18 21:07:56,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:07:56,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983471565] [2022-11-18 21:07:56,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:07:56,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:07:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:56,482 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-18 21:07:56,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:07:56,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983471565] [2022-11-18 21:07:56,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983471565] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:07:56,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295796176] [2022-11-18 21:07:56,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:07:56,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:07:56,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:07:56,484 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:07:56,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 21:07:56,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 21:07:56,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:07:56,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:07:56,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:07:56,988 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-18 21:07:56,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:07:56,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295796176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:07:56,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:07:56,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2022-11-18 21:07:56,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885627669] [2022-11-18 21:07:56,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:07:56,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:07:56,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:07:56,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:07:56,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-11-18 21:07:56,995 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-18 21:07:57,000 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) [2022-11-18 21:07:57,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:07:57,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-18 21:07:57,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:08:00,596 INFO L130 PetriNetUnfolder]: 880/8308 cut-off events. [2022-11-18 21:08:00,596 INFO L131 PetriNetUnfolder]: For 167/173 co-relation queries the response was YES. [2022-11-18 21:08:00,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9896 conditions, 8308 events. 880/8308 cut-off events. For 167/173 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 93801 event pairs, 132 based on Foata normal form. 0/6907 useless extension candidates. Maximal degree in co-relation 3130. Up to 357 conditions per place. [2022-11-18 21:08:00,795 INFO L137 encePairwiseOnDemand]: 962/970 looper letters, 61 selfloop transitions, 7 changer transitions 0/964 dead transitions. [2022-11-18 21:08:00,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 888 places, 964 transitions, 2433 flow [2022-11-18 21:08:00,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:08:00,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 21:08:00,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6229 transitions. [2022-11-18 21:08:00,806 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9173784977908689 [2022-11-18 21:08:00,806 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6229 transitions. [2022-11-18 21:08:00,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6229 transitions. [2022-11-18 21:08:00,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:08:00,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6229 transitions. [2022-11-18 21:08:00,818 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) [2022-11-18 21:08:00,826 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) [2022-11-18 21:08:00,827 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) [2022-11-18 21:08:00,827 INFO L175 Difference]: Start difference. First operand has 883 places, 947 transitions, 2250 flow. Second operand 7 states and 6229 transitions. [2022-11-18 21:08:00,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 888 places, 964 transitions, 2433 flow [2022-11-18 21:08:00,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 879 places, 964 transitions, 2362 flow, removed 3 selfloop flow, removed 9 redundant places. [2022-11-18 21:08:00,843 INFO L231 Difference]: Finished difference. Result has 879 places, 946 transitions, 2191 flow [2022-11-18 21:08:00,845 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} [2022-11-18 21:08:00,846 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 13 predicate places. [2022-11-18 21:08:00,846 INFO L495 AbstractCegarLoop]: Abstraction has has 879 places, 946 transitions, 2191 flow [2022-11-18 21:08:00,847 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) [2022-11-18 21:08:00,847 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:08:00,847 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] [2022-11-18 21:08:00,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 21:08:01,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 21:08:01,053 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-18 21:08:01,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:01,054 INFO L85 PathProgramCache]: Analyzing trace with hash -236962919, now seen corresponding path program 1 times [2022-11-18 21:08:01,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:01,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031473000] [2022-11-18 21:08:01,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:01,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:01,212 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-18 21:08:01,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:01,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031473000] [2022-11-18 21:08:01,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031473000] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:08:01,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:08:01,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:08:01,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078312747] [2022-11-18 21:08:01,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:08:01,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:08:01,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:01,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:08:01,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:08:01,238 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-18 21:08:01,260 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) [2022-11-18 21:08:01,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:08:01,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-18 21:08:01,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:08:05,107 INFO L130 PetriNetUnfolder]: 961/9898 cut-off events. [2022-11-18 21:08:05,107 INFO L131 PetriNetUnfolder]: For 145/151 co-relation queries the response was YES. [2022-11-18 21:08:05,292 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. [2022-11-18 21:08:05,363 INFO L137 encePairwiseOnDemand]: 958/970 looper letters, 64 selfloop transitions, 8 changer transitions 0/968 dead transitions. [2022-11-18 21:08:05,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 880 places, 968 transitions, 2385 flow [2022-11-18 21:08:05,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:08:05,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 21:08:05,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3596 transitions. [2022-11-18 21:08:05,368 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9268041237113402 [2022-11-18 21:08:05,368 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3596 transitions. [2022-11-18 21:08:05,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3596 transitions. [2022-11-18 21:08:05,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:08:05,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3596 transitions. [2022-11-18 21:08:05,375 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) [2022-11-18 21:08:05,380 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) [2022-11-18 21:08:05,381 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) [2022-11-18 21:08:05,381 INFO L175 Difference]: Start difference. First operand has 879 places, 946 transitions, 2191 flow. Second operand 4 states and 3596 transitions. [2022-11-18 21:08:05,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 880 places, 968 transitions, 2385 flow [2022-11-18 21:08:05,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 876 places, 968 transitions, 2375 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 21:08:05,398 INFO L231 Difference]: Finished difference. Result has 879 places, 948 transitions, 2227 flow [2022-11-18 21:08:05,400 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} [2022-11-18 21:08:05,400 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 13 predicate places. [2022-11-18 21:08:05,400 INFO L495 AbstractCegarLoop]: Abstraction has has 879 places, 948 transitions, 2227 flow [2022-11-18 21:08:05,401 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) [2022-11-18 21:08:05,401 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:08:05,402 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] [2022-11-18 21:08:05,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 21:08:05,402 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-18 21:08:05,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:05,403 INFO L85 PathProgramCache]: Analyzing trace with hash 2005436054, now seen corresponding path program 1 times [2022-11-18 21:08:05,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:05,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047393758] [2022-11-18 21:08:05,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:05,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:05,759 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-18 21:08:05,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:05,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047393758] [2022-11-18 21:08:05,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047393758] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:08:05,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174726662] [2022-11-18 21:08:05,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:05,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:08:05,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:08:05,762 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:08:05,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 21:08:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:05,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 21:08:05,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:08:06,202 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-18 21:08:06,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:08:06,382 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-18 21:08:06,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174726662] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:08:06,382 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:08:06,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-18 21:08:06,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946477251] [2022-11-18 21:08:06,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:08:06,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 21:08:06,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:06,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 21:08:06,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-18 21:08:06,399 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 878 out of 970 [2022-11-18 21:08:06,421 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) [2022-11-18 21:08:06,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:08:06,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 878 of 970 [2022-11-18 21:08:06,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:08:07,540 INFO L130 PetriNetUnfolder]: 52/1117 cut-off events. [2022-11-18 21:08:07,540 INFO L131 PetriNetUnfolder]: For 121/131 co-relation queries the response was YES. [2022-11-18 21:08:07,563 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. [2022-11-18 21:08:07,573 INFO L137 encePairwiseOnDemand]: 946/970 looper letters, 83 selfloop transitions, 51 changer transitions 0/986 dead transitions. [2022-11-18 21:08:07,573 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 895 places, 986 transitions, 2600 flow [2022-11-18 21:08:07,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 21:08:07,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 21:08:07,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 15066 transitions. [2022-11-18 21:08:07,597 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9136446331109763 [2022-11-18 21:08:07,597 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 15066 transitions. [2022-11-18 21:08:07,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 15066 transitions. [2022-11-18 21:08:07,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:08:07,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 15066 transitions. [2022-11-18 21:08:07,632 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) [2022-11-18 21:08:07,653 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) [2022-11-18 21:08:07,657 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) [2022-11-18 21:08:07,657 INFO L175 Difference]: Start difference. First operand has 879 places, 948 transitions, 2227 flow. Second operand 17 states and 15066 transitions. [2022-11-18 21:08:07,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 895 places, 986 transitions, 2600 flow [2022-11-18 21:08:07,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 895 places, 986 transitions, 2600 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 21:08:07,679 INFO L231 Difference]: Finished difference. Result has 897 places, 944 transitions, 2332 flow [2022-11-18 21:08:07,680 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} [2022-11-18 21:08:07,681 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 31 predicate places. [2022-11-18 21:08:07,681 INFO L495 AbstractCegarLoop]: Abstraction has has 897 places, 944 transitions, 2332 flow [2022-11-18 21:08:07,684 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) [2022-11-18 21:08:07,685 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:08:07,685 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] [2022-11-18 21:08:07,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 21:08:07,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a7842d-a512-43f5-b2d5-a0316fabcca6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:08:07,896 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-18 21:08:07,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:07,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1660263520, now seen corresponding path program 2 times [2022-11-18 21:08:07,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:07,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824242207] [2022-11-18 21:08:07,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:07,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:08,267 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-18 21:08:08,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:08,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824242207] [2022-11-18 21:08:08,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824242207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:08:08,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:08:08,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:08:08,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997623362] [2022-11-18 21:08:08,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:08:08,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:08:08,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:08,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:08:08,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:08:08,276 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-18 21:08:08,282 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) [2022-11-18 21:08:08,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:08:08,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-18 21:08:08,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:08:10,563 INFO L130 PetriNetUnfolder]: 904/5188 cut-off events. [2022-11-18 21:08:10,563 INFO L131 PetriNetUnfolder]: For 617/1834 co-relation queries the response was YES. [2022-11-18 21:08:10,664 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. [2022-11-18 21:08:10,713 INFO L137 encePairwiseOnDemand]: 962/970 looper letters, 59 selfloop transitions, 7 changer transitions 0/959 dead transitions. [2022-11-18 21:08:10,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 902 places, 959 transitions, 2505 flow [2022-11-18 21:08:10,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:08:10,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 21:08:10,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6227 transitions. [2022-11-18 21:08:10,720 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9170839469808542 [2022-11-18 21:08:10,720 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6227 transitions. [2022-11-18 21:08:10,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6227 transitions. [2022-11-18 21:08:10,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:08:10,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6227 transitions. [2022-11-18 21:08:10,729 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) [2022-11-18 21:08:10,736 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) [2022-11-18 21:08:10,737 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) [2022-11-18 21:08:10,738 INFO L175 Difference]: Start difference. First operand has 897 places, 944 transitions, 2332 flow. Second operand 7 states and 6227 transitions. [2022-11-18 21:08:10,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 902 places, 959 transitions, 2505 flow [2022-11-18 21:08:10,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 886 places, 959 transitions, 2403 flow, removed 0 selfloop flow, removed 16 redundant places. [2022-11-18 21:08:10,756 INFO L231 Difference]: Finished difference. Result has 886 places, 943 transitions, 2242 flow [2022-11-18 21:08:10,757 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} [2022-11-18 21:08:10,758 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 20 predicate places. [2022-11-18 21:08:10,758 INFO L495 AbstractCegarLoop]: Abstraction has has 886 places, 943 transitions, 2242 flow [2022-11-18 21:08:10,759 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) [2022-11-18 21:08:10,759 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:08:10,760 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] [2022-11-18 21:08:10,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 21:08:10,760 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-18 21:08:10,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:10,761 INFO L85 PathProgramCache]: Analyzing trace with hash -71435772, now seen corresponding path program 1 times [2022-11-18 21:08:10,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:10,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618345629] [2022-11-18 21:08:10,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:10,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:10,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:11,079 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-18 21:08:11,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:11,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618345629] [2022-11-18 21:08:11,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618345629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:08:11,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:08:11,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:08:11,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089532825] [2022-11-18 21:08:11,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:08:11,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:08:11,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:11,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:08:11,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:08:11,085 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-18 21:08:11,087 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) [2022-11-18 21:08:11,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:08:11,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-18 21:08:11,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:08:13,353 INFO L130 PetriNetUnfolder]: 519/3742 cut-off events. [2022-11-18 21:08:13,353 INFO L131 PetriNetUnfolder]: For 466/2406 co-relation queries the response was YES. [2022-11-18 21:08:13,449 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. [2022-11-18 21:08:13,510 INFO L137 encePairwiseOnDemand]: 958/970 looper letters, 63 selfloop transitions, 8 changer transitions 0/964 dead transitions. [2022-11-18 21:08:13,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 887 places, 964 transitions, 2431 flow [2022-11-18 21:08:13,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:08:13,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 21:08:13,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3595 transitions. [2022-11-18 21:08:13,516 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9265463917525774 [2022-11-18 21:08:13,516 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3595 transitions. [2022-11-18 21:08:13,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3595 transitions. [2022-11-18 21:08:13,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:08:13,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3595 transitions. [2022-11-18 21:08:13,524 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) [2022-11-18 21:08:13,529 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) [2022-11-18 21:08:13,530 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) [2022-11-18 21:08:13,530 INFO L175 Difference]: Start difference. First operand has 886 places, 943 transitions, 2242 flow. Second operand 4 states and 3595 transitions. [2022-11-18 21:08:13,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 887 places, 964 transitions, 2431 flow [2022-11-18 21:08:13,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 883 places, 964 transitions, 2421 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 21:08:13,552 INFO L231 Difference]: Finished difference. Result has 886 places, 945 transitions, 2278 flow [2022-11-18 21:08:13,553 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} [2022-11-18 21:08:13,554 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 20 predicate places. [2022-11-18 21:08:13,554 INFO L495 AbstractCegarLoop]: Abstraction has has 886 places, 945 transitions, 2278 flow [2022-11-18 21:08:13,555 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) [2022-11-18 21:08:13,555 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:08:13,555 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] [2022-11-18 21:08:13,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 21:08:13,556 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-18 21:08:13,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:13,556 INFO L85 PathProgramCache]: Analyzing trace with hash 133002594, now seen corresponding path program 1 times [2022-11-18 21:08:13,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:13,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311977868] [2022-11-18 21:08:13,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:13,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:13,923 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-18 21:08:13,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:13,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311977868] [2022-11-18 21:08:13,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311977868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:08:13,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:08:13,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:08:13,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394702052] [2022-11-18 21:08:13,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:08:13,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:08:13,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:13,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:08:13,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:08:13,933 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-18 21:08:13,939 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) [2022-11-18 21:08:13,940 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:08:13,940 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-18 21:08:13,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:08:16,327 INFO L130 PetriNetUnfolder]: 366/3998 cut-off events. [2022-11-18 21:08:16,328 INFO L131 PetriNetUnfolder]: For 259/1655 co-relation queries the response was YES. [2022-11-18 21:08:16,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5099 conditions, 3998 events. 366/3998 cut-off events. For 259/1655 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 38983 event pairs, 78 based on Foata normal form. 8/3440 useless extension candidates. Maximal degree in co-relation 4639. Up to 247 conditions per place. [2022-11-18 21:08:16,450 INFO L137 encePairwiseOnDemand]: 963/970 looper letters, 61 selfloop transitions, 6 changer transitions 0/962 dead transitions. [2022-11-18 21:08:16,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 891 places, 962 transitions, 2459 flow [2022-11-18 21:08:16,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:08:16,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 21:08:16,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6226 transitions. [2022-11-18 21:08:16,458 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9169366715758468 [2022-11-18 21:08:16,458 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6226 transitions. [2022-11-18 21:08:16,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6226 transitions. [2022-11-18 21:08:16,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:08:16,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6226 transitions. [2022-11-18 21:08:16,468 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) [2022-11-18 21:08:16,475 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) [2022-11-18 21:08:16,477 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) [2022-11-18 21:08:16,477 INFO L175 Difference]: Start difference. First operand has 886 places, 945 transitions, 2278 flow. Second operand 7 states and 6226 transitions. [2022-11-18 21:08:16,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 891 places, 962 transitions, 2459 flow [2022-11-18 21:08:16,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 891 places, 962 transitions, 2459 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 21:08:16,497 INFO L231 Difference]: Finished difference. Result has 891 places, 944 transitions, 2288 flow [2022-11-18 21:08:16,499 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} [2022-11-18 21:08:16,500 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 25 predicate places. [2022-11-18 21:08:16,500 INFO L495 AbstractCegarLoop]: Abstraction has has 891 places, 944 transitions, 2288 flow [2022-11-18 21:08:16,501 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) [2022-11-18 21:08:16,501 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:08:16,502 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] [2022-11-18 21:08:16,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 21:08:16,502 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-18 21:08:16,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:16,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1756507324, now seen corresponding path program 1 times [2022-11-18 21:08:16,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:16,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176749268] [2022-11-18 21:08:16,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:16,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:16,688 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-18 21:08:16,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:16,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176749268] [2022-11-18 21:08:16,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176749268] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:08:16,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:08:16,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:08:16,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047927531] [2022-11-18 21:08:16,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:08:16,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:08:16,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:16,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:08:16,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:08:16,695 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-18 21:08:16,698 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) [2022-11-18 21:08:16,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:08:16,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-18 21:08:16,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:08:18,694 INFO L130 PetriNetUnfolder]: 310/4127 cut-off events. [2022-11-18 21:08:18,695 INFO L131 PetriNetUnfolder]: For 238/1880 co-relation queries the response was YES. [2022-11-18 21:08:18,806 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. [2022-11-18 21:08:18,847 INFO L137 encePairwiseOnDemand]: 962/970 looper letters, 63 selfloop transitions, 6 changer transitions 0/962 dead transitions. [2022-11-18 21:08:18,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 894 places, 962 transitions, 2462 flow [2022-11-18 21:08:18,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:08:18,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 21:08:18,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3591 transitions. [2022-11-18 21:08:18,852 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9255154639175258 [2022-11-18 21:08:18,852 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3591 transitions. [2022-11-18 21:08:18,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3591 transitions. [2022-11-18 21:08:19,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:08:19,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3591 transitions. [2022-11-18 21:08:19,085 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) [2022-11-18 21:08:19,090 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) [2022-11-18 21:08:19,091 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) [2022-11-18 21:08:19,091 INFO L175 Difference]: Start difference. First operand has 891 places, 944 transitions, 2288 flow. Second operand 4 states and 3591 transitions. [2022-11-18 21:08:19,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 894 places, 962 transitions, 2462 flow [2022-11-18 21:08:19,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 889 places, 962 transitions, 2448 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 21:08:19,118 INFO L231 Difference]: Finished difference. Result has 889 places, 942 transitions, 2274 flow [2022-11-18 21:08:19,119 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} [2022-11-18 21:08:19,121 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 23 predicate places. [2022-11-18 21:08:19,121 INFO L495 AbstractCegarLoop]: Abstraction has has 889 places, 942 transitions, 2274 flow [2022-11-18 21:08:19,122 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) [2022-11-18 21:08:19,122 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:08:19,123 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] [2022-11-18 21:08:19,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 21:08:19,123 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-18 21:08:19,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:19,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1382850275, now seen corresponding path program 1 times [2022-11-18 21:08:19,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:19,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170509182] [2022-11-18 21:08:19,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:19,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:19,529 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-18 21:08:19,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:19,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170509182] [2022-11-18 21:08:19,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170509182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:08:19,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:08:19,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:08:19,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320057489] [2022-11-18 21:08:19,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:08:19,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:08:19,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:19,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:08:19,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:08:19,539 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-18 21:08:19,545 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) [2022-11-18 21:08:19,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:08:19,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-18 21:08:19,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:08:21,825 INFO L130 PetriNetUnfolder]: 355/3983 cut-off events. [2022-11-18 21:08:21,825 INFO L131 PetriNetUnfolder]: For 235/2413 co-relation queries the response was YES. [2022-11-18 21:08:21,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5074 conditions, 3983 events. 355/3983 cut-off events. For 235/2413 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 38284 event pairs, 108 based on Foata normal form. 12/3437 useless extension candidates. Maximal degree in co-relation 4614. Up to 275 conditions per place. [2022-11-18 21:08:21,980 INFO L137 encePairwiseOnDemand]: 963/970 looper letters, 51 selfloop transitions, 6 changer transitions 0/952 dead transitions. [2022-11-18 21:08:21,980 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 894 places, 952 transitions, 2419 flow [2022-11-18 21:08:21,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:08:21,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 21:08:21,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6218 transitions. [2022-11-18 21:08:21,988 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9157584683357879 [2022-11-18 21:08:21,988 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6218 transitions. [2022-11-18 21:08:21,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6218 transitions. [2022-11-18 21:08:21,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:08:21,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6218 transitions. [2022-11-18 21:08:21,997 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) [2022-11-18 21:08:22,004 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) [2022-11-18 21:08:22,005 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) [2022-11-18 21:08:22,005 INFO L175 Difference]: Start difference. First operand has 889 places, 942 transitions, 2274 flow. Second operand 7 states and 6218 transitions. [2022-11-18 21:08:22,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 894 places, 952 transitions, 2419 flow [2022-11-18 21:08:22,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 892 places, 952 transitions, 2409 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 21:08:22,026 INFO L231 Difference]: Finished difference. Result has 892 places, 941 transitions, 2274 flow [2022-11-18 21:08:22,027 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} [2022-11-18 21:08:22,028 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 26 predicate places. [2022-11-18 21:08:22,028 INFO L495 AbstractCegarLoop]: Abstraction has has 892 places, 941 transitions, 2274 flow [2022-11-18 21:08:22,029 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) [2022-11-18 21:08:22,029 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:08:22,030 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] [2022-11-18 21:08:22,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 21:08:22,030 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-18 21:08:22,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:22,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1676258872, now seen corresponding path program 1 times [2022-11-18 21:08:22,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:22,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209223545] [2022-11-18 21:08:22,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:22,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:22,288 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-18 21:08:22,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:22,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209223545] [2022-11-18 21:08:22,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209223545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:08:22,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:08:22,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:08:22,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766092166] [2022-11-18 21:08:22,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:08:22,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:08:22,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:22,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:08:22,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:08:22,296 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-18 21:08:22,300 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) [2022-11-18 21:08:22,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:08:22,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-18 21:08:22,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:08:26,243 INFO L130 PetriNetUnfolder]: 2551/10141 cut-off events. [2022-11-18 21:08:26,244 INFO L131 PetriNetUnfolder]: For 2156/3011 co-relation queries the response was YES. [2022-11-18 21:08:26,431 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. [2022-11-18 21:08:26,503 INFO L137 encePairwiseOnDemand]: 962/970 looper letters, 57 selfloop transitions, 7 changer transitions 0/954 dead transitions. [2022-11-18 21:08:26,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 897 places, 954 transitions, 2434 flow [2022-11-18 21:08:26,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:08:26,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 21:08:26,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6225 transitions. [2022-11-18 21:08:26,511 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9167893961708394 [2022-11-18 21:08:26,511 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6225 transitions. [2022-11-18 21:08:26,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6225 transitions. [2022-11-18 21:08:26,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:08:26,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6225 transitions. [2022-11-18 21:08:26,525 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) [2022-11-18 21:08:26,531 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) [2022-11-18 21:08:26,533 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) [2022-11-18 21:08:26,533 INFO L175 Difference]: Start difference. First operand has 892 places, 941 transitions, 2274 flow. Second operand 7 states and 6225 transitions. [2022-11-18 21:08:26,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 897 places, 954 transitions, 2434 flow [2022-11-18 21:08:26,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 893 places, 954 transitions, 2424 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 21:08:26,552 INFO L231 Difference]: Finished difference. Result has 893 places, 940 transitions, 2276 flow [2022-11-18 21:08:26,554 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} [2022-11-18 21:08:26,555 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 27 predicate places. [2022-11-18 21:08:26,555 INFO L495 AbstractCegarLoop]: Abstraction has has 893 places, 940 transitions, 2276 flow [2022-11-18 21:08:26,556 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) [2022-11-18 21:08:26,556 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:08:26,556 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] [2022-11-18 21:08:26,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 21:08:26,557 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-18 21:08:26,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:26,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1708597270, now seen corresponding path program 1 times [2022-11-18 21:08:26,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:26,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100982071] [2022-11-18 21:08:26,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:26,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:26,769 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-18 21:08:26,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:26,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100982071] [2022-11-18 21:08:26,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100982071] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:08:26,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:08:26,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:08:26,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439447053] [2022-11-18 21:08:26,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:08:26,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:08:26,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:26,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:08:26,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:08:26,775 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-18 21:08:26,777 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) [2022-11-18 21:08:26,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:08:26,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-18 21:08:26,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:08:28,629 INFO L130 PetriNetUnfolder]: 310/4268 cut-off events. [2022-11-18 21:08:28,629 INFO L131 PetriNetUnfolder]: For 171/1933 co-relation queries the response was YES. [2022-11-18 21:08:28,751 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. [2022-11-18 21:08:28,789 INFO L137 encePairwiseOnDemand]: 962/970 looper letters, 58 selfloop transitions, 6 changer transitions 0/958 dead transitions. [2022-11-18 21:08:28,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 893 places, 958 transitions, 2443 flow [2022-11-18 21:08:28,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:08:28,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 21:08:28,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3586 transitions. [2022-11-18 21:08:28,793 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9242268041237114 [2022-11-18 21:08:28,793 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3586 transitions. [2022-11-18 21:08:28,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3586 transitions. [2022-11-18 21:08:28,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:08:28,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3586 transitions. [2022-11-18 21:08:28,798 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) [2022-11-18 21:08:28,801 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) [2022-11-18 21:08:28,802 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) [2022-11-18 21:08:28,802 INFO L175 Difference]: Start difference. First operand has 893 places, 940 transitions, 2276 flow. Second operand 4 states and 3586 transitions. [2022-11-18 21:08:28,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 893 places, 958 transitions, 2443 flow [2022-11-18 21:08:28,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 888 places, 958 transitions, 2428 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 21:08:28,821 INFO L231 Difference]: Finished difference. Result has 889 places, 940 transitions, 2278 flow [2022-11-18 21:08:28,822 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} [2022-11-18 21:08:28,823 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 23 predicate places. [2022-11-18 21:08:28,823 INFO L495 AbstractCegarLoop]: Abstraction has has 889 places, 940 transitions, 2278 flow [2022-11-18 21:08:28,824 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) [2022-11-18 21:08:28,824 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:08:28,824 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] [2022-11-18 21:08:28,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 21:08:28,825 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-18 21:08:28,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:28,825 INFO L85 PathProgramCache]: Analyzing trace with hash -424414583, now seen corresponding path program 1 times [2022-11-18 21:08:28,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:28,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411663548] [2022-11-18 21:08:28,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:28,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:28,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:28,986 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-18 21:08:28,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:28,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411663548] [2022-11-18 21:08:28,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411663548] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:08:28,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:08:28,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:08:28,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078575658] [2022-11-18 21:08:28,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:08:28,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:08:28,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:28,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:08:28,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:08:28,991 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-18 21:08:28,993 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) [2022-11-18 21:08:28,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:08:28,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-18 21:08:28,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:08:33,616 INFO L130 PetriNetUnfolder]: 2816/12048 cut-off events. [2022-11-18 21:08:33,616 INFO L131 PetriNetUnfolder]: For 2787/4130 co-relation queries the response was YES. [2022-11-18 21:08:33,818 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.