./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/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_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/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_03d7c68a-1228-433f-977d-3b3d769fb88f/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 c80601716e9c0111d78d12f0a88108c91b0aa7215f8e775685e33490f22c8502 --- 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 21:06:35,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 21:06:35,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 21:06:35,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 21:06:35,328 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 21:06:35,330 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 21:06:35,332 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 21:06:35,334 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 21:06:35,336 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 21:06:35,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 21:06:35,344 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 21:06:35,345 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 21:06:35,346 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 21:06:35,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 21:06:35,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 21:06:35,355 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 21:06:35,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 21:06:35,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 21:06:35,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 21:06:35,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 21:06:35,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 21:06:35,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 21:06:35,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 21:06:35,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 21:06:35,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 21:06:35,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 21:06:35,399 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 21:06:35,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 21:06:35,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 21:06:35,403 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 21:06:35,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 21:06:35,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 21:06:35,407 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 21:06:35,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 21:06:35,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 21:06:35,412 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 21:06:35,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 21:06:35,415 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 21:06:35,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 21:06:35,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 21:06:35,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 21:06:35,419 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 21:06:35,475 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 21:06:35,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 21:06:35,477 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 21:06:35,477 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 21:06:35,478 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 21:06:35,478 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 21:06:35,479 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 21:06:35,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 21:06:35,480 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 21:06:35,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 21:06:35,482 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 21:06:35,482 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 21:06:35,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 21:06:35,482 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 21:06:35,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 21:06:35,483 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 21:06:35,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 21:06:35,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 21:06:35,484 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 21:06:35,484 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 21:06:35,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 21:06:35,485 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 21:06:35,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 21:06:35,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 21:06:35,485 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 21:06:35,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 21:06:35,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:06:35,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 21:06:35,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 21:06:35,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 21:06:35,487 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 21:06:35,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 21:06:35,488 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 21:06:35,488 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 21:06:35,489 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 21:06:35,489 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_03d7c68a-1228-433f-977d-3b3d769fb88f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c80601716e9c0111d78d12f0a88108c91b0aa7215f8e775685e33490f22c8502 [2022-11-18 21:06:35,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 21:06:35,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 21:06:35,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 21:06:35,864 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 21:06:35,870 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 21:06:35,872 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2022-11-18 21:06:35,978 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/data/ca5fc074d/cfccea845f724cbd889aded84bd3cfe6/FLAGf273734ca [2022-11-18 21:06:36,657 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 21:06:36,659 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2022-11-18 21:06:36,672 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/data/ca5fc074d/cfccea845f724cbd889aded84bd3cfe6/FLAGf273734ca [2022-11-18 21:06:37,003 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/data/ca5fc074d/cfccea845f724cbd889aded84bd3cfe6 [2022-11-18 21:06:37,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 21:06:37,010 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 21:06:37,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 21:06:37,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 21:06:37,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 21:06:37,020 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:06:37" (1/1) ... [2022-11-18 21:06:37,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@618f2d03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:06:37, skipping insertion in model container [2022-11-18 21:06:37,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:06:37" (1/1) ... [2022-11-18 21:06:37,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 21:06:37,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 21:06:37,369 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_03d7c68a-1228-433f-977d-3b3d769fb88f/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c[2870,2883] [2022-11-18 21:06:37,376 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:06:37,393 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 21:06:37,442 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_03d7c68a-1228-433f-977d-3b3d769fb88f/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c[2870,2883] [2022-11-18 21:06:37,458 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:06:37,481 INFO L208 MainTranslator]: Completed translation [2022-11-18 21:06:37,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:06:37 WrapperNode [2022-11-18 21:06:37,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 21:06:37,485 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 21:06:37,485 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 21:06:37,486 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 21:06:37,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:06:37" (1/1) ... [2022-11-18 21:06:37,521 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:06:37" (1/1) ... [2022-11-18 21:06:37,563 INFO L138 Inliner]: procedures = 25, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 175 [2022-11-18 21:06:37,565 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 21:06:37,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 21:06:37,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 21:06:37,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 21:06:37,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:06:37" (1/1) ... [2022-11-18 21:06:37,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:06:37" (1/1) ... [2022-11-18 21:06:37,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:06:37" (1/1) ... [2022-11-18 21:06:37,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:06:37" (1/1) ... [2022-11-18 21:06:37,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:06:37" (1/1) ... [2022-11-18 21:06:37,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:06:37" (1/1) ... [2022-11-18 21:06:37,632 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:06:37" (1/1) ... [2022-11-18 21:06:37,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:06:37" (1/1) ... [2022-11-18 21:06:37,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 21:06:37,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 21:06:37,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 21:06:37,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 21:06:37,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:06:37" (1/1) ... [2022-11-18 21:06:37,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:06:37,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:06:37,688 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 21:06:37,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 21:06:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 21:06:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 21:06:37,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 21:06:37,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 21:06:37,758 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 21:06:37,760 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 21:06:37,760 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 21:06:37,761 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 21:06:37,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 21:06:37,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 21:06:37,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 21:06:37,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 21:06:37,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 21:06:37,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 21:06:37,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 21:06:37,763 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 21:06:37,938 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 21:06:37,941 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 21:06:38,381 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 21:06:38,690 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 21:06:38,691 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-18 21:06:38,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:06:38 BoogieIcfgContainer [2022-11-18 21:06:38,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 21:06:38,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 21:06:38,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 21:06:38,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 21:06:38,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:06:37" (1/3) ... [2022-11-18 21:06:38,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@433a368f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:06:38, skipping insertion in model container [2022-11-18 21:06:38,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:06:37" (2/3) ... [2022-11-18 21:06:38,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@433a368f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:06:38, skipping insertion in model container [2022-11-18 21:06:38,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:06:38" (3/3) ... [2022-11-18 21:06:38,707 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-2-nl.wvr.c [2022-11-18 21:06:38,718 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 21:06:38,732 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 21:06:38,733 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-18 21:06:38,733 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 21:06:38,872 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 21:06:38,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 162 transitions, 340 flow [2022-11-18 21:06:39,061 INFO L130 PetriNetUnfolder]: 11/160 cut-off events. [2022-11-18 21:06:39,062 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 21:06:39,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 160 events. 11/160 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 146 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 118. Up to 3 conditions per place. [2022-11-18 21:06:39,069 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 162 transitions, 340 flow [2022-11-18 21:06:39,076 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 141 transitions, 291 flow [2022-11-18 21:06:39,088 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:06:39,097 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;@44b6ac4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:06:39,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-11-18 21:06:39,119 INFO L130 PetriNetUnfolder]: 3/72 cut-off events. [2022-11-18 21:06:39,120 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 21:06:39,120 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:06:39,121 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] [2022-11-18 21:06:39,122 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-18 21:06:39,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:39,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1376634215, now seen corresponding path program 1 times [2022-11-18 21:06:39,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:06:39,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399283017] [2022-11-18 21:06:39,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:39,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:06:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:39,639 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 21:06:39,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:06:39,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399283017] [2022-11-18 21:06:39,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399283017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:06:39,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:06:39,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:06:39,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413189751] [2022-11-18 21:06:39,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:06:39,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:06:39,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:06:39,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:06:39,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:06:39,718 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 162 [2022-11-18 21:06:39,727 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 141 transitions, 291 flow. Second operand has 4 states, 4 states have (on average 129.5) internal successors, (518), 4 states have internal predecessors, (518), 0 states have call successors, (0), 0 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 21:06:39,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:06:39,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 162 [2022-11-18 21:06:39,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:06:40,098 INFO L130 PetriNetUnfolder]: 57/368 cut-off events. [2022-11-18 21:06:40,099 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-18 21:06:40,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 368 events. 57/368 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1405 event pairs, 28 based on Foata normal form. 30/304 useless extension candidates. Maximal degree in co-relation 192. Up to 62 conditions per place. [2022-11-18 21:06:40,112 INFO L137 encePairwiseOnDemand]: 146/162 looper letters, 34 selfloop transitions, 4 changer transitions 3/148 dead transitions. [2022-11-18 21:06:40,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 148 transitions, 390 flow [2022-11-18 21:06:40,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:06:40,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:06:40,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 698 transitions. [2022-11-18 21:06:40,143 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8617283950617284 [2022-11-18 21:06:40,144 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 698 transitions. [2022-11-18 21:06:40,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 698 transitions. [2022-11-18 21:06:40,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:06:40,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 698 transitions. [2022-11-18 21:06:40,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 139.6) internal successors, (698), 5 states have internal predecessors, (698), 0 states have call successors, (0), 0 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 21:06:40,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 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 21:06:40,175 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 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 21:06:40,177 INFO L175 Difference]: Start difference. First operand has 138 places, 141 transitions, 291 flow. Second operand 5 states and 698 transitions. [2022-11-18 21:06:40,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 148 transitions, 390 flow [2022-11-18 21:06:40,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 148 transitions, 380 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 21:06:40,196 INFO L231 Difference]: Finished difference. Result has 139 places, 131 transitions, 290 flow [2022-11-18 21:06:40,198 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=290, PETRI_PLACES=139, PETRI_TRANSITIONS=131} [2022-11-18 21:06:40,206 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 1 predicate places. [2022-11-18 21:06:40,206 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 131 transitions, 290 flow [2022-11-18 21:06:40,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.5) internal successors, (518), 4 states have internal predecessors, (518), 0 states have call successors, (0), 0 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 21:06:40,207 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:06:40,209 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] [2022-11-18 21:06:40,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 21:06:40,209 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-18 21:06:40,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:40,212 INFO L85 PathProgramCache]: Analyzing trace with hash -858895523, now seen corresponding path program 1 times [2022-11-18 21:06:40,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:06:40,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433723309] [2022-11-18 21:06:40,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:40,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:06:40,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:40,596 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 21:06:40,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:06:40,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433723309] [2022-11-18 21:06:40,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433723309] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:06:40,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824525979] [2022-11-18 21:06:40,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:40,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:06:40,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:06:40,622 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:06:40,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 21:06:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:40,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:06:40,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:06:40,911 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 21:06:40,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:06:40,998 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 21:06:40,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824525979] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:06:40,999 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:06:40,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 21:06:41,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601130561] [2022-11-18 21:06:41,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:06:41,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 21:06:41,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:06:41,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 21:06:41,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:06:41,006 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 162 [2022-11-18 21:06:41,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 131 transitions, 290 flow. Second operand has 12 states, 12 states have (on average 130.66666666666666) internal successors, (1568), 12 states have internal predecessors, (1568), 0 states have call successors, (0), 0 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 21:06:41,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:06:41,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 162 [2022-11-18 21:06:41,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:06:41,602 INFO L130 PetriNetUnfolder]: 141/825 cut-off events. [2022-11-18 21:06:41,602 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-11-18 21:06:41,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1200 conditions, 825 events. 141/825 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4415 event pairs, 70 based on Foata normal form. 3/608 useless extension candidates. Maximal degree in co-relation 908. Up to 57 conditions per place. [2022-11-18 21:06:41,610 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 73 selfloop transitions, 18 changer transitions 0/198 dead transitions. [2022-11-18 21:06:41,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 198 transitions, 644 flow [2022-11-18 21:06:41,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 21:06:41,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 21:06:41,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2398 transitions. [2022-11-18 21:06:41,617 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8223593964334706 [2022-11-18 21:06:41,617 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2398 transitions. [2022-11-18 21:06:41,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2398 transitions. [2022-11-18 21:06:41,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:06:41,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2398 transitions. [2022-11-18 21:06:41,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 133.22222222222223) internal successors, (2398), 18 states have internal predecessors, (2398), 0 states have call successors, (0), 0 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 21:06:41,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 162.0) internal successors, (3078), 19 states have internal predecessors, (3078), 0 states have call successors, (0), 0 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 21:06:41,636 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 162.0) internal successors, (3078), 19 states have internal predecessors, (3078), 0 states have call successors, (0), 0 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 21:06:41,636 INFO L175 Difference]: Start difference. First operand has 139 places, 131 transitions, 290 flow. Second operand 18 states and 2398 transitions. [2022-11-18 21:06:41,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 198 transitions, 644 flow [2022-11-18 21:06:41,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 198 transitions, 642 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 21:06:41,643 INFO L231 Difference]: Finished difference. Result has 156 places, 143 transitions, 394 flow [2022-11-18 21:06:41,644 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=394, PETRI_PLACES=156, PETRI_TRANSITIONS=143} [2022-11-18 21:06:41,645 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 18 predicate places. [2022-11-18 21:06:41,645 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 143 transitions, 394 flow [2022-11-18 21:06:41,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 130.66666666666666) internal successors, (1568), 12 states have internal predecessors, (1568), 0 states have call successors, (0), 0 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 21:06:41,647 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:06:41,647 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:06:41,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 21:06:41,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:06:41,853 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-18 21:06:41,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:41,854 INFO L85 PathProgramCache]: Analyzing trace with hash -855957026, now seen corresponding path program 1 times [2022-11-18 21:06:41,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:06:41,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024715926] [2022-11-18 21:06:41,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:41,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:06:41,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:42,013 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:06:42,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:06:42,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024715926] [2022-11-18 21:06:42,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024715926] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:06:42,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76343501] [2022-11-18 21:06:42,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:42,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:06:42,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:06:42,016 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:06:42,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 21:06:42,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:42,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:06:42,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:06:42,251 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:06:42,252 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:06:42,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76343501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:06:42,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:06:42,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 21:06:42,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684539652] [2022-11-18 21:06:42,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:06:42,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:06:42,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:06:42,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:06:42,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:06:42,257 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 162 [2022-11-18 21:06:42,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 143 transitions, 394 flow. Second operand has 6 states, 6 states have (on average 130.33333333333334) internal successors, (782), 6 states have internal predecessors, (782), 0 states have call successors, (0), 0 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 21:06:42,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:06:42,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 162 [2022-11-18 21:06:42,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:06:42,606 INFO L130 PetriNetUnfolder]: 141/821 cut-off events. [2022-11-18 21:06:42,606 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-11-18 21:06:42,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1218 conditions, 821 events. 141/821 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4380 event pairs, 70 based on Foata normal form. 4/605 useless extension candidates. Maximal degree in co-relation 960. Up to 212 conditions per place. [2022-11-18 21:06:42,617 INFO L137 encePairwiseOnDemand]: 157/162 looper letters, 35 selfloop transitions, 11 changer transitions 0/153 dead transitions. [2022-11-18 21:06:42,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 153 transitions, 493 flow [2022-11-18 21:06:42,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:06:42,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 21:06:42,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 934 transitions. [2022-11-18 21:06:42,622 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8236331569664903 [2022-11-18 21:06:42,622 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 934 transitions. [2022-11-18 21:06:42,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 934 transitions. [2022-11-18 21:06:42,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:06:42,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 934 transitions. [2022-11-18 21:06:42,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 133.42857142857142) internal successors, (934), 7 states have internal predecessors, (934), 0 states have call successors, (0), 0 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 21:06:42,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 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 21:06:42,664 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 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 21:06:42,665 INFO L175 Difference]: Start difference. First operand has 156 places, 143 transitions, 394 flow. Second operand 7 states and 934 transitions. [2022-11-18 21:06:42,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 153 transitions, 493 flow [2022-11-18 21:06:42,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 153 transitions, 461 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-18 21:06:42,677 INFO L231 Difference]: Finished difference. Result has 152 places, 139 transitions, 357 flow [2022-11-18 21:06:42,677 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=357, PETRI_PLACES=152, PETRI_TRANSITIONS=139} [2022-11-18 21:06:42,680 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 14 predicate places. [2022-11-18 21:06:42,681 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 139 transitions, 357 flow [2022-11-18 21:06:42,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 130.33333333333334) internal successors, (782), 6 states have internal predecessors, (782), 0 states have call successors, (0), 0 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 21:06:42,682 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:06:42,682 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] [2022-11-18 21:06:42,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 21:06:42,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:06:42,895 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-18 21:06:42,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:42,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1864197742, now seen corresponding path program 1 times [2022-11-18 21:06:42,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:06:42,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886401799] [2022-11-18 21:06:42,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:42,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:06:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:43,181 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 21:06:43,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:06:43,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886401799] [2022-11-18 21:06:43,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886401799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:06:43,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:06:43,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:06:43,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127826637] [2022-11-18 21:06:43,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:06:43,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:06:43,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:06:43,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:06:43,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:06:43,186 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 162 [2022-11-18 21:06:43,188 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 139 transitions, 357 flow. Second operand has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 0 states have call successors, (0), 0 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 21:06:43,188 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:06:43,188 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 162 [2022-11-18 21:06:43,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:06:43,500 INFO L130 PetriNetUnfolder]: 113/708 cut-off events. [2022-11-18 21:06:43,501 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2022-11-18 21:06:43,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1036 conditions, 708 events. 113/708 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3514 event pairs, 56 based on Foata normal form. 5/535 useless extension candidates. Maximal degree in co-relation 900. Up to 221 conditions per place. [2022-11-18 21:06:43,509 INFO L137 encePairwiseOnDemand]: 149/162 looper letters, 27 selfloop transitions, 6 changer transitions 3/144 dead transitions. [2022-11-18 21:06:43,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 144 transitions, 442 flow [2022-11-18 21:06:43,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:06:43,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 21:06:43,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 918 transitions. [2022-11-18 21:06:43,513 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8095238095238095 [2022-11-18 21:06:43,513 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 918 transitions. [2022-11-18 21:06:43,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 918 transitions. [2022-11-18 21:06:43,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:06:43,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 918 transitions. [2022-11-18 21:06:43,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 131.14285714285714) internal successors, (918), 7 states have internal predecessors, (918), 0 states have call successors, (0), 0 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 21:06:43,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 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 21:06:43,541 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 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 21:06:43,542 INFO L175 Difference]: Start difference. First operand has 152 places, 139 transitions, 357 flow. Second operand 7 states and 918 transitions. [2022-11-18 21:06:43,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 144 transitions, 442 flow [2022-11-18 21:06:43,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 144 transitions, 428 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 21:06:43,551 INFO L231 Difference]: Finished difference. Result has 155 places, 139 transitions, 371 flow [2022-11-18 21:06:43,551 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=371, PETRI_PLACES=155, PETRI_TRANSITIONS=139} [2022-11-18 21:06:43,554 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 17 predicate places. [2022-11-18 21:06:43,554 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 139 transitions, 371 flow [2022-11-18 21:06:43,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 0 states have call successors, (0), 0 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 21:06:43,555 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:06:43,555 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] [2022-11-18 21:06:43,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 21:06:43,556 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-18 21:06:43,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:43,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1321418696, now seen corresponding path program 1 times [2022-11-18 21:06:43,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:06:43,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013481513] [2022-11-18 21:06:43,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:43,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:06:43,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:43,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:06:43,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:06:43,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013481513] [2022-11-18 21:06:43,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013481513] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:06:43,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061016610] [2022-11-18 21:06:43,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:43,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:06:43,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:06:43,911 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:06:43,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 21:06:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:44,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:06:44,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:06:44,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:06:44,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:06:44,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061016610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:06:44,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:06:44,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-18 21:06:44,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256419216] [2022-11-18 21:06:44,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:06:44,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:06:44,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:06:44,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:06:44,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 21:06:44,179 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 162 [2022-11-18 21:06:44,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 139 transitions, 371 flow. Second operand has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 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 21:06:44,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:06:44,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 162 [2022-11-18 21:06:44,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:06:44,323 INFO L130 PetriNetUnfolder]: 45/501 cut-off events. [2022-11-18 21:06:44,323 INFO L131 PetriNetUnfolder]: For 79/103 co-relation queries the response was YES. [2022-11-18 21:06:44,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 501 events. 45/501 cut-off events. For 79/103 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2154 event pairs, 20 based on Foata normal form. 0/437 useless extension candidates. Maximal degree in co-relation 633. Up to 84 conditions per place. [2022-11-18 21:06:44,328 INFO L137 encePairwiseOnDemand]: 156/162 looper letters, 9 selfloop transitions, 3 changer transitions 0/136 dead transitions. [2022-11-18 21:06:44,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 136 transitions, 383 flow [2022-11-18 21:06:44,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:06:44,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 21:06:44,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 551 transitions. [2022-11-18 21:06:44,331 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8503086419753086 [2022-11-18 21:06:44,331 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 551 transitions. [2022-11-18 21:06:44,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 551 transitions. [2022-11-18 21:06:44,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:06:44,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 551 transitions. [2022-11-18 21:06:44,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.75) internal successors, (551), 4 states have internal predecessors, (551), 0 states have call successors, (0), 0 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 21:06:44,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 21:06:44,336 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 21:06:44,337 INFO L175 Difference]: Start difference. First operand has 155 places, 139 transitions, 371 flow. Second operand 4 states and 551 transitions. [2022-11-18 21:06:44,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 136 transitions, 383 flow [2022-11-18 21:06:44,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 136 transitions, 371 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 21:06:44,342 INFO L231 Difference]: Finished difference. Result has 149 places, 136 transitions, 353 flow [2022-11-18 21:06:44,342 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=353, PETRI_PLACES=149, PETRI_TRANSITIONS=136} [2022-11-18 21:06:44,343 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 11 predicate places. [2022-11-18 21:06:44,343 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 136 transitions, 353 flow [2022-11-18 21:06:44,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 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 21:06:44,344 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:06:44,344 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] [2022-11-18 21:06:44,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 21:06:44,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:06:44,550 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-18 21:06:44,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:44,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1287456467, now seen corresponding path program 1 times [2022-11-18 21:06:44,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:06:44,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773871070] [2022-11-18 21:06:44,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:44,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:06:44,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:44,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:06:44,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:06:44,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773871070] [2022-11-18 21:06:44,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773871070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:06:44,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:06:44,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:06:44,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213920555] [2022-11-18 21:06:44,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:06:44,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:06:44,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:06:44,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:06:44,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:06:44,703 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 162 [2022-11-18 21:06:44,704 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 136 transitions, 353 flow. Second operand has 4 states, 4 states have (on average 131.5) internal successors, (526), 4 states have internal predecessors, (526), 0 states have call successors, (0), 0 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 21:06:44,705 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:06:44,705 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 162 [2022-11-18 21:06:44,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:06:44,984 INFO L130 PetriNetUnfolder]: 237/977 cut-off events. [2022-11-18 21:06:44,985 INFO L131 PetriNetUnfolder]: For 166/286 co-relation queries the response was YES. [2022-11-18 21:06:44,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1885 conditions, 977 events. 237/977 cut-off events. For 166/286 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 6082 event pairs, 80 based on Foata normal form. 0/825 useless extension candidates. Maximal degree in co-relation 1841. Up to 305 conditions per place. [2022-11-18 21:06:44,995 INFO L137 encePairwiseOnDemand]: 156/162 looper letters, 28 selfloop transitions, 4 changer transitions 0/152 dead transitions. [2022-11-18 21:06:44,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 152 transitions, 466 flow [2022-11-18 21:06:44,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:06:44,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:06:44,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 684 transitions. [2022-11-18 21:06:44,998 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8444444444444444 [2022-11-18 21:06:44,999 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 684 transitions. [2022-11-18 21:06:44,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 684 transitions. [2022-11-18 21:06:45,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:06:45,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 684 transitions. [2022-11-18 21:06:45,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.8) internal successors, (684), 5 states have internal predecessors, (684), 0 states have call successors, (0), 0 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 21:06:45,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 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 21:06:45,005 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 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 21:06:45,005 INFO L175 Difference]: Start difference. First operand has 149 places, 136 transitions, 353 flow. Second operand 5 states and 684 transitions. [2022-11-18 21:06:45,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 152 transitions, 466 flow [2022-11-18 21:06:45,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 152 transitions, 460 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 21:06:45,010 INFO L231 Difference]: Finished difference. Result has 153 places, 139 transitions, 377 flow [2022-11-18 21:06:45,011 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=377, PETRI_PLACES=153, PETRI_TRANSITIONS=139} [2022-11-18 21:06:45,012 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 15 predicate places. [2022-11-18 21:06:45,012 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 139 transitions, 377 flow [2022-11-18 21:06:45,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.5) internal successors, (526), 4 states have internal predecessors, (526), 0 states have call successors, (0), 0 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 21:06:45,013 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:06:45,013 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] [2022-11-18 21:06:45,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 21:06:45,013 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-18 21:06:45,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:45,014 INFO L85 PathProgramCache]: Analyzing trace with hash 71763343, now seen corresponding path program 1 times [2022-11-18 21:06:45,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:06:45,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104463397] [2022-11-18 21:06:45,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:45,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:06:45,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:45,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:06:45,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:06:45,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104463397] [2022-11-18 21:06:45,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104463397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:06:45,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:06:45,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:06:45,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878227064] [2022-11-18 21:06:45,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:06:45,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:06:45,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:06:45,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:06:45,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:06:45,216 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 162 [2022-11-18 21:06:45,216 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 139 transitions, 377 flow. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 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 21:06:45,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:06:45,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 162 [2022-11-18 21:06:45,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:06:45,367 INFO L130 PetriNetUnfolder]: 65/801 cut-off events. [2022-11-18 21:06:45,368 INFO L131 PetriNetUnfolder]: For 138/178 co-relation queries the response was YES. [2022-11-18 21:06:45,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1209 conditions, 801 events. 65/801 cut-off events. For 138/178 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4656 event pairs, 16 based on Foata normal form. 4/705 useless extension candidates. Maximal degree in co-relation 1116. Up to 124 conditions per place. [2022-11-18 21:06:45,373 INFO L137 encePairwiseOnDemand]: 158/162 looper letters, 10 selfloop transitions, 3 changer transitions 0/142 dead transitions. [2022-11-18 21:06:45,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 142 transitions, 415 flow [2022-11-18 21:06:45,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:06:45,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 21:06:45,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 422 transitions. [2022-11-18 21:06:45,376 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8683127572016461 [2022-11-18 21:06:45,376 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 422 transitions. [2022-11-18 21:06:45,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 422 transitions. [2022-11-18 21:06:45,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:06:45,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 422 transitions. [2022-11-18 21:06:45,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 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 21:06:45,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 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 21:06:45,380 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 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 21:06:45,380 INFO L175 Difference]: Start difference. First operand has 153 places, 139 transitions, 377 flow. Second operand 3 states and 422 transitions. [2022-11-18 21:06:45,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 142 transitions, 415 flow [2022-11-18 21:06:45,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 142 transitions, 413 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 21:06:45,385 INFO L231 Difference]: Finished difference. Result has 155 places, 141 transitions, 398 flow [2022-11-18 21:06:45,386 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=398, PETRI_PLACES=155, PETRI_TRANSITIONS=141} [2022-11-18 21:06:45,386 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 17 predicate places. [2022-11-18 21:06:45,387 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 141 transitions, 398 flow [2022-11-18 21:06:45,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 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 21:06:45,387 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:06:45,388 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] [2022-11-18 21:06:45,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 21:06:45,388 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-18 21:06:45,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:45,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1699118205, now seen corresponding path program 1 times [2022-11-18 21:06:45,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:06:45,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716618057] [2022-11-18 21:06:45,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:45,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:06:45,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:47,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:06:47,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:06:47,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716618057] [2022-11-18 21:06:47,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716618057] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:06:47,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116673070] [2022-11-18 21:06:47,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:47,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:06:47,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:06:47,266 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:06:47,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 21:06:47,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:47,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-18 21:06:47,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:06:48,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 21:06:49,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:06:49,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-18 21:06:49,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:06:49,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-18 21:06:49,996 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-18 21:06:49,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-11-18 21:06:50,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:06:50,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:06:51,776 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:06:51,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-18 21:06:51,795 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:06:51,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 146 [2022-11-18 21:06:51,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 118 [2022-11-18 21:06:51,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 94 [2022-11-18 21:06:53,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:06:53,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116673070] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:06:53,907 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:06:53,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 63 [2022-11-18 21:06:53,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669714719] [2022-11-18 21:06:53,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:06:53,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-18 21:06:53,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:06:53,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-18 21:06:53,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=3767, Unknown=5, NotChecked=0, Total=4032 [2022-11-18 21:06:53,918 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 162 [2022-11-18 21:06:53,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 141 transitions, 398 flow. Second operand has 64 states, 64 states have (on average 80.953125) internal successors, (5181), 64 states have internal predecessors, (5181), 0 states have call successors, (0), 0 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 21:06:53,926 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:06:53,926 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 162 [2022-11-18 21:06:53,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:06:58,338 INFO L130 PetriNetUnfolder]: 719/2409 cut-off events. [2022-11-18 21:06:58,339 INFO L131 PetriNetUnfolder]: For 1139/1331 co-relation queries the response was YES. [2022-11-18 21:06:58,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4976 conditions, 2409 events. 719/2409 cut-off events. For 1139/1331 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 18992 event pairs, 384 based on Foata normal form. 0/2082 useless extension candidates. Maximal degree in co-relation 4849. Up to 1190 conditions per place. [2022-11-18 21:06:58,360 INFO L137 encePairwiseOnDemand]: 128/162 looper letters, 76 selfloop transitions, 51 changer transitions 0/193 dead transitions. [2022-11-18 21:06:58,360 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 193 transitions, 816 flow [2022-11-18 21:06:58,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 21:06:58,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-18 21:06:58,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2566 transitions. [2022-11-18 21:06:58,369 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5109518120270808 [2022-11-18 21:06:58,370 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2566 transitions. [2022-11-18 21:06:58,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2566 transitions. [2022-11-18 21:06:58,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:06:58,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2566 transitions. [2022-11-18 21:06:58,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 82.7741935483871) internal successors, (2566), 31 states have internal predecessors, (2566), 0 states have call successors, (0), 0 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 21:06:58,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 162.0) internal successors, (5184), 32 states have internal predecessors, (5184), 0 states have call successors, (0), 0 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 21:06:58,394 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 162.0) internal successors, (5184), 32 states have internal predecessors, (5184), 0 states have call successors, (0), 0 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 21:06:58,394 INFO L175 Difference]: Start difference. First operand has 155 places, 141 transitions, 398 flow. Second operand 31 states and 2566 transitions. [2022-11-18 21:06:58,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 193 transitions, 816 flow [2022-11-18 21:06:58,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 193 transitions, 775 flow, removed 16 selfloop flow, removed 2 redundant places. [2022-11-18 21:06:58,405 INFO L231 Difference]: Finished difference. Result has 196 places, 178 transitions, 694 flow [2022-11-18 21:06:58,405 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=694, PETRI_PLACES=196, PETRI_TRANSITIONS=178} [2022-11-18 21:06:58,410 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 58 predicate places. [2022-11-18 21:06:58,410 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 178 transitions, 694 flow [2022-11-18 21:06:58,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 80.953125) internal successors, (5181), 64 states have internal predecessors, (5181), 0 states have call successors, (0), 0 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 21:06:58,413 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:06:58,413 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] [2022-11-18 21:06:58,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-18 21:06:58,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:06:58,620 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-18 21:06:58,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:58,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1376533217, now seen corresponding path program 2 times [2022-11-18 21:06:58,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:06:58,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168196745] [2022-11-18 21:06:58,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:58,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:06:58,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:00,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:07:00,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:07:00,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168196745] [2022-11-18 21:07:00,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168196745] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:07:00,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98369938] [2022-11-18 21:07:00,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:07:00,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:07:00,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:07:00,126 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:07:00,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 21:07:00,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 21:07:00,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:07:00,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 21:07:00,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:07:00,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:07:00,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-18 21:07:01,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-18 21:07:01,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:07:01,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:07:01,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98369938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:07:01,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:07:01,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [18] total 29 [2022-11-18 21:07:01,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121061931] [2022-11-18 21:07:01,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:07:01,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 21:07:01,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:07:01,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 21:07:01,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=797, Unknown=0, NotChecked=0, Total=870 [2022-11-18 21:07:01,077 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 162 [2022-11-18 21:07:01,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 178 transitions, 694 flow. Second operand has 13 states, 13 states have (on average 104.38461538461539) internal successors, (1357), 13 states have internal predecessors, (1357), 0 states have call successors, (0), 0 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 21:07:01,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:07:01,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 162 [2022-11-18 21:07:01,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:07:02,337 INFO L130 PetriNetUnfolder]: 835/2533 cut-off events. [2022-11-18 21:07:02,338 INFO L131 PetriNetUnfolder]: For 1764/1788 co-relation queries the response was YES. [2022-11-18 21:07:02,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6363 conditions, 2533 events. 835/2533 cut-off events. For 1764/1788 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 20399 event pairs, 350 based on Foata normal form. 22/2429 useless extension candidates. Maximal degree in co-relation 6221. Up to 1250 conditions per place. [2022-11-18 21:07:02,362 INFO L137 encePairwiseOnDemand]: 148/162 looper letters, 78 selfloop transitions, 28 changer transitions 1/209 dead transitions. [2022-11-18 21:07:02,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 209 transitions, 1036 flow [2022-11-18 21:07:02,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 21:07:02,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 21:07:02,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1499 transitions. [2022-11-18 21:07:02,368 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6609347442680776 [2022-11-18 21:07:02,368 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1499 transitions. [2022-11-18 21:07:02,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1499 transitions. [2022-11-18 21:07:02,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:07:02,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1499 transitions. [2022-11-18 21:07:02,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 107.07142857142857) internal successors, (1499), 14 states have internal predecessors, (1499), 0 states have call successors, (0), 0 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 21:07:02,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 162.0) internal successors, (2430), 15 states have internal predecessors, (2430), 0 states have call successors, (0), 0 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 21:07:02,390 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 162.0) internal successors, (2430), 15 states have internal predecessors, (2430), 0 states have call successors, (0), 0 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 21:07:02,391 INFO L175 Difference]: Start difference. First operand has 196 places, 178 transitions, 694 flow. Second operand 14 states and 1499 transitions. [2022-11-18 21:07:02,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 209 transitions, 1036 flow [2022-11-18 21:07:02,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 209 transitions, 1000 flow, removed 6 selfloop flow, removed 12 redundant places. [2022-11-18 21:07:02,410 INFO L231 Difference]: Finished difference. Result has 199 places, 182 transitions, 756 flow [2022-11-18 21:07:02,411 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=756, PETRI_PLACES=199, PETRI_TRANSITIONS=182} [2022-11-18 21:07:02,412 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 61 predicate places. [2022-11-18 21:07:02,413 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 182 transitions, 756 flow [2022-11-18 21:07:02,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 104.38461538461539) internal successors, (1357), 13 states have internal predecessors, (1357), 0 states have call successors, (0), 0 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 21:07:02,414 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:07:02,414 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] [2022-11-18 21:07:02,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 21:07:02,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:07:02,630 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-18 21:07:02,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:07:02,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1019091045, now seen corresponding path program 3 times [2022-11-18 21:07:02,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:07:02,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326324305] [2022-11-18 21:07:02,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:07:02,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:07:02,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:03,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:07:03,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:07:03,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326324305] [2022-11-18 21:07:03,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326324305] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:07:03,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135578441] [2022-11-18 21:07:03,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 21:07:03,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:07:03,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:07:03,905 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:07:03,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 21:07:04,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 21:07:04,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:07:04,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 21:07:04,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:07:04,464 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-18 21:07:04,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-11-18 21:07:04,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:07:04,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:07:04,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135578441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:07:04,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:07:04,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2022-11-18 21:07:04,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115816877] [2022-11-18 21:07:04,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:07:04,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:07:04,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:07:04,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:07:04,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-11-18 21:07:04,500 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 162 [2022-11-18 21:07:04,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 182 transitions, 756 flow. Second operand has 6 states, 6 states have (on average 119.16666666666667) internal successors, (715), 6 states have internal predecessors, (715), 0 states have call successors, (0), 0 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 21:07:04,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:07:04,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 162 [2022-11-18 21:07:04,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:07:05,309 INFO L130 PetriNetUnfolder]: 943/2853 cut-off events. [2022-11-18 21:07:05,309 INFO L131 PetriNetUnfolder]: For 2676/2700 co-relation queries the response was YES. [2022-11-18 21:07:05,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7399 conditions, 2853 events. 943/2853 cut-off events. For 2676/2700 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 23733 event pairs, 581 based on Foata normal form. 19/2697 useless extension candidates. Maximal degree in co-relation 7270. Up to 1633 conditions per place. [2022-11-18 21:07:05,335 INFO L137 encePairwiseOnDemand]: 156/162 looper letters, 73 selfloop transitions, 16 changer transitions 1/206 dead transitions. [2022-11-18 21:07:05,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 206 transitions, 1045 flow [2022-11-18 21:07:05,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:07:05,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 21:07:05,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 750 transitions. [2022-11-18 21:07:05,338 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7716049382716049 [2022-11-18 21:07:05,339 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 750 transitions. [2022-11-18 21:07:05,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 750 transitions. [2022-11-18 21:07:05,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:07:05,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 750 transitions. [2022-11-18 21:07:05,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 125.0) internal successors, (750), 6 states have internal predecessors, (750), 0 states have call successors, (0), 0 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 21:07:05,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 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 21:07:05,363 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 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 21:07:05,364 INFO L175 Difference]: Start difference. First operand has 199 places, 182 transitions, 756 flow. Second operand 6 states and 750 transitions. [2022-11-18 21:07:05,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 206 transitions, 1045 flow [2022-11-18 21:07:05,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 206 transitions, 1000 flow, removed 5 selfloop flow, removed 10 redundant places. [2022-11-18 21:07:05,379 INFO L231 Difference]: Finished difference. Result has 196 places, 186 transitions, 794 flow [2022-11-18 21:07:05,381 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=794, PETRI_PLACES=196, PETRI_TRANSITIONS=186} [2022-11-18 21:07:05,382 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 58 predicate places. [2022-11-18 21:07:05,382 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 186 transitions, 794 flow [2022-11-18 21:07:05,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.16666666666667) internal successors, (715), 6 states have internal predecessors, (715), 0 states have call successors, (0), 0 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 21:07:05,383 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:07:05,384 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] [2022-11-18 21:07:05,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 21:07:05,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 21:07:05,591 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-18 21:07:05,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:07:05,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1470378367, now seen corresponding path program 1 times [2022-11-18 21:07:05,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:07:05,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193753797] [2022-11-18 21:07:05,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:07:05,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:07:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:07,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:07:07,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:07:07,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193753797] [2022-11-18 21:07:07,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193753797] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:07:07,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736027354] [2022-11-18 21:07:07,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:07:07,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:07:07,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:07:07,577 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:07:07,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 21:07:07,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:07,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-18 21:07:07,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:07:08,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 21:07:09,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:07:09,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-18 21:07:10,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:07:10,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-18 21:07:10,478 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-18 21:07:10,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-11-18 21:07:10,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:07:10,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:07:12,120 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:07:12,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-18 21:07:12,134 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:07:12,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 76 [2022-11-18 21:07:12,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-18 21:07:12,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 42 [2022-11-18 21:07:14,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:07:14,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736027354] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:07:14,214 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:07:14,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 64 [2022-11-18 21:07:14,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916454907] [2022-11-18 21:07:14,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:07:14,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-11-18 21:07:14,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:07:14,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-11-18 21:07:14,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=3923, Unknown=11, NotChecked=0, Total=4160 [2022-11-18 21:07:14,223 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 162 [2022-11-18 21:07:14,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 186 transitions, 794 flow. Second operand has 65 states, 65 states have (on average 64.4) internal successors, (4186), 65 states have internal predecessors, (4186), 0 states have call successors, (0), 0 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 21:07:14,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:07:14,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 162 [2022-11-18 21:07:14,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:07:20,159 INFO L130 PetriNetUnfolder]: 1389/4498 cut-off events. [2022-11-18 21:07:20,159 INFO L131 PetriNetUnfolder]: For 4476/5178 co-relation queries the response was YES. [2022-11-18 21:07:20,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11444 conditions, 4498 events. 1389/4498 cut-off events. For 4476/5178 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 40273 event pairs, 280 based on Foata normal form. 95/4253 useless extension candidates. Maximal degree in co-relation 11285. Up to 1157 conditions per place. [2022-11-18 21:07:20,207 INFO L137 encePairwiseOnDemand]: 126/162 looper letters, 130 selfloop transitions, 80 changer transitions 0/266 dead transitions. [2022-11-18 21:07:20,207 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 266 transitions, 1604 flow [2022-11-18 21:07:20,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-18 21:07:20,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-18 21:07:20,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 2454 transitions. [2022-11-18 21:07:20,216 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4094094094094094 [2022-11-18 21:07:20,216 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 2454 transitions. [2022-11-18 21:07:20,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 2454 transitions. [2022-11-18 21:07:20,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:07:20,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 2454 transitions. [2022-11-18 21:07:20,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 66.32432432432432) internal successors, (2454), 37 states have internal predecessors, (2454), 0 states have call successors, (0), 0 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 21:07:20,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 162.0) internal successors, (6156), 38 states have internal predecessors, (6156), 0 states have call successors, (0), 0 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 21:07:20,239 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 162.0) internal successors, (6156), 38 states have internal predecessors, (6156), 0 states have call successors, (0), 0 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 21:07:20,240 INFO L175 Difference]: Start difference. First operand has 196 places, 186 transitions, 794 flow. Second operand 37 states and 2454 transitions. [2022-11-18 21:07:20,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 266 transitions, 1604 flow [2022-11-18 21:07:20,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 266 transitions, 1582 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-18 21:07:20,255 INFO L231 Difference]: Finished difference. Result has 236 places, 227 transitions, 1296 flow [2022-11-18 21:07:20,256 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1296, PETRI_PLACES=236, PETRI_TRANSITIONS=227} [2022-11-18 21:07:20,257 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 98 predicate places. [2022-11-18 21:07:20,257 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 227 transitions, 1296 flow [2022-11-18 21:07:20,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 64.4) internal successors, (4186), 65 states have internal predecessors, (4186), 0 states have call successors, (0), 0 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 21:07:20,259 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:07:20,259 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] [2022-11-18 21:07:20,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 21:07:20,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 21:07:20,471 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-18 21:07:20,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:07:20,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1906633759, now seen corresponding path program 2 times [2022-11-18 21:07:20,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:07:20,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515532654] [2022-11-18 21:07:20,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:07:20,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:07:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:21,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:07:21,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:07:21,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515532654] [2022-11-18 21:07:21,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515532654] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:07:21,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371403012] [2022-11-18 21:07:21,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:07:21,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:07:21,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:07:21,418 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:07:21,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 21:07:21,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 21:07:21,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:07:21,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 21:07:21,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:07:21,959 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-18 21:07:21,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-11-18 21:07:21,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:07:21,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:07:21,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371403012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:07:21,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:07:21,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2022-11-18 21:07:21,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556181582] [2022-11-18 21:07:21,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:07:21,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:07:21,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:07:21,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:07:21,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-11-18 21:07:21,991 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 162 [2022-11-18 21:07:22,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 227 transitions, 1296 flow. Second operand has 6 states, 6 states have (on average 119.16666666666667) internal successors, (715), 6 states have internal predecessors, (715), 0 states have call successors, (0), 0 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 21:07:22,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:07:22,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 162 [2022-11-18 21:07:22,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:07:23,663 INFO L130 PetriNetUnfolder]: 2046/5735 cut-off events. [2022-11-18 21:07:23,663 INFO L131 PetriNetUnfolder]: For 15673/19900 co-relation queries the response was YES. [2022-11-18 21:07:23,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18049 conditions, 5735 events. 2046/5735 cut-off events. For 15673/19900 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 51065 event pairs, 631 based on Foata normal form. 189/5329 useless extension candidates. Maximal degree in co-relation 17895. Up to 3021 conditions per place. [2022-11-18 21:07:23,740 INFO L137 encePairwiseOnDemand]: 152/162 looper letters, 123 selfloop transitions, 30 changer transitions 0/270 dead transitions. [2022-11-18 21:07:23,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 270 transitions, 1925 flow [2022-11-18 21:07:23,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:07:23,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 21:07:23,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 754 transitions. [2022-11-18 21:07:23,747 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7757201646090535 [2022-11-18 21:07:23,747 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 754 transitions. [2022-11-18 21:07:23,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 754 transitions. [2022-11-18 21:07:23,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:07:23,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 754 transitions. [2022-11-18 21:07:23,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 125.66666666666667) internal successors, (754), 6 states have internal predecessors, (754), 0 states have call successors, (0), 0 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 21:07:23,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 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 21:07:23,754 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 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 21:07:23,754 INFO L175 Difference]: Start difference. First operand has 236 places, 227 transitions, 1296 flow. Second operand 6 states and 754 transitions. [2022-11-18 21:07:23,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 270 transitions, 1925 flow [2022-11-18 21:07:23,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 270 transitions, 1742 flow, removed 65 selfloop flow, removed 24 redundant places. [2022-11-18 21:07:23,821 INFO L231 Difference]: Finished difference. Result has 220 places, 243 transitions, 1381 flow [2022-11-18 21:07:23,822 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1381, PETRI_PLACES=220, PETRI_TRANSITIONS=243} [2022-11-18 21:07:23,824 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 82 predicate places. [2022-11-18 21:07:23,824 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 243 transitions, 1381 flow [2022-11-18 21:07:23,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.16666666666667) internal successors, (715), 6 states have internal predecessors, (715), 0 states have call successors, (0), 0 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 21:07:23,825 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:07:23,825 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] [2022-11-18 21:07:23,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 21:07:24,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:07:24,033 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-18 21:07:24,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:07:24,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1731822461, now seen corresponding path program 3 times [2022-11-18 21:07:24,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:07:24,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465665721] [2022-11-18 21:07:24,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:07:24,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:07:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:25,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:07:25,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:07:25,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465665721] [2022-11-18 21:07:25,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465665721] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:07:25,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263495140] [2022-11-18 21:07:25,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 21:07:25,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:07:25,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:07:25,199 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:07:25,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 21:07:25,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 21:07:25,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:07:25,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 21:07:25,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:07:25,727 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-18 21:07:25,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-11-18 21:07:25,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:07:25,759 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:07:25,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263495140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:07:25,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:07:25,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2022-11-18 21:07:25,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053464821] [2022-11-18 21:07:25,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:07:25,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:07:25,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:07:25,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:07:25,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-11-18 21:07:25,763 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 162 [2022-11-18 21:07:25,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 243 transitions, 1381 flow. Second operand has 6 states, 6 states have (on average 119.16666666666667) internal successors, (715), 6 states have internal predecessors, (715), 0 states have call successors, (0), 0 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 21:07:25,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:07:25,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 162 [2022-11-18 21:07:25,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:07:27,356 INFO L130 PetriNetUnfolder]: 2422/6716 cut-off events. [2022-11-18 21:07:27,356 INFO L131 PetriNetUnfolder]: For 20216/25299 co-relation queries the response was YES. [2022-11-18 21:07:27,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22303 conditions, 6716 events. 2422/6716 cut-off events. For 20216/25299 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 61808 event pairs, 719 based on Foata normal form. 162/6167 useless extension candidates. Maximal degree in co-relation 22164. Up to 3697 conditions per place. [2022-11-18 21:07:27,426 INFO L137 encePairwiseOnDemand]: 154/162 looper letters, 139 selfloop transitions, 22 changer transitions 0/278 dead transitions. [2022-11-18 21:07:27,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 278 transitions, 1977 flow [2022-11-18 21:07:27,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:07:27,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 21:07:27,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 749 transitions. [2022-11-18 21:07:27,429 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7705761316872428 [2022-11-18 21:07:27,429 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 749 transitions. [2022-11-18 21:07:27,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 749 transitions. [2022-11-18 21:07:27,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:07:27,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 749 transitions. [2022-11-18 21:07:27,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 124.83333333333333) internal successors, (749), 6 states have internal predecessors, (749), 0 states have call successors, (0), 0 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 21:07:27,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 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 21:07:27,435 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 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 21:07:27,435 INFO L175 Difference]: Start difference. First operand has 220 places, 243 transitions, 1381 flow. Second operand 6 states and 749 transitions. [2022-11-18 21:07:27,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 278 transitions, 1977 flow [2022-11-18 21:07:27,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 278 transitions, 1918 flow, removed 24 selfloop flow, removed 1 redundant places. [2022-11-18 21:07:27,519 INFO L231 Difference]: Finished difference. Result has 226 places, 251 transitions, 1471 flow [2022-11-18 21:07:27,519 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=1328, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1471, PETRI_PLACES=226, PETRI_TRANSITIONS=251} [2022-11-18 21:07:27,520 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 88 predicate places. [2022-11-18 21:07:27,520 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 251 transitions, 1471 flow [2022-11-18 21:07:27,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.16666666666667) internal successors, (715), 6 states have internal predecessors, (715), 0 states have call successors, (0), 0 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 21:07:27,521 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:07:27,521 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] [2022-11-18 21:07:27,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 21:07:27,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 21:07:27,728 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-18 21:07:27,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:07:27,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1533026883, now seen corresponding path program 4 times [2022-11-18 21:07:27,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:07:27,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228841367] [2022-11-18 21:07:27,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:07:27,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:07:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:29,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:07:29,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:07:29,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228841367] [2022-11-18 21:07:29,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228841367] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:07:29,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61569376] [2022-11-18 21:07:29,035 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 21:07:29,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:07:29,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:07:29,039 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:07:29,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 21:07:29,208 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 21:07:29,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:07:29,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-18 21:07:29,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:07:29,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 21:07:31,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:07:31,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-18 21:07:31,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:07:31,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-18 21:07:31,632 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-18 21:07:31,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-11-18 21:07:31,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:07:31,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:07:32,835 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:07:32,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-18 21:07:32,851 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:07:32,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 146 [2022-11-18 21:07:32,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 53 [2022-11-18 21:07:32,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 94 [2022-11-18 21:07:34,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:07:34,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61569376] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:07:34,643 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:07:34,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 22, 22] total 58 [2022-11-18 21:07:34,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823647861] [2022-11-18 21:07:34,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:07:34,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-18 21:07:34,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:07:34,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-18 21:07:34,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=3169, Unknown=7, NotChecked=0, Total=3422 [2022-11-18 21:07:34,653 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 162 [2022-11-18 21:07:34,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 251 transitions, 1471 flow. Second operand has 59 states, 59 states have (on average 84.08474576271186) internal successors, (4961), 59 states have internal predecessors, (4961), 0 states have call successors, (0), 0 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 21:07:34,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:07:34,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 162 [2022-11-18 21:07:34,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:07:39,565 INFO L130 PetriNetUnfolder]: 2489/7340 cut-off events. [2022-11-18 21:07:39,566 INFO L131 PetriNetUnfolder]: For 21621/26012 co-relation queries the response was YES. [2022-11-18 21:07:39,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23989 conditions, 7340 events. 2489/7340 cut-off events. For 21621/26012 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 69915 event pairs, 303 based on Foata normal form. 923/7644 useless extension candidates. Maximal degree in co-relation 23823. Up to 2262 conditions per place. [2022-11-18 21:07:39,642 INFO L137 encePairwiseOnDemand]: 128/162 looper letters, 143 selfloop transitions, 108 changer transitions 0/320 dead transitions. [2022-11-18 21:07:39,643 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 320 transitions, 2492 flow [2022-11-18 21:07:39,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 21:07:39,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 21:07:39,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 2931 transitions. [2022-11-18 21:07:39,649 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5321350762527233 [2022-11-18 21:07:39,650 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 2931 transitions. [2022-11-18 21:07:39,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 2931 transitions. [2022-11-18 21:07:39,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:07:39,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 2931 transitions. [2022-11-18 21:07:39,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 86.20588235294117) internal successors, (2931), 34 states have internal predecessors, (2931), 0 states have call successors, (0), 0 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 21:07:39,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 162.0) internal successors, (5670), 35 states have internal predecessors, (5670), 0 states have call successors, (0), 0 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 21:07:39,670 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 162.0) internal successors, (5670), 35 states have internal predecessors, (5670), 0 states have call successors, (0), 0 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 21:07:39,671 INFO L175 Difference]: Start difference. First operand has 226 places, 251 transitions, 1471 flow. Second operand 34 states and 2931 transitions. [2022-11-18 21:07:39,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 320 transitions, 2492 flow [2022-11-18 21:07:39,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 320 transitions, 2442 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-11-18 21:07:39,794 INFO L231 Difference]: Finished difference. Result has 261 places, 285 transitions, 2092 flow [2022-11-18 21:07:39,795 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=1425, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2092, PETRI_PLACES=261, PETRI_TRANSITIONS=285} [2022-11-18 21:07:39,795 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 123 predicate places. [2022-11-18 21:07:39,795 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 285 transitions, 2092 flow [2022-11-18 21:07:39,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 84.08474576271186) internal successors, (4961), 59 states have internal predecessors, (4961), 0 states have call successors, (0), 0 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 21:07:39,797 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:07:39,798 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] [2022-11-18 21:07:39,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 21:07:40,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 21:07:40,005 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-18 21:07:40,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:07:40,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1391761032, now seen corresponding path program 1 times [2022-11-18 21:07:40,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:07:40,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947131518] [2022-11-18 21:07:40,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:07:40,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:07:40,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:40,104 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:07:40,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:07:40,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947131518] [2022-11-18 21:07:40,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947131518] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:07:40,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109350315] [2022-11-18 21:07:40,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:07:40,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:07:40,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:07:40,107 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:07:40,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 21:07:40,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:40,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 21:07:40,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:07:40,494 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:07:40,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:07:40,804 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:07:40,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109350315] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:07:40,804 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:07:40,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2022-11-18 21:07:40,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330055365] [2022-11-18 21:07:40,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:07:40,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 21:07:40,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:07:40,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 21:07:40,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2022-11-18 21:07:40,809 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 162 [2022-11-18 21:07:40,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 285 transitions, 2092 flow. Second operand has 19 states, 19 states have (on average 113.36842105263158) internal successors, (2154), 19 states have internal predecessors, (2154), 0 states have call successors, (0), 0 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 21:07:40,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:07:40,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 162 [2022-11-18 21:07:40,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:07:41,865 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([543] L71-->L75: Formula: (and (= |v_thread2Thread1of1ForFork0_~j~0#1_7| (select (select |v_#memory_int_56| v_~q~0.base_48) (+ (* v_~q_front~0_35 4) v_~q~0.offset_48))) (= (+ v_~q_front~0_35 1) v_~q_front~0_34) (= |v_thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1_5| |v_thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1_5|) (= (ite (and (< v_~q_front~0_35 v_~n~0_45) (< v_~q_front~0_35 v_~q_back~0_82) (<= 0 v_~q_front~0_35)) 1 0) |v_thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1_5|) (<= v_~q_front~0_34 2147483647) (not (= |v_thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1_5| 0)) (<= 0 (+ v_~q_front~0_34 2147483648))) InVars {~q_back~0=v_~q_back~0_82, #memory_int=|v_#memory_int_56|, ~q~0.base=v_~q~0.base_48, ~n~0=v_~n~0_45, ~q~0.offset=v_~q~0.offset_48, ~q_front~0=v_~q_front~0_35} OutVars{thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1=|v_thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1_5|, thread2Thread1of1ForFork0_~j~0#1=|v_thread2Thread1of1ForFork0_~j~0#1_7|, ~q_back~0=v_~q_back~0_82, thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1=|v_thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1_5|, #memory_int=|v_#memory_int_56|, thread2Thread1of1ForFork0_#t~mem6#1=|v_thread2Thread1of1ForFork0_#t~mem6#1_5|, thread2Thread1of1ForFork0_#t~post7#1=|v_thread2Thread1of1ForFork0_#t~post7#1_5|, ~q~0.base=v_~q~0.base_48, ~n~0=v_~n~0_45, ~q~0.offset=v_~q~0.offset_48, ~q_front~0=v_~q_front~0_34} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1, thread2Thread1of1ForFork0_~j~0#1, thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1, thread2Thread1of1ForFork0_#t~mem6#1, thread2Thread1of1ForFork0_#t~post7#1, ~q_front~0][255], [Black: 3465#(and (<= ~s~0 0) (exists ((v_~q_back~0_102 Int)) (and (<= ~q_front~0 v_~q_back~0_102) (= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* v_~q_back~0_102 4))) 1) (<= v_~q_back~0_102 ~q_front~0)))), Black: 3472#(and (<= ~s~0 0) (<= |thread2Thread1of1ForFork0_~j~0#1| 1)), Black: 3458#(exists ((v_~q_back~0_102 Int)) (and (<= ~q_front~0 v_~q_back~0_102) (= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* v_~q_back~0_102 4))) 1) (<= v_~q_back~0_102 ~q_front~0))), thread2Thread1of1ForFork0InUse, 632#(<= 1 |ULTIMATE.start_create_fresh_int_array_~i~1#1|), Black: 1810#(and (<= (+ |ULTIMATE.start_create_fresh_int_array_#res#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (<= (+ ~n~0 ~q_front~0) (+ ~q_back~0 1)) (<= (+ |ULTIMATE.start_create_fresh_int_array_#res#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_#res#1.base|) 0) 2147483647) (= ~q_front~0 ~q_back~0) (= 0 |ULTIMATE.start_create_fresh_int_array_#res#1.offset|)), Black: 1793#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 0) (<= (+ ~n~0 ~q_front~0) (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~q_back~0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= ~q_front~0 ~q_back~0)), Black: 1808#(and (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| Int)) (and (<= ~n~0 (+ |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 1)) (<= |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 0) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 4) |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483647))) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) 0) 2147483647) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= ~q_front~0 ~q_back~0)), Black: 1821#(and (or (= (+ ~q~0.offset (* ~q_front~0 4)) 0) (= ~q~0.offset 0)) (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| Int)) (and (<= ~n~0 (+ |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 1)) (<= |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 0) (<= (select (select |#memory_int| ~q~0.base) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 4) ~q~0.offset)) 2147483647))) (or (<= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* ~q_front~0 4))) 2147483647) (not (= (+ ~q~0.offset (* ~q_front~0 4)) 0))) (= ~q_front~0 ~q_back~0)), Black: 1814#(and (<= (+ 2 ~q~0.base) |ULTIMATE.start_main_~#t2~0#1.base|) (<= (+ 2 ~q~0.base) |ULTIMATE.start_main_~#t1~0#1.base|) (or (= (+ ~q~0.offset (* ~q_front~0 4)) 0) (= ~q~0.offset 0)) (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| Int)) (and (<= ~n~0 (+ |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 1)) (<= |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 0) (<= (select (select |#memory_int| ~q~0.base) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 4) ~q~0.offset)) 2147483647))) (or (<= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* ~q_front~0 4))) 2147483647) (not (= (+ ~q~0.offset (* ~q_front~0 4)) 0))) (= ~q_front~0 ~q_back~0)), Black: 1476#(<= (+ |thread2Thread1of1ForFork0_~j~0#1| ~s~0) 2147483647), Black: 1806#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| Int)) (and (<= |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 0) (<= |ULTIMATE.start_create_fresh_int_array_~i~1#1| (+ |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 1)) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 4) |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483647))) (<= (+ ~n~0 ~q_front~0) (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~q_back~0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) 0) 2147483647) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= ~q_front~0 ~q_back~0)), Black: 166#(and (= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 0) (= |ULTIMATE.start_create_fresh_int_array_#t~post20#1| 0)), Black: 1798#(and (<= |ULTIMATE.start_create_fresh_int_array_#t~nondet21#1| 2147483647) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 0) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* |ULTIMATE.start_create_fresh_int_array_~i~1#1| 4) |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483647) (<= (+ ~n~0 ~q_front~0) (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~q_back~0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= ~q_front~0 ~q_back~0)), 117#L49-8true, Black: 1796#(and (<= |ULTIMATE.start_create_fresh_int_array_#t~nondet21#1| 2147483647) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 0) (<= (+ ~n~0 ~q_front~0) (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~q_back~0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= ~q_front~0 ~q_back~0)), Black: 2176#(and (<= ~q_back~0 ~q_front~0) (<= ~q_front~0 ~q_back~0)), Black: 1819#(and (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| Int)) (and (<= |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 0) (<= ~q_front~0 |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10|) (<= (select (select |#memory_int| ~q~0.base) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 4) ~q~0.offset)) 2147483647))) (= (+ ~q~0.offset (* ~q_front~0 4)) 0) (<= 0 ~q_front~0)), 1148#true, Black: 2475#(and (<= ~s~0 0) (<= |thread2Thread1of1ForFork0_~j~0#1| 0)), Black: 1812#(and (<= (+ |ULTIMATE.start_create_fresh_int_array_#res#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_#res#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| Int)) (and (<= (select (select |#memory_int| |ULTIMATE.start_main_#t~ret12#1.base|) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 4) |ULTIMATE.start_main_#t~ret12#1.offset|)) 2147483647) (<= ~n~0 (+ |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 1)) (<= |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 0))) (<= (+ 2 |ULTIMATE.start_main_#t~ret12#1.base|) |ULTIMATE.start_main_~#t1~0#1.base|) (= |ULTIMATE.start_main_#t~ret12#1.offset| 0) (<= (select (select |#memory_int| |ULTIMATE.start_main_#t~ret12#1.base|) 0) 2147483647) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_#res#1.base|) 0) 2147483647) (= ~q_front~0 ~q_back~0) (= 0 |ULTIMATE.start_create_fresh_int_array_#res#1.offset|) (<= (+ 2 |ULTIMATE.start_main_#t~ret12#1.base|) |ULTIMATE.start_main_~#t2~0#1.base|)), 5069#(and (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= |thread1Thread1of1ForFork1_~i~0#1| 1) (<= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 1) (<= 1 ~q_back~0) (<= 1 ~n~0) (<= ~n~0 1)), 175#(<= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 1), 1927#(< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|), Black: 3778#(and (<= ~s~0 0) (<= |thread2Thread1of1ForFork0_~j~0#1| 1)), Black: 3771#(and (<= ~s~0 0) (exists ((v_~q_back~0_103 Int)) (and (<= v_~q_back~0_103 ~q_front~0) (<= ~q_front~0 v_~q_back~0_103) (= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* v_~q_back~0_103 4))) 1)))), 3000#(or (and (or (< ~q_front~0 (+ ~q_back~0 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< 0 (+ ~q_front~0 1))) (or (< |#StackHeapBarrier| (+ |ULTIMATE.start_main_~#t2~0#1.base| 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< |#StackHeapBarrier| (+ 1 |ULTIMATE.start_main_~#t1~0#1.base|)))) (not (<= 0 ~q_back~0))), 22#L101-1true, Black: 3131#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 0) (<= (+ ~n~0 ~q_front~0) (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~q_back~0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t1~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= ~q_front~0 ~q_back~0)), Black: 3162#(and (or (and (or (< ~q_front~0 (+ ~q_back~0 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< 0 (+ ~q_front~0 1))) (or (< |#StackHeapBarrier| (+ |ULTIMATE.start_main_~#t2~0#1.base| 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< |#StackHeapBarrier| (+ 1 |ULTIMATE.start_main_~#t1~0#1.base|)))) (not (<= 0 ~q_back~0))) (<= (+ |thread2Thread1of1ForFork0_~j~0#1| ~s~0) 2147483647)), 120#L75true, 3171#true, Black: 2479#true, Black: 3160#(and (or (and (or (< ~q_front~0 (+ ~q_back~0 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< 0 (+ ~q_front~0 1))) (or (< |#StackHeapBarrier| (+ |ULTIMATE.start_main_~#t2~0#1.base| 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< |#StackHeapBarrier| (+ 1 |ULTIMATE.start_main_~#t1~0#1.base|)))) (not (<= 0 ~q_back~0))) (= |thread2Thread1of1ForFork0_~j~0#1| 1) (= ~s~0 0)), Black: 865#(and (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 0)), Black: 4445#(and (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~1#1_18| Int)) (and (<= ~n~0 (+ |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_18| 1)) (<= |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_18| 0) (<= (select (select |#memory_int| ~q~0.base) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_18| 4) ~q~0.offset)) 2147483647))) (= ~q~0.offset 0) (= ~q_front~0 ~q_back~0)), 4447#(and (or (<= ~q_front~0 ~q_back~0) (<= (+ ~q_front~0 1) 0)) (or (not (<= (+ ~q_front~0 1) 0)) (<= ~q_back~0 ~q_front~0)) (or (and (or (< |#StackHeapBarrier| (+ |ULTIMATE.start_main_~#t2~0#1.base| 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< |#StackHeapBarrier| (+ 1 |ULTIMATE.start_main_~#t1~0#1.base|)))) (not (<= 0 ~q_back~0)))), Black: 4451#(and (or (<= ~q_front~0 ~q_back~0) (<= (+ ~q_front~0 1) 0)) (<= (+ |thread2Thread1of1ForFork0_~j~0#1| ~s~0) 2147483647) (or (not (<= (+ ~q_front~0 1) 0)) (<= ~q_back~0 ~q_front~0)) (or (and (or (< |#StackHeapBarrier| (+ |ULTIMATE.start_main_~#t2~0#1.base| 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< |#StackHeapBarrier| (+ 1 |ULTIMATE.start_main_~#t1~0#1.base|)))) (not (<= 0 ~q_back~0)))), Black: 3796#(and (= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* ~q_front~0 4))) 1) (<= ~q_front~0 0) (< 0 (+ ~q_front~0 1)) (= ~q~0.offset 0)), Black: 4449#(and (or (<= ~q_front~0 ~q_back~0) (<= (+ ~q_front~0 1) 0)) (or (not (<= (+ ~q_front~0 1) 0)) (<= ~q_back~0 ~q_front~0)) (or (and (or (< |#StackHeapBarrier| (+ |ULTIMATE.start_main_~#t2~0#1.base| 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< |#StackHeapBarrier| (+ 1 |ULTIMATE.start_main_~#t1~0#1.base|)))) (not (<= 0 ~q_back~0))) (= |thread2Thread1of1ForFork0_~j~0#1| 1) (= ~s~0 0)), Black: 620#(and (<= |ULTIMATE.start_create_fresh_int_array_#t~post20#1| 2147483646) (< |ULTIMATE.start_create_fresh_int_array_~i~1#1| 2147483647)), Black: 171#true, Black: 608#(and (<= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 1) (<= |ULTIMATE.start_create_fresh_int_array_#t~post20#1| 1)), Black: 614#(and (< |ULTIMATE.start_create_fresh_int_array_~i~1#1| 2147483646) (< |ULTIMATE.start_create_fresh_int_array_#t~post20#1| 2147483646)), Black: 1138#(and (= |thread1Thread1of1ForFork1_#t~post1#1| 0) (= |thread1Thread1of1ForFork1_~i~0#1| 0)), Black: 1135#(= |thread1Thread1of1ForFork1_~i~0#1| 0), Black: 1136#(= |thread1Thread1of1ForFork1_#t~post1#1| 0), Black: 1145#(<= ~q_back~0 ~q_front~0), Black: 2166#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (<= (+ 2 ~q~0.base) |ULTIMATE.start_main_~#t2~0#1.base|) (= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* ~q_front~0 4))) 0)), Black: 2170#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (<= ~s~0 0) (<= |thread2Thread1of1ForFork0_~j~0#1| 0))]) [2022-11-18 21:07:41,866 INFO L383 tUnfolder$Statistics]: this new event has 118 ancestors and is cut-off event [2022-11-18 21:07:41,867 INFO L386 tUnfolder$Statistics]: existing Event has 111 ancestors and is cut-off event [2022-11-18 21:07:41,867 INFO L386 tUnfolder$Statistics]: existing Event has 111 ancestors and is cut-off event [2022-11-18 21:07:41,867 INFO L386 tUnfolder$Statistics]: existing Event has 111 ancestors and is cut-off event [2022-11-18 21:07:41,868 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([543] L71-->L75: Formula: (and (= |v_thread2Thread1of1ForFork0_~j~0#1_7| (select (select |v_#memory_int_56| v_~q~0.base_48) (+ (* v_~q_front~0_35 4) v_~q~0.offset_48))) (= (+ v_~q_front~0_35 1) v_~q_front~0_34) (= |v_thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1_5| |v_thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1_5|) (= (ite (and (< v_~q_front~0_35 v_~n~0_45) (< v_~q_front~0_35 v_~q_back~0_82) (<= 0 v_~q_front~0_35)) 1 0) |v_thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1_5|) (<= v_~q_front~0_34 2147483647) (not (= |v_thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1_5| 0)) (<= 0 (+ v_~q_front~0_34 2147483648))) InVars {~q_back~0=v_~q_back~0_82, #memory_int=|v_#memory_int_56|, ~q~0.base=v_~q~0.base_48, ~n~0=v_~n~0_45, ~q~0.offset=v_~q~0.offset_48, ~q_front~0=v_~q_front~0_35} OutVars{thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1=|v_thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1_5|, thread2Thread1of1ForFork0_~j~0#1=|v_thread2Thread1of1ForFork0_~j~0#1_7|, ~q_back~0=v_~q_back~0_82, thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1=|v_thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1_5|, #memory_int=|v_#memory_int_56|, thread2Thread1of1ForFork0_#t~mem6#1=|v_thread2Thread1of1ForFork0_#t~mem6#1_5|, thread2Thread1of1ForFork0_#t~post7#1=|v_thread2Thread1of1ForFork0_#t~post7#1_5|, ~q~0.base=v_~q~0.base_48, ~n~0=v_~n~0_45, ~q~0.offset=v_~q~0.offset_48, ~q_front~0=v_~q_front~0_34} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1, thread2Thread1of1ForFork0_~j~0#1, thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1, thread2Thread1of1ForFork0_#t~mem6#1, thread2Thread1of1ForFork0_#t~post7#1, ~q_front~0][255], [Black: 3465#(and (<= ~s~0 0) (exists ((v_~q_back~0_102 Int)) (and (<= ~q_front~0 v_~q_back~0_102) (= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* v_~q_back~0_102 4))) 1) (<= v_~q_back~0_102 ~q_front~0)))), Black: 3472#(and (<= ~s~0 0) (<= |thread2Thread1of1ForFork0_~j~0#1| 1)), Black: 3458#(exists ((v_~q_back~0_102 Int)) (and (<= ~q_front~0 v_~q_back~0_102) (= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* v_~q_back~0_102 4))) 1) (<= v_~q_back~0_102 ~q_front~0))), thread2Thread1of1ForFork0InUse, 632#(<= 1 |ULTIMATE.start_create_fresh_int_array_~i~1#1|), Black: 1810#(and (<= (+ |ULTIMATE.start_create_fresh_int_array_#res#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (<= (+ ~n~0 ~q_front~0) (+ ~q_back~0 1)) (<= (+ |ULTIMATE.start_create_fresh_int_array_#res#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_#res#1.base|) 0) 2147483647) (= ~q_front~0 ~q_back~0) (= 0 |ULTIMATE.start_create_fresh_int_array_#res#1.offset|)), Black: 1793#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 0) (<= (+ ~n~0 ~q_front~0) (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~q_back~0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= ~q_front~0 ~q_back~0)), Black: 1808#(and (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| Int)) (and (<= ~n~0 (+ |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 1)) (<= |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 0) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 4) |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483647))) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) 0) 2147483647) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= ~q_front~0 ~q_back~0)), Black: 1821#(and (or (= (+ ~q~0.offset (* ~q_front~0 4)) 0) (= ~q~0.offset 0)) (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| Int)) (and (<= ~n~0 (+ |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 1)) (<= |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 0) (<= (select (select |#memory_int| ~q~0.base) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 4) ~q~0.offset)) 2147483647))) (or (<= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* ~q_front~0 4))) 2147483647) (not (= (+ ~q~0.offset (* ~q_front~0 4)) 0))) (= ~q_front~0 ~q_back~0)), Black: 1814#(and (<= (+ 2 ~q~0.base) |ULTIMATE.start_main_~#t2~0#1.base|) (<= (+ 2 ~q~0.base) |ULTIMATE.start_main_~#t1~0#1.base|) (or (= (+ ~q~0.offset (* ~q_front~0 4)) 0) (= ~q~0.offset 0)) (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| Int)) (and (<= ~n~0 (+ |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 1)) (<= |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 0) (<= (select (select |#memory_int| ~q~0.base) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 4) ~q~0.offset)) 2147483647))) (or (<= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* ~q_front~0 4))) 2147483647) (not (= (+ ~q~0.offset (* ~q_front~0 4)) 0))) (= ~q_front~0 ~q_back~0)), Black: 1476#(<= (+ |thread2Thread1of1ForFork0_~j~0#1| ~s~0) 2147483647), Black: 1806#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| Int)) (and (<= |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 0) (<= |ULTIMATE.start_create_fresh_int_array_~i~1#1| (+ |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 1)) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 4) |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483647))) (<= (+ ~n~0 ~q_front~0) (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~q_back~0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) 0) 2147483647) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= ~q_front~0 ~q_back~0)), Black: 166#(and (= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 0) (= |ULTIMATE.start_create_fresh_int_array_#t~post20#1| 0)), Black: 1798#(and (<= |ULTIMATE.start_create_fresh_int_array_#t~nondet21#1| 2147483647) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 0) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* |ULTIMATE.start_create_fresh_int_array_~i~1#1| 4) |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483647) (<= (+ ~n~0 ~q_front~0) (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~q_back~0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= ~q_front~0 ~q_back~0)), Black: 1796#(and (<= |ULTIMATE.start_create_fresh_int_array_#t~nondet21#1| 2147483647) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 0) (<= (+ ~n~0 ~q_front~0) (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~q_back~0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= ~q_front~0 ~q_back~0)), Black: 2176#(and (<= ~q_back~0 ~q_front~0) (<= ~q_front~0 ~q_back~0)), Black: 1819#(and (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| Int)) (and (<= |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 0) (<= ~q_front~0 |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10|) (<= (select (select |#memory_int| ~q~0.base) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 4) ~q~0.offset)) 2147483647))) (= (+ ~q~0.offset (* ~q_front~0 4)) 0) (<= 0 ~q_front~0)), 1148#true, Black: 2475#(and (<= ~s~0 0) (<= |thread2Thread1of1ForFork0_~j~0#1| 0)), Black: 1812#(and (<= (+ |ULTIMATE.start_create_fresh_int_array_#res#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_#res#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| Int)) (and (<= (select (select |#memory_int| |ULTIMATE.start_main_#t~ret12#1.base|) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 4) |ULTIMATE.start_main_#t~ret12#1.offset|)) 2147483647) (<= ~n~0 (+ |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 1)) (<= |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 0))) (<= (+ 2 |ULTIMATE.start_main_#t~ret12#1.base|) |ULTIMATE.start_main_~#t1~0#1.base|) (= |ULTIMATE.start_main_#t~ret12#1.offset| 0) (<= (select (select |#memory_int| |ULTIMATE.start_main_#t~ret12#1.base|) 0) 2147483647) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_#res#1.base|) 0) 2147483647) (= ~q_front~0 ~q_back~0) (= 0 |ULTIMATE.start_create_fresh_int_array_#res#1.offset|) (<= (+ 2 |ULTIMATE.start_main_#t~ret12#1.base|) |ULTIMATE.start_main_~#t2~0#1.base|)), 5069#(and (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= |thread1Thread1of1ForFork1_~i~0#1| 1) (<= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 1) (<= 1 ~q_back~0) (<= 1 ~n~0) (<= ~n~0 1)), 175#(<= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 1), 1927#(< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|), Black: 3778#(and (<= ~s~0 0) (<= |thread2Thread1of1ForFork0_~j~0#1| 1)), Black: 3771#(and (<= ~s~0 0) (exists ((v_~q_back~0_103 Int)) (and (<= v_~q_back~0_103 ~q_front~0) (<= ~q_front~0 v_~q_back~0_103) (= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* v_~q_back~0_103 4))) 1)))), 3000#(or (and (or (< ~q_front~0 (+ ~q_back~0 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< 0 (+ ~q_front~0 1))) (or (< |#StackHeapBarrier| (+ |ULTIMATE.start_main_~#t2~0#1.base| 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< |#StackHeapBarrier| (+ 1 |ULTIMATE.start_main_~#t1~0#1.base|)))) (not (<= 0 ~q_back~0))), 22#L101-1true, Black: 3131#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 0) (<= (+ ~n~0 ~q_front~0) (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~q_back~0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t1~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= ~q_front~0 ~q_back~0)), Black: 3162#(and (or (and (or (< ~q_front~0 (+ ~q_back~0 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< 0 (+ ~q_front~0 1))) (or (< |#StackHeapBarrier| (+ |ULTIMATE.start_main_~#t2~0#1.base| 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< |#StackHeapBarrier| (+ 1 |ULTIMATE.start_main_~#t1~0#1.base|)))) (not (<= 0 ~q_back~0))) (<= (+ |thread2Thread1of1ForFork0_~j~0#1| ~s~0) 2147483647)), 120#L75true, 3171#true, Black: 2479#true, Black: 3160#(and (or (and (or (< ~q_front~0 (+ ~q_back~0 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< 0 (+ ~q_front~0 1))) (or (< |#StackHeapBarrier| (+ |ULTIMATE.start_main_~#t2~0#1.base| 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< |#StackHeapBarrier| (+ 1 |ULTIMATE.start_main_~#t1~0#1.base|)))) (not (<= 0 ~q_back~0))) (= |thread2Thread1of1ForFork0_~j~0#1| 1) (= ~s~0 0)), Black: 865#(and (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 0)), Black: 4445#(and (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~1#1_18| Int)) (and (<= ~n~0 (+ |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_18| 1)) (<= |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_18| 0) (<= (select (select |#memory_int| ~q~0.base) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_18| 4) ~q~0.offset)) 2147483647))) (= ~q~0.offset 0) (= ~q_front~0 ~q_back~0)), 4447#(and (or (<= ~q_front~0 ~q_back~0) (<= (+ ~q_front~0 1) 0)) (or (not (<= (+ ~q_front~0 1) 0)) (<= ~q_back~0 ~q_front~0)) (or (and (or (< |#StackHeapBarrier| (+ |ULTIMATE.start_main_~#t2~0#1.base| 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< |#StackHeapBarrier| (+ 1 |ULTIMATE.start_main_~#t1~0#1.base|)))) (not (<= 0 ~q_back~0)))), Black: 4451#(and (or (<= ~q_front~0 ~q_back~0) (<= (+ ~q_front~0 1) 0)) (<= (+ |thread2Thread1of1ForFork0_~j~0#1| ~s~0) 2147483647) (or (not (<= (+ ~q_front~0 1) 0)) (<= ~q_back~0 ~q_front~0)) (or (and (or (< |#StackHeapBarrier| (+ |ULTIMATE.start_main_~#t2~0#1.base| 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< |#StackHeapBarrier| (+ 1 |ULTIMATE.start_main_~#t1~0#1.base|)))) (not (<= 0 ~q_back~0)))), Black: 3796#(and (= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* ~q_front~0 4))) 1) (<= ~q_front~0 0) (< 0 (+ ~q_front~0 1)) (= ~q~0.offset 0)), Black: 4449#(and (or (<= ~q_front~0 ~q_back~0) (<= (+ ~q_front~0 1) 0)) (or (not (<= (+ ~q_front~0 1) 0)) (<= ~q_back~0 ~q_front~0)) (or (and (or (< |#StackHeapBarrier| (+ |ULTIMATE.start_main_~#t2~0#1.base| 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< |#StackHeapBarrier| (+ 1 |ULTIMATE.start_main_~#t1~0#1.base|)))) (not (<= 0 ~q_back~0))) (= |thread2Thread1of1ForFork0_~j~0#1| 1) (= ~s~0 0)), Black: 620#(and (<= |ULTIMATE.start_create_fresh_int_array_#t~post20#1| 2147483646) (< |ULTIMATE.start_create_fresh_int_array_~i~1#1| 2147483647)), Black: 171#true, Black: 608#(and (<= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 1) (<= |ULTIMATE.start_create_fresh_int_array_#t~post20#1| 1)), Black: 614#(and (< |ULTIMATE.start_create_fresh_int_array_~i~1#1| 2147483646) (< |ULTIMATE.start_create_fresh_int_array_#t~post20#1| 2147483646)), Black: 1138#(and (= |thread1Thread1of1ForFork1_#t~post1#1| 0) (= |thread1Thread1of1ForFork1_~i~0#1| 0)), Black: 1135#(= |thread1Thread1of1ForFork1_~i~0#1| 0), Black: 1136#(= |thread1Thread1of1ForFork1_#t~post1#1| 0), Black: 1145#(<= ~q_back~0 ~q_front~0), Black: 2166#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (<= (+ 2 ~q~0.base) |ULTIMATE.start_main_~#t2~0#1.base|) (= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* ~q_front~0 4))) 0)), Black: 2170#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (<= ~s~0 0) (<= |thread2Thread1of1ForFork0_~j~0#1| 0)), 55#L50true]) [2022-11-18 21:07:41,869 INFO L383 tUnfolder$Statistics]: this new event has 118 ancestors and is cut-off event [2022-11-18 21:07:41,870 INFO L386 tUnfolder$Statistics]: existing Event has 111 ancestors and is cut-off event [2022-11-18 21:07:41,870 INFO L386 tUnfolder$Statistics]: existing Event has 111 ancestors and is cut-off event [2022-11-18 21:07:41,870 INFO L386 tUnfolder$Statistics]: existing Event has 111 ancestors and is cut-off event [2022-11-18 21:07:41,871 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([543] L71-->L75: Formula: (and (= |v_thread2Thread1of1ForFork0_~j~0#1_7| (select (select |v_#memory_int_56| v_~q~0.base_48) (+ (* v_~q_front~0_35 4) v_~q~0.offset_48))) (= (+ v_~q_front~0_35 1) v_~q_front~0_34) (= |v_thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1_5| |v_thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1_5|) (= (ite (and (< v_~q_front~0_35 v_~n~0_45) (< v_~q_front~0_35 v_~q_back~0_82) (<= 0 v_~q_front~0_35)) 1 0) |v_thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1_5|) (<= v_~q_front~0_34 2147483647) (not (= |v_thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1_5| 0)) (<= 0 (+ v_~q_front~0_34 2147483648))) InVars {~q_back~0=v_~q_back~0_82, #memory_int=|v_#memory_int_56|, ~q~0.base=v_~q~0.base_48, ~n~0=v_~n~0_45, ~q~0.offset=v_~q~0.offset_48, ~q_front~0=v_~q_front~0_35} OutVars{thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1=|v_thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1_5|, thread2Thread1of1ForFork0_~j~0#1=|v_thread2Thread1of1ForFork0_~j~0#1_7|, ~q_back~0=v_~q_back~0_82, thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1=|v_thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1_5|, #memory_int=|v_#memory_int_56|, thread2Thread1of1ForFork0_#t~mem6#1=|v_thread2Thread1of1ForFork0_#t~mem6#1_5|, thread2Thread1of1ForFork0_#t~post7#1=|v_thread2Thread1of1ForFork0_#t~post7#1_5|, ~q~0.base=v_~q~0.base_48, ~n~0=v_~n~0_45, ~q~0.offset=v_~q~0.offset_48, ~q_front~0=v_~q_front~0_34} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1, thread2Thread1of1ForFork0_~j~0#1, thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1, thread2Thread1of1ForFork0_#t~mem6#1, thread2Thread1of1ForFork0_#t~post7#1, ~q_front~0][255], [30#L49-7true, Black: 3465#(and (<= ~s~0 0) (exists ((v_~q_back~0_102 Int)) (and (<= ~q_front~0 v_~q_back~0_102) (= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* v_~q_back~0_102 4))) 1) (<= v_~q_back~0_102 ~q_front~0)))), Black: 3472#(and (<= ~s~0 0) (<= |thread2Thread1of1ForFork0_~j~0#1| 1)), Black: 3458#(exists ((v_~q_back~0_102 Int)) (and (<= ~q_front~0 v_~q_back~0_102) (= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* v_~q_back~0_102 4))) 1) (<= v_~q_back~0_102 ~q_front~0))), thread2Thread1of1ForFork0InUse, 632#(<= 1 |ULTIMATE.start_create_fresh_int_array_~i~1#1|), Black: 1810#(and (<= (+ |ULTIMATE.start_create_fresh_int_array_#res#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (<= (+ ~n~0 ~q_front~0) (+ ~q_back~0 1)) (<= (+ 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|v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 1)) (<= |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 0) (<= (select (select |#memory_int| ~q~0.base) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 4) ~q~0.offset)) 2147483647))) (or (<= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* ~q_front~0 4))) 2147483647) (not (= (+ ~q~0.offset (* ~q_front~0 4)) 0))) (= ~q_front~0 ~q_back~0)), Black: 1814#(and (<= (+ 2 ~q~0.base) |ULTIMATE.start_main_~#t2~0#1.base|) (<= (+ 2 ~q~0.base) |ULTIMATE.start_main_~#t1~0#1.base|) (or (= (+ ~q~0.offset (* ~q_front~0 4)) 0) (= ~q~0.offset 0)) (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| Int)) (and (<= ~n~0 (+ |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 1)) (<= |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 0) (<= (select (select |#memory_int| ~q~0.base) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 4) ~q~0.offset)) 2147483647))) (or (<= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* ~q_front~0 4))) 2147483647) (not (= (+ ~q~0.offset (* ~q_front~0 4)) 0))) (= ~q_front~0 ~q_back~0)), Black: 1476#(<= (+ |thread2Thread1of1ForFork0_~j~0#1| ~s~0) 2147483647), Black: 1806#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| Int)) (and (<= |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 0) (<= |ULTIMATE.start_create_fresh_int_array_~i~1#1| (+ |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 1)) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 4) |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483647))) (<= (+ ~n~0 ~q_front~0) (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| 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|ULTIMATE.start_main_~#t1~0#1.base|)))) (not (<= 0 ~q_back~0))), 22#L101-1true, Black: 3131#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 0) (<= (+ ~n~0 ~q_front~0) (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~q_back~0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t1~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= ~q_front~0 ~q_back~0)), Black: 3162#(and (or (and (or (< ~q_front~0 (+ ~q_back~0 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< 0 (+ ~q_front~0 1))) (or (< |#StackHeapBarrier| (+ |ULTIMATE.start_main_~#t2~0#1.base| 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< 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Black: 1135#(= |thread1Thread1of1ForFork1_~i~0#1| 0), Black: 1136#(= |thread1Thread1of1ForFork1_#t~post1#1| 0), Black: 1145#(<= ~q_back~0 ~q_front~0), Black: 2166#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (<= (+ 2 ~q~0.base) |ULTIMATE.start_main_~#t2~0#1.base|) (= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* ~q_front~0 4))) 0)), Black: 2170#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (<= ~s~0 0) (<= |thread2Thread1of1ForFork0_~j~0#1| 0))]) [2022-11-18 21:07:41,872 INFO L383 tUnfolder$Statistics]: this new event has 117 ancestors and is cut-off event [2022-11-18 21:07:41,872 INFO L386 tUnfolder$Statistics]: existing Event has 110 ancestors and is cut-off event [2022-11-18 21:07:41,872 INFO L386 tUnfolder$Statistics]: existing Event has 110 ancestors and is cut-off event [2022-11-18 21:07:41,872 INFO L386 tUnfolder$Statistics]: existing Event has 110 ancestors and is cut-off event [2022-11-18 21:07:43,090 INFO L130 PetriNetUnfolder]: 1904/7524 cut-off events. [2022-11-18 21:07:43,091 INFO L131 PetriNetUnfolder]: For 43143/44550 co-relation queries the response was YES. [2022-11-18 21:07:43,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28622 conditions, 7524 events. 1904/7524 cut-off events. For 43143/44550 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 78014 event pairs, 321 based on Foata normal form. 549/7551 useless extension candidates. Maximal degree in co-relation 28450. Up to 1781 conditions per place. [2022-11-18 21:07:43,194 INFO L137 encePairwiseOnDemand]: 144/162 looper letters, 173 selfloop transitions, 38 changer transitions 0/352 dead transitions. [2022-11-18 21:07:43,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 352 transitions, 3179 flow [2022-11-18 21:07:43,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 21:07:43,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-18 21:07:43,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2508 transitions. [2022-11-18 21:07:43,200 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2022-11-18 21:07:43,200 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2508 transitions. [2022-11-18 21:07:43,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2508 transitions. [2022-11-18 21:07:43,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:07:43,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2508 transitions. [2022-11-18 21:07:43,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 114.0) internal successors, (2508), 22 states have internal predecessors, (2508), 0 states have call successors, (0), 0 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 21:07:43,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 162.0) internal successors, (3726), 23 states have internal predecessors, (3726), 0 states have call successors, (0), 0 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 21:07:43,215 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 162.0) internal successors, (3726), 23 states have internal predecessors, (3726), 0 states have call successors, (0), 0 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 21:07:43,215 INFO L175 Difference]: Start difference. First operand has 261 places, 285 transitions, 2092 flow. Second operand 22 states and 2508 transitions. [2022-11-18 21:07:43,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 352 transitions, 3179 flow [2022-11-18 21:07:43,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 352 transitions, 3032 flow, removed 30 selfloop flow, removed 25 redundant places. [2022-11-18 21:07:43,778 INFO L231 Difference]: Finished difference. Result has 258 places, 253 transitions, 1770 flow [2022-11-18 21:07:43,779 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=1536, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1770, PETRI_PLACES=258, PETRI_TRANSITIONS=253} [2022-11-18 21:07:43,780 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 120 predicate places. [2022-11-18 21:07:43,780 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 253 transitions, 1770 flow [2022-11-18 21:07:43,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 113.36842105263158) internal successors, (2154), 19 states have internal predecessors, (2154), 0 states have call successors, (0), 0 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 21:07:43,781 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:07:43,782 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] [2022-11-18 21:07:43,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 21:07:43,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:07:43,995 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-18 21:07:43,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:07:43,996 INFO L85 PathProgramCache]: Analyzing trace with hash -277142655, now seen corresponding path program 1 times [2022-11-18 21:07:43,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:07:43,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497545796] [2022-11-18 21:07:43,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:07:43,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:07:44,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:46,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:07:46,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:07:46,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497545796] [2022-11-18 21:07:46,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497545796] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:07:46,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665287447] [2022-11-18 21:07:46,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:07:46,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:07:46,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:07:46,163 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:07:46,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 21:07:46,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:46,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-18 21:07:46,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:07:47,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 21:07:48,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:07:48,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-18 21:07:48,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:07:48,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-18 21:07:48,766 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-18 21:07:48,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2022-11-18 21:07:48,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:07:48,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:07:49,039 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_327 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_327) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)) 2147483649))) is different from false [2022-11-18 21:07:50,236 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:07:50,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2022-11-18 21:07:50,249 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:07:50,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 84 [2022-11-18 21:07:50,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 56 [2022-11-18 21:07:50,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2022-11-18 21:07:52,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:07:52,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665287447] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:07:52,209 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:07:52,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 63 [2022-11-18 21:07:52,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294827050] [2022-11-18 21:07:52,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:07:52,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-18 21:07:52,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:07:52,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-18 21:07:52,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=3652, Unknown=4, NotChecked=122, Total=4032 [2022-11-18 21:07:52,220 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 162 [2022-11-18 21:07:52,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 253 transitions, 1770 flow. Second operand has 64 states, 64 states have (on average 81.0) internal successors, (5184), 64 states have internal predecessors, (5184), 0 states have call successors, (0), 0 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 21:07:52,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:07:52,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 162 [2022-11-18 21:07:52,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:07:58,722 INFO L130 PetriNetUnfolder]: 2648/8866 cut-off events. [2022-11-18 21:07:58,722 INFO L131 PetriNetUnfolder]: For 38137/41476 co-relation queries the response was YES. [2022-11-18 21:07:58,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32171 conditions, 8866 events. 2648/8866 cut-off events. For 38137/41476 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 94263 event pairs, 345 based on Foata normal form. 625/9055 useless extension candidates. Maximal degree in co-relation 31984. Up to 2849 conditions per place. [2022-11-18 21:07:58,901 INFO L137 encePairwiseOnDemand]: 130/162 looper letters, 152 selfloop transitions, 83 changer transitions 0/309 dead transitions. [2022-11-18 21:07:58,901 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 309 transitions, 2644 flow [2022-11-18 21:07:58,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 21:07:58,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 21:07:58,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2493 transitions. [2022-11-18 21:07:58,915 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.512962962962963 [2022-11-18 21:07:58,915 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2493 transitions. [2022-11-18 21:07:58,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2493 transitions. [2022-11-18 21:07:58,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:07:58,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2493 transitions. [2022-11-18 21:07:58,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 83.1) internal successors, (2493), 30 states have internal predecessors, (2493), 0 states have call successors, (0), 0 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 21:07:58,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 162.0) internal successors, (5022), 31 states have internal predecessors, (5022), 0 states have call successors, (0), 0 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 21:07:58,935 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 162.0) internal successors, (5022), 31 states have internal predecessors, (5022), 0 states have call successors, (0), 0 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 21:07:58,937 INFO L175 Difference]: Start difference. First operand has 258 places, 253 transitions, 1770 flow. Second operand 30 states and 2493 transitions. [2022-11-18 21:07:58,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 309 transitions, 2644 flow [2022-11-18 21:07:59,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 309 transitions, 2608 flow, removed 3 selfloop flow, removed 11 redundant places. [2022-11-18 21:07:59,232 INFO L231 Difference]: Finished difference. Result has 279 places, 275 transitions, 2184 flow [2022-11-18 21:07:59,233 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=1734, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2184, PETRI_PLACES=279, PETRI_TRANSITIONS=275} [2022-11-18 21:07:59,233 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 141 predicate places. [2022-11-18 21:07:59,234 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 275 transitions, 2184 flow [2022-11-18 21:07:59,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 81.0) internal successors, (5184), 64 states have internal predecessors, (5184), 0 states have call successors, (0), 0 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 21:07:59,236 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:07:59,236 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] [2022-11-18 21:07:59,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 21:07:59,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 21:07:59,442 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-18 21:07:59,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:07:59,443 INFO L85 PathProgramCache]: Analyzing trace with hash -148711389, now seen corresponding path program 2 times [2022-11-18 21:07:59,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:07:59,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639300275] [2022-11-18 21:07:59,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:07:59,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:07:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:00,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:08:00,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:00,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639300275] [2022-11-18 21:08:00,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639300275] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:08:00,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943239969] [2022-11-18 21:08:00,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:08:00,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:08:00,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:08:00,379 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:08:00,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 21:08:00,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 21:08:00,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:08:00,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 21:08:00,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:08:00,935 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-18 21:08:00,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-11-18 21:08:00,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:08:00,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:08:00,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943239969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:08:00,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:08:00,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2022-11-18 21:08:00,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522921113] [2022-11-18 21:08:00,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:08:00,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:08:00,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:00,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:08:00,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-11-18 21:08:00,973 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 162 [2022-11-18 21:08:00,974 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 275 transitions, 2184 flow. Second operand has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 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 21:08:00,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:08:00,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 162 [2022-11-18 21:08:00,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:08:03,486 INFO L130 PetriNetUnfolder]: 2758/9027 cut-off events. [2022-11-18 21:08:03,486 INFO L131 PetriNetUnfolder]: For 51831/58392 co-relation queries the response was YES. [2022-11-18 21:08:03,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35648 conditions, 9027 events. 2758/9027 cut-off events. For 51831/58392 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 95459 event pairs, 902 based on Foata normal form. 290/8789 useless extension candidates. Maximal degree in co-relation 35477. Up to 5066 conditions per place. [2022-11-18 21:08:03,580 INFO L137 encePairwiseOnDemand]: 152/162 looper letters, 141 selfloop transitions, 37 changer transitions 1/304 dead transitions. [2022-11-18 21:08:03,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 304 transitions, 2764 flow [2022-11-18 21:08:03,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:08:03,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 21:08:03,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 754 transitions. [2022-11-18 21:08:03,583 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7757201646090535 [2022-11-18 21:08:03,584 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 754 transitions. [2022-11-18 21:08:03,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 754 transitions. [2022-11-18 21:08:03,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:08:03,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 754 transitions. [2022-11-18 21:08:03,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 125.66666666666667) internal successors, (754), 6 states have internal predecessors, (754), 0 states have call successors, (0), 0 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 21:08:03,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 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 21:08:03,588 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 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 21:08:03,589 INFO L175 Difference]: Start difference. First operand has 279 places, 275 transitions, 2184 flow. Second operand 6 states and 754 transitions. [2022-11-18 21:08:03,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 304 transitions, 2764 flow [2022-11-18 21:08:03,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 304 transitions, 2697 flow, removed 11 selfloop flow, removed 21 redundant places. [2022-11-18 21:08:03,889 INFO L231 Difference]: Finished difference. Result has 266 places, 286 transitions, 2349 flow [2022-11-18 21:08:03,890 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=2117, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2349, PETRI_PLACES=266, PETRI_TRANSITIONS=286} [2022-11-18 21:08:03,891 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 128 predicate places. [2022-11-18 21:08:03,891 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 286 transitions, 2349 flow [2022-11-18 21:08:03,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 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 21:08:03,891 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:08:03,892 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] [2022-11-18 21:08:03,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 21:08:04,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 21:08:04,099 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-18 21:08:04,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:04,099 INFO L85 PathProgramCache]: Analyzing trace with hash -691550083, now seen corresponding path program 3 times [2022-11-18 21:08:04,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:04,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91832528] [2022-11-18 21:08:04,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:04,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:04,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:05,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:08:05,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:05,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91832528] [2022-11-18 21:08:05,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91832528] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:08:05,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921813397] [2022-11-18 21:08:05,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 21:08:05,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:08:05,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:08:05,779 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:08:05,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 21:08:05,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 21:08:05,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:08:05,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 21:08:05,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:08:06,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-18 21:08:06,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:08:06,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:08:06,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921813397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:08:06,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:08:06,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [22] total 26 [2022-11-18 21:08:06,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454809053] [2022-11-18 21:08:06,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:08:06,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:08:06,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:06,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:08:06,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-11-18 21:08:06,153 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 162 [2022-11-18 21:08:06,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 286 transitions, 2349 flow. Second operand has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 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 21:08:06,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:08:06,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 162 [2022-11-18 21:08:06,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:08:08,723 INFO L130 PetriNetUnfolder]: 2738/8951 cut-off events. [2022-11-18 21:08:08,723 INFO L131 PetriNetUnfolder]: For 56882/63489 co-relation queries the response was YES. [2022-11-18 21:08:08,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37720 conditions, 8951 events. 2738/8951 cut-off events. For 56882/63489 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 94488 event pairs, 889 based on Foata normal form. 286/8710 useless extension candidates. Maximal degree in co-relation 37559. Up to 5091 conditions per place. [2022-11-18 21:08:08,825 INFO L137 encePairwiseOnDemand]: 156/162 looper letters, 155 selfloop transitions, 23 changer transitions 1/304 dead transitions. [2022-11-18 21:08:08,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 304 transitions, 2857 flow [2022-11-18 21:08:08,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:08:08,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 21:08:08,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 749 transitions. [2022-11-18 21:08:08,828 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7705761316872428 [2022-11-18 21:08:08,828 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 749 transitions. [2022-11-18 21:08:08,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 749 transitions. [2022-11-18 21:08:08,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:08:08,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 749 transitions. [2022-11-18 21:08:08,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 124.83333333333333) internal successors, (749), 6 states have internal predecessors, (749), 0 states have call successors, (0), 0 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 21:08:08,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 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 21:08:08,833 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 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 21:08:08,833 INFO L175 Difference]: Start difference. First operand has 266 places, 286 transitions, 2349 flow. Second operand 6 states and 749 transitions. [2022-11-18 21:08:08,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 304 transitions, 2857 flow [2022-11-18 21:08:09,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 304 transitions, 2828 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-18 21:08:09,340 INFO L231 Difference]: Finished difference. Result has 271 places, 286 transitions, 2376 flow [2022-11-18 21:08:09,340 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=2322, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2376, PETRI_PLACES=271, PETRI_TRANSITIONS=286} [2022-11-18 21:08:09,341 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 133 predicate places. [2022-11-18 21:08:09,341 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 286 transitions, 2376 flow [2022-11-18 21:08:09,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 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 21:08:09,341 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:08:09,342 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] [2022-11-18 21:08:09,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 21:08:09,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 21:08:09,542 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-18 21:08:09,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:09,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1012281855, now seen corresponding path program 1 times [2022-11-18 21:08:09,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:09,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186959455] [2022-11-18 21:08:09,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:09,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:11,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:08:11,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:11,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186959455] [2022-11-18 21:08:11,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186959455] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:08:11,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432575081] [2022-11-18 21:08:11,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:11,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:08:11,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:08:11,238 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:08:11,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 21:08:11,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:11,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-18 21:08:11,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:08:12,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 21:08:13,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:08:13,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-18 21:08:13,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:08:13,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-18 21:08:13,843 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-18 21:08:13,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2022-11-18 21:08:13,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:08:13,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:08:15,507 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:08:15,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2022-11-18 21:08:15,523 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:08:15,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 174 treesize of output 162 [2022-11-18 21:08:15,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 134 [2022-11-18 21:08:15,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 110 [2022-11-18 21:08:17,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:08:17,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432575081] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:08:17,410 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:08:17,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 63 [2022-11-18 21:08:17,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609823541] [2022-11-18 21:08:17,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:08:17,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-18 21:08:17,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:17,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-18 21:08:17,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=3768, Unknown=4, NotChecked=0, Total=4032 [2022-11-18 21:08:17,419 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 162 [2022-11-18 21:08:17,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 286 transitions, 2376 flow. Second operand has 64 states, 64 states have (on average 81.0) internal successors, (5184), 64 states have internal predecessors, (5184), 0 states have call successors, (0), 0 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 21:08:17,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:08:17,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 162 [2022-11-18 21:08:17,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:08:24,563 INFO L130 PetriNetUnfolder]: 3369/10930 cut-off events. [2022-11-18 21:08:24,563 INFO L131 PetriNetUnfolder]: For 73840/82377 co-relation queries the response was YES. [2022-11-18 21:08:24,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47581 conditions, 10930 events. 3369/10930 cut-off events. For 73840/82377 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 119042 event pairs, 437 based on Foata normal form. 1346/11759 useless extension candidates. Maximal degree in co-relation 47391. Up to 4741 conditions per place. [2022-11-18 21:08:24,690 INFO L137 encePairwiseOnDemand]: 126/162 looper letters, 162 selfloop transitions, 134 changer transitions 0/370 dead transitions. [2022-11-18 21:08:24,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 370 transitions, 3853 flow [2022-11-18 21:08:24,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 21:08:24,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-18 21:08:24,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2976 transitions. [2022-11-18 21:08:24,905 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5102880658436214 [2022-11-18 21:08:24,905 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2976 transitions. [2022-11-18 21:08:24,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2976 transitions. [2022-11-18 21:08:24,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:08:24,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2976 transitions. [2022-11-18 21:08:24,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 82.66666666666667) internal successors, (2976), 36 states have internal predecessors, (2976), 0 states have call successors, (0), 0 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 21:08:24,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 162.0) internal successors, (5994), 37 states have internal predecessors, (5994), 0 states have call successors, (0), 0 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 21:08:24,944 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 162.0) internal successors, (5994), 37 states have internal predecessors, (5994), 0 states have call successors, (0), 0 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 21:08:24,944 INFO L175 Difference]: Start difference. First operand has 271 places, 286 transitions, 2376 flow. Second operand 36 states and 2976 transitions. [2022-11-18 21:08:24,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 370 transitions, 3853 flow [2022-11-18 21:08:25,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 370 transitions, 3805 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 21:08:25,428 INFO L231 Difference]: Finished difference. Result has 309 places, 350 transitions, 3631 flow [2022-11-18 21:08:25,429 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=2330, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=3631, PETRI_PLACES=309, PETRI_TRANSITIONS=350} [2022-11-18 21:08:25,429 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 171 predicate places. [2022-11-18 21:08:25,429 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 350 transitions, 3631 flow [2022-11-18 21:08:25,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 81.0) internal successors, (5184), 64 states have internal predecessors, (5184), 0 states have call successors, (0), 0 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 21:08:25,430 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:08:25,431 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] [2022-11-18 21:08:25,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 21:08:25,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:08:25,632 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-18 21:08:25,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:25,632 INFO L85 PathProgramCache]: Analyzing trace with hash -2146888161, now seen corresponding path program 2 times [2022-11-18 21:08:25,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:25,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686379447] [2022-11-18 21:08:25,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:25,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:26,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:08:26,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:26,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686379447] [2022-11-18 21:08:26,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686379447] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:08:26,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379317019] [2022-11-18 21:08:26,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:08:26,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:08:26,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:08:26,665 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:08:26,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 21:08:26,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 21:08:26,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:08:26,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 21:08:26,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:08:26,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-18 21:08:27,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:08:27,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:08:27,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379317019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:08:27,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:08:27,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 20 [2022-11-18 21:08:27,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521545616] [2022-11-18 21:08:27,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:08:27,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:08:27,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:27,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:08:27,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2022-11-18 21:08:27,019 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 162 [2022-11-18 21:08:27,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 350 transitions, 3631 flow. Second operand has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 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 21:08:27,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:08:27,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 162 [2022-11-18 21:08:27,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:08:30,693 INFO L130 PetriNetUnfolder]: 4063/12644 cut-off events. [2022-11-18 21:08:30,693 INFO L131 PetriNetUnfolder]: For 124586/143037 co-relation queries the response was YES. [2022-11-18 21:08:30,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63967 conditions, 12644 events. 4063/12644 cut-off events. For 124586/143037 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 139595 event pairs, 1230 based on Foata normal form. 1052/12996 useless extension candidates. Maximal degree in co-relation 63780. Up to 5962 conditions per place. [2022-11-18 21:08:30,844 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 282 selfloop transitions, 25 changer transitions 0/433 dead transitions. [2022-11-18 21:08:30,844 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 433 transitions, 5464 flow [2022-11-18 21:08:30,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:08:30,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 21:08:30,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 754 transitions. [2022-11-18 21:08:30,847 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7757201646090535 [2022-11-18 21:08:30,847 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 754 transitions. [2022-11-18 21:08:30,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 754 transitions. [2022-11-18 21:08:30,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:08:30,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 754 transitions. [2022-11-18 21:08:30,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 125.66666666666667) internal successors, (754), 6 states have internal predecessors, (754), 0 states have call successors, (0), 0 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 21:08:30,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 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 21:08:30,852 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 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 21:08:30,853 INFO L175 Difference]: Start difference. First operand has 309 places, 350 transitions, 3631 flow. Second operand 6 states and 754 transitions. [2022-11-18 21:08:30,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 433 transitions, 5464 flow [2022-11-18 21:08:32,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 433 transitions, 5332 flow, removed 36 selfloop flow, removed 25 redundant places. [2022-11-18 21:08:32,050 INFO L231 Difference]: Finished difference. Result has 290 places, 354 transitions, 3671 flow [2022-11-18 21:08:32,050 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=3525, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3671, PETRI_PLACES=290, PETRI_TRANSITIONS=354} [2022-11-18 21:08:32,051 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 152 predicate places. [2022-11-18 21:08:32,051 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 354 transitions, 3671 flow [2022-11-18 21:08:32,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 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 21:08:32,051 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:08:32,052 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 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] [2022-11-18 21:08:32,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 21:08:32,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:08:32,253 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-18 21:08:32,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:32,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1868906777, now seen corresponding path program 2 times [2022-11-18 21:08:32,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:32,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143447938] [2022-11-18 21:08:32,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:32,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:32,463 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:08:32,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:32,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143447938] [2022-11-18 21:08:32,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143447938] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:08:32,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556818884] [2022-11-18 21:08:32,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:08:32,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:08:32,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:08:32,466 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:08:32,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 21:08:32,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 21:08:32,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:08:32,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 21:08:32,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:08:32,963 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 21:08:32,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:08:33,108 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 21:08:33,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556818884] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:08:33,109 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:08:33,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-18 21:08:33,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809123876] [2022-11-18 21:08:33,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:08:33,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 21:08:33,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:33,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 21:08:33,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-18 21:08:33,114 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 162 [2022-11-18 21:08:33,115 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 354 transitions, 3671 flow. Second operand has 18 states, 18 states have (on average 121.61111111111111) internal successors, (2189), 18 states have internal predecessors, (2189), 0 states have call successors, (0), 0 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 21:08:33,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:08:33,116 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 162 [2022-11-18 21:08:33,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:08:37,625 INFO L130 PetriNetUnfolder]: 3531/15365 cut-off events. [2022-11-18 21:08:37,625 INFO L131 PetriNetUnfolder]: For 148247/157064 co-relation queries the response was YES. [2022-11-18 21:08:37,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71192 conditions, 15365 events. 3531/15365 cut-off events. For 148247/157064 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 187353 event pairs, 497 based on Foata normal form. 936/15881 useless extension candidates. Maximal degree in co-relation 71015. Up to 3620 conditions per place. [2022-11-18 21:08:37,801 INFO L137 encePairwiseOnDemand]: 151/162 looper letters, 462 selfloop transitions, 25 changer transitions 0/701 dead transitions. [2022-11-18 21:08:37,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 701 transitions, 9832 flow [2022-11-18 21:08:37,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 21:08:37,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-18 21:08:37,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2931 transitions. [2022-11-18 21:08:37,809 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.753858024691358 [2022-11-18 21:08:37,809 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2931 transitions. [2022-11-18 21:08:37,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2931 transitions. [2022-11-18 21:08:37,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:08:37,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2931 transitions. [2022-11-18 21:08:37,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 122.125) internal successors, (2931), 24 states have internal predecessors, (2931), 0 states have call successors, (0), 0 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 21:08:37,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 162.0) internal successors, (4050), 25 states have internal predecessors, (4050), 0 states have call successors, (0), 0 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 21:08:37,825 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 162.0) internal successors, (4050), 25 states have internal predecessors, (4050), 0 states have call successors, (0), 0 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 21:08:37,825 INFO L175 Difference]: Start difference. First operand has 290 places, 354 transitions, 3671 flow. Second operand 24 states and 2931 transitions. [2022-11-18 21:08:37,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 701 transitions, 9832 flow [2022-11-18 21:08:39,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 701 transitions, 9689 flow, removed 49 selfloop flow, removed 6 redundant places. [2022-11-18 21:08:39,120 INFO L231 Difference]: Finished difference. Result has 307 places, 358 transitions, 3699 flow [2022-11-18 21:08:39,120 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=3612, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3699, PETRI_PLACES=307, PETRI_TRANSITIONS=358} [2022-11-18 21:08:39,121 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 169 predicate places. [2022-11-18 21:08:39,121 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 358 transitions, 3699 flow [2022-11-18 21:08:39,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 121.61111111111111) internal successors, (2189), 18 states have internal predecessors, (2189), 0 states have call successors, (0), 0 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 21:08:39,121 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:08:39,122 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] [2022-11-18 21:08:39,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 21:08:39,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:08:39,323 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-18 21:08:39,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:39,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1936167991, now seen corresponding path program 1 times [2022-11-18 21:08:39,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:39,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859994451] [2022-11-18 21:08:39,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:39,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:40,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:08:40,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:40,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859994451] [2022-11-18 21:08:40,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859994451] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:08:40,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147448618] [2022-11-18 21:08:40,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:40,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:08:40,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:08:40,313 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:08:40,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 21:08:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:40,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-18 21:08:40,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:08:40,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 21:08:41,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:08:41,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-18 21:08:42,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:08:42,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-18 21:08:42,401 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-18 21:08:42,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-11-18 21:08:42,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:08:42,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:08:43,565 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:08:43,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-18 21:08:43,580 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:08:43,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 76 [2022-11-18 21:08:43,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 48 [2022-11-18 21:08:43,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2022-11-18 21:08:45,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:08:45,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147448618] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:08:45,055 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:08:45,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 22, 22] total 58 [2022-11-18 21:08:45,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142051376] [2022-11-18 21:08:45,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:08:45,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-18 21:08:45,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:45,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-18 21:08:45,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=3179, Unknown=7, NotChecked=0, Total=3422 [2022-11-18 21:08:45,062 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 162 [2022-11-18 21:08:45,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 358 transitions, 3699 flow. Second operand has 59 states, 59 states have (on average 84.13559322033899) internal successors, (4964), 59 states have internal predecessors, (4964), 0 states have call successors, (0), 0 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 21:08:45,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:08:45,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 162 [2022-11-18 21:08:45,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:08:52,866 INFO L130 PetriNetUnfolder]: 6634/21316 cut-off events. [2022-11-18 21:08:52,866 INFO L131 PetriNetUnfolder]: For 193050/220333 co-relation queries the response was YES. [2022-11-18 21:08:53,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104969 conditions, 21316 events. 6634/21316 cut-off events. For 193050/220333 co-relation queries the response was YES. Maximal size of possible extension queue 599. Compared 249937 event pairs, 990 based on Foata normal form. 3961/24662 useless extension candidates. Maximal degree in co-relation 104631. Up to 8976 conditions per place. [2022-11-18 21:08:53,139 INFO L137 encePairwiseOnDemand]: 127/162 looper letters, 186 selfloop transitions, 125 changer transitions 1/389 dead transitions. [2022-11-18 21:08:53,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 389 transitions, 4567 flow [2022-11-18 21:08:53,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 21:08:53,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-18 21:08:53,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2754 transitions. [2022-11-18 21:08:53,145 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.53125 [2022-11-18 21:08:53,145 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2754 transitions. [2022-11-18 21:08:53,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2754 transitions. [2022-11-18 21:08:53,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:08:53,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2754 transitions. [2022-11-18 21:08:53,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 86.0625) internal successors, (2754), 32 states have internal predecessors, (2754), 0 states have call successors, (0), 0 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 21:08:53,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 162.0) internal successors, (5346), 33 states have internal predecessors, (5346), 0 states have call successors, (0), 0 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 21:08:53,158 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 162.0) internal successors, (5346), 33 states have internal predecessors, (5346), 0 states have call successors, (0), 0 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 21:08:53,158 INFO L175 Difference]: Start difference. First operand has 307 places, 358 transitions, 3699 flow. Second operand 32 states and 2754 transitions. [2022-11-18 21:08:53,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 389 transitions, 4567 flow [2022-11-18 21:08:55,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 389 transitions, 4503 flow, removed 2 selfloop flow, removed 18 redundant places. [2022-11-18 21:08:55,839 INFO L231 Difference]: Finished difference. Result has 322 places, 367 transitions, 4053 flow [2022-11-18 21:08:55,839 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=3635, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=4053, PETRI_PLACES=322, PETRI_TRANSITIONS=367} [2022-11-18 21:08:55,840 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 184 predicate places. [2022-11-18 21:08:55,840 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 367 transitions, 4053 flow [2022-11-18 21:08:55,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 84.13559322033899) internal successors, (4964), 59 states have internal predecessors, (4964), 0 states have call successors, (0), 0 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 21:08:55,841 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:08:55,841 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] [2022-11-18 21:08:55,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-18 21:08:56,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:08:56,042 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-18 21:08:56,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:56,042 INFO L85 PathProgramCache]: Analyzing trace with hash -606748517, now seen corresponding path program 2 times [2022-11-18 21:08:56,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:56,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247338094] [2022-11-18 21:08:56,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:56,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:57,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:08:57,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:57,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247338094] [2022-11-18 21:08:57,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247338094] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:08:57,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554926166] [2022-11-18 21:08:57,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:08:57,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:08:57,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:08:57,987 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:08:57,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-18 21:08:58,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 21:08:58,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:08:58,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 21:08:58,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:08:58,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-18 21:08:58,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:08:58,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:08:58,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554926166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:08:58,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:08:58,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [26] total 30 [2022-11-18 21:08:58,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24790292] [2022-11-18 21:08:58,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:08:58,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:08:58,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:58,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:08:58,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=842, Unknown=0, NotChecked=0, Total=930 [2022-11-18 21:08:58,319 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 162 [2022-11-18 21:08:58,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 367 transitions, 4053 flow. Second operand has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 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 21:08:58,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:08:58,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 162 [2022-11-18 21:08:58,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:05,447 INFO L130 PetriNetUnfolder]: 8254/24706 cut-off events. [2022-11-18 21:09:05,448 INFO L131 PetriNetUnfolder]: For 282501/317268 co-relation queries the response was YES. [2022-11-18 21:09:05,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135315 conditions, 24706 events. 8254/24706 cut-off events. For 282501/317268 co-relation queries the response was YES. Maximal size of possible extension queue 725. Compared 291292 event pairs, 2334 based on Foata normal form. 2849/26653 useless extension candidates. Maximal degree in co-relation 134945. Up to 12444 conditions per place. [2022-11-18 21:09:06,016 INFO L137 encePairwiseOnDemand]: 154/162 looper letters, 259 selfloop transitions, 59 changer transitions 0/448 dead transitions. [2022-11-18 21:09:06,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 448 transitions, 5865 flow [2022-11-18 21:09:06,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:09:06,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 21:09:06,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 758 transitions. [2022-11-18 21:09:06,018 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.779835390946502 [2022-11-18 21:09:06,018 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 758 transitions. [2022-11-18 21:09:06,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 758 transitions. [2022-11-18 21:09:06,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:06,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 758 transitions. [2022-11-18 21:09:06,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 126.33333333333333) internal successors, (758), 6 states have internal predecessors, (758), 0 states have call successors, (0), 0 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 21:09:06,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 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 21:09:06,022 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 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 21:09:06,022 INFO L175 Difference]: Start difference. First operand has 322 places, 367 transitions, 4053 flow. Second operand 6 states and 758 transitions. [2022-11-18 21:09:06,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 448 transitions, 5865 flow [2022-11-18 21:09:10,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 448 transitions, 5765 flow, removed 12 selfloop flow, removed 26 redundant places. [2022-11-18 21:09:10,812 INFO L231 Difference]: Finished difference. Result has 304 places, 380 transitions, 4414 flow [2022-11-18 21:09:10,813 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=3960, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4414, PETRI_PLACES=304, PETRI_TRANSITIONS=380} [2022-11-18 21:09:10,813 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 166 predicate places. [2022-11-18 21:09:10,813 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 380 transitions, 4414 flow [2022-11-18 21:09:10,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 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 21:09:10,814 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:10,814 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] [2022-11-18 21:09:10,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-18 21:09:11,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:11,014 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-18 21:09:11,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:11,015 INFO L85 PathProgramCache]: Analyzing trace with hash 339981587, now seen corresponding path program 1 times [2022-11-18 21:09:11,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:11,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987140893] [2022-11-18 21:09:11,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:11,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:11,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:11,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:11,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987140893] [2022-11-18 21:09:11,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987140893] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:09:11,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934275912] [2022-11-18 21:09:11,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:11,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:11,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:11,759 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:09:11,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-18 21:09:11,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:11,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-18 21:09:11,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:09:12,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 21:09:13,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:09:13,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-18 21:09:13,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:09:13,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-18 21:09:13,769 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-18 21:09:13,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2022-11-18 21:09:13,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:13,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:09:14,890 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:09:14,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2022-11-18 21:09:14,904 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:09:14,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 174 treesize of output 162 [2022-11-18 21:09:14,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 61 [2022-11-18 21:09:14,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 110 [2022-11-18 21:09:16,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:16,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934275912] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:09:16,407 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:09:16,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 22, 22] total 58 [2022-11-18 21:09:16,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098697542] [2022-11-18 21:09:16,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:09:16,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-18 21:09:16,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:16,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-18 21:09:16,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=3182, Unknown=3, NotChecked=0, Total=3422 [2022-11-18 21:09:16,412 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 162 [2022-11-18 21:09:16,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 380 transitions, 4414 flow. Second operand has 59 states, 59 states have (on average 84.1864406779661) internal successors, (4967), 59 states have internal predecessors, (4967), 0 states have call successors, (0), 0 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 21:09:16,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:16,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 162 [2022-11-18 21:09:16,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:26,332 INFO L130 PetriNetUnfolder]: 8233/25721 cut-off events. [2022-11-18 21:09:26,333 INFO L131 PetriNetUnfolder]: For 289919/320598 co-relation queries the response was YES. [2022-11-18 21:09:26,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140193 conditions, 25721 events. 8233/25721 cut-off events. For 289919/320598 co-relation queries the response was YES. Maximal size of possible extension queue 736. Compared 310667 event pairs, 1265 based on Foata normal form. 4577/29513 useless extension candidates. Maximal degree in co-relation 139838. Up to 10605 conditions per place. [2022-11-18 21:09:26,608 INFO L137 encePairwiseOnDemand]: 128/162 looper letters, 158 selfloop transitions, 171 changer transitions 2/408 dead transitions. [2022-11-18 21:09:26,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 408 transitions, 5313 flow [2022-11-18 21:09:26,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 21:09:26,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 21:09:26,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 2922 transitions. [2022-11-18 21:09:26,614 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5305010893246187 [2022-11-18 21:09:26,614 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 2922 transitions. [2022-11-18 21:09:26,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 2922 transitions. [2022-11-18 21:09:26,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:26,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 2922 transitions. [2022-11-18 21:09:26,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 85.94117647058823) internal successors, (2922), 34 states have internal predecessors, (2922), 0 states have call successors, (0), 0 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 21:09:26,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 162.0) internal successors, (5670), 35 states have internal predecessors, (5670), 0 states have call successors, (0), 0 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 21:09:26,628 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 162.0) internal successors, (5670), 35 states have internal predecessors, (5670), 0 states have call successors, (0), 0 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 21:09:26,629 INFO L175 Difference]: Start difference. First operand has 304 places, 380 transitions, 4414 flow. Second operand 34 states and 2922 transitions. [2022-11-18 21:09:26,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 408 transitions, 5313 flow [2022-11-18 21:09:30,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 408 transitions, 5198 flow, removed 27 selfloop flow, removed 2 redundant places. [2022-11-18 21:09:30,818 INFO L231 Difference]: Finished difference. Result has 339 places, 387 transitions, 4897 flow [2022-11-18 21:09:30,818 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=4302, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=4897, PETRI_PLACES=339, PETRI_TRANSITIONS=387} [2022-11-18 21:09:30,819 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 201 predicate places. [2022-11-18 21:09:30,819 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 387 transitions, 4897 flow [2022-11-18 21:09:30,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 84.1864406779661) internal successors, (4967), 59 states have internal predecessors, (4967), 0 states have call successors, (0), 0 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 21:09:30,819 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:30,819 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] [2022-11-18 21:09:30,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-18 21:09:31,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-18 21:09:31,020 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-18 21:09:31,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:31,021 INFO L85 PathProgramCache]: Analyzing trace with hash -317920125, now seen corresponding path program 3 times [2022-11-18 21:09:31,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:31,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322971690] [2022-11-18 21:09:31,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:31,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:31,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:31,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:31,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322971690] [2022-11-18 21:09:31,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322971690] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:09:31,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987050510] [2022-11-18 21:09:31,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 21:09:31,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:31,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:31,725 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:09:31,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d7c68a-1228-433f-977d-3b3d769fb88f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-18 21:09:31,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 21:09:31,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:09:31,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 21:09:31,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:09:32,120 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-18 21:09:32,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-11-18 21:09:32,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:09:32,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:09:32,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987050510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:09:32,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:09:32,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2022-11-18 21:09:32,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262215708] [2022-11-18 21:09:32,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:32,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:09:32,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:32,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:09:32,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-11-18 21:09:32,147 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 162 [2022-11-18 21:09:32,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 387 transitions, 4897 flow. Second operand has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 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 21:09:32,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:32,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 162 [2022-11-18 21:09:32,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand