./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 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_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a --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 0d8799100fd609ab67add98408724f155026fd97a78e0a4112bb89c435f95463 --- 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-b5237d8 [2022-11-21 17:20:13,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:20:13,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:20:13,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:20:13,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:20:13,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:20:13,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:20:13,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:20:13,416 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:20:13,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:20:13,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:20:13,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:20:13,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:20:13,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:20:13,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:20:13,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:20:13,423 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:20:13,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:20:13,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:20:13,427 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:20:13,429 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:20:13,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:20:13,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:20:13,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:20:13,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:20:13,436 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:20:13,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:20:13,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:20:13,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:20:13,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:20:13,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:20:13,440 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:20:13,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:20:13,442 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:20:13,443 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:20:13,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:20:13,444 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:20:13,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:20:13,445 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:20:13,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:20:13,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:20:13,447 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 17:20:13,490 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:20:13,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:20:13,492 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:20:13,492 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:20:13,493 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:20:13,493 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:20:13,494 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:20:13,494 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:20:13,494 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:20:13,494 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:20:13,494 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:20:13,494 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 17:20:13,494 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:20:13,495 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:20:13,495 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:20:13,495 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:20:13,495 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:20:13,495 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:20:13,495 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 17:20:13,496 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:20:13,496 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:20:13,496 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:20:13,496 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:20:13,496 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:20:13,496 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:20:13,497 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:20:13,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:20:13,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:20:13,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:20:13,497 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:20:13,497 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:20:13,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:20:13,498 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:20:13,498 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:20:13,498 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:20:13,498 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_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d8799100fd609ab67add98408724f155026fd97a78e0a4112bb89c435f95463 [2022-11-21 17:20:13,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:20:13,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:20:13,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:20:13,821 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:20:13,821 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:20:13,823 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2022-11-21 17:20:17,011 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:20:17,216 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:20:17,217 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2022-11-21 17:20:17,224 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/data/19280b47d/452b66072844449db4353b050202858c/FLAGcbc0cddc9 [2022-11-21 17:20:17,238 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/data/19280b47d/452b66072844449db4353b050202858c [2022-11-21 17:20:17,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:20:17,242 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:20:17,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:20:17,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:20:17,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:20:17,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:20:17" (1/1) ... [2022-11-21 17:20:17,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32022ba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:17, skipping insertion in model container [2022-11-21 17:20:17,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:20:17" (1/1) ... [2022-11-21 17:20:17,266 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:20:17,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:20:17,563 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c[2486,2499] [2022-11-21 17:20:17,572 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:20:17,584 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:20:17,629 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c[2486,2499] [2022-11-21 17:20:17,632 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:20:17,647 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:20:17,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:17 WrapperNode [2022-11-21 17:20:17,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:20:17,649 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:20:17,649 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:20:17,649 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:20:17,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:17" (1/1) ... [2022-11-21 17:20:17,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:17" (1/1) ... [2022-11-21 17:20:17,715 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 106 [2022-11-21 17:20:17,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:20:17,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:20:17,718 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:20:17,718 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:20:17,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:17" (1/1) ... [2022-11-21 17:20:17,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:17" (1/1) ... [2022-11-21 17:20:17,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:17" (1/1) ... [2022-11-21 17:20:17,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:17" (1/1) ... [2022-11-21 17:20:17,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:17" (1/1) ... [2022-11-21 17:20:17,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:17" (1/1) ... [2022-11-21 17:20:17,756 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:17" (1/1) ... [2022-11-21 17:20:17,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:17" (1/1) ... [2022-11-21 17:20:17,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:20:17,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:20:17,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:20:17,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:20:17,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:17" (1/1) ... [2022-11-21 17:20:17,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:20:17,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:20:17,811 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:20:17,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:20:17,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:20:17,863 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 17:20:17,864 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 17:20:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 17:20:17,864 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 17:20:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-21 17:20:17,864 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-21 17:20:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:20:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 17:20:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 17:20:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 17:20:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 17:20:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 17:20:17,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:20:17,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:20:17,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 17:20:17,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 17:20:17,868 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 17:20:17,977 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:20:17,979 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:20:18,348 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:20:18,432 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:20:18,432 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-21 17:20:18,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:20:18 BoogieIcfgContainer [2022-11-21 17:20:18,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:20:18,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:20:18,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:20:18,453 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:20:18,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:20:17" (1/3) ... [2022-11-21 17:20:18,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f2ca60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:20:18, skipping insertion in model container [2022-11-21 17:20:18,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:17" (2/3) ... [2022-11-21 17:20:18,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f2ca60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:20:18, skipping insertion in model container [2022-11-21 17:20:18,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:20:18" (3/3) ... [2022-11-21 17:20:18,456 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2022-11-21 17:20:18,465 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 17:20:18,473 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:20:18,473 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-21 17:20:18,473 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 17:20:18,554 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-21 17:20:18,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 160 transitions, 344 flow [2022-11-21 17:20:18,718 INFO L130 PetriNetUnfolder]: 10/157 cut-off events. [2022-11-21 17:20:18,719 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-21 17:20:18,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 157 events. 10/157 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 109 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 127. Up to 2 conditions per place. [2022-11-21 17:20:18,725 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 160 transitions, 344 flow [2022-11-21 17:20:18,731 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 133 transitions, 278 flow [2022-11-21 17:20:18,742 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:20:18,749 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;@3b6cfbe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:20:18,749 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-21 17:20:18,768 INFO L130 PetriNetUnfolder]: 3/59 cut-off events. [2022-11-21 17:20:18,768 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 17:20:18,768 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:20:18,769 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] [2022-11-21 17:20:18,770 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-21 17:20:18,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:18,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1206568422, now seen corresponding path program 1 times [2022-11-21 17:20:18,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:18,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563019237] [2022-11-21 17:20:18,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:18,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:19,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:20:19,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:19,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563019237] [2022-11-21 17:20:19,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563019237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:20:19,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:20:19,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:20:19,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105795780] [2022-11-21 17:20:19,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:20:19,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:20:19,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:19,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:20:19,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:20:19,361 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 160 [2022-11-21 17:20:19,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 133 transitions, 278 flow. Second operand has 4 states, 4 states have (on average 133.5) internal successors, (534), 4 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:19,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:20:19,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 160 [2022-11-21 17:20:19,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:20:19,669 INFO L130 PetriNetUnfolder]: 37/382 cut-off events. [2022-11-21 17:20:19,670 INFO L131 PetriNetUnfolder]: For 40/42 co-relation queries the response was YES. [2022-11-21 17:20:19,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 382 events. 37/382 cut-off events. For 40/42 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1420 event pairs, 14 based on Foata normal form. 36/350 useless extension candidates. Maximal degree in co-relation 294. Up to 41 conditions per place. [2022-11-21 17:20:19,681 INFO L137 encePairwiseOnDemand]: 148/160 looper letters, 28 selfloop transitions, 4 changer transitions 3/141 dead transitions. [2022-11-21 17:20:19,681 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 141 transitions, 370 flow [2022-11-21 17:20:19,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:20:19,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:20:19,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 704 transitions. [2022-11-21 17:20:19,708 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.88 [2022-11-21 17:20:19,709 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 704 transitions. [2022-11-21 17:20:19,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 704 transitions. [2022-11-21 17:20:19,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:20:19,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 704 transitions. [2022-11-21 17:20:19,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 140.8) internal successors, (704), 5 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:19,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:19,739 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:19,741 INFO L175 Difference]: Start difference. First operand has 134 places, 133 transitions, 278 flow. Second operand 5 states and 704 transitions. [2022-11-21 17:20:19,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 141 transitions, 370 flow [2022-11-21 17:20:19,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 141 transitions, 358 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 17:20:19,751 INFO L231 Difference]: Finished difference. Result has 137 places, 127 transitions, 284 flow [2022-11-21 17:20:19,753 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=284, PETRI_PLACES=137, PETRI_TRANSITIONS=127} [2022-11-21 17:20:19,757 INFO L288 CegarLoopForPetriNet]: 134 programPoint places, 3 predicate places. [2022-11-21 17:20:19,758 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 127 transitions, 284 flow [2022-11-21 17:20:19,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 133.5) internal successors, (534), 4 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:19,758 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:20:19,759 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] [2022-11-21 17:20:19,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:20:19,760 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-21 17:20:19,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:19,761 INFO L85 PathProgramCache]: Analyzing trace with hash -563421055, now seen corresponding path program 1 times [2022-11-21 17:20:19,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:19,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583910557] [2022-11-21 17:20:19,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:19,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:19,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:19,963 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:20:19,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:19,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583910557] [2022-11-21 17:20:19,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583910557] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:20:19,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229718639] [2022-11-21 17:20:19,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:19,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:20:19,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:20:19,971 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:20:19,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 17:20:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:20,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 17:20:20,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:20:20,169 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:20:20,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:20:20,239 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:20:20,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229718639] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:20:20,239 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:20:20,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-21 17:20:20,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821339586] [2022-11-21 17:20:20,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:20:20,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 17:20:20,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:20,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 17:20:20,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:20:20,246 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 160 [2022-11-21 17:20:20,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 127 transitions, 284 flow. Second operand has 12 states, 12 states have (on average 134.66666666666666) internal successors, (1616), 12 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:20,249 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:20:20,249 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 160 [2022-11-21 17:20:20,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:20:20,745 INFO L130 PetriNetUnfolder]: 91/878 cut-off events. [2022-11-21 17:20:20,745 INFO L131 PetriNetUnfolder]: For 31/36 co-relation queries the response was YES. [2022-11-21 17:20:20,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1158 conditions, 878 events. 91/878 cut-off events. For 31/36 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4792 event pairs, 35 based on Foata normal form. 3/726 useless extension candidates. Maximal degree in co-relation 884. Up to 45 conditions per place. [2022-11-21 17:20:20,754 INFO L137 encePairwiseOnDemand]: 153/160 looper letters, 58 selfloop transitions, 18 changer transitions 0/182 dead transitions. [2022-11-21 17:20:20,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 182 transitions, 592 flow [2022-11-21 17:20:20,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 17:20:20,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 17:20:20,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2455 transitions. [2022-11-21 17:20:20,762 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8524305555555556 [2022-11-21 17:20:20,762 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2455 transitions. [2022-11-21 17:20:20,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2455 transitions. [2022-11-21 17:20:20,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:20:20,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2455 transitions. [2022-11-21 17:20:20,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 136.38888888888889) internal successors, (2455), 18 states have internal predecessors, (2455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:20,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 160.0) internal successors, (3040), 19 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:20,780 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 160.0) internal successors, (3040), 19 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:20,780 INFO L175 Difference]: Start difference. First operand has 137 places, 127 transitions, 284 flow. Second operand 18 states and 2455 transitions. [2022-11-21 17:20:20,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 182 transitions, 592 flow [2022-11-21 17:20:20,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 182 transitions, 590 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:20:20,789 INFO L231 Difference]: Finished difference. Result has 154 places, 139 transitions, 388 flow [2022-11-21 17:20:20,789 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=388, PETRI_PLACES=154, PETRI_TRANSITIONS=139} [2022-11-21 17:20:20,790 INFO L288 CegarLoopForPetriNet]: 134 programPoint places, 20 predicate places. [2022-11-21 17:20:20,790 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 139 transitions, 388 flow [2022-11-21 17:20:20,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 134.66666666666666) internal successors, (1616), 12 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:20,793 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:20:20,793 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] [2022-11-21 17:20:20,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 17:20:21,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:20:21,009 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-21 17:20:21,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:21,010 INFO L85 PathProgramCache]: Analyzing trace with hash -286183228, now seen corresponding path program 1 times [2022-11-21 17:20:21,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:21,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507274842] [2022-11-21 17:20:21,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:21,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:21,221 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:20:21,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:21,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507274842] [2022-11-21 17:20:21,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507274842] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:20:21,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324968074] [2022-11-21 17:20:21,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:21,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:20:21,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:20:21,225 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:20:21,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 17:20:21,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:21,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 17:20:21,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:20:21,388 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:20:21,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:20:21,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324968074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:20:21,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:20:21,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 17:20:21,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344201990] [2022-11-21 17:20:21,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:20:21,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:20:21,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:21,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:20:21,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:20:21,393 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 160 [2022-11-21 17:20:21,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 139 transitions, 388 flow. Second operand has 6 states, 6 states have (on average 134.33333333333334) internal successors, (806), 6 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:21,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:20:21,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 160 [2022-11-21 17:20:21,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:20:21,641 INFO L130 PetriNetUnfolder]: 91/874 cut-off events. [2022-11-21 17:20:21,642 INFO L131 PetriNetUnfolder]: For 67/72 co-relation queries the response was YES. [2022-11-21 17:20:21,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1176 conditions, 874 events. 91/874 cut-off events. For 67/72 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4772 event pairs, 35 based on Foata normal form. 4/723 useless extension candidates. Maximal degree in co-relation 924. Up to 128 conditions per place. [2022-11-21 17:20:21,674 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 29 selfloop transitions, 11 changer transitions 0/146 dead transitions. [2022-11-21 17:20:21,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 146 transitions, 471 flow [2022-11-21 17:20:21,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:20:21,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 17:20:21,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 956 transitions. [2022-11-21 17:20:21,678 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8535714285714285 [2022-11-21 17:20:21,678 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 956 transitions. [2022-11-21 17:20:21,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 956 transitions. [2022-11-21 17:20:21,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:20:21,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 956 transitions. [2022-11-21 17:20:21,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 136.57142857142858) internal successors, (956), 7 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:21,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:21,687 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:21,687 INFO L175 Difference]: Start difference. First operand has 154 places, 139 transitions, 388 flow. Second operand 7 states and 956 transitions. [2022-11-21 17:20:21,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 146 transitions, 471 flow [2022-11-21 17:20:21,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 146 transitions, 439 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-21 17:20:21,696 INFO L231 Difference]: Finished difference. Result has 150 places, 135 transitions, 351 flow [2022-11-21 17:20:21,697 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=351, PETRI_PLACES=150, PETRI_TRANSITIONS=135} [2022-11-21 17:20:21,698 INFO L288 CegarLoopForPetriNet]: 134 programPoint places, 16 predicate places. [2022-11-21 17:20:21,699 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 135 transitions, 351 flow [2022-11-21 17:20:21,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.33333333333334) internal successors, (806), 6 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:21,699 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:20:21,699 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] [2022-11-21 17:20:21,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 17:20:21,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:20:21,906 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-21 17:20:21,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:21,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1013773231, now seen corresponding path program 1 times [2022-11-21 17:20:21,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:21,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410974838] [2022-11-21 17:20:21,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:21,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:22,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:20:22,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:22,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410974838] [2022-11-21 17:20:22,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410974838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:20:22,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:20:22,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:20:22,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43210540] [2022-11-21 17:20:22,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:20:22,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:20:22,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:22,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:20:22,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:20:22,064 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 160 [2022-11-21 17:20:22,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 135 transitions, 351 flow. Second operand has 4 states, 4 states have (on average 135.5) internal successors, (542), 4 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:22,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:20:22,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 160 [2022-11-21 17:20:22,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:20:22,519 INFO L130 PetriNetUnfolder]: 691/2049 cut-off events. [2022-11-21 17:20:22,519 INFO L131 PetriNetUnfolder]: For 42/67 co-relation queries the response was YES. [2022-11-21 17:20:22,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3853 conditions, 2049 events. 691/2049 cut-off events. For 42/67 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 14622 event pairs, 125 based on Foata normal form. 5/1714 useless extension candidates. Maximal degree in co-relation 3072. Up to 681 conditions per place. [2022-11-21 17:20:22,537 INFO L137 encePairwiseOnDemand]: 154/160 looper letters, 30 selfloop transitions, 4 changer transitions 0/153 dead transitions. [2022-11-21 17:20:22,537 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 153 transitions, 468 flow [2022-11-21 17:20:22,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:20:22,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:20:22,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 706 transitions. [2022-11-21 17:20:22,540 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8825 [2022-11-21 17:20:22,540 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 706 transitions. [2022-11-21 17:20:22,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 706 transitions. [2022-11-21 17:20:22,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:20:22,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 706 transitions. [2022-11-21 17:20:22,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 141.2) internal successors, (706), 5 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:22,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:22,546 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:22,546 INFO L175 Difference]: Start difference. First operand has 150 places, 135 transitions, 351 flow. Second operand 5 states and 706 transitions. [2022-11-21 17:20:22,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 153 transitions, 468 flow [2022-11-21 17:20:22,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 153 transitions, 454 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 17:20:22,552 INFO L231 Difference]: Finished difference. Result has 152 places, 138 transitions, 367 flow [2022-11-21 17:20:22,552 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=367, PETRI_PLACES=152, PETRI_TRANSITIONS=138} [2022-11-21 17:20:22,553 INFO L288 CegarLoopForPetriNet]: 134 programPoint places, 18 predicate places. [2022-11-21 17:20:22,553 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 138 transitions, 367 flow [2022-11-21 17:20:22,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 135.5) internal successors, (542), 4 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:22,554 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:20:22,554 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] [2022-11-21 17:20:22,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:20:22,554 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-21 17:20:22,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:22,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1793086727, now seen corresponding path program 1 times [2022-11-21 17:20:22,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:22,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114894353] [2022-11-21 17:20:22,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:22,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:22,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:20:22,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:22,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114894353] [2022-11-21 17:20:22,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114894353] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:20:22,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:20:22,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:20:22,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351253438] [2022-11-21 17:20:22,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:20:22,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:20:22,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:22,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:20:22,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:20:22,641 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 160 [2022-11-21 17:20:22,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 138 transitions, 367 flow. Second operand has 4 states, 4 states have (on average 135.75) internal successors, (543), 4 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:22,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:20:22,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 160 [2022-11-21 17:20:22,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:20:23,272 INFO L130 PetriNetUnfolder]: 886/2774 cut-off events. [2022-11-21 17:20:23,272 INFO L131 PetriNetUnfolder]: For 242/247 co-relation queries the response was YES. [2022-11-21 17:20:23,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5239 conditions, 2774 events. 886/2774 cut-off events. For 242/247 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 24007 event pairs, 435 based on Foata normal form. 0/2484 useless extension candidates. Maximal degree in co-relation 4179. Up to 966 conditions per place. [2022-11-21 17:20:23,298 INFO L137 encePairwiseOnDemand]: 154/160 looper letters, 29 selfloop transitions, 4 changer transitions 0/155 dead transitions. [2022-11-21 17:20:23,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 155 transitions, 476 flow [2022-11-21 17:20:23,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:20:23,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:20:23,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 705 transitions. [2022-11-21 17:20:23,301 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.88125 [2022-11-21 17:20:23,301 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 705 transitions. [2022-11-21 17:20:23,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 705 transitions. [2022-11-21 17:20:23,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:20:23,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 705 transitions. [2022-11-21 17:20:23,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:23,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:23,308 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:23,308 INFO L175 Difference]: Start difference. First operand has 152 places, 138 transitions, 367 flow. Second operand 5 states and 705 transitions. [2022-11-21 17:20:23,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 155 transitions, 476 flow [2022-11-21 17:20:23,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 155 transitions, 474 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:20:23,315 INFO L231 Difference]: Finished difference. Result has 158 places, 141 transitions, 395 flow [2022-11-21 17:20:23,315 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=395, PETRI_PLACES=158, PETRI_TRANSITIONS=141} [2022-11-21 17:20:23,318 INFO L288 CegarLoopForPetriNet]: 134 programPoint places, 24 predicate places. [2022-11-21 17:20:23,318 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 141 transitions, 395 flow [2022-11-21 17:20:23,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 135.75) internal successors, (543), 4 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:23,319 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:20:23,319 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:20:23,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 17:20:23,319 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-21 17:20:23,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:23,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1590183433, now seen corresponding path program 1 times [2022-11-21 17:20:23,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:23,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804004499] [2022-11-21 17:20:23,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:23,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:23,486 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:20:23,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:23,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804004499] [2022-11-21 17:20:23,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804004499] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:20:23,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540073700] [2022-11-21 17:20:23,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:23,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:20:23,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:20:23,491 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:20:23,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 17:20:23,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:23,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 17:20:23,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:20:23,737 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:20:23,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:20:23,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540073700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:20:23,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:20:23,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-21 17:20:23,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452576070] [2022-11-21 17:20:23,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:20:23,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:20:23,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:23,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:20:23,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:20:23,745 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 160 [2022-11-21 17:20:23,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 141 transitions, 395 flow. Second operand has 7 states, 7 states have (on average 124.57142857142857) internal successors, (872), 7 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:23,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:20:23,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 160 [2022-11-21 17:20:23,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:20:24,693 INFO L130 PetriNetUnfolder]: 1195/4059 cut-off events. [2022-11-21 17:20:24,693 INFO L131 PetriNetUnfolder]: For 774/774 co-relation queries the response was YES. [2022-11-21 17:20:24,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8509 conditions, 4059 events. 1195/4059 cut-off events. For 774/774 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 36044 event pairs, 958 based on Foata normal form. 0/3551 useless extension candidates. Maximal degree in co-relation 8008. Up to 1837 conditions per place. [2022-11-21 17:20:24,726 INFO L137 encePairwiseOnDemand]: 151/160 looper letters, 46 selfloop transitions, 8 changer transitions 2/159 dead transitions. [2022-11-21 17:20:24,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 159 transitions, 555 flow [2022-11-21 17:20:24,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 17:20:24,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 17:20:24,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1025 transitions. [2022-11-21 17:20:24,730 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.80078125 [2022-11-21 17:20:24,730 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1025 transitions. [2022-11-21 17:20:24,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1025 transitions. [2022-11-21 17:20:24,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:20:24,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1025 transitions. [2022-11-21 17:20:24,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.125) internal successors, (1025), 8 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:24,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 160.0) internal successors, (1440), 9 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:24,737 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 160.0) internal successors, (1440), 9 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:24,738 INFO L175 Difference]: Start difference. First operand has 158 places, 141 transitions, 395 flow. Second operand 8 states and 1025 transitions. [2022-11-21 17:20:24,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 159 transitions, 555 flow [2022-11-21 17:20:24,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 159 transitions, 553 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:20:24,748 INFO L231 Difference]: Finished difference. Result has 167 places, 143 transitions, 427 flow [2022-11-21 17:20:24,748 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=427, PETRI_PLACES=167, PETRI_TRANSITIONS=143} [2022-11-21 17:20:24,749 INFO L288 CegarLoopForPetriNet]: 134 programPoint places, 33 predicate places. [2022-11-21 17:20:24,749 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 143 transitions, 427 flow [2022-11-21 17:20:24,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 124.57142857142857) internal successors, (872), 7 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:24,750 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:20:24,750 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:20:24,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 17:20:24,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-21 17:20:24,959 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-21 17:20:24,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:24,960 INFO L85 PathProgramCache]: Analyzing trace with hash 444222767, now seen corresponding path program 1 times [2022-11-21 17:20:24,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:24,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397126104] [2022-11-21 17:20:24,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:24,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:25,085 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:20:25,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:25,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397126104] [2022-11-21 17:20:25,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397126104] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:20:25,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483758112] [2022-11-21 17:20:25,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:25,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:20:25,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:20:25,088 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:20:25,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 17:20:25,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:25,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 17:20:25,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:20:25,362 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:20:25,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:20:25,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483758112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:20:25,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:20:25,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-21 17:20:25,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780957142] [2022-11-21 17:20:25,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:20:25,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:20:25,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:25,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:20:25,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:20:25,382 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 160 [2022-11-21 17:20:25,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 143 transitions, 427 flow. Second operand has 7 states, 7 states have (on average 124.71428571428571) internal successors, (873), 7 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:25,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:20:25,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 160 [2022-11-21 17:20:25,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:20:26,137 INFO L130 PetriNetUnfolder]: 1061/3084 cut-off events. [2022-11-21 17:20:26,138 INFO L131 PetriNetUnfolder]: For 764/770 co-relation queries the response was YES. [2022-11-21 17:20:26,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6773 conditions, 3084 events. 1061/3084 cut-off events. For 764/770 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 25382 event pairs, 977 based on Foata normal form. 6/2796 useless extension candidates. Maximal degree in co-relation 6521. Up to 1797 conditions per place. [2022-11-21 17:20:26,167 INFO L137 encePairwiseOnDemand]: 151/160 looper letters, 34 selfloop transitions, 6 changer transitions 13/156 dead transitions. [2022-11-21 17:20:26,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 156 transitions, 568 flow [2022-11-21 17:20:26,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 17:20:26,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 17:20:26,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1021 transitions. [2022-11-21 17:20:26,172 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.79765625 [2022-11-21 17:20:26,172 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1021 transitions. [2022-11-21 17:20:26,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1021 transitions. [2022-11-21 17:20:26,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:20:26,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1021 transitions. [2022-11-21 17:20:26,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 127.625) internal successors, (1021), 8 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:26,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 160.0) internal successors, (1440), 9 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:26,184 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 160.0) internal successors, (1440), 9 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:26,184 INFO L175 Difference]: Start difference. First operand has 167 places, 143 transitions, 427 flow. Second operand 8 states and 1021 transitions. [2022-11-21 17:20:26,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 156 transitions, 568 flow [2022-11-21 17:20:26,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 156 transitions, 558 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 17:20:26,195 INFO L231 Difference]: Finished difference. Result has 172 places, 141 transitions, 419 flow [2022-11-21 17:20:26,195 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=419, PETRI_PLACES=172, PETRI_TRANSITIONS=141} [2022-11-21 17:20:26,196 INFO L288 CegarLoopForPetriNet]: 134 programPoint places, 38 predicate places. [2022-11-21 17:20:26,196 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 141 transitions, 419 flow [2022-11-21 17:20:26,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 124.71428571428571) internal successors, (873), 7 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:26,197 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:20:26,197 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] [2022-11-21 17:20:26,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 17:20:26,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-21 17:20:26,405 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-21 17:20:26,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:26,406 INFO L85 PathProgramCache]: Analyzing trace with hash 591751846, now seen corresponding path program 2 times [2022-11-21 17:20:26,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:26,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860696716] [2022-11-21 17:20:26,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:26,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:26,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:26,698 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:20:26,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:26,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860696716] [2022-11-21 17:20:26,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860696716] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:20:26,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148670214] [2022-11-21 17:20:26,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:20:26,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:20:26,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:20:26,705 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:20:26,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 17:20:26,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 17:20:26,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:20:26,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 17:20:26,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:20:26,989 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-21 17:20:26,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:20:27,175 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-21 17:20:27,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148670214] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:20:27,178 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:20:27,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-21 17:20:27,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954290850] [2022-11-21 17:20:27,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:20:27,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 17:20:27,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:27,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 17:20:27,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-21 17:20:27,184 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 160 [2022-11-21 17:20:27,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 141 transitions, 419 flow. Second operand has 18 states, 18 states have (on average 120.61111111111111) internal successors, (2171), 18 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:27,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:20:27,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 160 [2022-11-21 17:20:27,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:20:28,504 INFO L130 PetriNetUnfolder]: 955/3843 cut-off events. [2022-11-21 17:20:28,504 INFO L131 PetriNetUnfolder]: For 770/770 co-relation queries the response was YES. [2022-11-21 17:20:28,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7857 conditions, 3843 events. 955/3843 cut-off events. For 770/770 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 34476 event pairs, 828 based on Foata normal form. 2/3695 useless extension candidates. Maximal degree in co-relation 7754. Up to 385 conditions per place. [2022-11-21 17:20:28,536 INFO L137 encePairwiseOnDemand]: 149/160 looper letters, 102 selfloop transitions, 25 changer transitions 0/224 dead transitions. [2022-11-21 17:20:28,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 224 transitions, 913 flow [2022-11-21 17:20:28,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-21 17:20:28,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-21 17:20:28,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2937 transitions. [2022-11-21 17:20:28,544 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.76484375 [2022-11-21 17:20:28,616 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2937 transitions. [2022-11-21 17:20:28,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2937 transitions. [2022-11-21 17:20:28,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:20:28,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2937 transitions. [2022-11-21 17:20:28,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 122.375) internal successors, (2937), 24 states have internal predecessors, (2937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:28,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 160.0) internal successors, (4000), 25 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:28,638 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 160.0) internal successors, (4000), 25 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:28,638 INFO L175 Difference]: Start difference. First operand has 172 places, 141 transitions, 419 flow. Second operand 24 states and 2937 transitions. [2022-11-21 17:20:28,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 224 transitions, 913 flow [2022-11-21 17:20:28,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 224 transitions, 863 flow, removed 14 selfloop flow, removed 14 redundant places. [2022-11-21 17:20:28,653 INFO L231 Difference]: Finished difference. Result has 177 places, 145 transitions, 458 flow [2022-11-21 17:20:28,653 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=458, PETRI_PLACES=177, PETRI_TRANSITIONS=145} [2022-11-21 17:20:28,654 INFO L288 CegarLoopForPetriNet]: 134 programPoint places, 43 predicate places. [2022-11-21 17:20:28,654 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 145 transitions, 458 flow [2022-11-21 17:20:28,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 120.61111111111111) internal successors, (2171), 18 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:28,655 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:20:28,656 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:20:28,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 17:20:28,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:20:28,861 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-21 17:20:28,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:28,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1440528932, now seen corresponding path program 1 times [2022-11-21 17:20:28,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:28,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901429323] [2022-11-21 17:20:28,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:28,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:29,005 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:20:29,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:29,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901429323] [2022-11-21 17:20:29,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901429323] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:20:29,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000845135] [2022-11-21 17:20:29,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:29,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:20:29,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:20:29,008 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:20:29,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 17:20:29,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:29,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 17:20:29,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:20:29,393 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:20:29,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:20:29,755 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:20:29,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000845135] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:20:29,756 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:20:29,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-11-21 17:20:29,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799991281] [2022-11-21 17:20:29,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:20:29,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-21 17:20:29,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:29,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-21 17:20:29,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-21 17:20:29,762 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 160 [2022-11-21 17:20:29,766 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 145 transitions, 458 flow. Second operand has 23 states, 23 states have (on average 115.65217391304348) internal successors, (2660), 23 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:29,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:20:29,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 160 [2022-11-21 17:20:29,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:20:32,157 INFO L130 PetriNetUnfolder]: 3170/7698 cut-off events. [2022-11-21 17:20:32,158 INFO L131 PetriNetUnfolder]: For 664/769 co-relation queries the response was YES. [2022-11-21 17:20:32,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17555 conditions, 7698 events. 3170/7698 cut-off events. For 664/769 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 69321 event pairs, 1019 based on Foata normal form. 110/6713 useless extension candidates. Maximal degree in co-relation 9987. Up to 1604 conditions per place. [2022-11-21 17:20:32,210 INFO L137 encePairwiseOnDemand]: 142/160 looper letters, 129 selfloop transitions, 32 changer transitions 9/259 dead transitions. [2022-11-21 17:20:32,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 259 transitions, 1121 flow [2022-11-21 17:20:32,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-21 17:20:32,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-21 17:20:32,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2960 transitions. [2022-11-21 17:20:32,218 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.74 [2022-11-21 17:20:32,218 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2960 transitions. [2022-11-21 17:20:32,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2960 transitions. [2022-11-21 17:20:32,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:20:32,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2960 transitions. [2022-11-21 17:20:32,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 118.4) internal successors, (2960), 25 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:32,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 160.0) internal successors, (4160), 26 states have internal predecessors, (4160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:32,238 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 160.0) internal successors, (4160), 26 states have internal predecessors, (4160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:32,238 INFO L175 Difference]: Start difference. First operand has 177 places, 145 transitions, 458 flow. Second operand 25 states and 2960 transitions. [2022-11-21 17:20:32,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 259 transitions, 1121 flow [2022-11-21 17:20:32,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 259 transitions, 1063 flow, removed 2 selfloop flow, removed 17 redundant places. [2022-11-21 17:20:32,253 INFO L231 Difference]: Finished difference. Result has 190 places, 159 transitions, 559 flow [2022-11-21 17:20:32,254 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=559, PETRI_PLACES=190, PETRI_TRANSITIONS=159} [2022-11-21 17:20:32,254 INFO L288 CegarLoopForPetriNet]: 134 programPoint places, 56 predicate places. [2022-11-21 17:20:32,255 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 159 transitions, 559 flow [2022-11-21 17:20:32,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 115.65217391304348) internal successors, (2660), 23 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:32,256 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:20:32,257 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:20:32,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 17:20:32,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:20:32,465 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-21 17:20:32,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:32,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1504706826, now seen corresponding path program 1 times [2022-11-21 17:20:32,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:32,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281881516] [2022-11-21 17:20:32,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:32,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:32,599 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:20:32,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:32,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281881516] [2022-11-21 17:20:32,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281881516] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:20:32,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649880620] [2022-11-21 17:20:32,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:32,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:20:32,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:20:32,604 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:20:32,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 17:20:32,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:32,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 17:20:32,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:20:32,971 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:20:32,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:20:33,313 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:20:33,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649880620] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:20:33,314 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:20:33,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-11-21 17:20:33,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197848843] [2022-11-21 17:20:33,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:20:33,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-21 17:20:33,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:33,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-21 17:20:33,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-21 17:20:33,321 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 160 [2022-11-21 17:20:33,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 159 transitions, 559 flow. Second operand has 23 states, 23 states have (on average 115.73913043478261) internal successors, (2662), 23 states have internal predecessors, (2662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:33,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:20:33,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 160 [2022-11-21 17:20:33,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:20:36,032 INFO L130 PetriNetUnfolder]: 4564/10221 cut-off events. [2022-11-21 17:20:36,032 INFO L131 PetriNetUnfolder]: For 2974/3766 co-relation queries the response was YES. [2022-11-21 17:20:36,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26000 conditions, 10221 events. 4564/10221 cut-off events. For 2974/3766 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 96672 event pairs, 1053 based on Foata normal form. 907/10613 useless extension candidates. Maximal degree in co-relation 17962. Up to 2554 conditions per place. [2022-11-21 17:20:36,097 INFO L137 encePairwiseOnDemand]: 142/160 looper letters, 105 selfloop transitions, 26 changer transitions 66/290 dead transitions. [2022-11-21 17:20:36,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 290 transitions, 1405 flow [2022-11-21 17:20:36,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-21 17:20:36,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-21 17:20:36,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2957 transitions. [2022-11-21 17:20:36,106 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.73925 [2022-11-21 17:20:36,106 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2957 transitions. [2022-11-21 17:20:36,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2957 transitions. [2022-11-21 17:20:36,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:20:36,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2957 transitions. [2022-11-21 17:20:36,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 118.28) internal successors, (2957), 25 states have internal predecessors, (2957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:36,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 160.0) internal successors, (4160), 26 states have internal predecessors, (4160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:36,125 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 160.0) internal successors, (4160), 26 states have internal predecessors, (4160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:36,126 INFO L175 Difference]: Start difference. First operand has 190 places, 159 transitions, 559 flow. Second operand 25 states and 2957 transitions. [2022-11-21 17:20:36,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 290 transitions, 1405 flow [2022-11-21 17:20:36,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 290 transitions, 1368 flow, removed 3 selfloop flow, removed 10 redundant places. [2022-11-21 17:20:36,146 INFO L231 Difference]: Finished difference. Result has 209 places, 158 transitions, 591 flow [2022-11-21 17:20:36,148 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=591, PETRI_PLACES=209, PETRI_TRANSITIONS=158} [2022-11-21 17:20:36,149 INFO L288 CegarLoopForPetriNet]: 134 programPoint places, 75 predicate places. [2022-11-21 17:20:36,149 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 158 transitions, 591 flow [2022-11-21 17:20:36,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 115.73913043478261) internal successors, (2662), 23 states have internal predecessors, (2662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:36,150 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:20:36,152 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:20:36,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-21 17:20:36,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:20:36,358 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-21 17:20:36,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:36,358 INFO L85 PathProgramCache]: Analyzing trace with hash -387130772, now seen corresponding path program 1 times [2022-11-21 17:20:36,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:36,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656015845] [2022-11-21 17:20:36,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:36,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:36,476 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-21 17:20:36,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:36,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656015845] [2022-11-21 17:20:36,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656015845] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:20:36,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697073274] [2022-11-21 17:20:36,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:36,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:20:36,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:20:36,479 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:20:36,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 17:20:36,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:36,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 17:20:36,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:20:36,617 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-21 17:20:36,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:20:36,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697073274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:20:36,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:20:36,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 17:20:36,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568456373] [2022-11-21 17:20:36,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:20:36,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:20:36,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:36,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:20:36,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:20:36,620 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 160 [2022-11-21 17:20:36,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 158 transitions, 591 flow. Second operand has 6 states, 6 states have (on average 136.33333333333334) internal successors, (818), 6 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:36,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:20:36,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 160 [2022-11-21 17:20:36,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:20:37,573 INFO L130 PetriNetUnfolder]: 1491/3669 cut-off events. [2022-11-21 17:20:37,574 INFO L131 PetriNetUnfolder]: For 1110/1110 co-relation queries the response was YES. [2022-11-21 17:20:37,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9576 conditions, 3669 events. 1491/3669 cut-off events. For 1110/1110 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 31327 event pairs, 15 based on Foata normal form. 90/3589 useless extension candidates. Maximal degree in co-relation 7203. Up to 915 conditions per place. [2022-11-21 17:20:37,613 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 35 selfloop transitions, 8 changer transitions 0/176 dead transitions. [2022-11-21 17:20:37,613 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 176 transitions, 726 flow [2022-11-21 17:20:37,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:20:37,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 17:20:37,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 978 transitions. [2022-11-21 17:20:37,616 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8732142857142857 [2022-11-21 17:20:37,616 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 978 transitions. [2022-11-21 17:20:37,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 978 transitions. [2022-11-21 17:20:37,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:20:37,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 978 transitions. [2022-11-21 17:20:37,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 139.71428571428572) internal successors, (978), 7 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:37,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:37,627 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:37,628 INFO L175 Difference]: Start difference. First operand has 209 places, 158 transitions, 591 flow. Second operand 7 states and 978 transitions. [2022-11-21 17:20:37,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 176 transitions, 726 flow [2022-11-21 17:20:37,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 176 transitions, 685 flow, removed 6 selfloop flow, removed 14 redundant places. [2022-11-21 17:20:37,645 INFO L231 Difference]: Finished difference. Result has 188 places, 156 transitions, 554 flow [2022-11-21 17:20:37,645 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=554, PETRI_PLACES=188, PETRI_TRANSITIONS=156} [2022-11-21 17:20:37,646 INFO L288 CegarLoopForPetriNet]: 134 programPoint places, 54 predicate places. [2022-11-21 17:20:37,647 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 156 transitions, 554 flow [2022-11-21 17:20:37,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.33333333333334) internal successors, (818), 6 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:37,647 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:20:37,648 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:20:37,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-21 17:20:37,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:20:37,859 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-21 17:20:37,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:37,859 INFO L85 PathProgramCache]: Analyzing trace with hash -337587471, now seen corresponding path program 2 times [2022-11-21 17:20:37,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:37,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849754995] [2022-11-21 17:20:37,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:37,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:37,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:38,267 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:20:38,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:38,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849754995] [2022-11-21 17:20:38,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849754995] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:20:38,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346904483] [2022-11-21 17:20:38,269 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:20:38,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:20:38,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:20:38,271 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:20:38,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 17:20:38,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 17:20:38,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:20:38,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 17:20:38,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:20:38,565 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-21 17:20:38,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:20:38,750 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-21 17:20:38,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346904483] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:20:38,750 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:20:38,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2022-11-21 17:20:38,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841210906] [2022-11-21 17:20:38,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:20:38,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 17:20:38,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:38,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 17:20:38,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-11-21 17:20:38,758 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 160 [2022-11-21 17:20:38,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 156 transitions, 554 flow. Second operand has 19 states, 19 states have (on average 113.21052631578948) internal successors, (2151), 19 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:38,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:20:38,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 160 [2022-11-21 17:20:38,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:20:41,434 INFO L130 PetriNetUnfolder]: 3649/9454 cut-off events. [2022-11-21 17:20:41,435 INFO L131 PetriNetUnfolder]: For 5019/5536 co-relation queries the response was YES. [2022-11-21 17:20:41,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25082 conditions, 9454 events. 3649/9454 cut-off events. For 5019/5536 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 93095 event pairs, 825 based on Foata normal form. 590/9812 useless extension candidates. Maximal degree in co-relation 17813. Up to 1800 conditions per place. [2022-11-21 17:20:41,514 INFO L137 encePairwiseOnDemand]: 142/160 looper letters, 121 selfloop transitions, 38 changer transitions 50/297 dead transitions. [2022-11-21 17:20:41,515 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 297 transitions, 1499 flow [2022-11-21 17:20:41,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-21 17:20:41,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-21 17:20:41,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3431 transitions. [2022-11-21 17:20:41,523 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7147916666666667 [2022-11-21 17:20:41,524 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3431 transitions. [2022-11-21 17:20:41,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3431 transitions. [2022-11-21 17:20:41,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:20:41,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3431 transitions. [2022-11-21 17:20:41,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 114.36666666666666) internal successors, (3431), 30 states have internal predecessors, (3431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:41,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 160.0) internal successors, (4960), 31 states have internal predecessors, (4960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:41,548 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 160.0) internal successors, (4960), 31 states have internal predecessors, (4960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:41,548 INFO L175 Difference]: Start difference. First operand has 188 places, 156 transitions, 554 flow. Second operand 30 states and 3431 transitions. [2022-11-21 17:20:41,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 297 transitions, 1499 flow [2022-11-21 17:20:41,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 297 transitions, 1473 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-21 17:20:41,615 INFO L231 Difference]: Finished difference. Result has 213 places, 162 transitions, 678 flow [2022-11-21 17:20:41,616 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=678, PETRI_PLACES=213, PETRI_TRANSITIONS=162} [2022-11-21 17:20:41,617 INFO L288 CegarLoopForPetriNet]: 134 programPoint places, 79 predicate places. [2022-11-21 17:20:41,618 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 162 transitions, 678 flow [2022-11-21 17:20:41,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 113.21052631578948) internal successors, (2151), 19 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:41,619 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:20:41,619 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:20:41,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-21 17:20:41,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:20:41,830 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-21 17:20:41,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:41,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1511587820, now seen corresponding path program 1 times [2022-11-21 17:20:41,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:41,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713823237] [2022-11-21 17:20:41,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:41,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:41,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:42,004 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-21 17:20:42,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:42,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713823237] [2022-11-21 17:20:42,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713823237] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:20:42,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068688181] [2022-11-21 17:20:42,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:42,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:20:42,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:20:42,007 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:20:42,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-21 17:20:42,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:42,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 17:20:42,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:20:42,169 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-21 17:20:42,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:20:42,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068688181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:20:42,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:20:42,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 17:20:42,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730133110] [2022-11-21 17:20:42,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:20:42,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:20:42,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:42,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:20:42,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:20:42,174 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 160 [2022-11-21 17:20:42,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 162 transitions, 678 flow. Second operand has 6 states, 6 states have (on average 136.5) internal successors, (819), 6 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:42,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:20:42,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 160 [2022-11-21 17:20:42,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:20:43,104 INFO L130 PetriNetUnfolder]: 1458/3869 cut-off events. [2022-11-21 17:20:43,105 INFO L131 PetriNetUnfolder]: For 1720/1725 co-relation queries the response was YES. [2022-11-21 17:20:43,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9408 conditions, 3869 events. 1458/3869 cut-off events. For 1720/1725 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 35358 event pairs, 164 based on Foata normal form. 106/3878 useless extension candidates. Maximal degree in co-relation 6878. Up to 1035 conditions per place. [2022-11-21 17:20:43,134 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 31 selfloop transitions, 8 changer transitions 0/179 dead transitions. [2022-11-21 17:20:43,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 179 transitions, 795 flow [2022-11-21 17:20:43,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:20:43,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 17:20:43,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 975 transitions. [2022-11-21 17:20:43,138 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8705357142857143 [2022-11-21 17:20:43,138 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 975 transitions. [2022-11-21 17:20:43,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 975 transitions. [2022-11-21 17:20:43,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:20:43,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 975 transitions. [2022-11-21 17:20:43,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 139.28571428571428) internal successors, (975), 7 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:43,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:43,145 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:43,145 INFO L175 Difference]: Start difference. First operand has 213 places, 162 transitions, 678 flow. Second operand 7 states and 975 transitions. [2022-11-21 17:20:43,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 179 transitions, 795 flow [2022-11-21 17:20:43,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 179 transitions, 745 flow, removed 3 selfloop flow, removed 14 redundant places. [2022-11-21 17:20:43,162 INFO L231 Difference]: Finished difference. Result has 198 places, 160 transitions, 630 flow [2022-11-21 17:20:43,163 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=630, PETRI_PLACES=198, PETRI_TRANSITIONS=160} [2022-11-21 17:20:43,164 INFO L288 CegarLoopForPetriNet]: 134 programPoint places, 64 predicate places. [2022-11-21 17:20:43,164 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 160 transitions, 630 flow [2022-11-21 17:20:43,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.5) internal successors, (819), 6 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:43,164 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:20:43,165 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:20:43,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-21 17:20:43,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-21 17:20:43,370 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-21 17:20:43,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:43,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1682845735, now seen corresponding path program 2 times [2022-11-21 17:20:43,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:43,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671896496] [2022-11-21 17:20:43,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:43,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:43,741 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:20:43,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:43,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671896496] [2022-11-21 17:20:43,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671896496] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:20:43,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177656481] [2022-11-21 17:20:43,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:20:43,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:20:43,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:20:43,744 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:20:43,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-21 17:20:43,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 17:20:43,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:20:43,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 17:20:43,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:20:44,010 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-21 17:20:44,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:20:44,176 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-21 17:20:44,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177656481] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:20:44,176 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:20:44,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2022-11-21 17:20:44,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283908645] [2022-11-21 17:20:44,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:20:44,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 17:20:44,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:44,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 17:20:44,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-11-21 17:20:44,182 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 160 [2022-11-21 17:20:44,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 160 transitions, 630 flow. Second operand has 19 states, 19 states have (on average 113.3157894736842) internal successors, (2153), 19 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:44,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:20:44,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 160 [2022-11-21 17:20:44,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:20:45,963 INFO L130 PetriNetUnfolder]: 3170/7398 cut-off events. [2022-11-21 17:20:45,963 INFO L131 PetriNetUnfolder]: For 6700/8098 co-relation queries the response was YES. [2022-11-21 17:20:45,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21704 conditions, 7398 events. 3170/7398 cut-off events. For 6700/8098 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 67036 event pairs, 712 based on Foata normal form. 1509/8774 useless extension candidates. Maximal degree in co-relation 15087. Up to 1944 conditions per place. [2022-11-21 17:20:45,989 INFO L137 encePairwiseOnDemand]: 143/160 looper letters, 0 selfloop transitions, 0 changer transitions 266/266 dead transitions. [2022-11-21 17:20:45,989 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 266 transitions, 1474 flow [2022-11-21 17:20:45,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-21 17:20:45,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-21 17:20:45,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2967 transitions. [2022-11-21 17:20:45,994 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7132211538461538 [2022-11-21 17:20:45,995 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2967 transitions. [2022-11-21 17:20:45,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2967 transitions. [2022-11-21 17:20:45,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:20:45,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2967 transitions. [2022-11-21 17:20:46,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 114.11538461538461) internal successors, (2967), 26 states have internal predecessors, (2967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:46,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 160.0) internal successors, (4320), 27 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:46,011 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 160.0) internal successors, (4320), 27 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:46,011 INFO L175 Difference]: Start difference. First operand has 198 places, 160 transitions, 630 flow. Second operand 26 states and 2967 transitions. [2022-11-21 17:20:46,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 266 transitions, 1474 flow [2022-11-21 17:20:46,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 266 transitions, 1448 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-21 17:20:46,046 INFO L231 Difference]: Finished difference. Result has 216 places, 0 transitions, 0 flow [2022-11-21 17:20:46,047 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=0, PETRI_PLACES=216, PETRI_TRANSITIONS=0} [2022-11-21 17:20:46,047 INFO L288 CegarLoopForPetriNet]: 134 programPoint places, 82 predicate places. [2022-11-21 17:20:46,047 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 0 transitions, 0 flow [2022-11-21 17:20:46,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 113.3157894736842) internal successors, (2153), 19 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:46,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2022-11-21 17:20:46,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-21 17:20:46,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-21 17:20:46,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-21 17:20:46,052 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-21 17:20:46,052 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-21 17:20:46,052 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 13 remaining) [2022-11-21 17:20:46,052 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 13 remaining) [2022-11-21 17:20:46,052 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 13 remaining) [2022-11-21 17:20:46,053 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-21 17:20:46,053 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-21 17:20:46,053 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-21 17:20:46,053 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-21 17:20:46,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-21 17:20:46,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-21 17:20:46,259 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:20:46,263 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-21 17:20:46,264 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 17:20:46,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 05:20:46 BasicIcfg [2022-11-21 17:20:46,268 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 17:20:46,269 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 17:20:46,269 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 17:20:46,269 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 17:20:46,270 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:20:18" (3/4) ... [2022-11-21 17:20:46,272 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-21 17:20:46,277 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-21 17:20:46,277 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-21 17:20:46,277 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-21 17:20:46,282 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-11-21 17:20:46,282 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-21 17:20:46,282 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-21 17:20:46,283 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-21 17:20:46,315 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 17:20:46,315 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 17:20:46,316 INFO L158 Benchmark]: Toolchain (without parser) took 29074.00ms. Allocated memory was 169.9MB in the beginning and 2.1GB in the end (delta: 2.0GB). Free memory was 123.9MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 579.2MB. Max. memory is 16.1GB. [2022-11-21 17:20:46,316 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 169.9MB. Free memory is still 141.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:20:46,317 INFO L158 Benchmark]: CACSL2BoogieTranslator took 404.19ms. Allocated memory is still 169.9MB. Free memory was 123.9MB in the beginning and 112.0MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-21 17:20:46,317 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.05ms. Allocated memory is still 169.9MB. Free memory was 112.0MB in the beginning and 110.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 17:20:46,317 INFO L158 Benchmark]: Boogie Preprocessor took 58.72ms. Allocated memory is still 169.9MB. Free memory was 110.5MB in the beginning and 108.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 17:20:46,318 INFO L158 Benchmark]: RCFGBuilder took 658.48ms. Allocated memory is still 169.9MB. Free memory was 108.4MB in the beginning and 88.9MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-21 17:20:46,318 INFO L158 Benchmark]: TraceAbstraction took 27830.19ms. Allocated memory was 169.9MB in the beginning and 2.1GB in the end (delta: 2.0GB). Free memory was 88.3MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. [2022-11-21 17:20:46,319 INFO L158 Benchmark]: Witness Printer took 46.76ms. Allocated memory is still 2.1GB. Free memory was 1.5GB in the beginning and 1.5GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 17:20:46,320 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 169.9MB. Free memory is still 141.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 404.19ms. Allocated memory is still 169.9MB. Free memory was 123.9MB in the beginning and 112.0MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.05ms. Allocated memory is still 169.9MB. Free memory was 112.0MB in the beginning and 110.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.72ms. Allocated memory is still 169.9MB. Free memory was 110.5MB in the beginning and 108.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 658.48ms. Allocated memory is still 169.9MB. Free memory was 108.4MB in the beginning and 88.9MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 27830.19ms. Allocated memory was 169.9MB in the beginning and 2.1GB in the end (delta: 2.0GB). Free memory was 88.3MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. * Witness Printer took 46.76ms. Allocated memory is still 2.1GB. Free memory was 1.5GB in the beginning and 1.5GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 59]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 59]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 108]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 108]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 184 locations, 13 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 27.7s, OverallIterations: 14, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 17.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2603 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2603 mSDsluCounter, 499 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 409 mSDsCounter, 90 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3358 IncrementalHoareTripleChecker+Invalid, 3448 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 90 mSolverCounterUnsat, 90 mSDtfsCounter, 3358 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1715 GetRequests, 1417 SyntacticMatches, 13 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1919 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=678occurred in iteration=12, InterpolantAutomatonStates: 200, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 2116 NumberOfCodeBlocks, 2016 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 2622 ConstructedInterpolants, 0 QuantifiedInterpolants, 5684 SizeOfPredicates, 54 NumberOfNonLiveVariables, 2021 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 31 InterpolantComputations, 8 PerfectInterpolantSequences, 299/532 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-21 17:20:46,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f4a148-9b31-4b46-a3c4-c51dfe55376e/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE