./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R --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 a87860dbf851812846995aa918799e2b576306268e8c461660702f868d3b2804 --- 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-38b53e6 [2022-11-25 17:54:41,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:54:41,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:54:41,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:54:41,371 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:54:41,372 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:54:41,373 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:54:41,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:54:41,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:54:41,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:54:41,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:54:41,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:54:41,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:54:41,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:54:41,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:54:41,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:54:41,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:54:41,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:54:41,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:54:41,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:54:41,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:54:41,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:54:41,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:54:41,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:54:41,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:54:41,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:54:41,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:54:41,404 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:54:41,404 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:54:41,405 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:54:41,406 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:54:41,407 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:54:41,408 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:54:41,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:54:41,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:54:41,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:54:41,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:54:41,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:54:41,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:54:41,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:54:41,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:54:41,415 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 17:54:41,439 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:54:41,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:54:41,440 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:54:41,440 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:54:41,441 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:54:41,441 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:54:41,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:54:41,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:54:41,443 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:54:41,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:54:41,443 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:54:41,444 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:54:41,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:54:41,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:54:41,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:54:41,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:54:41,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:54:41,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:54:41,446 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 17:54:41,446 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:54:41,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:54:41,446 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:54:41,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:54:41,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:54:41,447 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:54:41,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:54:41,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:54:41,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:54:41,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:54:41,449 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:54:41,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:54:41,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:54:41,449 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:54:41,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:54:41,450 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:54:41,450 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:54:41,450 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a87860dbf851812846995aa918799e2b576306268e8c461660702f868d3b2804 [2022-11-25 17:54:41,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:54:41,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:54:41,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:54:41,823 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:54:41,824 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:54:41,826 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c [2022-11-25 17:54:44,952 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:54:45,177 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:54:45,181 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c [2022-11-25 17:54:45,189 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/data/da671729e/bad12c7c8b814d71abaf87c5f280b652/FLAG7eca61731 [2022-11-25 17:54:45,204 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/data/da671729e/bad12c7c8b814d71abaf87c5f280b652 [2022-11-25 17:54:45,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:54:45,209 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:54:45,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:54:45,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:54:45,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:54:45,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:54:45" (1/1) ... [2022-11-25 17:54:45,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a9b1fe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:45, skipping insertion in model container [2022-11-25 17:54:45,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:54:45" (1/1) ... [2022-11-25 17:54:45,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:54:45,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:54:45,481 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:45,483 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:45,487 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:45,488 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:45,490 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:45,491 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:45,500 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_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c[2553,2566] [2022-11-25 17:54:45,506 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:54:45,517 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:54:45,529 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:45,530 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:45,532 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:45,533 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:45,534 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:45,535 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:45,541 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_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c[2553,2566] [2022-11-25 17:54:45,545 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:54:45,562 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:54:45,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:45 WrapperNode [2022-11-25 17:54:45,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:54:45,567 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:54:45,567 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:54:45,567 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:54:45,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:45" (1/1) ... [2022-11-25 17:54:45,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:45" (1/1) ... [2022-11-25 17:54:45,648 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 103 [2022-11-25 17:54:45,649 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:54:45,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:54:45,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:54:45,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:54:45,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:45" (1/1) ... [2022-11-25 17:54:45,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:45" (1/1) ... [2022-11-25 17:54:45,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:45" (1/1) ... [2022-11-25 17:54:45,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:45" (1/1) ... [2022-11-25 17:54:45,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:45" (1/1) ... [2022-11-25 17:54:45,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:45" (1/1) ... [2022-11-25 17:54:45,693 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:45" (1/1) ... [2022-11-25 17:54:45,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:45" (1/1) ... [2022-11-25 17:54:45,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:54:45,703 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:54:45,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:54:45,704 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:54:45,705 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:45" (1/1) ... [2022-11-25 17:54:45,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:54:45,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:54:45,736 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:54:45,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:54:45,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:54:45,777 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 17:54:45,778 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 17:54:45,778 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 17:54:45,778 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 17:54:45,778 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 17:54:45,778 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 17:54:45,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:54:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:54:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:54:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 17:54:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 17:54:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 17:54:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:54:45,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:54:45,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:54:45,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:54:45,781 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:54:45,905 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:54:45,908 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:54:46,355 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:54:46,437 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:54:46,437 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-25 17:54:46,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:54:46 BoogieIcfgContainer [2022-11-25 17:54:46,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:54:46,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:54:46,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:54:46,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:54:46,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:54:45" (1/3) ... [2022-11-25 17:54:46,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e8beec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:54:46, skipping insertion in model container [2022-11-25 17:54:46,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:45" (2/3) ... [2022-11-25 17:54:46,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e8beec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:54:46, skipping insertion in model container [2022-11-25 17:54:46,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:54:46" (3/3) ... [2022-11-25 17:54:46,449 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array.wvr.c [2022-11-25 17:54:46,459 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:54:46,471 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:54:46,471 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-25 17:54:46,471 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:54:46,561 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 17:54:46,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 168 transitions, 360 flow [2022-11-25 17:54:46,700 INFO L130 PetriNetUnfolder]: 12/165 cut-off events. [2022-11-25 17:54:46,705 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 17:54:46,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 165 events. 12/165 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 132 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 124. Up to 2 conditions per place. [2022-11-25 17:54:46,714 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 168 transitions, 360 flow [2022-11-25 17:54:46,728 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 144 transitions, 303 flow [2022-11-25 17:54:46,733 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:54:46,768 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 144 transitions, 303 flow [2022-11-25 17:54:46,777 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 144 transitions, 303 flow [2022-11-25 17:54:46,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 144 transitions, 303 flow [2022-11-25 17:54:46,868 INFO L130 PetriNetUnfolder]: 11/144 cut-off events. [2022-11-25 17:54:46,877 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:54:46,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 144 events. 11/144 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 130 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 124. Up to 2 conditions per place. [2022-11-25 17:54:46,882 INFO L119 LiptonReduction]: Number of co-enabled transitions 2184 [2022-11-25 17:54:55,852 INFO L134 LiptonReduction]: Checked pairs total: 2545 [2022-11-25 17:54:55,852 INFO L136 LiptonReduction]: Total number of compositions: 152 [2022-11-25 17:54:55,870 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:54:55,877 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;@7c818e71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:54:55,878 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-25 17:54:55,880 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 17:54:55,881 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:54:55,881 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:54:55,882 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 17:54:55,882 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:54:55,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:54:55,887 INFO L85 PathProgramCache]: Analyzing trace with hash 21447, now seen corresponding path program 1 times [2022-11-25 17:54:55,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:54:55,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615724272] [2022-11-25 17:54:55,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:54:55,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:54:56,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:54:56,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:54:56,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:54:56,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615724272] [2022-11-25 17:54:56,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615724272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:54:56,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:54:56,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:54:56,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287479176] [2022-11-25 17:54:56,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:54:56,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:54:56,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:54:56,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:54:56,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:54:56,324 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 320 [2022-11-25 17:54:56,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:56,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:54:56,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 320 [2022-11-25 17:54:56,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:54:56,940 INFO L130 PetriNetUnfolder]: 2481/3227 cut-off events. [2022-11-25 17:54:56,941 INFO L131 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2022-11-25 17:54:56,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6586 conditions, 3227 events. 2481/3227 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 13572 event pairs, 1163 based on Foata normal form. 0/1172 useless extension candidates. Maximal degree in co-relation 2828. Up to 1610 conditions per place. [2022-11-25 17:54:57,005 INFO L137 encePairwiseOnDemand]: 316/320 looper letters, 49 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2022-11-25 17:54:57,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 54 transitions, 240 flow [2022-11-25 17:54:57,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:54:57,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:54:57,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 494 transitions. [2022-11-25 17:54:57,027 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5145833333333333 [2022-11-25 17:54:57,028 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 494 transitions. [2022-11-25 17:54:57,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 494 transitions. [2022-11-25 17:54:57,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:54:57,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 494 transitions. [2022-11-25 17:54:57,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:57,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 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) [2022-11-25 17:54:57,048 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 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) [2022-11-25 17:54:57,050 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 75 flow. Second operand 3 states and 494 transitions. [2022-11-25 17:54:57,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 54 transitions, 240 flow [2022-11-25 17:54:57,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 54 transitions, 222 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-25 17:54:57,071 INFO L231 Difference]: Finished difference. Result has 34 places, 31 transitions, 80 flow [2022-11-25 17:54:57,073 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=34, PETRI_TRANSITIONS=31} [2022-11-25 17:54:57,077 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2022-11-25 17:54:57,078 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 31 transitions, 80 flow [2022-11-25 17:54:57,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:57,078 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:54:57,079 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:54:57,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:54:57,079 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:54:57,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:54:57,080 INFO L85 PathProgramCache]: Analyzing trace with hash 666185, now seen corresponding path program 1 times [2022-11-25 17:54:57,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:54:57,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210526533] [2022-11-25 17:54:57,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:54:57,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:54:57,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:54:57,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:54:57,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:54:57,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210526533] [2022-11-25 17:54:57,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210526533] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:54:57,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814531756] [2022-11-25 17:54:57,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:54:57,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:54:57,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:54:57,279 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:54:57,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:54:57,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:54:57,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:54:57,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:54:57,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:54:57,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:54:57,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814531756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:54:57,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:54:57,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-25 17:54:57,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177524308] [2022-11-25 17:54:57,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:54:57,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:54:57,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:54:57,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:54:57,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:54:57,511 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 320 [2022-11-25 17:54:57,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 147.75) internal successors, (591), 4 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:57,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:54:57,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 320 [2022-11-25 17:54:57,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:54:58,146 INFO L130 PetriNetUnfolder]: 2481/3226 cut-off events. [2022-11-25 17:54:58,146 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-25 17:54:58,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6516 conditions, 3226 events. 2481/3226 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 13616 event pairs, 1163 based on Foata normal form. 0/1174 useless extension candidates. Maximal degree in co-relation 3300. Up to 1610 conditions per place. [2022-11-25 17:54:58,174 INFO L137 encePairwiseOnDemand]: 317/320 looper letters, 48 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2022-11-25 17:54:58,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 53 transitions, 228 flow [2022-11-25 17:54:58,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:54:58,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:54:58,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 639 transitions. [2022-11-25 17:54:58,182 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49921875 [2022-11-25 17:54:58,182 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 639 transitions. [2022-11-25 17:54:58,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 639 transitions. [2022-11-25 17:54:58,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:54:58,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 639 transitions. [2022-11-25 17:54:58,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:58,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 320.0) internal successors, (1600), 5 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:58,195 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 320.0) internal successors, (1600), 5 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:58,195 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 80 flow. Second operand 4 states and 639 transitions. [2022-11-25 17:54:58,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 53 transitions, 228 flow [2022-11-25 17:54:58,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 53 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:54:58,200 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 78 flow [2022-11-25 17:54:58,200 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2022-11-25 17:54:58,201 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2022-11-25 17:54:58,201 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 78 flow [2022-11-25 17:54:58,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.75) internal successors, (591), 4 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:58,204 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:54:58,204 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:54:58,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:54:58,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:54:58,412 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:54:58,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:54:58,413 INFO L85 PathProgramCache]: Analyzing trace with hash 666191, now seen corresponding path program 1 times [2022-11-25 17:54:58,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:54:58,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466613071] [2022-11-25 17:54:58,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:54:58,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:54:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:54:58,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:54:58,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:54:58,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466613071] [2022-11-25 17:54:58,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466613071] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:54:58,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341129446] [2022-11-25 17:54:58,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:54:58,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:54:58,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:54:58,522 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:54:58,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:54:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:54:58,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:54:58,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:54:58,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:54:58,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:54:58,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:54:58,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341129446] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:54:58,675 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:54:58,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-25 17:54:58,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449428755] [2022-11-25 17:54:58,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:54:58,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:54:58,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:54:58,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:54:58,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:54:58,731 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 320 [2022-11-25 17:54:58,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 78 flow. Second operand has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:58,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:54:58,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 320 [2022-11-25 17:54:58,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:54:59,957 INFO L130 PetriNetUnfolder]: 6129/7990 cut-off events. [2022-11-25 17:54:59,958 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-11-25 17:54:59,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16123 conditions, 7990 events. 6129/7990 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 38456 event pairs, 2894 based on Foata normal form. 0/2923 useless extension candidates. Maximal degree in co-relation 12811. Up to 1610 conditions per place. [2022-11-25 17:55:00,021 INFO L137 encePairwiseOnDemand]: 317/320 looper letters, 117 selfloop transitions, 5 changer transitions 0/125 dead transitions. [2022-11-25 17:55:00,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 125 transitions, 542 flow [2022-11-25 17:55:00,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:55:00,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:55:00,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1007 transitions. [2022-11-25 17:55:00,025 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5244791666666667 [2022-11-25 17:55:00,025 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1007 transitions. [2022-11-25 17:55:00,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1007 transitions. [2022-11-25 17:55:00,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:55:00,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1007 transitions. [2022-11-25 17:55:00,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 167.83333333333334) internal successors, (1007), 6 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:00,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 320.0) internal successors, (2240), 7 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:00,040 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 320.0) internal successors, (2240), 7 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:00,040 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 78 flow. Second operand 6 states and 1007 transitions. [2022-11-25 17:55:00,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 125 transitions, 542 flow [2022-11-25 17:55:00,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 125 transitions, 539 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:55:00,045 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 111 flow [2022-11-25 17:55:00,045 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=111, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2022-11-25 17:55:00,053 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2022-11-25 17:55:00,053 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 111 flow [2022-11-25 17:55:00,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:00,054 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:55:00,054 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:55:00,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-25 17:55:00,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:55:00,260 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:55:00,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:55:00,262 INFO L85 PathProgramCache]: Analyzing trace with hash 639974871, now seen corresponding path program 1 times [2022-11-25 17:55:00,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:55:00,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231654970] [2022-11-25 17:55:00,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:55:00,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:55:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:55:00,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:00,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:55:00,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231654970] [2022-11-25 17:55:00,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231654970] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:55:00,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:55:00,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:55:00,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689971141] [2022-11-25 17:55:00,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:55:00,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:55:00,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:55:00,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:55:00,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:55:00,333 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 320 [2022-11-25 17:55:00,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:00,335 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:55:00,335 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 320 [2022-11-25 17:55:00,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:55:01,794 INFO L130 PetriNetUnfolder]: 8376/11157 cut-off events. [2022-11-25 17:55:01,794 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2022-11-25 17:55:01,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22601 conditions, 11157 events. 8376/11157 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 810. Compared 59949 event pairs, 1950 based on Foata normal form. 0/4567 useless extension candidates. Maximal degree in co-relation 18073. Up to 7123 conditions per place. [2022-11-25 17:55:01,912 INFO L137 encePairwiseOnDemand]: 316/320 looper letters, 48 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2022-11-25 17:55:01,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 52 transitions, 254 flow [2022-11-25 17:55:01,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:55:01,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:55:01,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 492 transitions. [2022-11-25 17:55:01,915 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5125 [2022-11-25 17:55:01,916 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 492 transitions. [2022-11-25 17:55:01,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 492 transitions. [2022-11-25 17:55:01,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:55:01,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 492 transitions. [2022-11-25 17:55:01,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:01,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 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) [2022-11-25 17:55:01,923 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 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) [2022-11-25 17:55:01,923 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 111 flow. Second operand 3 states and 492 transitions. [2022-11-25 17:55:01,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 52 transitions, 254 flow [2022-11-25 17:55:01,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 246 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-11-25 17:55:01,928 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 117 flow [2022-11-25 17:55:01,928 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2022-11-25 17:55:01,930 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2022-11-25 17:55:01,930 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 117 flow [2022-11-25 17:55:01,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:01,931 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:55:01,931 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 17:55:01,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:55:01,932 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:55:01,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:55:01,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1635614900, now seen corresponding path program 1 times [2022-11-25 17:55:01,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:55:01,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773574272] [2022-11-25 17:55:01,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:55:01,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:55:01,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:55:02,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:02,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:55:02,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773574272] [2022-11-25 17:55:02,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773574272] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:55:02,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846430857] [2022-11-25 17:55:02,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:55:02,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:55:02,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:55:02,075 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:55:02,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:55:02,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:55:02,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:55:02,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:55:02,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:02,220 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:55:02,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846430857] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:55:02,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:55:02,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2022-11-25 17:55:02,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505139317] [2022-11-25 17:55:02,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:55:02,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:55:02,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:55:02,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:55:02,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:55:02,321 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 320 [2022-11-25 17:55:02,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 117 flow. Second operand has 5 states, 5 states have (on average 142.2) internal successors, (711), 5 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:02,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:55:02,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 320 [2022-11-25 17:55:02,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:55:03,609 INFO L130 PetriNetUnfolder]: 6597/8823 cut-off events. [2022-11-25 17:55:03,609 INFO L131 PetriNetUnfolder]: For 1163/1163 co-relation queries the response was YES. [2022-11-25 17:55:03,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19219 conditions, 8823 events. 6597/8823 cut-off events. For 1163/1163 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 46122 event pairs, 3596 based on Foata normal form. 1/4068 useless extension candidates. Maximal degree in co-relation 19202. Up to 8691 conditions per place. [2022-11-25 17:55:03,670 INFO L137 encePairwiseOnDemand]: 317/320 looper letters, 30 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2022-11-25 17:55:03,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 34 transitions, 181 flow [2022-11-25 17:55:03,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:55:03,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:55:03,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2022-11-25 17:55:03,673 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4708333333333333 [2022-11-25 17:55:03,673 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2022-11-25 17:55:03,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2022-11-25 17:55:03,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:55:03,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2022-11-25 17:55:03,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:03,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 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) [2022-11-25 17:55:03,679 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 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) [2022-11-25 17:55:03,679 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 117 flow. Second operand 3 states and 452 transitions. [2022-11-25 17:55:03,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 34 transitions, 181 flow [2022-11-25 17:55:03,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 34 transitions, 177 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 17:55:03,682 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 121 flow [2022-11-25 17:55:03,682 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2022-11-25 17:55:03,685 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 9 predicate places. [2022-11-25 17:55:03,687 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 121 flow [2022-11-25 17:55:03,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 142.2) internal successors, (711), 5 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:03,688 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:55:03,688 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-11-25 17:55:03,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-25 17:55:03,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:55:03,894 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:55:03,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:55:03,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1627200435, now seen corresponding path program 2 times [2022-11-25 17:55:03,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:55:03,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549263056] [2022-11-25 17:55:03,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:55:03,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:55:03,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:55:03,996 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:03,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:55:03,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549263056] [2022-11-25 17:55:03,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549263056] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:55:03,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120421542] [2022-11-25 17:55:03,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:55:03,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:55:03,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:55:03,998 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:55:04,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 17:55:04,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 17:55:04,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:55:04,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:55:04,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:55:04,127 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 17:55:04,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:55:04,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120421542] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:55:04,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:55:04,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-11-25 17:55:04,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306705168] [2022-11-25 17:55:04,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:55:04,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:55:04,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:55:04,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:55:04,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:55:04,144 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 320 [2022-11-25 17:55:04,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:04,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:55:04,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 320 [2022-11-25 17:55:04,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:55:05,124 INFO L130 PetriNetUnfolder]: 5861/7842 cut-off events. [2022-11-25 17:55:05,125 INFO L131 PetriNetUnfolder]: For 492/716 co-relation queries the response was YES. [2022-11-25 17:55:05,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16780 conditions, 7842 events. 5861/7842 cut-off events. For 492/716 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 40799 event pairs, 3152 based on Foata normal form. 225/3771 useless extension candidates. Maximal degree in co-relation 16760. Up to 7726 conditions per place. [2022-11-25 17:55:05,190 INFO L137 encePairwiseOnDemand]: 318/320 looper letters, 29 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2022-11-25 17:55:05,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 33 transitions, 171 flow [2022-11-25 17:55:05,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:55:05,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:55:05,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 470 transitions. [2022-11-25 17:55:05,193 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2022-11-25 17:55:05,193 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 470 transitions. [2022-11-25 17:55:05,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 470 transitions. [2022-11-25 17:55:05,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:55:05,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 470 transitions. [2022-11-25 17:55:05,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:05,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 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) [2022-11-25 17:55:05,200 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 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) [2022-11-25 17:55:05,200 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 121 flow. Second operand 3 states and 470 transitions. [2022-11-25 17:55:05,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 33 transitions, 171 flow [2022-11-25 17:55:05,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 33 transitions, 157 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-25 17:55:05,202 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 99 flow [2022-11-25 17:55:05,202 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2022-11-25 17:55:05,205 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 4 predicate places. [2022-11-25 17:55:05,205 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 99 flow [2022-11-25 17:55:05,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:05,206 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:55:05,206 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:55:05,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:55:05,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-25 17:55:05,413 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:55:05,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:55:05,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1087980716, now seen corresponding path program 1 times [2022-11-25 17:55:05,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:55:05,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099483210] [2022-11-25 17:55:05,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:55:05,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:55:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:55:05,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:55:05,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:55:05,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099483210] [2022-11-25 17:55:05,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099483210] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:55:05,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064220298] [2022-11-25 17:55:05,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:55:05,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:55:05,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:55:05,496 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:55:05,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 17:55:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:55:05,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 17:55:05,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:55:05,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:05,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:55:05,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:05,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064220298] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:55:05,760 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:55:05,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2022-11-25 17:55:05,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650793276] [2022-11-25 17:55:05,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:55:05,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 17:55:05,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:55:05,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 17:55:05,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:55:06,014 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 320 [2022-11-25 17:55:06,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 99 flow. Second operand has 13 states, 13 states have (on average 139.53846153846155) internal successors, (1814), 13 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:06,017 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:55:06,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 320 [2022-11-25 17:55:06,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:55:07,674 INFO L130 PetriNetUnfolder]: 5704/7545 cut-off events. [2022-11-25 17:55:07,674 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2022-11-25 17:55:07,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16167 conditions, 7545 events. 5704/7545 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 38896 event pairs, 228 based on Foata normal form. 52/3768 useless extension candidates. Maximal degree in co-relation 16157. Up to 1836 conditions per place. [2022-11-25 17:55:07,714 INFO L137 encePairwiseOnDemand]: 311/320 looper letters, 137 selfloop transitions, 11 changer transitions 0/150 dead transitions. [2022-11-25 17:55:07,715 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 150 transitions, 664 flow [2022-11-25 17:55:07,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 17:55:07,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 17:55:07,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1811 transitions. [2022-11-25 17:55:07,720 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47161458333333334 [2022-11-25 17:55:07,720 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1811 transitions. [2022-11-25 17:55:07,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1811 transitions. [2022-11-25 17:55:07,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:55:07,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1811 transitions. [2022-11-25 17:55:07,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 150.91666666666666) internal successors, (1811), 12 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:07,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 320.0) internal successors, (4160), 13 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) [2022-11-25 17:55:07,734 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 320.0) internal successors, (4160), 13 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) [2022-11-25 17:55:07,734 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 99 flow. Second operand 12 states and 1811 transitions. [2022-11-25 17:55:07,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 150 transitions, 664 flow [2022-11-25 17:55:07,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 150 transitions, 663 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:55:07,737 INFO L231 Difference]: Finished difference. Result has 55 places, 38 transitions, 163 flow [2022-11-25 17:55:07,738 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=163, PETRI_PLACES=55, PETRI_TRANSITIONS=38} [2022-11-25 17:55:07,738 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 19 predicate places. [2022-11-25 17:55:07,738 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 38 transitions, 163 flow [2022-11-25 17:55:07,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 139.53846153846155) internal successors, (1814), 13 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:07,739 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:55:07,740 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:55:07,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 17:55:07,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:55:07,946 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:55:07,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:55:07,946 INFO L85 PathProgramCache]: Analyzing trace with hash -627605498, now seen corresponding path program 1 times [2022-11-25 17:55:07,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:55:07,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093370547] [2022-11-25 17:55:07,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:55:07,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:55:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:55:07,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:55:07,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:55:07,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093370547] [2022-11-25 17:55:07,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093370547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:55:07,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:55:07,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:55:07,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941169196] [2022-11-25 17:55:07,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:55:07,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:55:07,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:55:08,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:55:08,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:55:08,009 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 320 [2022-11-25 17:55:08,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 38 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:08,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:55:08,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 320 [2022-11-25 17:55:08,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:55:08,921 INFO L130 PetriNetUnfolder]: 5581/7856 cut-off events. [2022-11-25 17:55:08,921 INFO L131 PetriNetUnfolder]: For 9470/9811 co-relation queries the response was YES. [2022-11-25 17:55:08,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20537 conditions, 7856 events. 5581/7856 cut-off events. For 9470/9811 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 45446 event pairs, 2522 based on Foata normal form. 341/5248 useless extension candidates. Maximal degree in co-relation 20520. Up to 5460 conditions per place. [2022-11-25 17:55:08,986 INFO L137 encePairwiseOnDemand]: 316/320 looper letters, 54 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2022-11-25 17:55:08,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 59 transitions, 360 flow [2022-11-25 17:55:08,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:55:08,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:55:08,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 487 transitions. [2022-11-25 17:55:08,988 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5072916666666667 [2022-11-25 17:55:08,988 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 487 transitions. [2022-11-25 17:55:08,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 487 transitions. [2022-11-25 17:55:08,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:55:08,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 487 transitions. [2022-11-25 17:55:08,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:08,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 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) [2022-11-25 17:55:08,993 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 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) [2022-11-25 17:55:08,993 INFO L175 Difference]: Start difference. First operand has 55 places, 38 transitions, 163 flow. Second operand 3 states and 487 transitions. [2022-11-25 17:55:08,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 59 transitions, 360 flow [2022-11-25 17:55:09,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 59 transitions, 338 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-11-25 17:55:09,026 INFO L231 Difference]: Finished difference. Result has 55 places, 39 transitions, 161 flow [2022-11-25 17:55:09,026 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=55, PETRI_TRANSITIONS=39} [2022-11-25 17:55:09,027 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 19 predicate places. [2022-11-25 17:55:09,027 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 39 transitions, 161 flow [2022-11-25 17:55:09,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:09,027 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:55:09,027 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-25 17:55:09,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:55:09,028 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:55:09,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:55:09,028 INFO L85 PathProgramCache]: Analyzing trace with hash -379900020, now seen corresponding path program 1 times [2022-11-25 17:55:09,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:55:09,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065651580] [2022-11-25 17:55:09,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:55:09,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:55:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:55:09,103 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:55:09,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:55:09,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065651580] [2022-11-25 17:55:09,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065651580] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:55:09,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363841408] [2022-11-25 17:55:09,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:55:09,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:55:09,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:55:09,105 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:55:09,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 17:55:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:55:09,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:55:09,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:55:09,224 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:55:09,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:55:09,245 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:55:09,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363841408] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:55:09,245 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:55:09,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-25 17:55:09,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957971748] [2022-11-25 17:55:09,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:55:09,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:55:09,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:55:09,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:55:09,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:55:09,270 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 320 [2022-11-25 17:55:09,272 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 39 transitions, 161 flow. Second operand has 7 states, 7 states have (on average 149.71428571428572) internal successors, (1048), 7 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:09,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:55:09,272 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 320 [2022-11-25 17:55:09,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:55:10,778 INFO L130 PetriNetUnfolder]: 11203/15518 cut-off events. [2022-11-25 17:55:10,778 INFO L131 PetriNetUnfolder]: For 19254/19890 co-relation queries the response was YES. [2022-11-25 17:55:10,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44726 conditions, 15518 events. 11203/15518 cut-off events. For 19254/19890 co-relation queries the response was YES. Maximal size of possible extension queue 911. Compared 94990 event pairs, 1783 based on Foata normal form. 635/11623 useless extension candidates. Maximal degree in co-relation 44708. Up to 4250 conditions per place. [2022-11-25 17:55:10,908 INFO L137 encePairwiseOnDemand]: 317/320 looper letters, 108 selfloop transitions, 7 changer transitions 0/117 dead transitions. [2022-11-25 17:55:10,908 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 117 transitions, 661 flow [2022-11-25 17:55:10,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:55:10,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:55:10,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 992 transitions. [2022-11-25 17:55:10,912 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2022-11-25 17:55:10,912 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 992 transitions. [2022-11-25 17:55:10,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 992 transitions. [2022-11-25 17:55:10,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:55:10,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 992 transitions. [2022-11-25 17:55:10,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 165.33333333333334) internal successors, (992), 6 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:10,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 320.0) internal successors, (2240), 7 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:10,920 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 320.0) internal successors, (2240), 7 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:10,920 INFO L175 Difference]: Start difference. First operand has 55 places, 39 transitions, 161 flow. Second operand 6 states and 992 transitions. [2022-11-25 17:55:10,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 117 transitions, 661 flow [2022-11-25 17:55:10,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 117 transitions, 655 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:55:10,978 INFO L231 Difference]: Finished difference. Result has 62 places, 42 transitions, 206 flow [2022-11-25 17:55:10,978 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=206, PETRI_PLACES=62, PETRI_TRANSITIONS=42} [2022-11-25 17:55:10,979 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2022-11-25 17:55:10,979 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 42 transitions, 206 flow [2022-11-25 17:55:10,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 149.71428571428572) internal successors, (1048), 7 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:10,980 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:55:10,980 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:55:10,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 17:55:11,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:55:11,186 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:55:11,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:55:11,187 INFO L85 PathProgramCache]: Analyzing trace with hash 2019067201, now seen corresponding path program 1 times [2022-11-25 17:55:11,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:55:11,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013578309] [2022-11-25 17:55:11,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:55:11,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:55:11,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:55:11,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:55:11,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:55:11,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013578309] [2022-11-25 17:55:11,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013578309] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:55:11,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19328783] [2022-11-25 17:55:11,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:55:11,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:55:11,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:55:11,259 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:55:11,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 17:55:11,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:55:11,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:55:11,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:55:11,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:55:11,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:55:11,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:55:11,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19328783] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:55:11,402 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:55:11,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-25 17:55:11,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720114887] [2022-11-25 17:55:11,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:55:11,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:55:11,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:55:11,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:55:11,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:55:11,427 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 320 [2022-11-25 17:55:11,428 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 42 transitions, 206 flow. Second operand has 7 states, 7 states have (on average 150.0) internal successors, (1050), 7 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:11,428 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:55:11,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 320 [2022-11-25 17:55:11,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:55:15,170 INFO L130 PetriNetUnfolder]: 24577/33320 cut-off events. [2022-11-25 17:55:15,170 INFO L131 PetriNetUnfolder]: For 63963/65216 co-relation queries the response was YES. [2022-11-25 17:55:15,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99816 conditions, 33320 events. 24577/33320 cut-off events. For 63963/65216 co-relation queries the response was YES. Maximal size of possible extension queue 1748. Compared 212550 event pairs, 3548 based on Foata normal form. 1232/25294 useless extension candidates. Maximal degree in co-relation 99795. Up to 9454 conditions per place. [2022-11-25 17:55:15,392 INFO L137 encePairwiseOnDemand]: 316/320 looper letters, 148 selfloop transitions, 9 changer transitions 0/160 dead transitions. [2022-11-25 17:55:15,392 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 160 transitions, 1137 flow [2022-11-25 17:55:15,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:55:15,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:55:15,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1143 transitions. [2022-11-25 17:55:15,397 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5102678571428572 [2022-11-25 17:55:15,397 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1143 transitions. [2022-11-25 17:55:15,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1143 transitions. [2022-11-25 17:55:15,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:55:15,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1143 transitions. [2022-11-25 17:55:15,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 163.28571428571428) internal successors, (1143), 7 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:15,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 320.0) internal successors, (2560), 8 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:15,407 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 320.0) internal successors, (2560), 8 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:15,407 INFO L175 Difference]: Start difference. First operand has 62 places, 42 transitions, 206 flow. Second operand 7 states and 1143 transitions. [2022-11-25 17:55:15,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 160 transitions, 1137 flow [2022-11-25 17:55:15,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 160 transitions, 1087 flow, removed 18 selfloop flow, removed 1 redundant places. [2022-11-25 17:55:15,490 INFO L231 Difference]: Finished difference. Result has 70 places, 48 transitions, 255 flow [2022-11-25 17:55:15,491 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=255, PETRI_PLACES=70, PETRI_TRANSITIONS=48} [2022-11-25 17:55:15,491 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 34 predicate places. [2022-11-25 17:55:15,492 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 48 transitions, 255 flow [2022-11-25 17:55:15,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 150.0) internal successors, (1050), 7 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:15,492 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:55:15,493 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:55:15,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 17:55:15,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 17:55:15,701 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:55:15,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:55:15,701 INFO L85 PathProgramCache]: Analyzing trace with hash 2019067183, now seen corresponding path program 1 times [2022-11-25 17:55:15,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:55:15,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569804330] [2022-11-25 17:55:15,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:55:15,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:55:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:55:15,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:55:15,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:55:15,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569804330] [2022-11-25 17:55:15,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569804330] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:55:15,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018198202] [2022-11-25 17:55:15,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:55:15,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:55:15,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:55:15,798 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:55:15,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 17:55:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:55:15,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:55:15,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:55:15,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:55:15,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:55:15,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018198202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:55:15,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:55:15,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-25 17:55:15,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096027222] [2022-11-25 17:55:15,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:55:15,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:55:15,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:55:15,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:55:15,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:55:15,936 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 320 [2022-11-25 17:55:15,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 48 transitions, 255 flow. Second operand has 4 states, 4 states have (on average 150.25) internal successors, (601), 4 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:15,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:55:15,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 320 [2022-11-25 17:55:15,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:55:19,767 INFO L130 PetriNetUnfolder]: 21220/29361 cut-off events. [2022-11-25 17:55:19,768 INFO L131 PetriNetUnfolder]: For 56981/58138 co-relation queries the response was YES. [2022-11-25 17:55:19,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93556 conditions, 29361 events. 21220/29361 cut-off events. For 56981/58138 co-relation queries the response was YES. Maximal size of possible extension queue 1596. Compared 198015 event pairs, 672 based on Foata normal form. 2349/25854 useless extension candidates. Maximal degree in co-relation 93531. Up to 22659 conditions per place. [2022-11-25 17:55:20,008 INFO L137 encePairwiseOnDemand]: 317/320 looper letters, 82 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2022-11-25 17:55:20,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 87 transitions, 613 flow [2022-11-25 17:55:20,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:55:20,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:55:20,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 645 transitions. [2022-11-25 17:55:20,012 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.50390625 [2022-11-25 17:55:20,012 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 645 transitions. [2022-11-25 17:55:20,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 645 transitions. [2022-11-25 17:55:20,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:55:20,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 645 transitions. [2022-11-25 17:55:20,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 161.25) internal successors, (645), 4 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:20,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 320.0) internal successors, (1600), 5 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:20,020 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 320.0) internal successors, (1600), 5 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:20,020 INFO L175 Difference]: Start difference. First operand has 70 places, 48 transitions, 255 flow. Second operand 4 states and 645 transitions. [2022-11-25 17:55:20,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 87 transitions, 613 flow [2022-11-25 17:55:20,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 87 transitions, 605 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-11-25 17:55:20,337 INFO L231 Difference]: Finished difference. Result has 70 places, 44 transitions, 224 flow [2022-11-25 17:55:20,337 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=224, PETRI_PLACES=70, PETRI_TRANSITIONS=44} [2022-11-25 17:55:20,338 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 34 predicate places. [2022-11-25 17:55:20,338 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 44 transitions, 224 flow [2022-11-25 17:55:20,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 150.25) internal successors, (601), 4 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:20,339 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:55:20,339 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:55:20,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-25 17:55:20,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-25 17:55:20,545 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:55:20,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:55:20,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1828852541, now seen corresponding path program 1 times [2022-11-25 17:55:20,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:55:20,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873427753] [2022-11-25 17:55:20,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:55:20,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:55:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:55:20,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:55:20,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:55:20,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873427753] [2022-11-25 17:55:20,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873427753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:55:20,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:55:20,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:55:20,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762080707] [2022-11-25 17:55:20,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:55:20,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:55:20,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:55:20,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:55:20,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:55:20,814 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 320 [2022-11-25 17:55:20,815 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 44 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 148.5) internal successors, (594), 4 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:20,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:55:20,816 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 320 [2022-11-25 17:55:20,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:55:23,077 INFO L130 PetriNetUnfolder]: 12939/19132 cut-off events. [2022-11-25 17:55:23,077 INFO L131 PetriNetUnfolder]: For 38436/40234 co-relation queries the response was YES. [2022-11-25 17:55:23,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60405 conditions, 19132 events. 12939/19132 cut-off events. For 38436/40234 co-relation queries the response was YES. Maximal size of possible extension queue 833. Compared 127666 event pairs, 2935 based on Foata normal form. 1798/19540 useless extension candidates. Maximal degree in co-relation 60379. Up to 13605 conditions per place. [2022-11-25 17:55:23,227 INFO L137 encePairwiseOnDemand]: 317/320 looper letters, 61 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2022-11-25 17:55:23,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 66 transitions, 477 flow [2022-11-25 17:55:23,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:55:23,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:55:23,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 619 transitions. [2022-11-25 17:55:23,231 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48359375 [2022-11-25 17:55:23,231 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 619 transitions. [2022-11-25 17:55:23,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 619 transitions. [2022-11-25 17:55:23,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:55:23,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 619 transitions. [2022-11-25 17:55:23,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 154.75) internal successors, (619), 4 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:23,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 320.0) internal successors, (1600), 5 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:23,236 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 320.0) internal successors, (1600), 5 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:23,236 INFO L175 Difference]: Start difference. First operand has 70 places, 44 transitions, 224 flow. Second operand 4 states and 619 transitions. [2022-11-25 17:55:23,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 66 transitions, 477 flow [2022-11-25 17:55:23,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 66 transitions, 473 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:55:23,339 INFO L231 Difference]: Finished difference. Result has 70 places, 43 transitions, 223 flow [2022-11-25 17:55:23,339 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=223, PETRI_PLACES=70, PETRI_TRANSITIONS=43} [2022-11-25 17:55:23,340 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 34 predicate places. [2022-11-25 17:55:23,340 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 43 transitions, 223 flow [2022-11-25 17:55:23,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.5) internal successors, (594), 4 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:23,341 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:55:23,341 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:55:23,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 17:55:23,342 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:55:23,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:55:23,342 INFO L85 PathProgramCache]: Analyzing trace with hash -107863723, now seen corresponding path program 1 times [2022-11-25 17:55:23,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:55:23,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390765712] [2022-11-25 17:55:23,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:55:23,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:55:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:55:23,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:23,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:55:23,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390765712] [2022-11-25 17:55:23,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390765712] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:55:23,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491300264] [2022-11-25 17:55:23,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:55:23,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:55:23,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:55:23,487 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:55:23,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 17:55:23,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:55:23,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:55:23,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:55:23,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:55:23,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:55:23,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491300264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:55:23,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:55:23,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2022-11-25 17:55:23,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084397052] [2022-11-25 17:55:23,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:55:23,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:55:23,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:55:23,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:55:23,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:55:23,688 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 320 [2022-11-25 17:55:23,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 43 transitions, 223 flow. Second operand has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:23,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:55:23,690 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 320 [2022-11-25 17:55:23,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:55:25,560 INFO L130 PetriNetUnfolder]: 10919/15636 cut-off events. [2022-11-25 17:55:25,560 INFO L131 PetriNetUnfolder]: For 43771/45220 co-relation queries the response was YES. [2022-11-25 17:55:25,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43206 conditions, 15636 events. 10919/15636 cut-off events. For 43771/45220 co-relation queries the response was YES. Maximal size of possible extension queue 819. Compared 99266 event pairs, 7742 based on Foata normal form. 3581/16640 useless extension candidates. Maximal degree in co-relation 43179. Up to 15568 conditions per place. [2022-11-25 17:55:25,648 INFO L137 encePairwiseOnDemand]: 317/320 looper letters, 33 selfloop transitions, 1 changer transitions 3/41 dead transitions. [2022-11-25 17:55:25,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 41 transitions, 273 flow [2022-11-25 17:55:25,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:55:25,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:55:25,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 466 transitions. [2022-11-25 17:55:25,651 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48541666666666666 [2022-11-25 17:55:25,651 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 466 transitions. [2022-11-25 17:55:25,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 466 transitions. [2022-11-25 17:55:25,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:55:25,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 466 transitions. [2022-11-25 17:55:25,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:25,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 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) [2022-11-25 17:55:25,654 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 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) [2022-11-25 17:55:25,654 INFO L175 Difference]: Start difference. First operand has 70 places, 43 transitions, 223 flow. Second operand 3 states and 466 transitions. [2022-11-25 17:55:25,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 41 transitions, 273 flow [2022-11-25 17:55:25,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 41 transitions, 244 flow, removed 4 selfloop flow, removed 10 redundant places. [2022-11-25 17:55:25,699 INFO L231 Difference]: Finished difference. Result has 60 places, 38 transitions, 165 flow [2022-11-25 17:55:25,700 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=60, PETRI_TRANSITIONS=38} [2022-11-25 17:55:25,700 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 24 predicate places. [2022-11-25 17:55:25,700 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 38 transitions, 165 flow [2022-11-25 17:55:25,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:25,701 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:55:25,701 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:55:25,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 17:55:25,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-25 17:55:25,908 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:55:25,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:55:25,908 INFO L85 PathProgramCache]: Analyzing trace with hash -984844602, now seen corresponding path program 2 times [2022-11-25 17:55:25,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:55:25,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012148584] [2022-11-25 17:55:25,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:55:25,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:55:25,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:55:26,052 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:55:26,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:55:26,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012148584] [2022-11-25 17:55:26,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012148584] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:55:26,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349093349] [2022-11-25 17:55:26,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:55:26,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:55:26,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:55:26,055 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:55:26,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 17:55:26,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 17:55:26,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:55:26,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:55:26,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:55:26,227 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 17:55:26,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:55:26,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349093349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:55:26,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:55:26,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2022-11-25 17:55:26,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030237101] [2022-11-25 17:55:26,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:55:26,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:55:26,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:55:26,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:55:26,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:55:26,244 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 320 [2022-11-25 17:55:26,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 38 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:26,245 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:55:26,245 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 320 [2022-11-25 17:55:26,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:55:27,141 INFO L130 PetriNetUnfolder]: 4683/6646 cut-off events. [2022-11-25 17:55:27,142 INFO L131 PetriNetUnfolder]: For 9323/10172 co-relation queries the response was YES. [2022-11-25 17:55:27,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19227 conditions, 6646 events. 4683/6646 cut-off events. For 9323/10172 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 36038 event pairs, 3188 based on Foata normal form. 1223/6843 useless extension candidates. Maximal degree in co-relation 19208. Up to 6604 conditions per place. [2022-11-25 17:55:27,164 INFO L137 encePairwiseOnDemand]: 318/320 looper letters, 0 selfloop transitions, 0 changer transitions 37/37 dead transitions. [2022-11-25 17:55:27,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 37 transitions, 221 flow [2022-11-25 17:55:27,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:55:27,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:55:27,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 461 transitions. [2022-11-25 17:55:27,167 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48020833333333335 [2022-11-25 17:55:27,167 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 461 transitions. [2022-11-25 17:55:27,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 461 transitions. [2022-11-25 17:55:27,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:55:27,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 461 transitions. [2022-11-25 17:55:27,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:27,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 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) [2022-11-25 17:55:27,173 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 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) [2022-11-25 17:55:27,173 INFO L175 Difference]: Start difference. First operand has 60 places, 38 transitions, 165 flow. Second operand 3 states and 461 transitions. [2022-11-25 17:55:27,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 37 transitions, 221 flow [2022-11-25 17:55:27,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 37 transitions, 202 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-11-25 17:55:27,193 INFO L231 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow [2022-11-25 17:55:27,194 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=53, PETRI_TRANSITIONS=0} [2022-11-25 17:55:27,194 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 17 predicate places. [2022-11-25 17:55:27,195 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 0 transitions, 0 flow [2022-11-25 17:55:27,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:27,198 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2022-11-25 17:55:27,199 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-25 17:55:27,199 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-25 17:55:27,199 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-25 17:55:27,200 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-25 17:55:27,200 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-25 17:55:27,200 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-25 17:55:27,200 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-25 17:55:27,200 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2022-11-25 17:55:27,201 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2022-11-25 17:55:27,201 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2022-11-25 17:55:27,201 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-25 17:55:27,201 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-25 17:55:27,201 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-25 17:55:27,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-25 17:55:27,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-25 17:55:27,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-25 17:55:27,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 17:55:27,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-25 17:55:27,403 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:55:27,409 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 17:55:27,409 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:55:27,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:55:27 BasicIcfg [2022-11-25 17:55:27,413 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:55:27,413 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:55:27,413 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:55:27,413 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:55:27,414 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:54:46" (3/4) ... [2022-11-25 17:55:27,417 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 17:55:27,422 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-25 17:55:27,423 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-25 17:55:27,423 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-25 17:55:27,431 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-11-25 17:55:27,431 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 17:55:27,431 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-25 17:55:27,431 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 17:55:27,466 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 17:55:27,466 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:55:27,467 INFO L158 Benchmark]: Toolchain (without parser) took 42258.36ms. Allocated memory was 163.6MB in the beginning and 9.5GB in the end (delta: 9.3GB). Free memory was 125.9MB in the beginning and 8.5GB in the end (delta: -8.4GB). Peak memory consumption was 920.0MB. Max. memory is 16.1GB. [2022-11-25 17:55:27,467 INFO L158 Benchmark]: CDTParser took 2.32ms. Allocated memory is still 130.0MB. Free memory is still 97.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:55:27,468 INFO L158 Benchmark]: CACSL2BoogieTranslator took 355.18ms. Allocated memory is still 163.6MB. Free memory was 125.7MB in the beginning and 127.0MB in the end (delta: -1.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 17:55:27,468 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.02ms. Allocated memory is still 163.6MB. Free memory was 127.0MB in the beginning and 125.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:55:27,468 INFO L158 Benchmark]: Boogie Preprocessor took 52.48ms. Allocated memory is still 163.6MB. Free memory was 125.0MB in the beginning and 123.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:55:27,469 INFO L158 Benchmark]: RCFGBuilder took 736.49ms. Allocated memory is still 163.6MB. Free memory was 123.5MB in the beginning and 101.7MB in the end (delta: 21.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-25 17:55:27,469 INFO L158 Benchmark]: TraceAbstraction took 40970.91ms. Allocated memory was 163.6MB in the beginning and 9.5GB in the end (delta: 9.3GB). Free memory was 101.1MB in the beginning and 8.5GB in the end (delta: -8.4GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2022-11-25 17:55:27,470 INFO L158 Benchmark]: Witness Printer took 53.06ms. Allocated memory is still 9.5GB. Free memory was 8.5GB in the beginning and 8.5GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:55:27,472 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.32ms. Allocated memory is still 130.0MB. Free memory is still 97.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 355.18ms. Allocated memory is still 163.6MB. Free memory was 125.7MB in the beginning and 127.0MB in the end (delta: -1.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.02ms. Allocated memory is still 163.6MB. Free memory was 127.0MB in the beginning and 125.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.48ms. Allocated memory is still 163.6MB. Free memory was 125.0MB in the beginning and 123.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 736.49ms. Allocated memory is still 163.6MB. Free memory was 123.5MB in the beginning and 101.7MB in the end (delta: 21.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 40970.91ms. Allocated memory was 163.6MB in the beginning and 9.5GB in the end (delta: 9.3GB). Free memory was 101.1MB in the beginning and 8.5GB in the end (delta: -8.4GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Witness Printer took 53.06ms. Allocated memory is still 9.5GB. Free memory was 8.5GB in the beginning and 8.5GB 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: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.1s, 143 PlacesBefore, 36 PlacesAfterwards, 144 TransitionsBefore, 30 TransitionsAfterwards, 2184 CoEnabledTransitionPairs, 7 FixpointIterations, 79 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 15 TrivialYvCompositions, 6 ConcurrentYvCompositions, 7 ChoiceCompositions, 152 TotalNumberOfCompositions, 2545 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2230, independent: 2205, independent conditional: 0, independent unconditional: 2205, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1397, independent: 1386, independent conditional: 0, independent unconditional: 1386, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1397, independent: 1386, independent conditional: 0, independent unconditional: 1386, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 11, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 85, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 85, dependent conditional: 0, dependent unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2230, independent: 819, independent conditional: 0, independent unconditional: 819, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 1397, unknown conditional: 0, unknown unconditional: 1397] , Statistics on independence cache: Total cache size (in pairs): 71, Positive cache size: 69, Positive conditional cache size: 0, Positive unconditional cache size: 69, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: 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, 199 locations, 17 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: 40.8s, OverallIterations: 14, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 25.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1334 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1151 mSDsluCounter, 255 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 233 mSDsCounter, 67 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2075 IncrementalHoareTripleChecker+Invalid, 2142 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 67 mSolverCounterUnsat, 22 mSDtfsCounter, 2075 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=255occurred in iteration=10, InterpolantAutomatonStates: 64, 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, 0.5s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 173 NumberOfCodeBlocks, 164 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 172 ConstructedInterpolants, 0 QuantifiedInterpolants, 447 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1412 ConjunctsInSsa, 48 ConjunctsInUnsatCore, 28 InterpolantComputations, 10 PerfectInterpolantSequences, 47/85 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 17:55:27,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11055d6-67ae-4dfe-84f5-4e31026bf3d7/bin/uautomizer-ZsLfNo2U6R/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