./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8 --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 f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d --- 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-2329fc7 [2022-12-13 19:18:19,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:18:19,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:18:19,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:18:19,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:18:19,414 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:18:19,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:18:19,417 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:18:19,419 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:18:19,420 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:18:19,421 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:18:19,422 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:18:19,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:18:19,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:18:19,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:18:19,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:18:19,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:18:19,428 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:18:19,429 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:18:19,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:18:19,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:18:19,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:18:19,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:18:19,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:18:19,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:18:19,440 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:18:19,440 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:18:19,441 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:18:19,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:18:19,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:18:19,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:18:19,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:18:19,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:18:19,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:18:19,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:18:19,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:18:19,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:18:19,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:18:19,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:18:19,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:18:19,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:18:19,450 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 19:18:19,470 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:18:19,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:18:19,470 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:18:19,471 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:18:19,471 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:18:19,471 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:18:19,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:18:19,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:18:19,472 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:18:19,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:18:19,473 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:18:19,473 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:18:19,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:18:19,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:18:19,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:18:19,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:18:19,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:18:19,474 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:18:19,474 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 19:18:19,474 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:18:19,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:18:19,475 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:18:19,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:18:19,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:18:19,475 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:18:19,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:18:19,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:18:19,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:18:19,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:18:19,476 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:18:19,477 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:18:19,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:18:19,477 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:18:19,477 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:18:19,477 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:18:19,478 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:18:19,478 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:18:19,478 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_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d [2022-12-13 19:18:19,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:18:19,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:18:19,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:18:19,687 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:18:19,687 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:18:19,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2022-12-13 19:18:22,237 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:18:22,395 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:18:22,395 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2022-12-13 19:18:22,400 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/data/0ed583265/b4fd61cb79854364aec5cf4d2913a1af/FLAGd437c9d04 [2022-12-13 19:18:22,814 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/data/0ed583265/b4fd61cb79854364aec5cf4d2913a1af [2022-12-13 19:18:22,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:18:22,817 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:18:22,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:18:22,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:18:22,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:18:22,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:18:22" (1/1) ... [2022-12-13 19:18:22,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dc49d81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:18:22, skipping insertion in model container [2022-12-13 19:18:22,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:18:22" (1/1) ... [2022-12-13 19:18:22,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:18:22,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:18:22,952 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:18:22,957 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:18:22,957 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:18:22,958 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:18:22,958 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:18:22,959 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:18:22,959 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:18:22,960 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:18:22,961 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:18:22,962 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:18:22,963 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:18:22,964 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:18:22,968 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:18:22,970 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:18:22,970 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:18:22,971 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:18:22,973 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:18:22,974 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:18:22,975 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:18:22,976 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:18:22,977 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:18:22,979 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:18:22,979 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:18:22,981 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:18:22,991 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_af469062-5a59-43c2-a5cc-b4535519d5f7/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-12-13 19:18:22,997 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:18:23,006 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:18:23,019 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:18:23,021 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:18:23,021 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:18:23,022 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:18:23,023 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:18:23,023 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:18:23,024 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:18:23,025 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:18:23,025 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:18:23,026 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:18:23,027 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:18:23,028 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:18:23,029 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:18:23,030 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:18:23,030 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:18:23,031 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:18:23,032 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:18:23,033 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:18:23,034 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:18:23,034 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:18:23,035 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:18:23,036 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:18:23,036 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:18:23,037 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:18:23,044 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_af469062-5a59-43c2-a5cc-b4535519d5f7/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-12-13 19:18:23,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:18:23,062 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:18:23,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:18:23 WrapperNode [2022-12-13 19:18:23,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:18:23,064 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:18:23,064 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:18:23,064 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:18:23,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:18:23" (1/1) ... [2022-12-13 19:18:23,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:18:23" (1/1) ... [2022-12-13 19:18:23,106 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 488 [2022-12-13 19:18:23,106 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:18:23,106 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:18:23,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:18:23,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:18:23,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:18:23" (1/1) ... [2022-12-13 19:18:23,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:18:23" (1/1) ... [2022-12-13 19:18:23,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:18:23" (1/1) ... [2022-12-13 19:18:23,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:18:23" (1/1) ... [2022-12-13 19:18:23,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:18:23" (1/1) ... [2022-12-13 19:18:23,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:18:23" (1/1) ... [2022-12-13 19:18:23,148 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:18:23" (1/1) ... [2022-12-13 19:18:23,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:18:23" (1/1) ... [2022-12-13 19:18:23,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:18:23,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:18:23,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:18:23,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:18:23,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:18:23" (1/1) ... [2022-12-13 19:18:23,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:18:23,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:18:23,187 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:18:23,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:18:23,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:18:23,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:18:23,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 19:18:23,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 19:18:23,218 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 19:18:23,218 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 19:18:23,218 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 19:18:23,218 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 19:18:23,218 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 19:18:23,218 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 19:18:23,218 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-13 19:18:23,218 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-13 19:18:23,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:18:23,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 19:18:23,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 19:18:23,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 19:18:23,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:18:23,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:18:23,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:18:23,220 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 19:18:23,321 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:18:23,323 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:18:23,839 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:18:24,120 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:18:24,120 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-12-13 19:18:24,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:18:24 BoogieIcfgContainer [2022-12-13 19:18:24,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:18:24,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:18:24,125 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:18:24,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:18:24,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:18:22" (1/3) ... [2022-12-13 19:18:24,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1363a61b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:18:24, skipping insertion in model container [2022-12-13 19:18:24,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:18:23" (2/3) ... [2022-12-13 19:18:24,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1363a61b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:18:24, skipping insertion in model container [2022-12-13 19:18:24,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:18:24" (3/3) ... [2022-12-13 19:18:24,131 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2022-12-13 19:18:24,140 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 19:18:24,149 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:18:24,149 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-12-13 19:18:24,149 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 19:18:24,278 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 19:18:24,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 355 places, 367 transitions, 766 flow [2022-12-13 19:18:24,437 INFO L130 PetriNetUnfolder]: 25/363 cut-off events. [2022-12-13 19:18:24,437 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 19:18:24,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 363 events. 25/363 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 337 event pairs, 0 based on Foata normal form. 0/306 useless extension candidates. Maximal degree in co-relation 320. Up to 2 conditions per place. [2022-12-13 19:18:24,444 INFO L82 GeneralOperation]: Start removeDead. Operand has 355 places, 367 transitions, 766 flow [2022-12-13 19:18:24,451 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 329 places, 340 transitions, 701 flow [2022-12-13 19:18:24,455 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 19:18:24,466 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 329 places, 340 transitions, 701 flow [2022-12-13 19:18:24,469 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 329 places, 340 transitions, 701 flow [2022-12-13 19:18:24,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 329 places, 340 transitions, 701 flow [2022-12-13 19:18:24,518 INFO L130 PetriNetUnfolder]: 24/340 cut-off events. [2022-12-13 19:18:24,518 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 19:18:24,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 340 events. 24/340 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 334 event pairs, 0 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 320. Up to 2 conditions per place. [2022-12-13 19:18:24,521 INFO L119 LiptonReduction]: Number of co-enabled transitions 5184 [2022-12-13 19:18:36,399 INFO L134 LiptonReduction]: Checked pairs total: 19210 [2022-12-13 19:18:36,399 INFO L136 LiptonReduction]: Total number of compositions: 344 [2022-12-13 19:18:36,409 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:18:36,413 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;@513d6d07, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:18:36,413 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2022-12-13 19:18:36,415 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 19:18:36,415 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:18:36,416 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:18:36,416 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 19:18:36,416 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 19:18:36,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:18:36,420 INFO L85 PathProgramCache]: Analyzing trace with hash 61190, now seen corresponding path program 1 times [2022-12-13 19:18:36,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:18:36,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347977598] [2022-12-13 19:18:36,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:18:36,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:18:36,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:18:36,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:18:36,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:18:36,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347977598] [2022-12-13 19:18:36,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347977598] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:18:36,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:18:36,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:18:36,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274426375] [2022-12-13 19:18:36,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:18:36,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:18:36,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:18:36,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:18:36,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:18:36,711 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 711 [2022-12-13 19:18:36,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 71 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:18:36,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:18:36,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 711 [2022-12-13 19:18:36,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:18:40,676 INFO L130 PetriNetUnfolder]: 28951/37701 cut-off events. [2022-12-13 19:18:40,676 INFO L131 PetriNetUnfolder]: For 1102/1102 co-relation queries the response was YES. [2022-12-13 19:18:40,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77334 conditions, 37701 events. 28951/37701 cut-off events. For 1102/1102 co-relation queries the response was YES. Maximal size of possible extension queue 1396. Compared 188503 event pairs, 23504 based on Foata normal form. 0/18869 useless extension candidates. Maximal degree in co-relation 36140. Up to 18856 conditions per place. [2022-12-13 19:18:40,838 INFO L137 encePairwiseOnDemand]: 683/711 looper letters, 101 selfloop transitions, 8 changer transitions 0/109 dead transitions. [2022-12-13 19:18:40,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 109 transitions, 478 flow [2022-12-13 19:18:40,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:18:40,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:18:40,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1020 transitions. [2022-12-13 19:18:40,850 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4781997187060478 [2022-12-13 19:18:40,851 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1020 transitions. [2022-12-13 19:18:40,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1020 transitions. [2022-12-13 19:18:40,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:18:40,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1020 transitions. [2022-12-13 19:18:40,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 340.0) internal successors, (1020), 3 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:18:40,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 711.0) internal successors, (2844), 4 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:18:40,871 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 711.0) internal successors, (2844), 4 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:18:40,872 INFO L175 Difference]: Start difference. First operand has 76 places, 71 transitions, 163 flow. Second operand 3 states and 1020 transitions. [2022-12-13 19:18:40,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 109 transitions, 478 flow [2022-12-13 19:18:40,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 109 transitions, 452 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-12-13 19:18:40,964 INFO L231 Difference]: Finished difference. Result has 61 places, 66 transitions, 202 flow [2022-12-13 19:18:40,965 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=711, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=61, PETRI_TRANSITIONS=66} [2022-12-13 19:18:40,968 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, -15 predicate places. [2022-12-13 19:18:40,968 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 66 transitions, 202 flow [2022-12-13 19:18:40,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:18:40,969 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:18:40,969 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 19:18:40,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 19:18:40,969 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 19:18:40,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:18:40,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1899366, now seen corresponding path program 1 times [2022-12-13 19:18:40,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:18:40,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479432327] [2022-12-13 19:18:40,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:18:40,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:18:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:18:41,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:18:41,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:18:41,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479432327] [2022-12-13 19:18:41,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479432327] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:18:41,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901078899] [2022-12-13 19:18:41,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:18:41,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:18:41,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:18:41,047 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:18:41,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 19:18:41,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:18:41,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:18:41,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:18:41,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:18:41,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:18:41,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901078899] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:18:41,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:18:41,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-12-13 19:18:41,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403348808] [2022-12-13 19:18:41,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:18:41,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:18:41,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:18:41,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:18:41,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:18:41,216 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 711 [2022-12-13 19:18:41,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 66 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 293.75) internal successors, (1175), 4 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:18:41,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:18:41,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 711 [2022-12-13 19:18:41,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:18:44,940 INFO L130 PetriNetUnfolder]: 28951/37697 cut-off events. [2022-12-13 19:18:44,940 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-12-13 19:18:44,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76883 conditions, 37697 events. 28951/37697 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 1396. Compared 188471 event pairs, 23504 based on Foata normal form. 0/18877 useless extension candidates. Maximal degree in co-relation 38416. Up to 18851 conditions per place. [2022-12-13 19:18:45,058 INFO L137 encePairwiseOnDemand]: 699/711 looper letters, 97 selfloop transitions, 8 changer transitions 0/105 dead transitions. [2022-12-13 19:18:45,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 105 transitions, 490 flow [2022-12-13 19:18:45,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:18:45,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 19:18:45,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1281 transitions. [2022-12-13 19:18:45,061 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45042194092827004 [2022-12-13 19:18:45,061 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1281 transitions. [2022-12-13 19:18:45,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1281 transitions. [2022-12-13 19:18:45,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:18:45,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1281 transitions. [2022-12-13 19:18:45,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 320.25) internal successors, (1281), 4 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:18:45,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 711.0) internal successors, (3555), 5 states have internal predecessors, (3555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:18:45,067 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 711.0) internal successors, (3555), 5 states have internal predecessors, (3555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:18:45,067 INFO L175 Difference]: Start difference. First operand has 61 places, 66 transitions, 202 flow. Second operand 4 states and 1281 transitions. [2022-12-13 19:18:45,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 105 transitions, 490 flow [2022-12-13 19:18:45,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 105 transitions, 474 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:18:45,069 INFO L231 Difference]: Finished difference. Result has 58 places, 62 transitions, 186 flow [2022-12-13 19:18:45,069 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=711, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=58, PETRI_TRANSITIONS=62} [2022-12-13 19:18:45,070 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, -18 predicate places. [2022-12-13 19:18:45,070 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 62 transitions, 186 flow [2022-12-13 19:18:45,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 293.75) internal successors, (1175), 4 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:18:45,070 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:18:45,070 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 19:18:45,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 19:18:45,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:18:45,271 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 19:18:45,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:18:45,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1899367, now seen corresponding path program 1 times [2022-12-13 19:18:45,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:18:45,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782365211] [2022-12-13 19:18:45,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:18:45,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:18:45,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:18:45,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:18:45,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:18:45,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782365211] [2022-12-13 19:18:45,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782365211] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:18:45,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047326775] [2022-12-13 19:18:45,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:18:45,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:18:45,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:18:45,334 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:18:45,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 19:18:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:18:45,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:18:45,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:18:45,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:18:45,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:18:45,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:18:45,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047326775] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:18:45,438 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:18:45,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 19:18:45,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275386476] [2022-12-13 19:18:45,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:18:45,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:18:45,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:18:45,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:18:45,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:18:45,516 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 711 [2022-12-13 19:18:45,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 62 transitions, 186 flow. Second operand has 7 states, 7 states have (on average 294.14285714285717) internal successors, (2059), 7 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:18:45,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:18:45,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 711 [2022-12-13 19:18:45,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:18:55,859 INFO L130 PetriNetUnfolder]: 72376/94235 cut-off events. [2022-12-13 19:18:55,860 INFO L131 PetriNetUnfolder]: For 125/125 co-relation queries the response was YES. [2022-12-13 19:18:55,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192176 conditions, 94235 events. 72376/94235 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 3119. Compared 522446 event pairs, 58760 based on Foata normal form. 0/47191 useless extension candidates. Maximal degree in co-relation 153643. Up to 18855 conditions per place. [2022-12-13 19:18:56,210 INFO L137 encePairwiseOnDemand]: 699/711 looper letters, 226 selfloop transitions, 29 changer transitions 0/255 dead transitions. [2022-12-13 19:18:56,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 255 transitions, 1174 flow [2022-12-13 19:18:56,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:18:56,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 19:18:56,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2025 transitions. [2022-12-13 19:18:56,214 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47468354430379744 [2022-12-13 19:18:56,214 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2025 transitions. [2022-12-13 19:18:56,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2025 transitions. [2022-12-13 19:18:56,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:18:56,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2025 transitions. [2022-12-13 19:18:56,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 337.5) internal successors, (2025), 6 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:18:56,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 711.0) internal successors, (4977), 7 states have internal predecessors, (4977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:18:56,240 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 711.0) internal successors, (4977), 7 states have internal predecessors, (4977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:18:56,240 INFO L175 Difference]: Start difference. First operand has 58 places, 62 transitions, 186 flow. Second operand 6 states and 2025 transitions. [2022-12-13 19:18:56,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 255 transitions, 1174 flow [2022-12-13 19:18:56,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 255 transitions, 1156 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:18:56,327 INFO L231 Difference]: Finished difference. Result has 64 places, 83 transitions, 393 flow [2022-12-13 19:18:56,327 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=711, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=393, PETRI_PLACES=64, PETRI_TRANSITIONS=83} [2022-12-13 19:18:56,328 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, -12 predicate places. [2022-12-13 19:18:56,328 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 83 transitions, 393 flow [2022-12-13 19:18:56,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 294.14285714285717) internal successors, (2059), 7 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:18:56,330 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:18:56,330 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 19:18:56,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 19:18:56,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:18:56,532 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 19:18:56,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:18:56,533 INFO L85 PathProgramCache]: Analyzing trace with hash 751896327, now seen corresponding path program 2 times [2022-12-13 19:18:56,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:18:56,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408509049] [2022-12-13 19:18:56,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:18:56,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:18:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:18:56,714 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:18:56,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:18:56,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408509049] [2022-12-13 19:18:56,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408509049] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:18:56,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625452250] [2022-12-13 19:18:56,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:18:56,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:18:56,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:18:56,716 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:18:56,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 19:18:56,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 19:18:56,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:18:56,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 19:18:56,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:18:56,811 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 19:18:56,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:18:56,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625452250] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:18:56,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:18:56,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 19:18:56,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726489584] [2022-12-13 19:18:56,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:18:56,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:18:56,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:18:56,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:18:56,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:18:56,849 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 711 [2022-12-13 19:18:56,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 83 transitions, 393 flow. Second operand has 3 states, 3 states have (on average 298.0) internal successors, (894), 3 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:18:56,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:18:56,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 711 [2022-12-13 19:18:56,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:19:05,317 INFO L130 PetriNetUnfolder]: 72376/94231 cut-off events. [2022-12-13 19:19:05,317 INFO L131 PetriNetUnfolder]: For 132/132 co-relation queries the response was YES. [2022-12-13 19:19:05,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192208 conditions, 94231 events. 72376/94231 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 3227. Compared 525291 event pairs, 58760 based on Foata normal form. 4/47195 useless extension candidates. Maximal degree in co-relation 153647. Up to 94231 conditions per place. [2022-12-13 19:19:05,687 INFO L137 encePairwiseOnDemand]: 706/711 looper letters, 78 selfloop transitions, 1 changer transitions 0/79 dead transitions. [2022-12-13 19:19:05,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 79 transitions, 511 flow [2022-12-13 19:19:05,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:19:05,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:19:05,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 946 transitions. [2022-12-13 19:19:05,690 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4435067979371777 [2022-12-13 19:19:05,690 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 946 transitions. [2022-12-13 19:19:05,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 946 transitions. [2022-12-13 19:19:05,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:19:05,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 946 transitions. [2022-12-13 19:19:05,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 315.3333333333333) internal successors, (946), 3 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:05,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 711.0) internal successors, (2844), 4 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:05,695 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 711.0) internal successors, (2844), 4 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:05,695 INFO L175 Difference]: Start difference. First operand has 64 places, 83 transitions, 393 flow. Second operand 3 states and 946 transitions. [2022-12-13 19:19:05,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 79 transitions, 511 flow [2022-12-13 19:19:05,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 79 transitions, 412 flow, removed 16 selfloop flow, removed 5 redundant places. [2022-12-13 19:19:05,697 INFO L231 Difference]: Finished difference. Result has 57 places, 79 transitions, 256 flow [2022-12-13 19:19:05,697 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=711, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=57, PETRI_TRANSITIONS=79} [2022-12-13 19:19:05,698 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, -19 predicate places. [2022-12-13 19:19:05,698 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 79 transitions, 256 flow [2022-12-13 19:19:05,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 298.0) internal successors, (894), 3 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:05,699 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:19:05,699 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:19:05,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 19:19:05,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:19:05,900 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 19:19:05,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:19:05,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1310210155, now seen corresponding path program 1 times [2022-12-13 19:19:05,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:19:05,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651341739] [2022-12-13 19:19:05,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:19:05,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:19:05,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:19:06,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:19:06,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:19:06,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651341739] [2022-12-13 19:19:06,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651341739] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:19:06,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:19:06,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:19:06,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61932990] [2022-12-13 19:19:06,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:19:06,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:19:06,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:19:06,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:19:06,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:19:06,065 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 711 [2022-12-13 19:19:06,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 79 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 303.3333333333333) internal successors, (910), 3 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:06,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:19:06,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 711 [2022-12-13 19:19:06,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:19:15,600 INFO L130 PetriNetUnfolder]: 80736/105511 cut-off events. [2022-12-13 19:19:15,601 INFO L131 PetriNetUnfolder]: For 685/685 co-relation queries the response was YES. [2022-12-13 19:19:15,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215207 conditions, 105511 events. 80736/105511 cut-off events. For 685/685 co-relation queries the response was YES. Maximal size of possible extension queue 3437. Compared 614117 event pairs, 18085 based on Foata normal form. 0/53468 useless extension candidates. Maximal degree in co-relation 215199. Up to 95886 conditions per place. [2022-12-13 19:19:15,984 INFO L137 encePairwiseOnDemand]: 705/711 looper letters, 100 selfloop transitions, 4 changer transitions 0/104 dead transitions. [2022-12-13 19:19:15,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 104 transitions, 520 flow [2022-12-13 19:19:15,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:19:15,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:19:15,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 981 transitions. [2022-12-13 19:19:15,986 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.459915611814346 [2022-12-13 19:19:15,986 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 981 transitions. [2022-12-13 19:19:15,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 981 transitions. [2022-12-13 19:19:15,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:19:15,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 981 transitions. [2022-12-13 19:19:15,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:15,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 711.0) internal successors, (2844), 4 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:15,991 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 711.0) internal successors, (2844), 4 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:15,992 INFO L175 Difference]: Start difference. First operand has 57 places, 79 transitions, 256 flow. Second operand 3 states and 981 transitions. [2022-12-13 19:19:15,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 104 transitions, 520 flow [2022-12-13 19:19:15,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 104 transitions, 519 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:19:15,993 INFO L231 Difference]: Finished difference. Result has 59 places, 82 transitions, 283 flow [2022-12-13 19:19:15,994 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=711, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=283, PETRI_PLACES=59, PETRI_TRANSITIONS=82} [2022-12-13 19:19:15,994 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, -17 predicate places. [2022-12-13 19:19:15,994 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 82 transitions, 283 flow [2022-12-13 19:19:15,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 303.3333333333333) internal successors, (910), 3 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:15,995 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:19:15,995 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:19:15,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 19:19:15,995 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 19:19:15,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:19:15,995 INFO L85 PathProgramCache]: Analyzing trace with hash -686379573, now seen corresponding path program 1 times [2022-12-13 19:19:15,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:19:15,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345612197] [2022-12-13 19:19:15,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:19:15,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:19:16,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:19:16,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:19:16,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:19:16,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345612197] [2022-12-13 19:19:16,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345612197] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:19:16,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:19:16,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:19:16,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36025049] [2022-12-13 19:19:16,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:19:16,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:19:16,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:19:16,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:19:16,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:19:16,120 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 711 [2022-12-13 19:19:16,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 82 transitions, 283 flow. Second operand has 3 states, 3 states have (on average 304.0) internal successors, (912), 3 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:16,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:19:16,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 711 [2022-12-13 19:19:16,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:19:25,690 INFO L130 PetriNetUnfolder]: 84526/110741 cut-off events. [2022-12-13 19:19:25,690 INFO L131 PetriNetUnfolder]: For 11280/11280 co-relation queries the response was YES. [2022-12-13 19:19:25,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244254 conditions, 110741 events. 84526/110741 cut-off events. For 11280/11280 co-relation queries the response was YES. Maximal size of possible extension queue 3079. Compared 628545 event pairs, 22465 based on Foata normal form. 0/73038 useless extension candidates. Maximal degree in co-relation 244244. Up to 92576 conditions per place. [2022-12-13 19:19:26,123 INFO L137 encePairwiseOnDemand]: 707/711 looper letters, 104 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2022-12-13 19:19:26,124 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 106 transitions, 553 flow [2022-12-13 19:19:26,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:19:26,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:19:26,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 981 transitions. [2022-12-13 19:19:26,126 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.459915611814346 [2022-12-13 19:19:26,126 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 981 transitions. [2022-12-13 19:19:26,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 981 transitions. [2022-12-13 19:19:26,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:19:26,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 981 transitions. [2022-12-13 19:19:26,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:26,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 711.0) internal successors, (2844), 4 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:26,131 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 711.0) internal successors, (2844), 4 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:26,131 INFO L175 Difference]: Start difference. First operand has 59 places, 82 transitions, 283 flow. Second operand 3 states and 981 transitions. [2022-12-13 19:19:26,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 106 transitions, 553 flow [2022-12-13 19:19:26,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 106 transitions, 550 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:19:26,145 INFO L231 Difference]: Finished difference. Result has 61 places, 82 transitions, 289 flow [2022-12-13 19:19:26,145 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=711, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=289, PETRI_PLACES=61, PETRI_TRANSITIONS=82} [2022-12-13 19:19:26,146 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, -15 predicate places. [2022-12-13 19:19:26,146 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 82 transitions, 289 flow [2022-12-13 19:19:26,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 304.0) internal successors, (912), 3 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:26,146 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:19:26,146 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:19:26,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 19:19:26,146 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 19:19:26,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:19:26,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1814297956, now seen corresponding path program 1 times [2022-12-13 19:19:26,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:19:26,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558642508] [2022-12-13 19:19:26,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:19:26,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:19:26,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:19:26,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:19:26,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:19:26,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558642508] [2022-12-13 19:19:26,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558642508] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:19:26,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:19:26,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:19:26,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387592129] [2022-12-13 19:19:26,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:19:26,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:19:26,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:19:26,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:19:26,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:19:26,238 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 711 [2022-12-13 19:19:26,239 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 82 transitions, 289 flow. Second operand has 3 states, 3 states have (on average 304.6666666666667) internal successors, (914), 3 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:26,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:19:26,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 711 [2022-12-13 19:19:26,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:19:34,831 INFO L130 PetriNetUnfolder]: 68306/89071 cut-off events. [2022-12-13 19:19:34,831 INFO L131 PetriNetUnfolder]: For 13050/13050 co-relation queries the response was YES. [2022-12-13 19:19:34,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201686 conditions, 89071 events. 68306/89071 cut-off events. For 13050/13050 co-relation queries the response was YES. Maximal size of possible extension queue 2709. Compared 489759 event pairs, 15845 based on Foata normal form. 0/63108 useless extension candidates. Maximal degree in co-relation 201674. Up to 79476 conditions per place. [2022-12-13 19:19:35,178 INFO L137 encePairwiseOnDemand]: 707/711 looper letters, 103 selfloop transitions, 2 changer transitions 0/105 dead transitions. [2022-12-13 19:19:35,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 105 transitions, 558 flow [2022-12-13 19:19:35,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:19:35,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:19:35,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 981 transitions. [2022-12-13 19:19:35,181 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.459915611814346 [2022-12-13 19:19:35,181 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 981 transitions. [2022-12-13 19:19:35,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 981 transitions. [2022-12-13 19:19:35,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:19:35,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 981 transitions. [2022-12-13 19:19:35,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:35,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 711.0) internal successors, (2844), 4 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:35,185 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 711.0) internal successors, (2844), 4 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:35,185 INFO L175 Difference]: Start difference. First operand has 61 places, 82 transitions, 289 flow. Second operand 3 states and 981 transitions. [2022-12-13 19:19:35,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 105 transitions, 558 flow [2022-12-13 19:19:35,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 105 transitions, 556 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:19:35,188 INFO L231 Difference]: Finished difference. Result has 63 places, 82 transitions, 297 flow [2022-12-13 19:19:35,188 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=711, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=297, PETRI_PLACES=63, PETRI_TRANSITIONS=82} [2022-12-13 19:19:35,189 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, -13 predicate places. [2022-12-13 19:19:35,189 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 82 transitions, 297 flow [2022-12-13 19:19:35,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 304.6666666666667) internal successors, (914), 3 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:35,189 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:19:35,189 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:19:35,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 19:19:35,190 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 19:19:35,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:19:35,190 INFO L85 PathProgramCache]: Analyzing trace with hash -216286111, now seen corresponding path program 1 times [2022-12-13 19:19:35,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:19:35,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360455930] [2022-12-13 19:19:35,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:19:35,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:19:35,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:19:35,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:19:35,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:19:35,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360455930] [2022-12-13 19:19:35,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360455930] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:19:35,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:19:35,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:19:35,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121413191] [2022-12-13 19:19:35,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:19:35,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:19:35,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:19:35,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:19:35,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:19:35,351 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 711 [2022-12-13 19:19:35,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 82 transitions, 297 flow. Second operand has 4 states, 4 states have (on average 290.25) internal successors, (1161), 4 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:35,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:19:35,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 711 [2022-12-13 19:19:35,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:19:43,740 INFO L130 PetriNetUnfolder]: 68901/90126 cut-off events. [2022-12-13 19:19:43,741 INFO L131 PetriNetUnfolder]: For 16810/16810 co-relation queries the response was YES. [2022-12-13 19:19:43,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213091 conditions, 90126 events. 68901/90126 cut-off events. For 16810/16810 co-relation queries the response was YES. Maximal size of possible extension queue 2735. Compared 511450 event pairs, 56345 based on Foata normal form. 150/69611 useless extension candidates. Maximal degree in co-relation 213077. Up to 89070 conditions per place. [2022-12-13 19:19:44,237 INFO L137 encePairwiseOnDemand]: 701/711 looper letters, 79 selfloop transitions, 2 changer transitions 64/145 dead transitions. [2022-12-13 19:19:44,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 145 transitions, 790 flow [2022-12-13 19:19:44,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:19:44,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 19:19:44,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1540 transitions. [2022-12-13 19:19:44,240 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43319268635724334 [2022-12-13 19:19:44,240 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1540 transitions. [2022-12-13 19:19:44,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1540 transitions. [2022-12-13 19:19:44,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:19:44,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1540 transitions. [2022-12-13 19:19:44,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 308.0) internal successors, (1540), 5 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:44,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 711.0) internal successors, (4266), 6 states have internal predecessors, (4266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:44,247 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 711.0) internal successors, (4266), 6 states have internal predecessors, (4266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:44,247 INFO L175 Difference]: Start difference. First operand has 63 places, 82 transitions, 297 flow. Second operand 5 states and 1540 transitions. [2022-12-13 19:19:44,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 145 transitions, 790 flow [2022-12-13 19:19:44,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 145 transitions, 788 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:19:44,252 INFO L231 Difference]: Finished difference. Result has 68 places, 81 transitions, 325 flow [2022-12-13 19:19:44,253 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=711, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=325, PETRI_PLACES=68, PETRI_TRANSITIONS=81} [2022-12-13 19:19:44,253 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, -8 predicate places. [2022-12-13 19:19:44,253 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 81 transitions, 325 flow [2022-12-13 19:19:44,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 290.25) internal successors, (1161), 4 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:44,254 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:19:44,254 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:19:44,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 19:19:44,254 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 19:19:44,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:19:44,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1071526913, now seen corresponding path program 1 times [2022-12-13 19:19:44,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:19:44,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279931835] [2022-12-13 19:19:44,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:19:44,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:19:44,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:19:44,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:19:44,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:19:44,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279931835] [2022-12-13 19:19:44,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279931835] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:19:44,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226427101] [2022-12-13 19:19:44,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:19:44,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:19:44,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:19:44,351 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:19:44,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 19:19:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:19:44,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:19:44,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:19:44,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:19:44,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:19:44,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226427101] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:19:44,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:19:44,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2022-12-13 19:19:44,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667336401] [2022-12-13 19:19:44,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:19:44,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:19:44,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:19:44,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:19:44,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:19:44,487 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 711 [2022-12-13 19:19:44,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 81 transitions, 325 flow. Second operand has 3 states, 3 states have (on average 307.6666666666667) internal successors, (923), 3 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:44,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:19:44,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 711 [2022-12-13 19:19:44,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:19:48,218 INFO L130 PetriNetUnfolder]: 29430/38695 cut-off events. [2022-12-13 19:19:48,218 INFO L131 PetriNetUnfolder]: For 16316/16316 co-relation queries the response was YES. [2022-12-13 19:19:48,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93940 conditions, 38695 events. 29430/38695 cut-off events. For 16316/16316 co-relation queries the response was YES. Maximal size of possible extension queue 1165. Compared 199042 event pairs, 22855 based on Foata normal form. 6070/38205 useless extension candidates. Maximal degree in co-relation 93923. Up to 38695 conditions per place. [2022-12-13 19:19:48,368 INFO L137 encePairwiseOnDemand]: 704/711 looper letters, 74 selfloop transitions, 1 changer transitions 0/75 dead transitions. [2022-12-13 19:19:48,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 75 transitions, 457 flow [2022-12-13 19:19:48,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:19:48,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:19:48,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 960 transitions. [2022-12-13 19:19:48,370 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.450070323488045 [2022-12-13 19:19:48,370 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 960 transitions. [2022-12-13 19:19:48,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 960 transitions. [2022-12-13 19:19:48,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:19:48,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 960 transitions. [2022-12-13 19:19:48,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:48,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 711.0) internal successors, (2844), 4 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:48,373 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 711.0) internal successors, (2844), 4 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:48,374 INFO L175 Difference]: Start difference. First operand has 68 places, 81 transitions, 325 flow. Second operand 3 states and 960 transitions. [2022-12-13 19:19:48,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 75 transitions, 457 flow [2022-12-13 19:19:48,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 75 transitions, 427 flow, removed 14 selfloop flow, removed 3 redundant places. [2022-12-13 19:19:48,383 INFO L231 Difference]: Finished difference. Result has 59 places, 75 transitions, 279 flow [2022-12-13 19:19:48,383 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=711, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=279, PETRI_PLACES=59, PETRI_TRANSITIONS=75} [2022-12-13 19:19:48,383 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, -17 predicate places. [2022-12-13 19:19:48,384 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 75 transitions, 279 flow [2022-12-13 19:19:48,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 307.6666666666667) internal successors, (923), 3 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:48,385 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:19:48,385 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:19:48,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 19:19:48,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-13 19:19:48,586 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 19:19:48,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:19:48,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1142402506, now seen corresponding path program 1 times [2022-12-13 19:19:48,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:19:48,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028360783] [2022-12-13 19:19:48,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:19:48,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:19:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:19:48,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:19:48,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:19:48,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028360783] [2022-12-13 19:19:48,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028360783] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:19:48,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:19:48,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:19:48,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446628874] [2022-12-13 19:19:48,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:19:48,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:19:48,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:19:48,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:19:48,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:19:48,780 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 711 [2022-12-13 19:19:48,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 75 transitions, 279 flow. Second operand has 3 states, 3 states have (on average 304.0) internal successors, (912), 3 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:48,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:19:48,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 711 [2022-12-13 19:19:48,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:19:52,355 INFO L130 PetriNetUnfolder]: 27640/36375 cut-off events. [2022-12-13 19:19:52,356 INFO L131 PetriNetUnfolder]: For 10200/10200 co-relation queries the response was YES. [2022-12-13 19:19:52,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88716 conditions, 36375 events. 27640/36375 cut-off events. For 10200/10200 co-relation queries the response was YES. Maximal size of possible extension queue 1238. Compared 180012 event pairs, 7375 based on Foata normal form. 1030/30873 useless extension candidates. Maximal degree in co-relation 88700. Up to 32081 conditions per place. [2022-12-13 19:19:52,499 INFO L137 encePairwiseOnDemand]: 707/711 looper letters, 89 selfloop transitions, 2 changer transitions 8/99 dead transitions. [2022-12-13 19:19:52,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 99 transitions, 542 flow [2022-12-13 19:19:52,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:19:52,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:19:52,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 971 transitions. [2022-12-13 19:19:52,501 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4552273792780122 [2022-12-13 19:19:52,501 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 971 transitions. [2022-12-13 19:19:52,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 971 transitions. [2022-12-13 19:19:52,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:19:52,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 971 transitions. [2022-12-13 19:19:52,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 323.6666666666667) internal successors, (971), 3 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:52,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 711.0) internal successors, (2844), 4 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:52,505 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 711.0) internal successors, (2844), 4 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:52,505 INFO L175 Difference]: Start difference. First operand has 59 places, 75 transitions, 279 flow. Second operand 3 states and 971 transitions. [2022-12-13 19:19:52,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 99 transitions, 542 flow [2022-12-13 19:19:52,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 99 transitions, 541 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:19:52,507 INFO L231 Difference]: Finished difference. Result has 61 places, 76 transitions, 292 flow [2022-12-13 19:19:52,508 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=711, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=61, PETRI_TRANSITIONS=76} [2022-12-13 19:19:52,508 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, -15 predicate places. [2022-12-13 19:19:52,508 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 76 transitions, 292 flow [2022-12-13 19:19:52,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 304.0) internal successors, (912), 3 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:52,509 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:19:52,509 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:19:52,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 19:19:52,509 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 19:19:52,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:19:52,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1054732261, now seen corresponding path program 1 times [2022-12-13 19:19:52,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:19:52,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68314448] [2022-12-13 19:19:52,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:19:52,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:19:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:19:52,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:19:52,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:19:52,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68314448] [2022-12-13 19:19:52,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68314448] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:19:52,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:19:52,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:19:52,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329649194] [2022-12-13 19:19:52,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:19:52,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:19:52,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:19:52,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:19:52,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:19:52,693 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 711 [2022-12-13 19:19:52,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 76 transitions, 292 flow. Second operand has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:52,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:19:52,694 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 711 [2022-12-13 19:19:52,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:19:56,368 INFO L130 PetriNetUnfolder]: 28565/37940 cut-off events. [2022-12-13 19:19:56,368 INFO L131 PetriNetUnfolder]: For 11495/11495 co-relation queries the response was YES. [2022-12-13 19:19:56,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96739 conditions, 37940 events. 28565/37940 cut-off events. For 11495/11495 co-relation queries the response was YES. Maximal size of possible extension queue 1232. Compared 196970 event pairs, 22180 based on Foata normal form. 80/32288 useless extension candidates. Maximal degree in co-relation 96721. Up to 36355 conditions per place. [2022-12-13 19:19:56,510 INFO L137 encePairwiseOnDemand]: 701/711 looper letters, 62 selfloop transitions, 13 changer transitions 48/123 dead transitions. [2022-12-13 19:19:56,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 123 transitions, 667 flow [2022-12-13 19:19:56,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:19:56,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 19:19:56,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1533 transitions. [2022-12-13 19:19:56,514 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4312236286919831 [2022-12-13 19:19:56,514 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1533 transitions. [2022-12-13 19:19:56,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1533 transitions. [2022-12-13 19:19:56,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:19:56,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1533 transitions. [2022-12-13 19:19:56,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 306.6) internal successors, (1533), 5 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:56,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 711.0) internal successors, (4266), 6 states have internal predecessors, (4266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:56,520 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 711.0) internal successors, (4266), 6 states have internal predecessors, (4266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:56,520 INFO L175 Difference]: Start difference. First operand has 61 places, 76 transitions, 292 flow. Second operand 5 states and 1533 transitions. [2022-12-13 19:19:56,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 123 transitions, 667 flow [2022-12-13 19:19:56,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 123 transitions, 665 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:19:56,523 INFO L231 Difference]: Finished difference. Result has 66 places, 75 transitions, 340 flow [2022-12-13 19:19:56,523 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=711, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=340, PETRI_PLACES=66, PETRI_TRANSITIONS=75} [2022-12-13 19:19:56,523 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, -10 predicate places. [2022-12-13 19:19:56,523 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 75 transitions, 340 flow [2022-12-13 19:19:56,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:56,524 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:19:56,524 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:19:56,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 19:19:56,524 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 19:19:56,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:19:56,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1485770524, now seen corresponding path program 1 times [2022-12-13 19:19:56,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:19:56,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817948494] [2022-12-13 19:19:56,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:19:56,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:19:56,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:19:56,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:19:56,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:19:56,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817948494] [2022-12-13 19:19:56,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817948494] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:19:56,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932563507] [2022-12-13 19:19:56,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:19:56,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:19:56,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:19:56,651 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:19:56,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 19:19:56,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:19:56,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 19:19:56,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:19:56,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 19:19:56,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:19:56,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932563507] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:19:56,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:19:56,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-12-13 19:19:56,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520418987] [2022-12-13 19:19:56,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:19:56,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:19:56,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:19:56,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:19:56,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:19:56,790 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 711 [2022-12-13 19:19:56,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 75 transitions, 340 flow. Second operand has 3 states, 3 states have (on average 308.6666666666667) internal successors, (926), 3 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:56,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:19:56,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 711 [2022-12-13 19:19:56,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:19:59,310 INFO L130 PetriNetUnfolder]: 19339/25594 cut-off events. [2022-12-13 19:19:59,310 INFO L131 PetriNetUnfolder]: For 10207/10207 co-relation queries the response was YES. [2022-12-13 19:19:59,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65222 conditions, 25594 events. 19339/25594 cut-off events. For 10207/10207 co-relation queries the response was YES. Maximal size of possible extension queue 804. Compared 125080 event pairs, 14435 based on Foata normal form. 520/23504 useless extension candidates. Maximal degree in co-relation 65201. Up to 25594 conditions per place. [2022-12-13 19:19:59,400 INFO L137 encePairwiseOnDemand]: 708/711 looper letters, 72 selfloop transitions, 1 changer transitions 0/73 dead transitions. [2022-12-13 19:19:59,400 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 73 transitions, 476 flow [2022-12-13 19:19:59,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:19:59,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:19:59,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 954 transitions. [2022-12-13 19:19:59,402 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4472573839662447 [2022-12-13 19:19:59,402 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 954 transitions. [2022-12-13 19:19:59,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 954 transitions. [2022-12-13 19:19:59,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:19:59,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 954 transitions. [2022-12-13 19:19:59,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 318.0) internal successors, (954), 3 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:59,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 711.0) internal successors, (2844), 4 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:59,406 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 711.0) internal successors, (2844), 4 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:59,406 INFO L175 Difference]: Start difference. First operand has 66 places, 75 transitions, 340 flow. Second operand 3 states and 954 transitions. [2022-12-13 19:19:59,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 73 transitions, 476 flow [2022-12-13 19:19:59,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 73 transitions, 446 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-12-13 19:19:59,409 INFO L231 Difference]: Finished difference. Result has 63 places, 73 transitions, 302 flow [2022-12-13 19:19:59,409 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=711, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=302, PETRI_PLACES=63, PETRI_TRANSITIONS=73} [2022-12-13 19:19:59,409 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, -13 predicate places. [2022-12-13 19:19:59,410 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 73 transitions, 302 flow [2022-12-13 19:19:59,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 308.6666666666667) internal successors, (926), 3 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:59,410 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:19:59,410 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:19:59,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-13 19:19:59,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 19:19:59,612 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 19:19:59,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:19:59,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1185755523, now seen corresponding path program 1 times [2022-12-13 19:19:59,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:19:59,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898803893] [2022-12-13 19:19:59,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:19:59,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:19:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:19:59,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 19:19:59,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:19:59,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898803893] [2022-12-13 19:19:59,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898803893] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:19:59,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:19:59,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:19:59,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385030008] [2022-12-13 19:19:59,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:19:59,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:19:59,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:19:59,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:19:59,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:19:59,787 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 711 [2022-12-13 19:19:59,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 73 transitions, 302 flow. Second operand has 4 states, 4 states have (on average 291.5) internal successors, (1166), 4 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:59,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:19:59,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 711 [2022-12-13 19:19:59,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:20:01,815 INFO L130 PetriNetUnfolder]: 15679/20826 cut-off events. [2022-12-13 19:20:01,815 INFO L131 PetriNetUnfolder]: For 7104/7104 co-relation queries the response was YES. [2022-12-13 19:20:01,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52892 conditions, 20826 events. 15679/20826 cut-off events. For 7104/7104 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 99374 event pairs, 11749 based on Foata normal form. 24/18762 useless extension candidates. Maximal degree in co-relation 52872. Up to 20454 conditions per place. [2022-12-13 19:20:01,898 INFO L137 encePairwiseOnDemand]: 700/711 looper letters, 56 selfloop transitions, 17 changer transitions 24/97 dead transitions. [2022-12-13 19:20:01,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 97 transitions, 562 flow [2022-12-13 19:20:01,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:20:01,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 19:20:01,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1509 transitions. [2022-12-13 19:20:01,901 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42447257383966247 [2022-12-13 19:20:01,901 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1509 transitions. [2022-12-13 19:20:01,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1509 transitions. [2022-12-13 19:20:01,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:20:01,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1509 transitions. [2022-12-13 19:20:01,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 301.8) internal successors, (1509), 5 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:01,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 711.0) internal successors, (4266), 6 states have internal predecessors, (4266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:01,907 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 711.0) internal successors, (4266), 6 states have internal predecessors, (4266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:01,907 INFO L175 Difference]: Start difference. First operand has 63 places, 73 transitions, 302 flow. Second operand 5 states and 1509 transitions. [2022-12-13 19:20:01,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 97 transitions, 562 flow [2022-12-13 19:20:01,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 97 transitions, 561 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:20:01,909 INFO L231 Difference]: Finished difference. Result has 68 places, 73 transitions, 358 flow [2022-12-13 19:20:01,909 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=711, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=358, PETRI_PLACES=68, PETRI_TRANSITIONS=73} [2022-12-13 19:20:01,910 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, -8 predicate places. [2022-12-13 19:20:01,910 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 73 transitions, 358 flow [2022-12-13 19:20:01,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 291.5) internal successors, (1166), 4 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:01,910 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:20:01,910 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:20:01,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 19:20:01,910 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 19:20:01,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:20:01,911 INFO L85 PathProgramCache]: Analyzing trace with hash -179059405, now seen corresponding path program 1 times [2022-12-13 19:20:01,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:20:01,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14114415] [2022-12-13 19:20:01,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:20:01,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:20:01,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:20:02,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 19:20:02,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:20:02,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14114415] [2022-12-13 19:20:02,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14114415] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:20:02,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319125344] [2022-12-13 19:20:02,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:20:02,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:20:02,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:20:02,012 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:20:02,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 19:20:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:20:02,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 19:20:02,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:20:02,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 19:20:02,154 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:20:02,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319125344] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:20:02,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:20:02,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-12-13 19:20:02,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889217289] [2022-12-13 19:20:02,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:20:02,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:20:02,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:20:02,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:20:02,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:20:02,159 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 711 [2022-12-13 19:20:02,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 73 transitions, 358 flow. Second operand has 3 states, 3 states have (on average 309.3333333333333) internal successors, (928), 3 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:02,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:20:02,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 711 [2022-12-13 19:20:02,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:20:03,545 INFO L130 PetriNetUnfolder]: 10754/14338 cut-off events. [2022-12-13 19:20:03,545 INFO L131 PetriNetUnfolder]: For 5419/5419 co-relation queries the response was YES. [2022-12-13 19:20:03,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36338 conditions, 14338 events. 10754/14338 cut-off events. For 5419/5419 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 64497 event pairs, 7804 based on Foata normal form. 336/13994 useless extension candidates. Maximal degree in co-relation 36315. Up to 14338 conditions per place. [2022-12-13 19:20:03,606 INFO L137 encePairwiseOnDemand]: 708/711 looper letters, 70 selfloop transitions, 1 changer transitions 0/71 dead transitions. [2022-12-13 19:20:03,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 71 transitions, 492 flow [2022-12-13 19:20:03,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:20:03,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:20:03,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 952 transitions. [2022-12-13 19:20:03,608 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44631973745897796 [2022-12-13 19:20:03,608 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 952 transitions. [2022-12-13 19:20:03,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 952 transitions. [2022-12-13 19:20:03,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:20:03,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 952 transitions. [2022-12-13 19:20:03,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 317.3333333333333) internal successors, (952), 3 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:03,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 711.0) internal successors, (2844), 4 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:03,612 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 711.0) internal successors, (2844), 4 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:03,612 INFO L175 Difference]: Start difference. First operand has 68 places, 73 transitions, 358 flow. Second operand 3 states and 952 transitions. [2022-12-13 19:20:03,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 71 transitions, 492 flow [2022-12-13 19:20:03,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 71 transitions, 429 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-12-13 19:20:03,615 INFO L231 Difference]: Finished difference. Result has 63 places, 71 transitions, 289 flow [2022-12-13 19:20:03,615 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=711, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=289, PETRI_PLACES=63, PETRI_TRANSITIONS=71} [2022-12-13 19:20:03,615 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, -13 predicate places. [2022-12-13 19:20:03,615 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 71 transitions, 289 flow [2022-12-13 19:20:03,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.3333333333333) internal successors, (928), 3 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:03,616 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:20:03,616 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:20:03,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-13 19:20:03,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:20:03,818 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 19:20:03,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:20:03,819 INFO L85 PathProgramCache]: Analyzing trace with hash -7849222, now seen corresponding path program 1 times [2022-12-13 19:20:03,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:20:03,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069032271] [2022-12-13 19:20:03,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:20:03,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:20:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:20:03,938 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 19:20:03,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:20:03,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069032271] [2022-12-13 19:20:03,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069032271] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:20:03,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:20:03,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:20:03,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127910235] [2022-12-13 19:20:03,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:20:03,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:20:03,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:20:03,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:20:03,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:20:04,024 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 711 [2022-12-13 19:20:04,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 71 transitions, 289 flow. Second operand has 4 states, 4 states have (on average 292.5) internal successors, (1170), 4 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:04,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:20:04,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 711 [2022-12-13 19:20:04,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:20:05,659 INFO L130 PetriNetUnfolder]: 12094/16460 cut-off events. [2022-12-13 19:20:05,660 INFO L131 PetriNetUnfolder]: For 5658/5658 co-relation queries the response was YES. [2022-12-13 19:20:05,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41165 conditions, 16460 events. 12094/16460 cut-off events. For 5658/5658 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 77418 event pairs, 8980 based on Foata normal form. 144/15923 useless extension candidates. Maximal degree in co-relation 41144. Up to 14328 conditions per place. [2022-12-13 19:20:05,699 INFO L137 encePairwiseOnDemand]: 705/711 looper letters, 64 selfloop transitions, 6 changer transitions 44/114 dead transitions. [2022-12-13 19:20:05,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 114 transitions, 663 flow [2022-12-13 19:20:05,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:20:05,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 19:20:05,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1225 transitions. [2022-12-13 19:20:05,701 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43073136427566805 [2022-12-13 19:20:05,701 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1225 transitions. [2022-12-13 19:20:05,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1225 transitions. [2022-12-13 19:20:05,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:20:05,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1225 transitions. [2022-12-13 19:20:05,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 306.25) internal successors, (1225), 4 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:05,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 711.0) internal successors, (3555), 5 states have internal predecessors, (3555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:05,705 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 711.0) internal successors, (3555), 5 states have internal predecessors, (3555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:05,705 INFO L175 Difference]: Start difference. First operand has 63 places, 71 transitions, 289 flow. Second operand 4 states and 1225 transitions. [2022-12-13 19:20:05,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 114 transitions, 663 flow [2022-12-13 19:20:05,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 114 transitions, 662 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:20:05,707 INFO L231 Difference]: Finished difference. Result has 66 places, 70 transitions, 305 flow [2022-12-13 19:20:05,707 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=711, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=305, PETRI_PLACES=66, PETRI_TRANSITIONS=70} [2022-12-13 19:20:05,707 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, -10 predicate places. [2022-12-13 19:20:05,708 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 70 transitions, 305 flow [2022-12-13 19:20:05,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 292.5) internal successors, (1170), 4 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:05,708 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:20:05,708 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:20:05,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 19:20:05,708 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 19:20:05,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:20:05,708 INFO L85 PathProgramCache]: Analyzing trace with hash 800217105, now seen corresponding path program 1 times [2022-12-13 19:20:05,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:20:05,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149078549] [2022-12-13 19:20:05,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:20:05,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:20:05,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:20:05,834 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 19:20:05,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:20:05,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149078549] [2022-12-13 19:20:05,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149078549] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:20:05,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653681246] [2022-12-13 19:20:05,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:20:05,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:20:05,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:20:05,835 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:20:05,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 19:20:05,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:20:05,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 19:20:05,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:20:06,007 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 19:20:06,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:20:06,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653681246] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:20:06,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:20:06,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-12-13 19:20:06,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589790048] [2022-12-13 19:20:06,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:20:06,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:20:06,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:20:06,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:20:06,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:20:06,011 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 711 [2022-12-13 19:20:06,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 70 transitions, 305 flow. Second operand has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:06,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:20:06,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 711 [2022-12-13 19:20:06,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:20:06,944 INFO L130 PetriNetUnfolder]: 7529/10145 cut-off events. [2022-12-13 19:20:06,944 INFO L131 PetriNetUnfolder]: For 3825/3825 co-relation queries the response was YES. [2022-12-13 19:20:06,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25579 conditions, 10145 events. 7529/10145 cut-off events. For 3825/3825 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 43965 event pairs, 5356 based on Foata normal form. 288/10433 useless extension candidates. Maximal degree in co-relation 25556. Up to 10145 conditions per place. [2022-12-13 19:20:06,965 INFO L137 encePairwiseOnDemand]: 708/711 looper letters, 0 selfloop transitions, 0 changer transitions 68/68 dead transitions. [2022-12-13 19:20:06,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 68 transitions, 433 flow [2022-12-13 19:20:06,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:20:06,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:20:06,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 950 transitions. [2022-12-13 19:20:06,967 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4453820909517112 [2022-12-13 19:20:06,968 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 950 transitions. [2022-12-13 19:20:06,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 950 transitions. [2022-12-13 19:20:06,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:20:06,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 950 transitions. [2022-12-13 19:20:06,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 316.6666666666667) internal successors, (950), 3 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:06,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 711.0) internal successors, (2844), 4 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:06,971 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 711.0) internal successors, (2844), 4 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:06,971 INFO L175 Difference]: Start difference. First operand has 66 places, 70 transitions, 305 flow. Second operand 3 states and 950 transitions. [2022-12-13 19:20:06,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 68 transitions, 433 flow [2022-12-13 19:20:06,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 68 transitions, 410 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-12-13 19:20:06,975 INFO L231 Difference]: Finished difference. Result has 62 places, 0 transitions, 0 flow [2022-12-13 19:20:06,975 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=711, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=62, PETRI_TRANSITIONS=0} [2022-12-13 19:20:06,975 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, -14 predicate places. [2022-12-13 19:20:06,976 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 0 transitions, 0 flow [2022-12-13 19:20:06,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:06,978 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (59 of 60 remaining) [2022-12-13 19:20:06,978 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (58 of 60 remaining) [2022-12-13 19:20:06,978 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (57 of 60 remaining) [2022-12-13 19:20:06,978 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (56 of 60 remaining) [2022-12-13 19:20:06,978 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (55 of 60 remaining) [2022-12-13 19:20:06,978 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (54 of 60 remaining) [2022-12-13 19:20:06,978 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (53 of 60 remaining) [2022-12-13 19:20:06,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 60 remaining) [2022-12-13 19:20:06,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 60 remaining) [2022-12-13 19:20:06,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 60 remaining) [2022-12-13 19:20:06,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 60 remaining) [2022-12-13 19:20:06,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 60 remaining) [2022-12-13 19:20:06,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 60 remaining) [2022-12-13 19:20:06,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 60 remaining) [2022-12-13 19:20:06,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 60 remaining) [2022-12-13 19:20:06,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 60 remaining) [2022-12-13 19:20:06,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 60 remaining) [2022-12-13 19:20:06,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 60 remaining) [2022-12-13 19:20:06,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 60 remaining) [2022-12-13 19:20:06,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 60 remaining) [2022-12-13 19:20:06,980 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 60 remaining) [2022-12-13 19:20:06,980 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 60 remaining) [2022-12-13 19:20:06,980 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 60 remaining) [2022-12-13 19:20:06,980 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 60 remaining) [2022-12-13 19:20:06,980 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 60 remaining) [2022-12-13 19:20:06,980 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 60 remaining) [2022-12-13 19:20:06,980 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 60 remaining) [2022-12-13 19:20:06,980 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 60 remaining) [2022-12-13 19:20:06,980 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (31 of 60 remaining) [2022-12-13 19:20:06,980 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 60 remaining) [2022-12-13 19:20:06,980 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 60 remaining) [2022-12-13 19:20:06,980 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 60 remaining) [2022-12-13 19:20:06,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 60 remaining) [2022-12-13 19:20:06,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 60 remaining) [2022-12-13 19:20:06,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 60 remaining) [2022-12-13 19:20:06,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 60 remaining) [2022-12-13 19:20:06,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 60 remaining) [2022-12-13 19:20:06,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 60 remaining) [2022-12-13 19:20:06,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 60 remaining) [2022-12-13 19:20:06,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 60 remaining) [2022-12-13 19:20:06,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 60 remaining) [2022-12-13 19:20:06,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 60 remaining) [2022-12-13 19:20:06,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 60 remaining) [2022-12-13 19:20:06,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 60 remaining) [2022-12-13 19:20:06,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 60 remaining) [2022-12-13 19:20:06,982 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 60 remaining) [2022-12-13 19:20:06,982 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 60 remaining) [2022-12-13 19:20:06,982 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 60 remaining) [2022-12-13 19:20:06,982 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 60 remaining) [2022-12-13 19:20:06,982 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 60 remaining) [2022-12-13 19:20:06,982 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 60 remaining) [2022-12-13 19:20:06,982 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 60 remaining) [2022-12-13 19:20:06,982 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 60 remaining) [2022-12-13 19:20:06,982 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 60 remaining) [2022-12-13 19:20:06,982 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 60 remaining) [2022-12-13 19:20:06,982 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 60 remaining) [2022-12-13 19:20:06,982 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 60 remaining) [2022-12-13 19:20:06,982 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 60 remaining) [2022-12-13 19:20:06,983 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 60 remaining) [2022-12-13 19:20:06,983 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 60 remaining) [2022-12-13 19:20:06,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-13 19:20:07,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:20:07,183 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:20:07,187 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 19:20:07,187 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 19:20:07,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 07:20:07 BasicIcfg [2022-12-13 19:20:07,190 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 19:20:07,190 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 19:20:07,190 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 19:20:07,190 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 19:20:07,190 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:18:24" (3/4) ... [2022-12-13 19:20:07,192 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 19:20:07,195 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 19:20:07,196 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 19:20:07,196 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-12-13 19:20:07,196 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2022-12-13 19:20:07,200 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 38 nodes and edges [2022-12-13 19:20:07,200 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 19:20:07,200 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 19:20:07,200 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 19:20:07,233 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 19:20:07,233 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 19:20:07,234 INFO L158 Benchmark]: Toolchain (without parser) took 104416.62ms. Allocated memory was 157.3MB in the beginning and 5.3GB in the end (delta: 5.1GB). Free memory was 120.7MB in the beginning and 904.1MB in the end (delta: -783.4MB). Peak memory consumption was 4.3GB. Max. memory is 16.1GB. [2022-12-13 19:20:07,234 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 157.3MB. Free memory is still 100.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:20:07,234 INFO L158 Benchmark]: CACSL2BoogieTranslator took 245.02ms. Allocated memory is still 157.3MB. Free memory was 120.4MB in the beginning and 103.9MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-13 19:20:07,235 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.49ms. Allocated memory is still 157.3MB. Free memory was 103.9MB in the beginning and 100.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 19:20:07,235 INFO L158 Benchmark]: Boogie Preprocessor took 51.24ms. Allocated memory is still 157.3MB. Free memory was 100.9MB in the beginning and 98.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:20:07,235 INFO L158 Benchmark]: RCFGBuilder took 964.60ms. Allocated memory was 157.3MB in the beginning and 188.7MB in the end (delta: 31.5MB). Free memory was 98.2MB in the beginning and 98.5MB in the end (delta: -302.1kB). Peak memory consumption was 50.2MB. Max. memory is 16.1GB. [2022-12-13 19:20:07,236 INFO L158 Benchmark]: TraceAbstraction took 103064.46ms. Allocated memory was 188.7MB in the beginning and 5.3GB in the end (delta: 5.1GB). Free memory was 97.5MB in the beginning and 909.3MB in the end (delta: -811.9MB). Peak memory consumption was 4.3GB. Max. memory is 16.1GB. [2022-12-13 19:20:07,236 INFO L158 Benchmark]: Witness Printer took 43.07ms. Allocated memory is still 5.3GB. Free memory was 909.3MB in the beginning and 904.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 19:20:07,238 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 157.3MB. Free memory is still 100.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 245.02ms. Allocated memory is still 157.3MB. Free memory was 120.4MB in the beginning and 103.9MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.49ms. Allocated memory is still 157.3MB. Free memory was 103.9MB in the beginning and 100.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.24ms. Allocated memory is still 157.3MB. Free memory was 100.9MB in the beginning and 98.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 964.60ms. Allocated memory was 157.3MB in the beginning and 188.7MB in the end (delta: 31.5MB). Free memory was 98.2MB in the beginning and 98.5MB in the end (delta: -302.1kB). Peak memory consumption was 50.2MB. Max. memory is 16.1GB. * TraceAbstraction took 103064.46ms. Allocated memory was 188.7MB in the beginning and 5.3GB in the end (delta: 5.1GB). Free memory was 97.5MB in the beginning and 909.3MB in the end (delta: -811.9MB). Peak memory consumption was 4.3GB. Max. memory is 16.1GB. * Witness Printer took 43.07ms. Allocated memory is still 5.3GB. Free memory was 909.3MB in the beginning and 904.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.9s, 329 PlacesBefore, 76 PlacesAfterwards, 340 TransitionsBefore, 71 TransitionsAfterwards, 5184 CoEnabledTransitionPairs, 7 FixpointIterations, 230 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 41 TrivialYvCompositions, 13 ConcurrentYvCompositions, 16 ChoiceCompositions, 344 TotalNumberOfCompositions, 19210 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6789, independent: 6408, independent conditional: 0, independent unconditional: 6408, dependent: 381, dependent conditional: 0, dependent unconditional: 381, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2484, independent: 2403, independent conditional: 0, independent unconditional: 2403, dependent: 81, dependent conditional: 0, dependent unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6789, independent: 4005, independent conditional: 0, independent unconditional: 4005, dependent: 300, dependent conditional: 0, dependent unconditional: 300, unknown: 2484, unknown conditional: 0, unknown unconditional: 2484] , Statistics on independence cache: Total cache size (in pairs): 381, Positive cache size: 348, Positive conditional cache size: 0, Positive unconditional cache size: 348, Negative cache size: 33, Negative conditional cache size: 0, Negative unconditional cache size: 33, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 62]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 62]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 68]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 68]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 116]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 116]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 122]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 122]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 134]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 134]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 140]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 140]: 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 9 procedures, 407 locations, 60 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: 102.9s, OverallIterations: 16, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 86.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 12.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1750 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1286 mSDsluCounter, 106 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 60 mSDsCounter, 206 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2427 IncrementalHoareTripleChecker+Invalid, 2633 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 206 mSolverCounterUnsat, 46 mSDtfsCounter, 2427 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=393occurred in iteration=3, InterpolantAutomatonStates: 59, 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: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 283 NumberOfCodeBlocks, 279 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 262 ConstructedInterpolants, 0 QuantifiedInterpolants, 844 SizeOfPredicates, 2 NumberOfNonLiveVariables, 2113 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 24 InterpolantComputations, 15 PerfectInterpolantSequences, 34/52 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 32 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 19:20:07,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af469062-5a59-43c2-a5cc-b4535519d5f7/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE