./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-dec-subseq.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_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/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_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/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_02d46f77-1429-4416-8652-75bf7ef63d32/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 ecda181bd3fe1882667151a04232fb9d04292dd6ca3491d98fdc8de5d539856a --- 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 17:23:58,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:23:58,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:23:58,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:23:58,281 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:23:58,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:23:58,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:23:58,284 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:23:58,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:23:58,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:23:58,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:23:58,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:23:58,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:23:58,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:23:58,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:23:58,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:23:58,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:23:58,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:23:58,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:23:58,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:23:58,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:23:58,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:23:58,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:23:58,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:23:58,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:23:58,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:23:58,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:23:58,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:23:58,301 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:23:58,302 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:23:58,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:23:58,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:23:58,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:23:58,304 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:23:58,305 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:23:58,305 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:23:58,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:23:58,306 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:23:58,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:23:58,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:23:58,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:23:58,308 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 17:23:58,324 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:23:58,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:23:58,324 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:23:58,324 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:23:58,325 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:23:58,325 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:23:58,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:23:58,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:23:58,326 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:23:58,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:23:58,326 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:23:58,326 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 17:23:58,327 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:23:58,327 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:23:58,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:23:58,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 17:23:58,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:23:58,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 17:23:58,328 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 17:23:58,328 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:23:58,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 17:23:58,328 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:23:58,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 17:23:58,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:23:58,329 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:23:58,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:23:58,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:23:58,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:23:58,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:23:58,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 17:23:58,330 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:23:58,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:23:58,330 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:23:58,330 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 17:23:58,330 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:23:58,330 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:23:58,331 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:23:58,331 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_02d46f77-1429-4416-8652-75bf7ef63d32/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ecda181bd3fe1882667151a04232fb9d04292dd6ca3491d98fdc8de5d539856a [2022-12-13 17:23:58,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:23:58,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:23:58,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:23:58,528 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:23:58,529 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:23:58,530 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c [2022-12-13 17:24:01,050 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:24:01,235 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:24:01,235 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c [2022-12-13 17:24:01,244 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/data/9be8cd2b2/3b8875d56d48407e8657054995a4d1d2/FLAG64dd80268 [2022-12-13 17:24:01,610 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/data/9be8cd2b2/3b8875d56d48407e8657054995a4d1d2 [2022-12-13 17:24:01,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:24:01,614 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:24:01,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:24:01,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:24:01,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:24:01,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:24:01" (1/1) ... [2022-12-13 17:24:01,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8d08c47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:24:01, skipping insertion in model container [2022-12-13 17:24:01,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:24:01" (1/1) ... [2022-12-13 17:24:01,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:24:01,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:24:01,752 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:24:01,755 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:24:01,756 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:24:01,757 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:24:01,759 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:24:01,760 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:24:01,760 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:24:01,761 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:24:01,762 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:24:01,763 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:24:01,768 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_02d46f77-1429-4416-8652-75bf7ef63d32/sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c[2924,2937] [2022-12-13 17:24:01,773 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:24:01,781 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:24:01,791 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:24:01,792 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:24:01,793 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:24:01,794 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:24:01,794 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:24:01,795 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:24:01,795 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:24:01,797 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:24:01,797 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:24:01,798 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:24:01,802 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_02d46f77-1429-4416-8652-75bf7ef63d32/sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c[2924,2937] [2022-12-13 17:24:01,805 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:24:01,818 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:24:01,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:24:01 WrapperNode [2022-12-13 17:24:01,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:24:01,820 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:24:01,820 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:24:01,821 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:24:01,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:24:01" (1/1) ... [2022-12-13 17:24:01,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:24:01" (1/1) ... [2022-12-13 17:24:01,860 INFO L138 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 201 [2022-12-13 17:24:01,861 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:24:01,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:24:01,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:24:01,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:24:01,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:24:01" (1/1) ... [2022-12-13 17:24:01,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:24:01" (1/1) ... [2022-12-13 17:24:01,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:24:01" (1/1) ... [2022-12-13 17:24:01,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:24:01" (1/1) ... [2022-12-13 17:24:01,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:24:01" (1/1) ... [2022-12-13 17:24:01,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:24:01" (1/1) ... [2022-12-13 17:24:01,888 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:24:01" (1/1) ... [2022-12-13 17:24:01,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:24:01" (1/1) ... [2022-12-13 17:24:01,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:24:01,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:24:01,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:24:01,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:24:01,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:24:01" (1/1) ... [2022-12-13 17:24:01,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:24:01,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:24:01,920 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:24:01,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:24:01,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:24:01,954 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 17:24:01,954 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 17:24:01,954 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 17:24:01,954 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 17:24:01,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:24:01,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 17:24:01,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 17:24:01,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 17:24:01,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 17:24:01,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 17:24:01,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:24:01,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:24:01,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 17:24:01,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 17:24:01,956 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 17:24:02,049 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:24:02,051 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:24:02,307 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:24:02,364 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:24:02,364 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 17:24:02,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:24:02 BoogieIcfgContainer [2022-12-13 17:24:02,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:24:02,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:24:02,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:24:02,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:24:02,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:24:01" (1/3) ... [2022-12-13 17:24:02,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dcd3230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:24:02, skipping insertion in model container [2022-12-13 17:24:02,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:24:01" (2/3) ... [2022-12-13 17:24:02,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dcd3230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:24:02, skipping insertion in model container [2022-12-13 17:24:02,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:24:02" (3/3) ... [2022-12-13 17:24:02,372 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-dec-subseq.wvr.c [2022-12-13 17:24:02,377 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 17:24:02,384 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:24:02,385 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-12-13 17:24:02,385 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 17:24:02,434 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 17:24:02,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 202 transitions, 420 flow [2022-12-13 17:24:02,510 INFO L130 PetriNetUnfolder]: 15/200 cut-off events. [2022-12-13 17:24:02,510 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 17:24:02,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 200 events. 15/200 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 158 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 164. Up to 2 conditions per place. [2022-12-13 17:24:02,514 INFO L82 GeneralOperation]: Start removeDead. Operand has 194 places, 202 transitions, 420 flow [2022-12-13 17:24:02,518 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 174 places, 181 transitions, 371 flow [2022-12-13 17:24:02,520 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 17:24:02,528 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 174 places, 181 transitions, 371 flow [2022-12-13 17:24:02,530 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 174 places, 181 transitions, 371 flow [2022-12-13 17:24:02,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 181 transitions, 371 flow [2022-12-13 17:24:02,555 INFO L130 PetriNetUnfolder]: 14/181 cut-off events. [2022-12-13 17:24:02,555 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 17:24:02,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 181 events. 14/181 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 154 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 164. Up to 2 conditions per place. [2022-12-13 17:24:02,557 INFO L119 LiptonReduction]: Number of co-enabled transitions 942 [2022-12-13 17:24:07,069 INFO L134 LiptonReduction]: Checked pairs total: 1558 [2022-12-13 17:24:07,069 INFO L136 LiptonReduction]: Total number of compositions: 200 [2022-12-13 17:24:07,082 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:24:07,086 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;@1b510307, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:24:07,086 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-12-13 17:24:07,088 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 17:24:07,088 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:24:07,088 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:24:07,089 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 17:24:07,089 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 17:24:07,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:24:07,093 INFO L85 PathProgramCache]: Analyzing trace with hash 26788, now seen corresponding path program 1 times [2022-12-13 17:24:07,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:24:07,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674379802] [2022-12-13 17:24:07,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:24:07,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:24:07,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:24:07,270 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 17:24:07,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:24:07,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674379802] [2022-12-13 17:24:07,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674379802] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:24:07,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:24:07,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:24:07,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957665461] [2022-12-13 17:24:07,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:24:07,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:24:07,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:24:07,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:24:07,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:24:07,327 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 402 [2022-12-13 17:24:07,329 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:24:07,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:24:07,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 402 [2022-12-13 17:24:07,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:24:07,470 INFO L130 PetriNetUnfolder]: 353/575 cut-off events. [2022-12-13 17:24:07,470 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-12-13 17:24:07,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1192 conditions, 575 events. 353/575 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 2597 event pairs, 212 based on Foata normal form. 0/317 useless extension candidates. Maximal degree in co-relation 524. Up to 287 conditions per place. [2022-12-13 17:24:07,474 INFO L137 encePairwiseOnDemand]: 392/402 looper letters, 47 selfloop transitions, 4 changer transitions 0/52 dead transitions. [2022-12-13 17:24:07,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 52 transitions, 224 flow [2022-12-13 17:24:07,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:24:07,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:24:07,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 575 transitions. [2022-12-13 17:24:07,486 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4767827529021559 [2022-12-13 17:24:07,487 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 575 transitions. [2022-12-13 17:24:07,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 575 transitions. [2022-12-13 17:24:07,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:24:07,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 575 transitions. [2022-12-13 17:24:07,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 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 17:24:07,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 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 17:24:07,498 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 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 17:24:07,499 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 71 flow. Second operand 3 states and 575 transitions. [2022-12-13 17:24:07,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 52 transitions, 224 flow [2022-12-13 17:24:07,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 52 transitions, 214 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 17:24:07,504 INFO L231 Difference]: Finished difference. Result has 32 places, 32 transitions, 98 flow [2022-12-13 17:24:07,505 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=32, PETRI_TRANSITIONS=32} [2022-12-13 17:24:07,508 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2022-12-13 17:24:07,508 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 32 transitions, 98 flow [2022-12-13 17:24:07,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:24:07,509 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:24:07,509 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 17:24:07,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 17:24:07,509 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 17:24:07,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:24:07,509 INFO L85 PathProgramCache]: Analyzing trace with hash 832168, now seen corresponding path program 1 times [2022-12-13 17:24:07,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:24:07,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936930190] [2022-12-13 17:24:07,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:24:07,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:24:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:24:07,585 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 17:24:07,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:24:07,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936930190] [2022-12-13 17:24:07,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936930190] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:24:07,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940516693] [2022-12-13 17:24:07,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:24:07,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:24:07,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:24:07,588 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:24:07,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 17:24:07,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:24:07,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 17:24:07,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:24:07,694 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 17:24:07,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:24:07,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940516693] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:24:07,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:24:07,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-12-13 17:24:07,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766356471] [2022-12-13 17:24:07,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:24:07,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:24:07,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:24:07,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:24:07,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:24:07,723 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 402 [2022-12-13 17:24:07,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 32 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 172.75) internal successors, (691), 4 states have internal predecessors, (691), 0 states have call successors, (0), 0 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 17:24:07,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:24:07,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 402 [2022-12-13 17:24:07,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:24:07,864 INFO L130 PetriNetUnfolder]: 353/573 cut-off events. [2022-12-13 17:24:07,864 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 17:24:07,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1189 conditions, 573 events. 353/573 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 2567 event pairs, 212 based on Foata normal form. 0/321 useless extension candidates. Maximal degree in co-relation 583. Up to 284 conditions per place. [2022-12-13 17:24:07,868 INFO L137 encePairwiseOnDemand]: 396/402 looper letters, 45 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2022-12-13 17:24:07,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 50 transitions, 232 flow [2022-12-13 17:24:07,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:24:07,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 17:24:07,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 739 transitions. [2022-12-13 17:24:07,872 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4595771144278607 [2022-12-13 17:24:07,872 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 739 transitions. [2022-12-13 17:24:07,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 739 transitions. [2022-12-13 17:24:07,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:24:07,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 739 transitions. [2022-12-13 17:24:07,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 184.75) internal successors, (739), 4 states have internal predecessors, (739), 0 states have call successors, (0), 0 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 17:24:07,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 402.0) internal successors, (2010), 5 states have internal predecessors, (2010), 0 states have call successors, (0), 0 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 17:24:07,881 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 402.0) internal successors, (2010), 5 states have internal predecessors, (2010), 0 states have call successors, (0), 0 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 17:24:07,881 INFO L175 Difference]: Start difference. First operand has 32 places, 32 transitions, 98 flow. Second operand 4 states and 739 transitions. [2022-12-13 17:24:07,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 50 transitions, 232 flow [2022-12-13 17:24:07,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 50 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:24:07,882 INFO L231 Difference]: Finished difference. Result has 31 places, 30 transitions, 90 flow [2022-12-13 17:24:07,883 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=31, PETRI_TRANSITIONS=30} [2022-12-13 17:24:07,883 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2022-12-13 17:24:07,883 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 30 transitions, 90 flow [2022-12-13 17:24:07,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.75) internal successors, (691), 4 states have internal predecessors, (691), 0 states have call successors, (0), 0 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 17:24:07,884 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:24:07,884 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 17:24:07,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 17:24:08,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:24:08,086 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 17:24:08,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:24:08,087 INFO L85 PathProgramCache]: Analyzing trace with hash 832199, now seen corresponding path program 1 times [2022-12-13 17:24:08,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:24:08,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264234998] [2022-12-13 17:24:08,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:24:08,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:24:08,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:24:08,248 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 17:24:08,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:24:08,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264234998] [2022-12-13 17:24:08,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264234998] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:24:08,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147027338] [2022-12-13 17:24:08,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:24:08,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:24:08,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:24:08,251 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:24:08,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 17:24:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:24:08,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 17:24:08,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:24:08,306 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 17:24:08,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:24:08,320 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 17:24:08,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147027338] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:24:08,321 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:24:08,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 17:24:08,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313379673] [2022-12-13 17:24:08,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:24:08,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:24:08,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:24:08,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:24:08,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:24:08,362 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 402 [2022-12-13 17:24:08,364 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 30 transitions, 90 flow. Second operand has 7 states, 7 states have (on average 173.14285714285714) internal successors, (1212), 7 states have internal predecessors, (1212), 0 states have call successors, (0), 0 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 17:24:08,364 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:24:08,364 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 402 [2022-12-13 17:24:08,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:24:08,627 INFO L130 PetriNetUnfolder]: 881/1428 cut-off events. [2022-12-13 17:24:08,627 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-13 17:24:08,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2950 conditions, 1428 events. 881/1428 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7534 event pairs, 530 based on Foata normal form. 0/819 useless extension candidates. Maximal degree in co-relation 2323. Up to 285 conditions per place. [2022-12-13 17:24:08,633 INFO L137 encePairwiseOnDemand]: 396/402 looper letters, 105 selfloop transitions, 13 changer transitions 0/119 dead transitions. [2022-12-13 17:24:08,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 119 transitions, 544 flow [2022-12-13 17:24:08,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:24:08,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 17:24:08,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1156 transitions. [2022-12-13 17:24:08,643 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4792703150912106 [2022-12-13 17:24:08,643 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1156 transitions. [2022-12-13 17:24:08,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1156 transitions. [2022-12-13 17:24:08,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:24:08,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1156 transitions. [2022-12-13 17:24:08,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 192.66666666666666) internal successors, (1156), 6 states have internal predecessors, (1156), 0 states have call successors, (0), 0 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 17:24:08,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 402.0) internal successors, (2814), 7 states have internal predecessors, (2814), 0 states have call successors, (0), 0 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 17:24:08,654 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 402.0) internal successors, (2814), 7 states have internal predecessors, (2814), 0 states have call successors, (0), 0 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 17:24:08,654 INFO L175 Difference]: Start difference. First operand has 31 places, 30 transitions, 90 flow. Second operand 6 states and 1156 transitions. [2022-12-13 17:24:08,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 119 transitions, 544 flow [2022-12-13 17:24:08,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 119 transitions, 536 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:24:08,656 INFO L231 Difference]: Finished difference. Result has 37 places, 39 transitions, 181 flow [2022-12-13 17:24:08,656 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=181, PETRI_PLACES=37, PETRI_TRANSITIONS=39} [2022-12-13 17:24:08,656 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2022-12-13 17:24:08,657 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 39 transitions, 181 flow [2022-12-13 17:24:08,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 173.14285714285714) internal successors, (1212), 7 states have internal predecessors, (1212), 0 states have call successors, (0), 0 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 17:24:08,657 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:24:08,657 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 17:24:08,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 17:24:08,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:24:08,858 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 17:24:08,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:24:08,858 INFO L85 PathProgramCache]: Analyzing trace with hash -976959037, now seen corresponding path program 2 times [2022-12-13 17:24:08,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:24:08,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524271536] [2022-12-13 17:24:08,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:24:08,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:24:08,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:24:08,974 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 17:24:08,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:24:08,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524271536] [2022-12-13 17:24:08,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524271536] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:24:08,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070045660] [2022-12-13 17:24:08,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:24:08,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:24:08,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:24:08,976 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:24:08,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 17:24:09,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 17:24:09,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:24:09,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 17:24:09,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:24:09,035 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 17:24:09,035 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:24:09,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070045660] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:24:09,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:24:09,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 17:24:09,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297258927] [2022-12-13 17:24:09,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:24:09,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:24:09,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:24:09,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:24:09,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:24:09,050 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 402 [2022-12-13 17:24:09,051 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 39 transitions, 181 flow. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 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 17:24:09,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:24:09,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 402 [2022-12-13 17:24:09,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:24:09,191 INFO L130 PetriNetUnfolder]: 881/1427 cut-off events. [2022-12-13 17:24:09,192 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-13 17:24:09,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2972 conditions, 1427 events. 881/1427 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7631 event pairs, 530 based on Foata normal form. 1/793 useless extension candidates. Maximal degree in co-relation 2333. Up to 1402 conditions per place. [2022-12-13 17:24:09,196 INFO L137 encePairwiseOnDemand]: 399/402 looper letters, 31 selfloop transitions, 6 changer transitions 0/38 dead transitions. [2022-12-13 17:24:09,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 38 transitions, 245 flow [2022-12-13 17:24:09,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:24:09,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:24:09,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 548 transitions. [2022-12-13 17:24:09,198 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45439469320066334 [2022-12-13 17:24:09,198 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 548 transitions. [2022-12-13 17:24:09,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 548 transitions. [2022-12-13 17:24:09,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:24:09,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 548 transitions. [2022-12-13 17:24:09,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 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 17:24:09,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 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 17:24:09,201 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 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 17:24:09,201 INFO L175 Difference]: Start difference. First operand has 37 places, 39 transitions, 181 flow. Second operand 3 states and 548 transitions. [2022-12-13 17:24:09,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 38 transitions, 245 flow [2022-12-13 17:24:09,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 38 transitions, 226 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 17:24:09,204 INFO L231 Difference]: Finished difference. Result has 37 places, 38 transitions, 164 flow [2022-12-13 17:24:09,204 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=37, PETRI_TRANSITIONS=38} [2022-12-13 17:24:09,204 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2022-12-13 17:24:09,205 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 38 transitions, 164 flow [2022-12-13 17:24:09,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 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 17:24:09,205 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:24:09,205 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 17:24:09,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 17:24:09,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:24:09,406 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 17:24:09,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:24:09,406 INFO L85 PathProgramCache]: Analyzing trace with hash -951506525, now seen corresponding path program 1 times [2022-12-13 17:24:09,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:24:09,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113049330] [2022-12-13 17:24:09,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:24:09,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:24:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:24:09,470 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 17:24:09,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:24:09,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113049330] [2022-12-13 17:24:09,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113049330] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:24:09,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:24:09,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:24:09,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329749460] [2022-12-13 17:24:09,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:24:09,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:24:09,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:24:09,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:24:09,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:24:09,483 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 402 [2022-12-13 17:24:09,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 38 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 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 17:24:09,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:24:09,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 402 [2022-12-13 17:24:09,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:24:09,746 INFO L130 PetriNetUnfolder]: 1651/2607 cut-off events. [2022-12-13 17:24:09,746 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-12-13 17:24:09,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5388 conditions, 2607 events. 1651/2607 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 15278 event pairs, 425 based on Foata normal form. 0/1512 useless extension candidates. Maximal degree in co-relation 5332. Up to 1556 conditions per place. [2022-12-13 17:24:09,763 INFO L137 encePairwiseOnDemand]: 398/402 looper letters, 51 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2022-12-13 17:24:09,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 54 transitions, 305 flow [2022-12-13 17:24:09,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:24:09,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:24:09,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 574 transitions. [2022-12-13 17:24:09,766 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4759535655058043 [2022-12-13 17:24:09,766 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 574 transitions. [2022-12-13 17:24:09,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 574 transitions. [2022-12-13 17:24:09,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:24:09,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 574 transitions. [2022-12-13 17:24:09,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 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 17:24:09,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 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 17:24:09,780 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 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 17:24:09,780 INFO L175 Difference]: Start difference. First operand has 37 places, 38 transitions, 164 flow. Second operand 3 states and 574 transitions. [2022-12-13 17:24:09,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 54 transitions, 305 flow [2022-12-13 17:24:09,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 54 transitions, 293 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:24:09,783 INFO L231 Difference]: Finished difference. Result has 38 places, 39 transitions, 166 flow [2022-12-13 17:24:09,783 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=38, PETRI_TRANSITIONS=39} [2022-12-13 17:24:09,783 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2022-12-13 17:24:09,784 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 39 transitions, 166 flow [2022-12-13 17:24:09,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 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 17:24:09,784 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:24:09,784 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 17:24:09,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 17:24:09,785 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 17:24:09,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:24:09,785 INFO L85 PathProgramCache]: Analyzing trace with hash -951509310, now seen corresponding path program 1 times [2022-12-13 17:24:09,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:24:09,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078449964] [2022-12-13 17:24:09,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:24:09,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:24:09,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:24:09,865 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 17:24:09,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:24:09,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078449964] [2022-12-13 17:24:09,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078449964] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:24:09,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:24:09,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:24:09,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445617646] [2022-12-13 17:24:09,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:24:09,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:24:09,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:24:09,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:24:09,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:24:09,905 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 402 [2022-12-13 17:24:09,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 169.5) internal successors, (678), 4 states have internal predecessors, (678), 0 states have call successors, (0), 0 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 17:24:09,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:24:09,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 402 [2022-12-13 17:24:09,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:24:10,242 INFO L130 PetriNetUnfolder]: 1976/3303 cut-off events. [2022-12-13 17:24:10,242 INFO L131 PetriNetUnfolder]: For 124/124 co-relation queries the response was YES. [2022-12-13 17:24:10,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7316 conditions, 3303 events. 1976/3303 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 21466 event pairs, 1320 based on Foata normal form. 60/2078 useless extension candidates. Maximal degree in co-relation 4498. Up to 2586 conditions per place. [2022-12-13 17:24:10,255 INFO L137 encePairwiseOnDemand]: 395/402 looper letters, 52 selfloop transitions, 3 changer transitions 4/60 dead transitions. [2022-12-13 17:24:10,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 60 transitions, 367 flow [2022-12-13 17:24:10,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:24:10,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 17:24:10,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 719 transitions. [2022-12-13 17:24:10,257 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44713930348258707 [2022-12-13 17:24:10,257 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 719 transitions. [2022-12-13 17:24:10,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 719 transitions. [2022-12-13 17:24:10,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:24:10,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 719 transitions. [2022-12-13 17:24:10,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 179.75) internal successors, (719), 4 states have internal predecessors, (719), 0 states have call successors, (0), 0 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 17:24:10,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 402.0) internal successors, (2010), 5 states have internal predecessors, (2010), 0 states have call successors, (0), 0 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 17:24:10,261 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 402.0) internal successors, (2010), 5 states have internal predecessors, (2010), 0 states have call successors, (0), 0 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 17:24:10,261 INFO L175 Difference]: Start difference. First operand has 38 places, 39 transitions, 166 flow. Second operand 4 states and 719 transitions. [2022-12-13 17:24:10,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 60 transitions, 367 flow [2022-12-13 17:24:10,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 60 transitions, 364 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:24:10,264 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 179 flow [2022-12-13 17:24:10,264 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2022-12-13 17:24:10,264 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2022-12-13 17:24:10,264 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 179 flow [2022-12-13 17:24:10,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 169.5) internal successors, (678), 4 states have internal predecessors, (678), 0 states have call successors, (0), 0 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 17:24:10,265 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:24:10,265 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:24:10,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 17:24:10,265 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 17:24:10,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:24:10,265 INFO L85 PathProgramCache]: Analyzing trace with hash -195508538, now seen corresponding path program 1 times [2022-12-13 17:24:10,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:24:10,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697591487] [2022-12-13 17:24:10,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:24:10,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:24:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:24:10,343 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 17:24:10,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:24:10,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697591487] [2022-12-13 17:24:10,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697591487] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:24:10,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524099660] [2022-12-13 17:24:10,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:24:10,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:24:10,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:24:10,345 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:24:10,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 17:24:10,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:24:10,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 17:24:10,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:24:10,450 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 17:24:10,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:24:10,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524099660] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:24:10,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:24:10,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2022-12-13 17:24:10,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856721593] [2022-12-13 17:24:10,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:24:10,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 17:24:10,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:24:10,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 17:24:10,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:24:10,523 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 402 [2022-12-13 17:24:10,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 167.4) internal successors, (837), 5 states have internal predecessors, (837), 0 states have call successors, (0), 0 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 17:24:10,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:24:10,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 402 [2022-12-13 17:24:10,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:24:10,758 INFO L130 PetriNetUnfolder]: 1474/2467 cut-off events. [2022-12-13 17:24:10,758 INFO L131 PetriNetUnfolder]: For 273/305 co-relation queries the response was YES. [2022-12-13 17:24:10,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5994 conditions, 2467 events. 1474/2467 cut-off events. For 273/305 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 15289 event pairs, 972 based on Foata normal form. 2/1725 useless extension candidates. Maximal degree in co-relation 4802. Up to 2430 conditions per place. [2022-12-13 17:24:10,768 INFO L137 encePairwiseOnDemand]: 397/402 looper letters, 30 selfloop transitions, 7 changer transitions 0/38 dead transitions. [2022-12-13 17:24:10,768 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 38 transitions, 249 flow [2022-12-13 17:24:10,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:24:10,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 17:24:10,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 691 transitions. [2022-12-13 17:24:10,770 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42972636815920395 [2022-12-13 17:24:10,770 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 691 transitions. [2022-12-13 17:24:10,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 691 transitions. [2022-12-13 17:24:10,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:24:10,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 691 transitions. [2022-12-13 17:24:10,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 172.75) internal successors, (691), 4 states have internal predecessors, (691), 0 states have call successors, (0), 0 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 17:24:10,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 402.0) internal successors, (2010), 5 states have internal predecessors, (2010), 0 states have call successors, (0), 0 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 17:24:10,773 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 402.0) internal successors, (2010), 5 states have internal predecessors, (2010), 0 states have call successors, (0), 0 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 17:24:10,773 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 179 flow. Second operand 4 states and 691 transitions. [2022-12-13 17:24:10,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 38 transitions, 249 flow [2022-12-13 17:24:10,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 243 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-13 17:24:10,775 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 191 flow [2022-12-13 17:24:10,775 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=191, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2022-12-13 17:24:10,776 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 10 predicate places. [2022-12-13 17:24:10,776 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 191 flow [2022-12-13 17:24:10,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 167.4) internal successors, (837), 5 states have internal predecessors, (837), 0 states have call successors, (0), 0 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 17:24:10,776 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:24:10,776 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2022-12-13 17:24:10,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 17:24:10,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 17:24:10,977 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 17:24:10,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:24:10,977 INFO L85 PathProgramCache]: Analyzing trace with hash 555846032, now seen corresponding path program 1 times [2022-12-13 17:24:10,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:24:10,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102320699] [2022-12-13 17:24:10,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:24:10,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:24:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:24:11,047 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 17:24:11,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:24:11,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102320699] [2022-12-13 17:24:11,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102320699] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:24:11,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511369173] [2022-12-13 17:24:11,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:24:11,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:24:11,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:24:11,049 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:24:11,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 17:24:11,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:24:11,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 17:24:11,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:24:11,128 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 17:24:11,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:24:11,170 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 17:24:11,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511369173] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:24:11,171 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:24:11,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-13 17:24:11,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901059451] [2022-12-13 17:24:11,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:24:11,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 17:24:11,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:24:11,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 17:24:11,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 17:24:11,238 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 402 [2022-12-13 17:24:11,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 191 flow. Second operand has 13 states, 13 states have (on average 173.15384615384616) internal successors, (2251), 13 states have internal predecessors, (2251), 0 states have call successors, (0), 0 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 17:24:11,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:24:11,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 402 [2022-12-13 17:24:11,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:24:11,951 INFO L130 PetriNetUnfolder]: 3682/6157 cut-off events. [2022-12-13 17:24:11,951 INFO L131 PetriNetUnfolder]: For 726/734 co-relation queries the response was YES. [2022-12-13 17:24:11,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14944 conditions, 6157 events. 3682/6157 cut-off events. For 726/734 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 41990 event pairs, 2430 based on Foata normal form. 12/4477 useless extension candidates. Maximal degree in co-relation 11916. Up to 1581 conditions per place. [2022-12-13 17:24:11,976 INFO L137 encePairwiseOnDemand]: 397/402 looper letters, 204 selfloop transitions, 31 changer transitions 0/236 dead transitions. [2022-12-13 17:24:11,976 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 236 transitions, 1327 flow [2022-12-13 17:24:11,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 17:24:11,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 17:24:11,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2295 transitions. [2022-12-13 17:24:11,984 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47574626865671643 [2022-12-13 17:24:11,984 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2295 transitions. [2022-12-13 17:24:11,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2295 transitions. [2022-12-13 17:24:11,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:24:11,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2295 transitions. [2022-12-13 17:24:11,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 191.25) internal successors, (2295), 12 states have internal predecessors, (2295), 0 states have call successors, (0), 0 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 17:24:12,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 402.0) internal successors, (5226), 13 states have internal predecessors, (5226), 0 states have call successors, (0), 0 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 17:24:12,002 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 402.0) internal successors, (5226), 13 states have internal predecessors, (5226), 0 states have call successors, (0), 0 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 17:24:12,002 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 191 flow. Second operand 12 states and 2295 transitions. [2022-12-13 17:24:12,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 236 transitions, 1327 flow [2022-12-13 17:24:12,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 236 transitions, 1298 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-12-13 17:24:12,012 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 396 flow [2022-12-13 17:24:12,012 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=396, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2022-12-13 17:24:12,012 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 24 predicate places. [2022-12-13 17:24:12,013 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 396 flow [2022-12-13 17:24:12,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 173.15384615384616) internal successors, (2251), 13 states have internal predecessors, (2251), 0 states have call successors, (0), 0 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 17:24:12,014 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:24:12,014 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:24:12,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 17:24:12,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:24:12,216 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 17:24:12,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:24:12,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1777542288, now seen corresponding path program 1 times [2022-12-13 17:24:12,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:24:12,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40744740] [2022-12-13 17:24:12,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:24:12,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:24:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:24:12,337 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 17:24:12,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:24:12,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40744740] [2022-12-13 17:24:12,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40744740] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:24:12,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136317273] [2022-12-13 17:24:12,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:24:12,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:24:12,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:24:12,339 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:24:12,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 17:24:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:24:12,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 17:24:12,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:24:12,417 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 17:24:12,417 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:24:12,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136317273] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:24:12,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:24:12,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2022-12-13 17:24:12,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533956385] [2022-12-13 17:24:12,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:24:12,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:24:12,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:24:12,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:24:12,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:24:12,422 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 402 [2022-12-13 17:24:12,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 396 flow. Second operand has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 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 17:24:12,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:24:12,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 402 [2022-12-13 17:24:12,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:24:12,779 INFO L130 PetriNetUnfolder]: 2642/4617 cut-off events. [2022-12-13 17:24:12,779 INFO L131 PetriNetUnfolder]: For 660/690 co-relation queries the response was YES. [2022-12-13 17:24:12,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10924 conditions, 4617 events. 2642/4617 cut-off events. For 660/690 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 31453 event pairs, 1790 based on Foata normal form. 0/3667 useless extension candidates. Maximal degree in co-relation 8695. Up to 4537 conditions per place. [2022-12-13 17:24:12,800 INFO L137 encePairwiseOnDemand]: 399/402 looper letters, 49 selfloop transitions, 1 changer transitions 3/54 dead transitions. [2022-12-13 17:24:12,801 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 54 transitions, 494 flow [2022-12-13 17:24:12,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:24:12,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:24:12,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 552 transitions. [2022-12-13 17:24:12,802 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4577114427860697 [2022-12-13 17:24:12,802 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 552 transitions. [2022-12-13 17:24:12,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 552 transitions. [2022-12-13 17:24:12,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:24:12,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 552 transitions. [2022-12-13 17:24:12,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 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 17:24:12,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 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 17:24:12,805 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 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 17:24:12,805 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 396 flow. Second operand 3 states and 552 transitions. [2022-12-13 17:24:12,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 54 transitions, 494 flow [2022-12-13 17:24:12,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 54 transitions, 404 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-12-13 17:24:12,808 INFO L231 Difference]: Finished difference. Result has 52 places, 51 transitions, 293 flow [2022-12-13 17:24:12,808 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=293, PETRI_PLACES=52, PETRI_TRANSITIONS=51} [2022-12-13 17:24:12,809 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 19 predicate places. [2022-12-13 17:24:12,809 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 51 transitions, 293 flow [2022-12-13 17:24:12,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 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 17:24:12,809 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:24:12,809 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:24:12,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 17:24:13,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:24:13,010 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 17:24:13,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:24:13,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1971048384, now seen corresponding path program 1 times [2022-12-13 17:24:13,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:24:13,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295312502] [2022-12-13 17:24:13,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:24:13,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:24:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:24:13,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:24:13,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:24:13,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295312502] [2022-12-13 17:24:13,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295312502] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:24:13,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650352105] [2022-12-13 17:24:13,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:24:13,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:24:13,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:24:13,078 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:24:13,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 17:24:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:24:13,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 17:24:13,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:24:13,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:24:13,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:24:13,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:24:13,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650352105] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:24:13,224 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:24:13,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 6, 6] total 12 [2022-12-13 17:24:13,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448741811] [2022-12-13 17:24:13,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:24:13,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 17:24:13,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:24:13,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 17:24:13,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2022-12-13 17:24:13,393 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 402 [2022-12-13 17:24:13,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 293 flow. Second operand has 13 states, 13 states have (on average 162.92307692307693) internal successors, (2118), 13 states have internal predecessors, (2118), 0 states have call successors, (0), 0 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 17:24:13,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:24:13,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 402 [2022-12-13 17:24:13,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:24:13,873 INFO L130 PetriNetUnfolder]: 2712/4581 cut-off events. [2022-12-13 17:24:13,873 INFO L131 PetriNetUnfolder]: For 580/580 co-relation queries the response was YES. [2022-12-13 17:24:13,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11013 conditions, 4581 events. 2712/4581 cut-off events. For 580/580 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 29342 event pairs, 487 based on Foata normal form. 16/4006 useless extension candidates. Maximal degree in co-relation 10991. Up to 1836 conditions per place. [2022-12-13 17:24:13,887 INFO L137 encePairwiseOnDemand]: 393/402 looper letters, 54 selfloop transitions, 17 changer transitions 19/91 dead transitions. [2022-12-13 17:24:13,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 91 transitions, 582 flow [2022-12-13 17:24:13,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 17:24:13,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 17:24:13,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1675 transitions. [2022-12-13 17:24:13,891 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2022-12-13 17:24:13,891 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1675 transitions. [2022-12-13 17:24:13,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1675 transitions. [2022-12-13 17:24:13,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:24:13,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1675 transitions. [2022-12-13 17:24:13,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 167.5) internal successors, (1675), 10 states have internal predecessors, (1675), 0 states have call successors, (0), 0 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 17:24:13,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 402.0) internal successors, (4422), 11 states have internal predecessors, (4422), 0 states have call successors, (0), 0 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 17:24:13,901 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 402.0) internal successors, (4422), 11 states have internal predecessors, (4422), 0 states have call successors, (0), 0 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 17:24:13,901 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 293 flow. Second operand 10 states and 1675 transitions. [2022-12-13 17:24:13,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 91 transitions, 582 flow [2022-12-13 17:24:13,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 91 transitions, 581 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:24:13,908 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 344 flow [2022-12-13 17:24:13,908 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=344, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2022-12-13 17:24:13,908 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 27 predicate places. [2022-12-13 17:24:13,908 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 344 flow [2022-12-13 17:24:13,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 162.92307692307693) internal successors, (2118), 13 states have internal predecessors, (2118), 0 states have call successors, (0), 0 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 17:24:13,909 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:24:13,909 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2022-12-13 17:24:13,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 17:24:14,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 17:24:14,111 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 17:24:14,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:24:14,111 INFO L85 PathProgramCache]: Analyzing trace with hash 546941496, now seen corresponding path program 2 times [2022-12-13 17:24:14,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:24:14,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093537145] [2022-12-13 17:24:14,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:24:14,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:24:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:24:14,182 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 17:24:14,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:24:14,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093537145] [2022-12-13 17:24:14,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093537145] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:24:14,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509829114] [2022-12-13 17:24:14,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:24:14,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:24:14,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:24:14,184 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:24:14,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 17:24:14,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 17:24:14,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:24:14,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 17:24:14,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:24:14,260 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 17:24:14,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:24:14,279 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 17:24:14,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509829114] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:24:14,279 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:24:14,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 5 [2022-12-13 17:24:14,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620716529] [2022-12-13 17:24:14,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:24:14,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:24:14,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:24:14,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:24:14,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:24:14,310 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 402 [2022-12-13 17:24:14,311 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 344 flow. Second operand has 7 states, 7 states have (on average 175.85714285714286) internal successors, (1231), 7 states have internal predecessors, (1231), 0 states have call successors, (0), 0 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 17:24:14,311 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:24:14,311 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 402 [2022-12-13 17:24:14,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:24:14,834 INFO L130 PetriNetUnfolder]: 3594/5906 cut-off events. [2022-12-13 17:24:14,835 INFO L131 PetriNetUnfolder]: For 1896/1896 co-relation queries the response was YES. [2022-12-13 17:24:14,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16140 conditions, 5906 events. 3594/5906 cut-off events. For 1896/1896 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 37772 event pairs, 441 based on Foata normal form. 0/5114 useless extension candidates. Maximal degree in co-relation 16114. Up to 1638 conditions per place. [2022-12-13 17:24:14,845 INFO L137 encePairwiseOnDemand]: 397/402 looper letters, 34 selfloop transitions, 1 changer transitions 55/90 dead transitions. [2022-12-13 17:24:14,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 90 transitions, 636 flow [2022-12-13 17:24:14,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:24:14,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 17:24:14,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1272 transitions. [2022-12-13 17:24:14,847 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4520255863539446 [2022-12-13 17:24:14,848 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1272 transitions. [2022-12-13 17:24:14,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1272 transitions. [2022-12-13 17:24:14,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:24:14,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1272 transitions. [2022-12-13 17:24:14,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 181.71428571428572) internal successors, (1272), 7 states have internal predecessors, (1272), 0 states have call successors, (0), 0 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 17:24:14,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 402.0) internal successors, (3216), 8 states have internal predecessors, (3216), 0 states have call successors, (0), 0 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 17:24:14,852 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 402.0) internal successors, (3216), 8 states have internal predecessors, (3216), 0 states have call successors, (0), 0 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 17:24:14,852 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 344 flow. Second operand 7 states and 1272 transitions. [2022-12-13 17:24:14,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 90 transitions, 636 flow [2022-12-13 17:24:14,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 90 transitions, 597 flow, removed 12 selfloop flow, removed 4 redundant places. [2022-12-13 17:24:14,863 INFO L231 Difference]: Finished difference. Result has 59 places, 35 transitions, 263 flow [2022-12-13 17:24:14,863 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=263, PETRI_PLACES=59, PETRI_TRANSITIONS=35} [2022-12-13 17:24:14,864 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 26 predicate places. [2022-12-13 17:24:14,864 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 35 transitions, 263 flow [2022-12-13 17:24:14,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 175.85714285714286) internal successors, (1231), 7 states have internal predecessors, (1231), 0 states have call successors, (0), 0 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 17:24:14,865 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:24:14,865 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2022-12-13 17:24:14,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 17:24:15,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 17:24:15,066 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 17:24:15,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:24:15,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1762787632, now seen corresponding path program 2 times [2022-12-13 17:24:15,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:24:15,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890653829] [2022-12-13 17:24:15,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:24:15,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:24:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:24:15,218 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:24:15,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:24:15,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890653829] [2022-12-13 17:24:15,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890653829] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:24:15,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692019959] [2022-12-13 17:24:15,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:24:15,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:24:15,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:24:15,220 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:24:15,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 17:24:15,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 17:24:15,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:24:15,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 17:24:15,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:24:15,327 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 17:24:15,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:24:15,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692019959] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:24:15,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:24:15,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2022-12-13 17:24:15,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25477576] [2022-12-13 17:24:15,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:24:15,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:24:15,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:24:15,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:24:15,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2022-12-13 17:24:15,351 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 402 [2022-12-13 17:24:15,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 35 transitions, 263 flow. Second operand has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 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 17:24:15,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:24:15,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 402 [2022-12-13 17:24:15,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:24:15,374 INFO L130 PetriNetUnfolder]: 12/45 cut-off events. [2022-12-13 17:24:15,374 INFO L131 PetriNetUnfolder]: For 152/152 co-relation queries the response was YES. [2022-12-13 17:24:15,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 45 events. 12/45 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 69 event pairs, 0 based on Foata normal form. 2/47 useless extension candidates. Maximal degree in co-relation 187. Up to 45 conditions per place. [2022-12-13 17:24:15,374 INFO L137 encePairwiseOnDemand]: 400/402 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2022-12-13 17:24:15,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 34 transitions, 307 flow [2022-12-13 17:24:15,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:24:15,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:24:15,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 521 transitions. [2022-12-13 17:24:15,377 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4320066334991708 [2022-12-13 17:24:15,377 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 521 transitions. [2022-12-13 17:24:15,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 521 transitions. [2022-12-13 17:24:15,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:24:15,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 521 transitions. [2022-12-13 17:24:15,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 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 17:24:15,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 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 17:24:15,382 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 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 17:24:15,382 INFO L175 Difference]: Start difference. First operand has 59 places, 35 transitions, 263 flow. Second operand 3 states and 521 transitions. [2022-12-13 17:24:15,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 34 transitions, 307 flow [2022-12-13 17:24:15,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 34 transitions, 215 flow, removed 2 selfloop flow, removed 16 redundant places. [2022-12-13 17:24:15,384 INFO L231 Difference]: Finished difference. Result has 23 places, 0 transitions, 0 flow [2022-12-13 17:24:15,384 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=23, PETRI_TRANSITIONS=0} [2022-12-13 17:24:15,385 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, -10 predicate places. [2022-12-13 17:24:15,385 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 0 transitions, 0 flow [2022-12-13 17:24:15,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 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 17:24:15,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2022-12-13 17:24:15,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-12-13 17:24:15,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-12-13 17:24:15,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-12-13 17:24:15,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-12-13 17:24:15,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-12-13 17:24:15,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-12-13 17:24:15,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-12-13 17:24:15,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2022-12-13 17:24:15,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2022-12-13 17:24:15,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 18 remaining) [2022-12-13 17:24:15,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 18 remaining) [2022-12-13 17:24:15,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-12-13 17:24:15,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-12-13 17:24:15,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-12-13 17:24:15,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-12-13 17:24:15,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-12-13 17:24:15,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-12-13 17:24:15,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 17:24:15,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 17:24:15,591 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 17:24:15,609 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 17:24:15,609 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 17:24:15,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 05:24:15 BasicIcfg [2022-12-13 17:24:15,621 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 17:24:15,622 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 17:24:15,622 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 17:24:15,622 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 17:24:15,623 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:24:02" (3/4) ... [2022-12-13 17:24:15,627 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 17:24:15,635 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 17:24:15,635 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 17:24:15,642 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2022-12-13 17:24:15,642 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 17:24:15,643 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 17:24:15,643 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 17:24:15,684 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 17:24:15,684 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 17:24:15,685 INFO L158 Benchmark]: Toolchain (without parser) took 14070.66ms. Allocated memory was 134.2MB in the beginning and 390.1MB in the end (delta: 255.9MB). Free memory was 106.9MB in the beginning and 243.9MB in the end (delta: -137.1MB). Peak memory consumption was 118.8MB. Max. memory is 16.1GB. [2022-12-13 17:24:15,685 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 107.0MB. Free memory is still 82.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 17:24:15,685 INFO L158 Benchmark]: CACSL2BoogieTranslator took 204.46ms. Allocated memory is still 134.2MB. Free memory was 106.9MB in the beginning and 93.5MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 17:24:15,686 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.48ms. Allocated memory is still 134.2MB. Free memory was 93.5MB in the beginning and 91.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 17:24:15,686 INFO L158 Benchmark]: Boogie Preprocessor took 32.17ms. Allocated memory is still 134.2MB. Free memory was 91.5MB in the beginning and 90.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 17:24:15,686 INFO L158 Benchmark]: RCFGBuilder took 471.44ms. Allocated memory is still 134.2MB. Free memory was 90.1MB in the beginning and 82.9MB in the end (delta: 7.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 17:24:15,686 INFO L158 Benchmark]: TraceAbstraction took 13253.57ms. Allocated memory was 134.2MB in the beginning and 390.1MB in the end (delta: 255.9MB). Free memory was 82.2MB in the beginning and 248.1MB in the end (delta: -166.0MB). Peak memory consumption was 93.5MB. Max. memory is 16.1GB. [2022-12-13 17:24:15,687 INFO L158 Benchmark]: Witness Printer took 62.30ms. Allocated memory is still 390.1MB. Free memory was 248.1MB in the beginning and 243.9MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 17:24:15,689 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 107.0MB. Free memory is still 82.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 204.46ms. Allocated memory is still 134.2MB. Free memory was 106.9MB in the beginning and 93.5MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.48ms. Allocated memory is still 134.2MB. Free memory was 93.5MB in the beginning and 91.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.17ms. Allocated memory is still 134.2MB. Free memory was 91.5MB in the beginning and 90.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 471.44ms. Allocated memory is still 134.2MB. Free memory was 90.1MB in the beginning and 82.9MB in the end (delta: 7.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 13253.57ms. Allocated memory was 134.2MB in the beginning and 390.1MB in the end (delta: 255.9MB). Free memory was 82.2MB in the beginning and 248.1MB in the end (delta: -166.0MB). Peak memory consumption was 93.5MB. Max. memory is 16.1GB. * Witness Printer took 62.30ms. Allocated memory is still 390.1MB. Free memory was 248.1MB in the beginning and 243.9MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.5s, 174 PlacesBefore, 33 PlacesAfterwards, 181 TransitionsBefore, 31 TransitionsAfterwards, 942 CoEnabledTransitionPairs, 8 FixpointIterations, 135 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 26 TrivialYvCompositions, 4 ConcurrentYvCompositions, 9 ChoiceCompositions, 200 TotalNumberOfCompositions, 1558 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1172, independent: 1107, independent conditional: 0, independent unconditional: 1107, dependent: 65, dependent conditional: 0, dependent unconditional: 65, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 482, independent: 469, independent conditional: 0, independent unconditional: 469, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1172, independent: 638, independent conditional: 0, independent unconditional: 638, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 482, unknown conditional: 0, unknown unconditional: 482] , Statistics on independence cache: Total cache size (in pairs): 67, Positive cache size: 59, Positive conditional cache size: 0, Positive unconditional cache size: 59, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: 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 5 procedures, 218 locations, 18 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: 13.1s, OverallIterations: 12, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1750 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1470 mSDsluCounter, 237 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 198 mSDsCounter, 163 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1978 IncrementalHoareTripleChecker+Invalid, 2141 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 163 mSolverCounterUnsat, 39 mSDtfsCounter, 1978 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 139 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=396occurred in iteration=8, InterpolantAutomatonStates: 62, 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, 0.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 150 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 540 SizeOfPredicates, 17 NumberOfNonLiveVariables, 1344 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 25 InterpolantComputations, 8 PerfectInterpolantSequences, 92/207 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 17:24:15,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02d46f77-1429-4416-8652-75bf7ef63d32/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