./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e64ca07-71a6-4f3f-8367-d7c5a40564da/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e64ca07-71a6-4f3f-8367-d7c5a40564da/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e64ca07-71a6-4f3f-8367-d7c5a40564da/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e64ca07-71a6-4f3f-8367-d7c5a40564da/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e64ca07-71a6-4f3f-8367-d7c5a40564da/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e64ca07-71a6-4f3f-8367-d7c5a40564da/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8fab2e995569cc819974baee7d52d8d4bdabd2a2896c83fb3b8d07b44f394c5b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 17:02:21,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:02:21,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:02:21,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:02:21,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:02:21,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:02:21,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:02:21,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:02:21,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:02:21,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:02:21,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:02:21,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:02:21,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:02:21,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:02:21,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:02:21,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:02:21,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:02:21,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:02:21,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:02:21,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:02:21,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:02:21,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:02:21,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:02:21,692 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:02:21,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:02:21,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:02:21,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:02:21,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:02:21,705 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:02:21,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:02:21,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:02:21,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:02:21,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:02:21,712 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:02:21,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:02:21,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:02:21,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:02:21,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:02:21,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:02:21,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:02:21,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:02:21,721 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e64ca07-71a6-4f3f-8367-d7c5a40564da/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 17:02:21,745 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:02:21,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:02:21,745 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:02:21,746 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:02:21,746 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:02:21,747 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:02:21,747 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:02:21,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:02:21,748 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:02:21,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:02:21,748 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:02:21,749 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:02:21,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:02:21,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:02:21,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:02:21,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:02:21,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:02:21,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:02:21,750 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 17:02:21,750 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:02:21,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:02:21,751 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:02:21,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:02:21,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:02:21,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:02:21,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:02:21,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:02:21,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:02:21,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:02:21,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:02:21,752 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:02:21,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:02:21,753 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:02:21,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:02:21,753 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:02:21,753 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:02:21,754 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_3e64ca07-71a6-4f3f-8367-d7c5a40564da/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e64ca07-71a6-4f3f-8367-d7c5a40564da/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fab2e995569cc819974baee7d52d8d4bdabd2a2896c83fb3b8d07b44f394c5b [2022-11-25 17:02:22,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:02:22,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:02:22,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:02:22,046 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:02:22,046 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:02:22,048 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e64ca07-71a6-4f3f-8367-d7c5a40564da/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i [2022-11-25 17:02:25,138 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:02:25,464 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:02:25,465 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e64ca07-71a6-4f3f-8367-d7c5a40564da/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i [2022-11-25 17:02:25,485 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e64ca07-71a6-4f3f-8367-d7c5a40564da/bin/uautomizer-ZsLfNo2U6R/data/35c8fd9c1/13f0a2dc838f45448e1a051ac301153d/FLAG45c8f7ef6 [2022-11-25 17:02:25,498 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e64ca07-71a6-4f3f-8367-d7c5a40564da/bin/uautomizer-ZsLfNo2U6R/data/35c8fd9c1/13f0a2dc838f45448e1a051ac301153d [2022-11-25 17:02:25,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:02:25,503 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:02:25,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:02:25,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:02:25,508 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:02:25,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:02:25" (1/1) ... [2022-11-25 17:02:25,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65c2203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:25, skipping insertion in model container [2022-11-25 17:02:25,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:02:25" (1/1) ... [2022-11-25 17:02:25,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:02:25,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:02:25,743 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 17:02:25,898 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:02:25,898 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:02:25,900 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:02:25,900 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:02:25,900 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:02:25,901 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:02:25,901 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:02:25,901 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:02:25,902 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:02:25,902 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:02:25,903 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_3e64ca07-71a6-4f3f-8367-d7c5a40564da/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i[31246,31259] [2022-11-25 17:02:25,910 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:02:25,919 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:02:25,936 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 17:02:25,972 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:02:25,974 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:02:25,976 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:02:25,976 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:02:25,977 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:02:25,977 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:02:25,978 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:02:25,978 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:02:25,979 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:02:25,980 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:02:25,981 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_3e64ca07-71a6-4f3f-8367-d7c5a40564da/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i[31246,31259] [2022-11-25 17:02:25,986 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:02:26,030 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:02:26,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:26 WrapperNode [2022-11-25 17:02:26,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:02:26,032 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:02:26,032 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:02:26,032 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:02:26,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:26" (1/1) ... [2022-11-25 17:02:26,056 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:26" (1/1) ... [2022-11-25 17:02:26,083 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 118 [2022-11-25 17:02:26,083 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:02:26,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:02:26,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:02:26,084 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:02:26,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:26" (1/1) ... [2022-11-25 17:02:26,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:26" (1/1) ... [2022-11-25 17:02:26,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:26" (1/1) ... [2022-11-25 17:02:26,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:26" (1/1) ... [2022-11-25 17:02:26,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:26" (1/1) ... [2022-11-25 17:02:26,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:26" (1/1) ... [2022-11-25 17:02:26,128 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:26" (1/1) ... [2022-11-25 17:02:26,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:26" (1/1) ... [2022-11-25 17:02:26,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:02:26,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:02:26,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:02:26,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:02:26,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:26" (1/1) ... [2022-11-25 17:02:26,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:02:26,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e64ca07-71a6-4f3f-8367-d7c5a40564da/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:02:26,177 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e64ca07-71a6-4f3f-8367-d7c5a40564da/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:02:26,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e64ca07-71a6-4f3f-8367-d7c5a40564da/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:02:26,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:02:26,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:02:26,222 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 17:02:26,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:02:26,222 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2022-11-25 17:02:26,222 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2022-11-25 17:02:26,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:02:26,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:02:26,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:02:26,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 17:02:26,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:02:26,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:02:26,223 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2022-11-25 17:02:26,223 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2022-11-25 17:02:26,225 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:02:26,365 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:02:26,367 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:02:26,699 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:02:26,755 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:02:26,760 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 17:02:26,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:02:26 BoogieIcfgContainer [2022-11-25 17:02:26,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:02:26,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:02:26,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:02:26,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:02:26,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:02:25" (1/3) ... [2022-11-25 17:02:26,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7556abff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:02:26, skipping insertion in model container [2022-11-25 17:02:26,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:26" (2/3) ... [2022-11-25 17:02:26,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7556abff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:02:26, skipping insertion in model container [2022-11-25 17:02:26,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:02:26" (3/3) ... [2022-11-25 17:02:26,779 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2022-11-25 17:02:26,789 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:02:26,800 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:02:26,800 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-25 17:02:26,801 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:02:26,911 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-25 17:02:26,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 118 transitions, 268 flow [2022-11-25 17:02:27,015 INFO L130 PetriNetUnfolder]: 2/114 cut-off events. [2022-11-25 17:02:27,015 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-25 17:02:27,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 114 events. 2/114 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 116 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2022-11-25 17:02:27,024 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 118 transitions, 268 flow [2022-11-25 17:02:27,045 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 100 transitions, 221 flow [2022-11-25 17:02:27,050 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:02:27,066 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 100 transitions, 221 flow [2022-11-25 17:02:27,069 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 111 places, 100 transitions, 221 flow [2022-11-25 17:02:27,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 100 transitions, 221 flow [2022-11-25 17:02:27,129 INFO L130 PetriNetUnfolder]: 2/100 cut-off events. [2022-11-25 17:02:27,142 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 17:02:27,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 100 events. 2/100 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 115 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2022-11-25 17:02:27,147 INFO L119 LiptonReduction]: Number of co-enabled transitions 2918 [2022-11-25 17:02:31,176 INFO L134 LiptonReduction]: Checked pairs total: 9567 [2022-11-25 17:02:31,176 INFO L136 LiptonReduction]: Total number of compositions: 69 [2022-11-25 17:02:31,204 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:02:31,212 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;@2792b0b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:02:31,213 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-11-25 17:02:31,226 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2022-11-25 17:02:31,226 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:02:31,226 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:02:31,228 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:02:31,228 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 17:02:31,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:02:31,236 INFO L85 PathProgramCache]: Analyzing trace with hash 392776469, now seen corresponding path program 1 times [2022-11-25 17:02:31,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:02:31,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423870407] [2022-11-25 17:02:31,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:02:31,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:02:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:02:31,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:02:31,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:02:31,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423870407] [2022-11-25 17:02:31,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423870407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:02:31,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:02:31,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:02:31,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543187896] [2022-11-25 17:02:31,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:02:31,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:02:31,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:02:31,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:02:31,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:02:31,596 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 187 [2022-11-25 17:02:31,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:02:31,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:02:31,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 187 [2022-11-25 17:02:31,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:02:32,972 INFO L130 PetriNetUnfolder]: 5759/9363 cut-off events. [2022-11-25 17:02:32,972 INFO L131 PetriNetUnfolder]: For 869/869 co-relation queries the response was YES. [2022-11-25 17:02:33,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18710 conditions, 9363 events. 5759/9363 cut-off events. For 869/869 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 69856 event pairs, 2676 based on Foata normal form. 0/7755 useless extension candidates. Maximal degree in co-relation 13787. Up to 4954 conditions per place. [2022-11-25 17:02:33,053 INFO L137 encePairwiseOnDemand]: 172/187 looper letters, 47 selfloop transitions, 7 changer transitions 0/62 dead transitions. [2022-11-25 17:02:33,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 268 flow [2022-11-25 17:02:33,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:02:33,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:02:33,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 341 transitions. [2022-11-25 17:02:33,078 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6078431372549019 [2022-11-25 17:02:33,079 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 341 transitions. [2022-11-25 17:02:33,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 341 transitions. [2022-11-25 17:02:33,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:02:33,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 341 transitions. [2022-11-25 17:02:33,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:02:33,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:02:33,112 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:02:33,119 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 103 flow. Second operand 3 states and 341 transitions. [2022-11-25 17:02:33,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 268 flow [2022-11-25 17:02:33,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 62 transitions, 246 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-25 17:02:33,183 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 158 flow [2022-11-25 17:02:33,186 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2022-11-25 17:02:33,190 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2022-11-25 17:02:33,190 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 158 flow [2022-11-25 17:02:33,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:02:33,191 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:02:33,191 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:02:33,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:02:33,192 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 17:02:33,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:02:33,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1569020537, now seen corresponding path program 1 times [2022-11-25 17:02:33,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:02:33,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252141497] [2022-11-25 17:02:33,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:02:33,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:02:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:02:33,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:02:33,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:02:33,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252141497] [2022-11-25 17:02:33,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252141497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:02:33,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:02:33,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:02:33,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176369038] [2022-11-25 17:02:33,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:02:33,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:02:33,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:02:33,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:02:33,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:02:33,348 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 187 [2022-11-25 17:02:33,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:02:33,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:02:33,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 187 [2022-11-25 17:02:33,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:02:34,501 INFO L130 PetriNetUnfolder]: 5335/8970 cut-off events. [2022-11-25 17:02:34,501 INFO L131 PetriNetUnfolder]: For 3617/4072 co-relation queries the response was YES. [2022-11-25 17:02:34,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22377 conditions, 8970 events. 5335/8970 cut-off events. For 3617/4072 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 66921 event pairs, 1564 based on Foata normal form. 235/8284 useless extension candidates. Maximal degree in co-relation 4660. Up to 3219 conditions per place. [2022-11-25 17:02:34,575 INFO L137 encePairwiseOnDemand]: 174/187 looper letters, 56 selfloop transitions, 13 changer transitions 0/77 dead transitions. [2022-11-25 17:02:34,575 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 77 transitions, 377 flow [2022-11-25 17:02:34,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:02:34,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:02:34,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 445 transitions. [2022-11-25 17:02:34,578 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5949197860962567 [2022-11-25 17:02:34,578 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 445 transitions. [2022-11-25 17:02:34,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 445 transitions. [2022-11-25 17:02:34,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:02:34,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 445 transitions. [2022-11-25 17:02:34,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:02:34,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:02:34,584 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:02:34,584 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 158 flow. Second operand 4 states and 445 transitions. [2022-11-25 17:02:34,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 77 transitions, 377 flow [2022-11-25 17:02:34,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 77 transitions, 359 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:02:34,599 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 203 flow [2022-11-25 17:02:34,600 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=203, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2022-11-25 17:02:34,601 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -2 predicate places. [2022-11-25 17:02:34,601 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 203 flow [2022-11-25 17:02:34,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:02:34,601 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:02:34,602 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:02:34,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:02:34,602 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 17:02:34,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:02:34,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1793178883, now seen corresponding path program 1 times [2022-11-25 17:02:34,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:02:34,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526897495] [2022-11-25 17:02:34,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:02:34,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:02:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:02:34,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:02:34,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:02:34,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526897495] [2022-11-25 17:02:34,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526897495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:02:34,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:02:34,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:02:34,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350355383] [2022-11-25 17:02:34,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:02:34,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:02:34,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:02:34,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:02:34,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:02:34,730 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 187 [2022-11-25 17:02:34,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 203 flow. Second operand has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:02:34,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:02:34,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 187 [2022-11-25 17:02:34,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:02:35,363 INFO L130 PetriNetUnfolder]: 2106/4055 cut-off events. [2022-11-25 17:02:35,364 INFO L131 PetriNetUnfolder]: For 3450/3565 co-relation queries the response was YES. [2022-11-25 17:02:35,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10238 conditions, 4055 events. 2106/4055 cut-off events. For 3450/3565 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 30573 event pairs, 510 based on Foata normal form. 651/4664 useless extension candidates. Maximal degree in co-relation 4022. Up to 1341 conditions per place. [2022-11-25 17:02:35,393 INFO L137 encePairwiseOnDemand]: 174/187 looper letters, 58 selfloop transitions, 11 changer transitions 6/83 dead transitions. [2022-11-25 17:02:35,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 83 transitions, 449 flow [2022-11-25 17:02:35,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:02:35,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:02:35,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 451 transitions. [2022-11-25 17:02:35,396 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6029411764705882 [2022-11-25 17:02:35,396 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 451 transitions. [2022-11-25 17:02:35,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 451 transitions. [2022-11-25 17:02:35,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:02:35,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 451 transitions. [2022-11-25 17:02:35,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:02:35,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:02:35,402 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:02:35,402 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 203 flow. Second operand 4 states and 451 transitions. [2022-11-25 17:02:35,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 83 transitions, 449 flow [2022-11-25 17:02:35,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 83 transitions, 431 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:02:35,415 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 224 flow [2022-11-25 17:02:35,415 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=224, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2022-11-25 17:02:35,418 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, 1 predicate places. [2022-11-25 17:02:35,419 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 224 flow [2022-11-25 17:02:35,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:02:35,420 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:02:35,420 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:02:35,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:02:35,420 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 17:02:35,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:02:35,422 INFO L85 PathProgramCache]: Analyzing trace with hash 2054628711, now seen corresponding path program 1 times [2022-11-25 17:02:35,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:02:35,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607098744] [2022-11-25 17:02:35,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:02:35,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:02:35,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:02:35,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:02:35,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:02:35,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607098744] [2022-11-25 17:02:35,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607098744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:02:35,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:02:35,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:02:35,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412891398] [2022-11-25 17:02:35,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:02:35,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:02:35,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:02:35,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:02:35,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:02:35,531 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 187 [2022-11-25 17:02:35,532 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:02:35,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:02:35,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 187 [2022-11-25 17:02:35,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:02:35,920 INFO L130 PetriNetUnfolder]: 1552/3008 cut-off events. [2022-11-25 17:02:35,920 INFO L131 PetriNetUnfolder]: For 4106/4316 co-relation queries the response was YES. [2022-11-25 17:02:35,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8267 conditions, 3008 events. 1552/3008 cut-off events. For 4106/4316 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 21488 event pairs, 1362 based on Foata normal form. 137/3036 useless extension candidates. Maximal degree in co-relation 2297. Up to 2583 conditions per place. [2022-11-25 17:02:35,937 INFO L137 encePairwiseOnDemand]: 184/187 looper letters, 32 selfloop transitions, 1 changer transitions 2/43 dead transitions. [2022-11-25 17:02:35,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 43 transitions, 258 flow [2022-11-25 17:02:35,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:02:35,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:02:35,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2022-11-25 17:02:35,939 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5525846702317291 [2022-11-25 17:02:35,939 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 310 transitions. [2022-11-25 17:02:35,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 310 transitions. [2022-11-25 17:02:35,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:02:35,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 310 transitions. [2022-11-25 17:02:35,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:02:35,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:02:35,943 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:02:35,943 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 224 flow. Second operand 3 states and 310 transitions. [2022-11-25 17:02:35,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 43 transitions, 258 flow [2022-11-25 17:02:35,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 43 transitions, 236 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 17:02:35,949 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 156 flow [2022-11-25 17:02:35,949 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2022-11-25 17:02:35,950 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -2 predicate places. [2022-11-25 17:02:35,950 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 156 flow [2022-11-25 17:02:35,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:02:35,951 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:02:35,951 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:02:35,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:02:35,951 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 17:02:35,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:02:35,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1821015226, now seen corresponding path program 1 times [2022-11-25 17:02:35,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:02:35,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398747500] [2022-11-25 17:02:35,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:02:35,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:02:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:02:36,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:02:36,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:02:36,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398747500] [2022-11-25 17:02:36,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398747500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:02:36,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:02:36,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:02:36,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875954979] [2022-11-25 17:02:36,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:02:36,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:02:36,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:02:36,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:02:36,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:02:36,012 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 187 [2022-11-25 17:02:36,013 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:02:36,013 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:02:36,013 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 187 [2022-11-25 17:02:36,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:02:36,280 INFO L130 PetriNetUnfolder]: 1234/2418 cut-off events. [2022-11-25 17:02:36,280 INFO L131 PetriNetUnfolder]: For 1450/1450 co-relation queries the response was YES. [2022-11-25 17:02:36,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6258 conditions, 2418 events. 1234/2418 cut-off events. For 1450/1450 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 16350 event pairs, 1110 based on Foata normal form. 56/2373 useless extension candidates. Maximal degree in co-relation 6247. Up to 2053 conditions per place. [2022-11-25 17:02:36,294 INFO L137 encePairwiseOnDemand]: 184/187 looper letters, 30 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2022-11-25 17:02:36,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 39 transitions, 206 flow [2022-11-25 17:02:36,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:02:36,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:02:36,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2022-11-25 17:02:36,297 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5490196078431373 [2022-11-25 17:02:36,297 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 308 transitions. [2022-11-25 17:02:36,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 308 transitions. [2022-11-25 17:02:36,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:02:36,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 308 transitions. [2022-11-25 17:02:36,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:02:36,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:02:36,300 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:02:36,301 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 156 flow. Second operand 3 states and 308 transitions. [2022-11-25 17:02:36,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 39 transitions, 206 flow [2022-11-25 17:02:36,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 39 transitions, 205 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:02:36,303 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 145 flow [2022-11-25 17:02:36,304 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2022-11-25 17:02:36,304 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2022-11-25 17:02:36,305 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 145 flow [2022-11-25 17:02:36,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:02:36,305 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:02:36,306 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:02:36,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:02:36,306 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 17:02:36,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:02:36,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1861628069, now seen corresponding path program 1 times [2022-11-25 17:02:36,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:02:36,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174439454] [2022-11-25 17:02:36,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:02:36,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:02:36,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:02:36,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:02:36,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:02:36,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174439454] [2022-11-25 17:02:36,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174439454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:02:36,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:02:36,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:02:36,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997830418] [2022-11-25 17:02:36,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:02:36,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:02:36,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:02:36,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:02:36,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:02:36,454 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 187 [2022-11-25 17:02:36,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 145 flow. Second operand has 5 states, 5 states have (on average 95.8) internal successors, (479), 5 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:02:36,456 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:02:36,456 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 187 [2022-11-25 17:02:36,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:02:36,893 INFO L130 PetriNetUnfolder]: 1314/2937 cut-off events. [2022-11-25 17:02:36,894 INFO L131 PetriNetUnfolder]: For 1409/1409 co-relation queries the response was YES. [2022-11-25 17:02:36,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6970 conditions, 2937 events. 1314/2937 cut-off events. For 1409/1409 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 22941 event pairs, 258 based on Foata normal form. 56/2977 useless extension candidates. Maximal degree in co-relation 6958. Up to 860 conditions per place. [2022-11-25 17:02:36,911 INFO L137 encePairwiseOnDemand]: 178/187 looper letters, 48 selfloop transitions, 7 changer transitions 15/78 dead transitions. [2022-11-25 17:02:36,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 78 transitions, 394 flow [2022-11-25 17:02:36,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:02:36,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:02:36,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 537 transitions. [2022-11-25 17:02:36,914 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.574331550802139 [2022-11-25 17:02:36,914 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 537 transitions. [2022-11-25 17:02:36,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 537 transitions. [2022-11-25 17:02:36,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:02:36,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 537 transitions. [2022-11-25 17:02:36,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.4) internal successors, (537), 5 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) [2022-11-25 17:02:36,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:02:36,921 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:02:36,921 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 145 flow. Second operand 5 states and 537 transitions. [2022-11-25 17:02:36,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 78 transitions, 394 flow [2022-11-25 17:02:36,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 78 transitions, 393 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:02:36,925 INFO L231 Difference]: Finished difference. Result has 55 places, 39 transitions, 170 flow [2022-11-25 17:02:36,925 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=170, PETRI_PLACES=55, PETRI_TRANSITIONS=39} [2022-11-25 17:02:36,926 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, 1 predicate places. [2022-11-25 17:02:36,926 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 39 transitions, 170 flow [2022-11-25 17:02:36,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 95.8) internal successors, (479), 5 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:02:36,927 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:02:36,927 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:02:36,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:02:36,927 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 17:02:36,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:02:36,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1038570959, now seen corresponding path program 2 times [2022-11-25 17:02:36,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:02:36,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53247620] [2022-11-25 17:02:36,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:02:36,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:02:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:02:37,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:02:37,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:02:37,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53247620] [2022-11-25 17:02:37,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53247620] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:02:37,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:02:37,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:02:37,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347109260] [2022-11-25 17:02:37,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:02:37,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:02:37,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:02:37,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:02:37,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:02:37,023 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 187 [2022-11-25 17:02:37,024 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 39 transitions, 170 flow. Second operand has 5 states, 5 states have (on average 95.8) internal successors, (479), 5 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:02:37,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:02:37,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 187 [2022-11-25 17:02:37,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:02:37,301 INFO L130 PetriNetUnfolder]: 792/1844 cut-off events. [2022-11-25 17:02:37,301 INFO L131 PetriNetUnfolder]: For 2227/2227 co-relation queries the response was YES. [2022-11-25 17:02:37,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4825 conditions, 1844 events. 792/1844 cut-off events. For 2227/2227 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 13100 event pairs, 234 based on Foata normal form. 56/1852 useless extension candidates. Maximal degree in co-relation 4811. Up to 820 conditions per place. [2022-11-25 17:02:37,308 INFO L137 encePairwiseOnDemand]: 178/187 looper letters, 0 selfloop transitions, 0 changer transitions 63/63 dead transitions. [2022-11-25 17:02:37,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 63 transitions, 324 flow [2022-11-25 17:02:37,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:02:37,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:02:37,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 522 transitions. [2022-11-25 17:02:37,311 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.558288770053476 [2022-11-25 17:02:37,311 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 522 transitions. [2022-11-25 17:02:37,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 522 transitions. [2022-11-25 17:02:37,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:02:37,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 522 transitions. [2022-11-25 17:02:37,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 104.4) internal successors, (522), 5 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:02:37,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:02:37,316 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:02:37,316 INFO L175 Difference]: Start difference. First operand has 55 places, 39 transitions, 170 flow. Second operand 5 states and 522 transitions. [2022-11-25 17:02:37,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 63 transitions, 324 flow [2022-11-25 17:02:37,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 63 transitions, 299 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-25 17:02:37,320 INFO L231 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2022-11-25 17:02:37,320 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2022-11-25 17:02:37,321 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2022-11-25 17:02:37,321 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2022-11-25 17:02:37,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 95.8) internal successors, (479), 5 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:02:37,324 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2022-11-25 17:02:37,325 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2022-11-25 17:02:37,325 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2022-11-25 17:02:37,326 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2022-11-25 17:02:37,326 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 16 remaining) [2022-11-25 17:02:37,326 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 16 remaining) [2022-11-25 17:02:37,326 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 16 remaining) [2022-11-25 17:02:37,327 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 16 remaining) [2022-11-25 17:02:37,327 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2022-11-25 17:02:37,327 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2022-11-25 17:02:37,327 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2022-11-25 17:02:37,328 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2022-11-25 17:02:37,328 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2022-11-25 17:02:37,328 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2022-11-25 17:02:37,328 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2022-11-25 17:02:37,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2022-11-25 17:02:37,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:02:37,329 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2022-11-25 17:02:37,335 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 17:02:37,335 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:02:37,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:02:37 BasicIcfg [2022-11-25 17:02:37,348 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:02:37,349 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:02:37,349 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:02:37,349 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:02:37,350 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:02:26" (3/4) ... [2022-11-25 17:02:37,353 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 17:02:37,358 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure reader [2022-11-25 17:02:37,359 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure writer [2022-11-25 17:02:37,364 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2022-11-25 17:02:37,364 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 17:02:37,364 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-25 17:02:37,365 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 17:02:37,408 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e64ca07-71a6-4f3f-8367-d7c5a40564da/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 17:02:37,409 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:02:37,409 INFO L158 Benchmark]: Toolchain (without parser) took 11906.78ms. Allocated memory was 155.2MB in the beginning and 398.5MB in the end (delta: 243.3MB). Free memory was 122.9MB in the beginning and 234.2MB in the end (delta: -111.3MB). Peak memory consumption was 134.9MB. Max. memory is 16.1GB. [2022-11-25 17:02:37,410 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 155.2MB. Free memory is still 97.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:02:37,410 INFO L158 Benchmark]: CACSL2BoogieTranslator took 527.60ms. Allocated memory is still 155.2MB. Free memory was 122.9MB in the beginning and 101.7MB in the end (delta: 21.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-25 17:02:37,410 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.45ms. Allocated memory is still 155.2MB. Free memory was 101.7MB in the beginning and 99.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:02:37,411 INFO L158 Benchmark]: Boogie Preprocessor took 47.76ms. Allocated memory is still 155.2MB. Free memory was 99.0MB in the beginning and 97.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:02:37,411 INFO L158 Benchmark]: RCFGBuilder took 631.35ms. Allocated memory is still 155.2MB. Free memory was 97.7MB in the beginning and 79.5MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-25 17:02:37,411 INFO L158 Benchmark]: TraceAbstraction took 10578.61ms. Allocated memory was 155.2MB in the beginning and 398.5MB in the end (delta: 243.3MB). Free memory was 78.6MB in the beginning and 236.3MB in the end (delta: -157.7MB). Peak memory consumption was 250.3MB. Max. memory is 16.1GB. [2022-11-25 17:02:37,412 INFO L158 Benchmark]: Witness Printer took 60.01ms. Allocated memory is still 398.5MB. Free memory was 236.3MB in the beginning and 234.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:02:37,413 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 155.2MB. Free memory is still 97.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 527.60ms. Allocated memory is still 155.2MB. Free memory was 122.9MB in the beginning and 101.7MB in the end (delta: 21.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.45ms. Allocated memory is still 155.2MB. Free memory was 101.7MB in the beginning and 99.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.76ms. Allocated memory is still 155.2MB. Free memory was 99.0MB in the beginning and 97.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 631.35ms. Allocated memory is still 155.2MB. Free memory was 97.7MB in the beginning and 79.5MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 10578.61ms. Allocated memory was 155.2MB in the beginning and 398.5MB in the end (delta: 243.3MB). Free memory was 78.6MB in the beginning and 236.3MB in the end (delta: -157.7MB). Peak memory consumption was 250.3MB. Max. memory is 16.1GB. * Witness Printer took 60.01ms. Allocated memory is still 398.5MB. Free memory was 236.3MB in the beginning and 234.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.1s, 111 PlacesBefore, 54 PlacesAfterwards, 100 TransitionsBefore, 41 TransitionsAfterwards, 2918 CoEnabledTransitionPairs, 6 FixpointIterations, 22 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 69 TotalNumberOfCompositions, 9567 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4664, independent: 4420, independent conditional: 0, independent unconditional: 4420, dependent: 244, dependent conditional: 0, dependent unconditional: 244, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1901, independent: 1853, independent conditional: 0, independent unconditional: 1853, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1901, independent: 1805, independent conditional: 0, independent unconditional: 1805, dependent: 96, dependent conditional: 0, dependent unconditional: 96, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 96, independent: 48, independent conditional: 0, independent unconditional: 48, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 277, independent: 138, independent conditional: 0, independent unconditional: 138, dependent: 139, dependent conditional: 0, dependent unconditional: 139, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4664, independent: 2567, independent conditional: 0, independent unconditional: 2567, dependent: 196, dependent conditional: 0, dependent unconditional: 196, unknown: 1901, unknown conditional: 0, unknown unconditional: 1901] , Statistics on independence cache: Total cache size (in pairs): 429, Positive cache size: 401, Positive conditional cache size: 0, Positive unconditional cache size: 401, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 711]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 711]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 714]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 714]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 145 locations, 16 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: 10.4s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 234 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 227 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 73 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 594 IncrementalHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 73 mSolverCounterUnsat, 5 mSDtfsCounter, 594 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=224occurred in iteration=3, InterpolantAutomatonStates: 27, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 216 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 17:02:37,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e64ca07-71a6-4f3f-8367-d7c5a40564da/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE