./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/spaghetti.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e6ee6f-84c5-43a3-90cc-3d6c61787c66/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e6ee6f-84c5-43a3-90cc-3d6c61787c66/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e6ee6f-84c5-43a3-90cc-3d6c61787c66/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e6ee6f-84c5-43a3-90cc-3d6c61787c66/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/spaghetti.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e6ee6f-84c5-43a3-90cc-3d6c61787c66/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e6ee6f-84c5-43a3-90cc-3d6c61787c66/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7e50ae1d6af13c623583d6a2f949e9597ecd4d402771d52399b9fc659c58a3d1 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 11:26:38,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:26:38,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:26:39,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:26:39,015 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:26:39,016 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:26:39,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:26:39,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:26:39,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:26:39,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:26:39,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:26:39,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:26:39,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:26:39,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:26:39,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:26:39,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:26:39,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:26:39,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:26:39,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:26:39,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:26:39,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:26:39,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:26:39,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:26:39,035 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:26:39,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:26:39,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:26:39,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:26:39,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:26:39,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:26:39,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:26:39,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:26:39,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:26:39,042 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:26:39,043 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:26:39,043 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:26:39,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:26:39,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:26:39,044 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:26:39,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:26:39,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:26:39,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:26:39,046 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e6ee6f-84c5-43a3-90cc-3d6c61787c66/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 11:26:39,065 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:26:39,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:26:39,065 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:26:39,066 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:26:39,066 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:26:39,066 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:26:39,067 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:26:39,067 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:26:39,067 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:26:39,068 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:26:39,068 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:26:39,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:26:39,068 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:26:39,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:26:39,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:26:39,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:26:39,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:26:39,069 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:26:39,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:26:39,069 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:26:39,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:26:39,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:26:39,070 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:26:39,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:26:39,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:26:39,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:26:39,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:26:39,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:26:39,071 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:26:39,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:26:39,071 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:26:39,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 11:26:39,071 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:26:39,072 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:26:39,072 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:26:39,072 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_95e6ee6f-84c5-43a3-90cc-3d6c61787c66/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e6ee6f-84c5-43a3-90cc-3d6c61787c66/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e50ae1d6af13c623583d6a2f949e9597ecd4d402771d52399b9fc659c58a3d1 [2022-12-13 11:26:39,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:26:39,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:26:39,287 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:26:39,287 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:26:39,288 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:26:39,289 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e6ee6f-84c5-43a3-90cc-3d6c61787c66/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/spaghetti.wvr.c [2022-12-13 11:26:41,789 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:26:41,969 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:26:41,969 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e6ee6f-84c5-43a3-90cc-3d6c61787c66/sv-benchmarks/c/weaver/spaghetti.wvr.c [2022-12-13 11:26:41,975 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e6ee6f-84c5-43a3-90cc-3d6c61787c66/bin/uautomizer-uyxdKDjOR8/data/f16c7d1c7/48efd00727454d51895e1a674e94480e/FLAGe1c9981c5 [2022-12-13 11:26:41,987 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e6ee6f-84c5-43a3-90cc-3d6c61787c66/bin/uautomizer-uyxdKDjOR8/data/f16c7d1c7/48efd00727454d51895e1a674e94480e [2022-12-13 11:26:41,989 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:26:41,990 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:26:41,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:26:41,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:26:41,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:26:41,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:26:41" (1/1) ... [2022-12-13 11:26:41,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2757bf8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:26:41, skipping insertion in model container [2022-12-13 11:26:41,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:26:41" (1/1) ... [2022-12-13 11:26:42,001 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:26:42,020 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:26:42,154 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:26:42,155 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:26:42,155 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:26:42,156 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:26:42,156 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:26:42,156 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:26:42,158 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:26:42,158 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:26:42,159 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:26:42,160 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:26:42,160 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:26:42,160 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:26:42,161 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:26:42,161 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:26:42,161 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:26:42,162 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:26:42,162 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:26:42,162 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:26:42,163 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:26:42,163 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:26:42,163 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:26:42,163 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:26:42,164 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:26:42,165 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:26:42,165 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:26:42,165 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:26:42,165 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:26:42,166 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:26:42,171 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_95e6ee6f-84c5-43a3-90cc-3d6c61787c66/sv-benchmarks/c/weaver/spaghetti.wvr.c[3221,3234] [2022-12-13 11:26:42,175 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:26:42,181 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:26:42,190 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:26:42,191 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:26:42,191 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:26:42,191 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:26:42,191 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:26:42,192 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:26:42,192 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:26:42,192 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:26:42,192 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:26:42,193 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:26:42,193 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:26:42,193 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:26:42,194 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:26:42,194 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:26:42,195 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:26:42,195 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:26:42,195 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:26:42,196 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:26:42,196 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:26:42,196 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:26:42,196 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:26:42,197 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:26:42,197 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:26:42,197 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:26:42,197 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:26:42,198 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:26:42,198 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:26:42,198 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:26:42,202 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_95e6ee6f-84c5-43a3-90cc-3d6c61787c66/sv-benchmarks/c/weaver/spaghetti.wvr.c[3221,3234] [2022-12-13 11:26:42,203 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:26:42,213 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:26:42,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:26:42 WrapperNode [2022-12-13 11:26:42,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:26:42,214 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:26:42,214 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:26:42,214 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:26:42,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:26:42" (1/1) ... [2022-12-13 11:26:42,224 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:26:42" (1/1) ... [2022-12-13 11:26:42,238 INFO L138 Inliner]: procedures = 23, calls = 59, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 78 [2022-12-13 11:26:42,238 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:26:42,239 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:26:42,239 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:26:42,239 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:26:42,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:26:42" (1/1) ... [2022-12-13 11:26:42,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:26:42" (1/1) ... [2022-12-13 11:26:42,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:26:42" (1/1) ... [2022-12-13 11:26:42,248 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:26:42" (1/1) ... [2022-12-13 11:26:42,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:26:42" (1/1) ... [2022-12-13 11:26:42,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:26:42" (1/1) ... [2022-12-13 11:26:42,255 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:26:42" (1/1) ... [2022-12-13 11:26:42,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:26:42" (1/1) ... [2022-12-13 11:26:42,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:26:42,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:26:42,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:26:42,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:26:42,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:26:42" (1/1) ... [2022-12-13 11:26:42,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:26:42,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e6ee6f-84c5-43a3-90cc-3d6c61787c66/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:26:42,280 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e6ee6f-84c5-43a3-90cc-3d6c61787c66/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:26:42,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e6ee6f-84c5-43a3-90cc-3d6c61787c66/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:26:42,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:26:42,314 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 11:26:42,314 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 11:26:42,315 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 11:26:42,315 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 11:26:42,315 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 11:26:42,315 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 11:26:42,315 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-13 11:26:42,315 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-13 11:26:42,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:26:42,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 11:26:42,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 11:26:42,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 11:26:42,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 11:26:42,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:26:42,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:26:42,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 11:26:42,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 11:26:42,317 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 11:26:42,405 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:26:42,407 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:26:42,583 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:26:42,598 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:26:42,599 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 11:26:42,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:26:42 BoogieIcfgContainer [2022-12-13 11:26:42,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:26:42,604 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:26:42,604 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:26:42,607 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:26:42,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:26:41" (1/3) ... [2022-12-13 11:26:42,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f3cbc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:26:42, skipping insertion in model container [2022-12-13 11:26:42,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:26:42" (2/3) ... [2022-12-13 11:26:42,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f3cbc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:26:42, skipping insertion in model container [2022-12-13 11:26:42,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:26:42" (3/3) ... [2022-12-13 11:26:42,609 INFO L112 eAbstractionObserver]: Analyzing ICFG spaghetti.wvr.c [2022-12-13 11:26:42,617 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 11:26:42,626 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:26:42,626 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 11:26:42,626 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 11:26:42,685 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 11:26:42,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 126 transitions, 284 flow [2022-12-13 11:26:42,758 INFO L130 PetriNetUnfolder]: 9/122 cut-off events. [2022-12-13 11:26:42,758 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 11:26:42,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 122 events. 9/122 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 112 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 81. Up to 2 conditions per place. [2022-12-13 11:26:42,764 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 126 transitions, 284 flow [2022-12-13 11:26:42,767 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 109 transitions, 242 flow [2022-12-13 11:26:42,770 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:26:42,778 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 109 transitions, 242 flow [2022-12-13 11:26:42,780 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 109 transitions, 242 flow [2022-12-13 11:26:42,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 109 transitions, 242 flow [2022-12-13 11:26:42,804 INFO L130 PetriNetUnfolder]: 9/109 cut-off events. [2022-12-13 11:26:42,804 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 11:26:42,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 109 events. 9/109 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 111 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 81. Up to 2 conditions per place. [2022-12-13 11:26:42,806 INFO L119 LiptonReduction]: Number of co-enabled transitions 2714 [2022-12-13 11:26:44,972 INFO L134 LiptonReduction]: Checked pairs total: 4729 [2022-12-13 11:26:44,972 INFO L136 LiptonReduction]: Total number of compositions: 91 [2022-12-13 11:26:44,983 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:26:44,987 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;@174c9ffb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:26:44,987 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-13 11:26:44,992 INFO L130 PetriNetUnfolder]: 4/30 cut-off events. [2022-12-13 11:26:44,993 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 11:26:44,993 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:26:44,993 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:26:44,994 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 11:26:44,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:26:44,997 INFO L85 PathProgramCache]: Analyzing trace with hash 712240868, now seen corresponding path program 1 times [2022-12-13 11:26:45,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:26:45,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781955649] [2022-12-13 11:26:45,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:26:45,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:26:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:26:45,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:26:45,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:26:45,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781955649] [2022-12-13 11:26:45,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781955649] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:26:45,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:26:45,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:26:45,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308519049] [2022-12-13 11:26:45,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:26:45,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:26:45,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:26:45,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:26:45,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:26:45,452 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 217 [2022-12-13 11:26:45,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:26:45,454 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:26:45,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 217 [2022-12-13 11:26:45,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:26:45,689 INFO L130 PetriNetUnfolder]: 1514/2243 cut-off events. [2022-12-13 11:26:45,689 INFO L131 PetriNetUnfolder]: For 200/200 co-relation queries the response was YES. [2022-12-13 11:26:45,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4648 conditions, 2243 events. 1514/2243 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 10257 event pairs, 559 based on Foata normal form. 1/1582 useless extension candidates. Maximal degree in co-relation 3726. Up to 911 conditions per place. [2022-12-13 11:26:45,709 INFO L137 encePairwiseOnDemand]: 208/217 looper letters, 53 selfloop transitions, 10 changer transitions 1/68 dead transitions. [2022-12-13 11:26:45,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 68 transitions, 312 flow [2022-12-13 11:26:45,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:26:45,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:26:45,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 465 transitions. [2022-12-13 11:26:45,725 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2022-12-13 11:26:45,725 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 465 transitions. [2022-12-13 11:26:45,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 465 transitions. [2022-12-13 11:26:45,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:26:45,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 465 transitions. [2022-12-13 11:26:45,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 116.25) internal successors, (465), 4 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:26:45,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:26:45,738 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:26:45,739 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 86 flow. Second operand 4 states and 465 transitions. [2022-12-13 11:26:45,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 68 transitions, 312 flow [2022-12-13 11:26:45,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 68 transitions, 280 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-12-13 11:26:45,747 INFO L231 Difference]: Finished difference. Result has 38 places, 41 transitions, 148 flow [2022-12-13 11:26:45,748 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=38, PETRI_TRANSITIONS=41} [2022-12-13 11:26:45,751 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2022-12-13 11:26:45,751 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 41 transitions, 148 flow [2022-12-13 11:26:45,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:26:45,752 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:26:45,752 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:26:45,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:26:45,752 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 11:26:45,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:26:45,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1431682150, now seen corresponding path program 2 times [2022-12-13 11:26:45,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:26:45,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760280965] [2022-12-13 11:26:45,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:26:45,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:26:45,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:26:45,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:26:45,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:26:45,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760280965] [2022-12-13 11:26:45,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760280965] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:26:45,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:26:45,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:26:45,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511871495] [2022-12-13 11:26:45,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:26:45,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:26:45,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:26:45,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:26:45,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:26:45,920 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 217 [2022-12-13 11:26:45,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 41 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:26:45,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:26:45,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 217 [2022-12-13 11:26:45,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:26:46,151 INFO L130 PetriNetUnfolder]: 1767/2636 cut-off events. [2022-12-13 11:26:46,152 INFO L131 PetriNetUnfolder]: For 1941/1958 co-relation queries the response was YES. [2022-12-13 11:26:46,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7269 conditions, 2636 events. 1767/2636 cut-off events. For 1941/1958 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 12432 event pairs, 669 based on Foata normal form. 1/2615 useless extension candidates. Maximal degree in co-relation 2219. Up to 1321 conditions per place. [2022-12-13 11:26:46,160 INFO L137 encePairwiseOnDemand]: 208/217 looper letters, 0 selfloop transitions, 0 changer transitions 85/85 dead transitions. [2022-12-13 11:26:46,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 85 transitions, 472 flow [2022-12-13 11:26:46,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:26:46,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:26:46,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 464 transitions. [2022-12-13 11:26:46,162 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5345622119815668 [2022-12-13 11:26:46,162 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 464 transitions. [2022-12-13 11:26:46,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 464 transitions. [2022-12-13 11:26:46,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:26:46,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 464 transitions. [2022-12-13 11:26:46,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:26:46,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:26:46,166 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:26:46,166 INFO L175 Difference]: Start difference. First operand has 38 places, 41 transitions, 148 flow. Second operand 4 states and 464 transitions. [2022-12-13 11:26:46,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 85 transitions, 472 flow [2022-12-13 11:26:46,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 85 transitions, 472 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 11:26:46,168 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2022-12-13 11:26:46,168 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2022-12-13 11:26:46,168 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2022-12-13 11:26:46,168 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2022-12-13 11:26:46,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:26:46,171 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-12-13 11:26:46,171 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2022-12-13 11:26:46,171 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-12-13 11:26:46,171 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-12-13 11:26:46,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-12-13 11:26:46,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 11:26:46,172 INFO L445 BasicCegarLoop]: Path program histogram: [2] [2022-12-13 11:26:46,175 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 11:26:46,175 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 11:26:46,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 11:26:46 BasicIcfg [2022-12-13 11:26:46,179 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 11:26:46,179 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 11:26:46,179 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 11:26:46,179 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 11:26:46,180 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:26:42" (3/4) ... [2022-12-13 11:26:46,182 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 11:26:46,186 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 11:26:46,186 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 11:26:46,186 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-12-13 11:26:46,186 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2022-12-13 11:26:46,189 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2022-12-13 11:26:46,189 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 11:26:46,189 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 11:26:46,189 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 11:26:46,213 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e6ee6f-84c5-43a3-90cc-3d6c61787c66/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 11:26:46,213 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 11:26:46,214 INFO L158 Benchmark]: Toolchain (without parser) took 4223.51ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 115.4MB in the beginning and 67.1MB in the end (delta: 48.3MB). Peak memory consumption was 80.8MB. Max. memory is 16.1GB. [2022-12-13 11:26:46,214 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 146.8MB. Free memory was 118.2MB in the beginning and 118.0MB in the end (delta: 193.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 11:26:46,214 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.80ms. Allocated memory is still 146.8MB. Free memory was 114.9MB in the beginning and 100.8MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 11:26:46,215 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.75ms. Allocated memory is still 146.8MB. Free memory was 100.8MB in the beginning and 99.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 11:26:46,215 INFO L158 Benchmark]: Boogie Preprocessor took 18.57ms. Allocated memory is still 146.8MB. Free memory was 99.3MB in the beginning and 97.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 11:26:46,215 INFO L158 Benchmark]: RCFGBuilder took 343.43ms. Allocated memory is still 146.8MB. Free memory was 97.7MB in the beginning and 83.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 11:26:46,216 INFO L158 Benchmark]: TraceAbstraction took 3575.02ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 82.0MB in the beginning and 69.2MB in the end (delta: 12.8MB). Peak memory consumption was 72.4MB. Max. memory is 16.1GB. [2022-12-13 11:26:46,216 INFO L158 Benchmark]: Witness Printer took 34.20ms. Allocated memory is still 176.2MB. Free memory was 69.2MB in the beginning and 67.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 11:26:46,217 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 146.8MB. Free memory was 118.2MB in the beginning and 118.0MB in the end (delta: 193.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 221.80ms. Allocated memory is still 146.8MB. Free memory was 114.9MB in the beginning and 100.8MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.75ms. Allocated memory is still 146.8MB. Free memory was 100.8MB in the beginning and 99.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.57ms. Allocated memory is still 146.8MB. Free memory was 99.3MB in the beginning and 97.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 343.43ms. Allocated memory is still 146.8MB. Free memory was 97.7MB in the beginning and 83.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 3575.02ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 82.0MB in the beginning and 69.2MB in the end (delta: 12.8MB). Peak memory consumption was 72.4MB. Max. memory is 16.1GB. * Witness Printer took 34.20ms. Allocated memory is still 176.2MB. Free memory was 69.2MB in the beginning and 67.1MB 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: 2.2s, 113 PlacesBefore, 40 PlacesAfterwards, 109 TransitionsBefore, 31 TransitionsAfterwards, 2714 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 9 ConcurrentYvCompositions, 5 ChoiceCompositions, 91 TotalNumberOfCompositions, 4729 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2692, independent: 2588, independent conditional: 0, independent unconditional: 2588, dependent: 104, dependent conditional: 0, dependent unconditional: 104, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1516, independent: 1484, independent conditional: 0, independent unconditional: 1484, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2692, independent: 1104, independent conditional: 0, independent unconditional: 1104, dependent: 72, dependent conditional: 0, dependent unconditional: 72, unknown: 1516, unknown conditional: 0, unknown unconditional: 1516] , Statistics on independence cache: Total cache size (in pairs): 122, Positive cache size: 109, Positive conditional cache size: 0, Positive unconditional cache size: 109, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 127]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 160 locations, 5 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: 3.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 97 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 56 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 53 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 267 IncrementalHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 53 mSolverCounterUnsat, 6 mSDtfsCounter, 267 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=148occurred in iteration=1, InterpolantAutomatonStates: 8, 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, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 126 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 11:26:46,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e6ee6f-84c5-43a3-90cc-3d6c61787c66/bin/uautomizer-uyxdKDjOR8/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