./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 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_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/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_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 306d85d0b5300749928a8392783cd7ec5acf0c4622b6bdba80c3589786dd98ad --- 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 21:31:21,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:31:21,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:31:21,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:31:21,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:31:21,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:31:21,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:31:21,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:31:21,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:31:21,208 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:31:21,209 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:31:21,211 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:31:21,211 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:31:21,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:31:21,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:31:21,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:31:21,217 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:31:21,218 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:31:21,221 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:31:21,224 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:31:21,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:31:21,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:31:21,229 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:31:21,230 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:31:21,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:31:21,237 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:31:21,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:31:21,239 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:31:21,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:31:21,241 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:31:21,241 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:31:21,242 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:31:21,243 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:31:21,244 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:31:21,245 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:31:21,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:31:21,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:31:21,246 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:31:21,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:31:21,247 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:31:21,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:31:21,248 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 21:31:21,261 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:31:21,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:31:21,262 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:31:21,262 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:31:21,262 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:31:21,262 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:31:21,263 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:31:21,263 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:31:21,263 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:31:21,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:31:21,263 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:31:21,263 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 21:31:21,263 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:31:21,263 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:31:21,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:31:21,263 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 21:31:21,264 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 21:31:21,264 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 21:31:21,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:31:21,264 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 21:31:21,264 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:31:21,264 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:31:21,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:31:21,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:31:21,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:31:21,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:31:21,264 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:31:21,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:31:21,265 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:31:21,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:31:21,265 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:31:21,265 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:31:21,265 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:31:21,265 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:31:21,265 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_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 306d85d0b5300749928a8392783cd7ec5acf0c4622b6bdba80c3589786dd98ad [2022-12-13 21:31:21,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:31:21,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:31:21,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:31:21,468 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:31:21,468 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:31:21,470 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2022-12-13 21:31:24,103 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:31:24,230 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:31:24,230 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2022-12-13 21:31:24,237 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/data/2bf680954/cea014fe712d4bd2847844297ca7ece6/FLAGf87632ed4 [2022-12-13 21:31:24,249 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/data/2bf680954/cea014fe712d4bd2847844297ca7ece6 [2022-12-13 21:31:24,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:31:24,252 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:31:24,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:31:24,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:31:24,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:31:24,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:31:24" (1/1) ... [2022-12-13 21:31:24,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@608ee1ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:31:24, skipping insertion in model container [2022-12-13 21:31:24,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:31:24" (1/1) ... [2022-12-13 21:31:24,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:31:24,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:31:24,437 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:31:24,438 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:31:24,439 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:31:24,440 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:31:24,440 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:31:24,441 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:31:24,447 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_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c[2823,2836] [2022-12-13 21:31:24,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:31:24,463 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-12-13 21:31:24,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1ec2142b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:31:24, skipping insertion in model container [2022-12-13 21:31:24,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:31:24,464 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-13 21:31:24,465 INFO L158 Benchmark]: Toolchain (without parser) took 211.98ms. Allocated memory is still 207.6MB. Free memory was 169.5MB in the beginning and 176.0MB in the end (delta: -6.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-12-13 21:31:24,465 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 111.1MB. Free memory was 80.7MB in the beginning and 80.6MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:31:24,466 INFO L158 Benchmark]: CACSL2BoogieTranslator took 210.39ms. Allocated memory is still 207.6MB. Free memory was 169.5MB in the beginning and 176.0MB in the end (delta: -6.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-12-13 21:31:24,466 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 111.1MB. Free memory was 80.7MB in the beginning and 80.6MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 210.39ms. Allocated memory is still 207.6MB. Free memory was 169.5MB in the beginning and 176.0MB in the end (delta: -6.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 123]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/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_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 306d85d0b5300749928a8392783cd7ec5acf0c4622b6bdba80c3589786dd98ad --- 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 21:31:25,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:31:25,874 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:31:25,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:31:25,898 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:31:25,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:31:25,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:31:25,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:31:25,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:31:25,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:31:25,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:31:25,911 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:31:25,912 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:31:25,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:31:25,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:31:25,917 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:31:25,918 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:31:25,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:31:25,922 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:31:25,925 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:31:25,927 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:31:25,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:31:25,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:31:25,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:31:25,939 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:31:25,939 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:31:25,940 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:31:25,941 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:31:25,942 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:31:25,943 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:31:25,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:31:25,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:31:25,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:31:25,946 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:31:25,951 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:31:25,951 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:31:25,952 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:31:25,952 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:31:25,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:31:25,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:31:25,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:31:25,954 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-12-13 21:31:25,977 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:31:25,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:31:25,977 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:31:25,977 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:31:25,978 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:31:25,978 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:31:25,979 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:31:25,979 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:31:25,979 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:31:25,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:31:25,980 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:31:25,980 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 21:31:25,980 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:31:25,980 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:31:25,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:31:25,981 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 21:31:25,981 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 21:31:25,981 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 21:31:25,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:31:25,981 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 21:31:25,982 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 21:31:25,982 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 21:31:25,982 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:31:25,982 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:31:25,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:31:25,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:31:25,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:31:25,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:31:25,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:31:25,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:31:25,984 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 21:31:25,984 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 21:31:25,984 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:31:25,984 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:31:25,984 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:31:25,984 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 21:31:25,985 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:31:25,985 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_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 306d85d0b5300749928a8392783cd7ec5acf0c4622b6bdba80c3589786dd98ad [2022-12-13 21:31:26,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:31:26,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:31:26,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:31:26,247 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:31:26,248 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:31:26,249 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2022-12-13 21:31:28,880 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:31:29,049 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:31:29,050 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2022-12-13 21:31:29,055 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/data/e11878a3e/6bbe0173a25a41c68652020576da353f/FLAGe1b41b08c [2022-12-13 21:31:29,066 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/data/e11878a3e/6bbe0173a25a41c68652020576da353f [2022-12-13 21:31:29,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:31:29,069 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:31:29,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:31:29,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:31:29,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:31:29,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:31:29" (1/1) ... [2022-12-13 21:31:29,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@603a0234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:31:29, skipping insertion in model container [2022-12-13 21:31:29,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:31:29" (1/1) ... [2022-12-13 21:31:29,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:31:29,093 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:31:29,210 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:31:29,211 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:31:29,212 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:31:29,213 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:31:29,213 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:31:29,214 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:31:29,221 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_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c[2823,2836] [2022-12-13 21:31:29,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:31:29,239 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-13 21:31:29,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:31:29,247 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:31:29,248 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:31:29,249 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:31:29,250 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:31:29,250 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:31:29,251 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:31:29,255 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_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c[2823,2836] [2022-12-13 21:31:29,258 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:31:29,262 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:31:29,274 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:31:29,275 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:31:29,275 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:31:29,276 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:31:29,276 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:31:29,277 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:31:29,281 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_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c[2823,2836] [2022-12-13 21:31:29,284 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:31:29,305 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:31:29,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:31:29 WrapperNode [2022-12-13 21:31:29,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:31:29,307 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:31:29,307 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:31:29,307 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:31:29,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:31:29" (1/1) ... [2022-12-13 21:31:29,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:31:29" (1/1) ... [2022-12-13 21:31:29,347 INFO L138 Inliner]: procedures = 28, calls = 57, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 225 [2022-12-13 21:31:29,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:31:29,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:31:29,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:31:29,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:31:29,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:31:29" (1/1) ... [2022-12-13 21:31:29,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:31:29" (1/1) ... [2022-12-13 21:31:29,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:31:29" (1/1) ... [2022-12-13 21:31:29,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:31:29" (1/1) ... [2022-12-13 21:31:29,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:31:29" (1/1) ... [2022-12-13 21:31:29,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:31:29" (1/1) ... [2022-12-13 21:31:29,371 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:31:29" (1/1) ... [2022-12-13 21:31:29,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:31:29" (1/1) ... [2022-12-13 21:31:29,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:31:29,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:31:29,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:31:29,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:31:29,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:31:29" (1/1) ... [2022-12-13 21:31:29,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:31:29,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:31:29,398 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:31:29,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:31:29,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:31:29,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 21:31:29,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 21:31:29,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-13 21:31:29,433 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 21:31:29,433 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 21:31:29,433 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 21:31:29,433 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 21:31:29,433 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 21:31:29,433 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 21:31:29,434 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 21:31:29,434 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 21:31:29,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 21:31:29,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:31:29,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:31:29,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:31:29,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-13 21:31:29,436 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 21:31:29,538 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:31:29,540 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:31:30,201 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:31:30,296 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:31:30,297 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-13 21:31:30,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:31:30 BoogieIcfgContainer [2022-12-13 21:31:30,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:31:30,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:31:30,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:31:30,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:31:30,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:31:29" (1/3) ... [2022-12-13 21:31:30,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3443143b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:31:30, skipping insertion in model container [2022-12-13 21:31:30,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:31:29" (2/3) ... [2022-12-13 21:31:30,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3443143b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:31:30, skipping insertion in model container [2022-12-13 21:31:30,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:31:30" (3/3) ... [2022-12-13 21:31:30,306 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-max.wvr.c [2022-12-13 21:31:30,319 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:31:30,319 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2022-12-13 21:31:30,320 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 21:31:30,422 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 21:31:30,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 340 places, 357 transitions, 738 flow [2022-12-13 21:31:30,538 INFO L130 PetriNetUnfolder]: 27/354 cut-off events. [2022-12-13 21:31:30,538 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 21:31:30,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 354 events. 27/354 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 424 event pairs, 0 based on Foata normal form. 0/281 useless extension candidates. Maximal degree in co-relation 274. Up to 3 conditions per place. [2022-12-13 21:31:30,543 INFO L82 GeneralOperation]: Start removeDead. Operand has 340 places, 357 transitions, 738 flow [2022-12-13 21:31:30,548 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 332 places, 349 transitions, 716 flow [2022-12-13 21:31:30,551 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:31:30,558 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 332 places, 349 transitions, 716 flow [2022-12-13 21:31:30,560 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 332 places, 349 transitions, 716 flow [2022-12-13 21:31:30,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 332 places, 349 transitions, 716 flow [2022-12-13 21:31:30,605 INFO L130 PetriNetUnfolder]: 27/349 cut-off events. [2022-12-13 21:31:30,605 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 21:31:30,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 349 events. 27/349 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 425 event pairs, 0 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 274. Up to 3 conditions per place. [2022-12-13 21:31:30,608 INFO L119 LiptonReduction]: Number of co-enabled transitions 5194 [2022-12-13 21:32:25,568 INFO L134 LiptonReduction]: Checked pairs total: 8790 [2022-12-13 21:32:25,568 INFO L136 LiptonReduction]: Total number of compositions: 413 [2022-12-13 21:32:25,579 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:32:25,583 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@6ccb0b14, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:32:25,583 INFO L358 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2022-12-13 21:32:25,585 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 21:32:25,585 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:32:25,585 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:32:25,585 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 21:32:25,586 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2022-12-13 21:32:25,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:32:25,589 INFO L85 PathProgramCache]: Analyzing trace with hash 45878, now seen corresponding path program 1 times [2022-12-13 21:32:25,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:32:25,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1951568930] [2022-12-13 21:32:25,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:32:25,598 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:32:25,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:32:25,599 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:32:25,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-13 21:32:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:32:25,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 21:32:25,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:32:25,793 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-12-13 21:32:25,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-12-13 21:32:25,822 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 21:32:25,822 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:32:25,822 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:32:25,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1951568930] [2022-12-13 21:32:25,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1951568930] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:32:25,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:32:25,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:32:25,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589353130] [2022-12-13 21:32:25,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:32:25,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:32:25,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:32:25,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:32:25,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:32:26,053 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 770 [2022-12-13 21:32:26,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 80 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 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 21:32:26,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:32:26,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 770 [2022-12-13 21:32:26,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:32:27,895 INFO L130 PetriNetUnfolder]: 10033/12338 cut-off events. [2022-12-13 21:32:27,895 INFO L131 PetriNetUnfolder]: For 89/89 co-relation queries the response was YES. [2022-12-13 21:32:27,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24831 conditions, 12338 events. 10033/12338 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 1110. Compared 54076 event pairs, 4645 based on Foata normal form. 0/3338 useless extension candidates. Maximal degree in co-relation 22597. Up to 12265 conditions per place. [2022-12-13 21:32:27,964 INFO L137 encePairwiseOnDemand]: 755/770 looper letters, 60 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2022-12-13 21:32:27,964 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 66 transitions, 272 flow [2022-12-13 21:32:27,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:32:27,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:32:27,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1002 transitions. [2022-12-13 21:32:27,978 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43376623376623374 [2022-12-13 21:32:27,978 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1002 transitions. [2022-12-13 21:32:27,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1002 transitions. [2022-12-13 21:32:27,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:32:27,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1002 transitions. [2022-12-13 21:32:27,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 334.0) internal successors, (1002), 3 states have internal predecessors, (1002), 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 21:32:27,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 770.0) internal successors, (3080), 4 states have internal predecessors, (3080), 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 21:32:27,994 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 770.0) internal successors, (3080), 4 states have internal predecessors, (3080), 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 21:32:27,996 INFO L175 Difference]: Start difference. First operand has 81 places, 80 transitions, 178 flow. Second operand 3 states and 1002 transitions. [2022-12-13 21:32:27,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 66 transitions, 272 flow [2022-12-13 21:32:28,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 66 transitions, 260 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-13 21:32:28,004 INFO L231 Difference]: Finished difference. Result has 63 places, 66 transitions, 140 flow [2022-12-13 21:32:28,006 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=770, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=63, PETRI_TRANSITIONS=66} [2022-12-13 21:32:28,008 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, -18 predicate places. [2022-12-13 21:32:28,009 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 66 transitions, 140 flow [2022-12-13 21:32:28,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 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 21:32:28,009 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:32:28,009 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 21:32:28,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-13 21:32:28,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:32:28,211 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2022-12-13 21:32:28,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:32:28,212 INFO L85 PathProgramCache]: Analyzing trace with hash 45879, now seen corresponding path program 1 times [2022-12-13 21:32:28,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:32:28,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1668541178] [2022-12-13 21:32:28,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:32:28,213 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:32:28,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:32:28,215 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:32:28,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-13 21:32:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:32:28,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 21:32:28,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:32:28,427 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-12-13 21:32:28,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-12-13 21:32:28,467 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 21:32:28,467 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:32:28,468 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:32:28,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1668541178] [2022-12-13 21:32:28,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1668541178] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:32:28,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:32:28,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:32:28,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795366435] [2022-12-13 21:32:28,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:32:28,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:32:28,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:32:28,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:32:28,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:32:28,807 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 770 [2022-12-13 21:32:28,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 66 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 303.6666666666667) internal successors, (911), 3 states have internal predecessors, (911), 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 21:32:28,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:32:28,809 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 770 [2022-12-13 21:32:28,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:32:30,270 INFO L130 PetriNetUnfolder]: 10033/12339 cut-off events. [2022-12-13 21:32:30,270 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-12-13 21:32:30,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24690 conditions, 12339 events. 10033/12339 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 1110. Compared 54112 event pairs, 4645 based on Foata normal form. 0/3339 useless extension candidates. Maximal degree in co-relation 24684. Up to 12266 conditions per place. [2022-12-13 21:32:30,322 INFO L137 encePairwiseOnDemand]: 766/770 looper letters, 60 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2022-12-13 21:32:30,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 67 transitions, 266 flow [2022-12-13 21:32:30,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:32:30,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:32:30,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 973 transitions. [2022-12-13 21:32:30,327 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2022-12-13 21:32:30,327 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 973 transitions. [2022-12-13 21:32:30,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 973 transitions. [2022-12-13 21:32:30,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:32:30,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 973 transitions. [2022-12-13 21:32:30,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 324.3333333333333) internal successors, (973), 3 states have internal predecessors, (973), 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 21:32:30,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 770.0) internal successors, (3080), 4 states have internal predecessors, (3080), 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 21:32:30,335 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 770.0) internal successors, (3080), 4 states have internal predecessors, (3080), 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 21:32:30,335 INFO L175 Difference]: Start difference. First operand has 63 places, 66 transitions, 140 flow. Second operand 3 states and 973 transitions. [2022-12-13 21:32:30,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 67 transitions, 266 flow [2022-12-13 21:32:30,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 67 transitions, 265 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:32:30,337 INFO L231 Difference]: Finished difference. Result has 65 places, 67 transitions, 153 flow [2022-12-13 21:32:30,338 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=770, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=65, PETRI_TRANSITIONS=67} [2022-12-13 21:32:30,338 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, -16 predicate places. [2022-12-13 21:32:30,338 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 67 transitions, 153 flow [2022-12-13 21:32:30,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 303.6666666666667) internal successors, (911), 3 states have internal predecessors, (911), 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 21:32:30,339 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:32:30,339 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 21:32:30,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-12-13 21:32:30,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:32:30,540 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2022-12-13 21:32:30,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:32:30,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1429905, now seen corresponding path program 1 times [2022-12-13 21:32:30,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:32:30,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1549860549] [2022-12-13 21:32:30,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:32:30,542 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:32:30,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:32:30,543 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:32:30,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-13 21:32:30,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:32:30,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 21:32:30,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:32:30,703 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-12-13 21:32:30,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-12-13 21:32:30,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:32:30,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:32:31,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:32:31,002 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:32:31,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1549860549] [2022-12-13 21:32:31,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1549860549] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:32:31,002 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:32:31,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-12-13 21:32:31,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049001855] [2022-12-13 21:32:31,002 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:32:31,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:32:31,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:32:31,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:32:31,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:32:32,531 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 770 [2022-12-13 21:32:32,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 67 transitions, 153 flow. Second operand has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 21:32:32,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:32:32,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 770 [2022-12-13 21:32:32,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:32:34,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:32:36,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:32:37,697 INFO L130 PetriNetUnfolder]: 10052/12365 cut-off events. [2022-12-13 21:32:37,697 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-12-13 21:32:37,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24755 conditions, 12365 events. 10052/12365 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 1110. Compared 54248 event pairs, 4645 based on Foata normal form. 0/3346 useless extension candidates. Maximal degree in co-relation 24747. Up to 12278 conditions per place. [2022-12-13 21:32:37,737 INFO L137 encePairwiseOnDemand]: 754/770 looper letters, 60 selfloop transitions, 28 changer transitions 0/93 dead transitions. [2022-12-13 21:32:37,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 93 transitions, 393 flow [2022-12-13 21:32:37,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:32:37,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 21:32:37,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1859 transitions. [2022-12-13 21:32:37,742 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4023809523809524 [2022-12-13 21:32:37,742 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1859 transitions. [2022-12-13 21:32:37,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1859 transitions. [2022-12-13 21:32:37,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:32:37,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1859 transitions. [2022-12-13 21:32:37,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 309.8333333333333) internal successors, (1859), 6 states have internal predecessors, (1859), 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 21:32:37,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 770.0) internal successors, (5390), 7 states have internal predecessors, (5390), 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 21:32:37,752 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 770.0) internal successors, (5390), 7 states have internal predecessors, (5390), 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 21:32:37,753 INFO L175 Difference]: Start difference. First operand has 65 places, 67 transitions, 153 flow. Second operand 6 states and 1859 transitions. [2022-12-13 21:32:37,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 93 transitions, 393 flow [2022-12-13 21:32:37,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 93 transitions, 389 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 21:32:37,754 INFO L231 Difference]: Finished difference. Result has 72 places, 93 transitions, 348 flow [2022-12-13 21:32:37,755 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=770, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=348, PETRI_PLACES=72, PETRI_TRANSITIONS=93} [2022-12-13 21:32:37,755 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, -9 predicate places. [2022-12-13 21:32:37,755 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 93 transitions, 348 flow [2022-12-13 21:32:37,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 21:32:37,756 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:32:37,756 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 21:32:37,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-13 21:32:37,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:32:37,957 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2022-12-13 21:32:37,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:32:37,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1374489036, now seen corresponding path program 1 times [2022-12-13 21:32:37,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:32:37,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [263076141] [2022-12-13 21:32:37,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:32:37,958 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:32:37,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:32:37,959 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:32:37,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-13 21:32:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:32:38,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 21:32:38,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:32:38,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:32:38,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:32:38,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:32:38,169 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:32:38,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [263076141] [2022-12-13 21:32:38,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [263076141] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:32:38,170 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:32:38,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-12-13 21:32:38,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113427263] [2022-12-13 21:32:38,170 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:32:38,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:32:38,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:32:38,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:32:38,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:32:38,492 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 770 [2022-12-13 21:32:38,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 93 transitions, 348 flow. Second operand has 8 states, 8 states have (on average 305.125) internal successors, (2441), 8 states have internal predecessors, (2441), 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 21:32:38,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:32:38,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 770 [2022-12-13 21:32:38,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:32:42,927 INFO L130 PetriNetUnfolder]: 29856/36779 cut-off events. [2022-12-13 21:32:42,927 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-12-13 21:32:42,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73704 conditions, 36779 events. 29856/36779 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 3060. Compared 183494 event pairs, 13873 based on Foata normal form. 4/10048 useless extension candidates. Maximal degree in co-relation 73692. Up to 12261 conditions per place. [2022-12-13 21:32:43,067 INFO L137 encePairwiseOnDemand]: 754/770 looper letters, 160 selfloop transitions, 56 changer transitions 0/221 dead transitions. [2022-12-13 21:32:43,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 221 transitions, 1174 flow [2022-12-13 21:32:43,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 21:32:43,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 21:32:43,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3262 transitions. [2022-12-13 21:32:43,075 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42363636363636364 [2022-12-13 21:32:43,075 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3262 transitions. [2022-12-13 21:32:43,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3262 transitions. [2022-12-13 21:32:43,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:32:43,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3262 transitions. [2022-12-13 21:32:43,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 326.2) internal successors, (3262), 10 states have internal predecessors, (3262), 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 21:32:43,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 770.0) internal successors, (8470), 11 states have internal predecessors, (8470), 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 21:32:43,116 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 770.0) internal successors, (8470), 11 states have internal predecessors, (8470), 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 21:32:43,116 INFO L175 Difference]: Start difference. First operand has 72 places, 93 transitions, 348 flow. Second operand 10 states and 3262 transitions. [2022-12-13 21:32:43,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 221 transitions, 1174 flow [2022-12-13 21:32:43,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 221 transitions, 1158 flow, removed 7 selfloop flow, removed 1 redundant places. [2022-12-13 21:32:43,122 INFO L231 Difference]: Finished difference. Result has 83 places, 131 transitions, 752 flow [2022-12-13 21:32:43,123 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=770, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=752, PETRI_PLACES=83, PETRI_TRANSITIONS=131} [2022-12-13 21:32:43,123 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 2 predicate places. [2022-12-13 21:32:43,124 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 131 transitions, 752 flow [2022-12-13 21:32:43,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 305.125) internal successors, (2441), 8 states have internal predecessors, (2441), 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 21:32:43,125 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:32:43,125 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 21:32:43,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-13 21:32:43,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:32:43,327 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2022-12-13 21:32:43,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:32:43,328 INFO L85 PathProgramCache]: Analyzing trace with hash -343770697, now seen corresponding path program 2 times [2022-12-13 21:32:43,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:32:43,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [763129217] [2022-12-13 21:32:43,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:32:43,331 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:32:43,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:32:43,335 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:32:43,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-13 21:32:43,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 21:32:43,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:32:43,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 21:32:43,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:32:43,591 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-12-13 21:32:43,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-12-13 21:32:43,773 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:32:43,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:32:44,423 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:32:44,424 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:32:44,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [763129217] [2022-12-13 21:32:44,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [763129217] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:32:44,424 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:32:44,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-12-13 21:32:44,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104289164] [2022-12-13 21:32:44,424 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:32:44,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 21:32:44,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:32:44,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 21:32:44,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:32:52,936 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 770 [2022-12-13 21:32:52,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 131 transitions, 752 flow. Second operand has 12 states, 12 states have (on average 295.0) internal successors, (3540), 12 states have internal predecessors, (3540), 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 21:32:52,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:32:52,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 770 [2022-12-13 21:32:52,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:32:54,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:32:56,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:32:58,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:33:00,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:33:02,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:33:04,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:33:06,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:33:08,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:33:10,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:33:12,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:33:23,910 INFO L130 PetriNetUnfolder]: 49775/61304 cut-off events. [2022-12-13 21:33:23,910 INFO L131 PetriNetUnfolder]: For 109/109 co-relation queries the response was YES. [2022-12-13 21:33:24,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122912 conditions, 61304 events. 49775/61304 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 4236. Compared 320374 event pairs, 23132 based on Foata normal form. 6/16733 useless extension candidates. Maximal degree in co-relation 122896. Up to 24515 conditions per place. [2022-12-13 21:33:24,192 INFO L137 encePairwiseOnDemand]: 756/770 looper letters, 172 selfloop transitions, 59 changer transitions 0/236 dead transitions. [2022-12-13 21:33:24,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 236 transitions, 1517 flow [2022-12-13 21:33:24,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 21:33:24,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-13 21:33:24,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4609 transitions. [2022-12-13 21:33:24,203 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39904761904761904 [2022-12-13 21:33:24,203 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4609 transitions. [2022-12-13 21:33:24,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4609 transitions. [2022-12-13 21:33:24,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:33:24,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4609 transitions. [2022-12-13 21:33:24,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 307.26666666666665) internal successors, (4609), 15 states have internal predecessors, (4609), 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 21:33:24,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 770.0) internal successors, (12320), 16 states have internal predecessors, (12320), 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 21:33:24,223 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 770.0) internal successors, (12320), 16 states have internal predecessors, (12320), 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 21:33:24,223 INFO L175 Difference]: Start difference. First operand has 83 places, 131 transitions, 752 flow. Second operand 15 states and 4609 transitions. [2022-12-13 21:33:24,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 236 transitions, 1517 flow [2022-12-13 21:33:24,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 236 transitions, 1488 flow, removed 13 selfloop flow, removed 1 redundant places. [2022-12-13 21:33:24,228 INFO L231 Difference]: Finished difference. Result has 103 places, 145 transitions, 1031 flow [2022-12-13 21:33:24,228 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=770, PETRI_DIFFERENCE_MINUEND_FLOW=727, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1031, PETRI_PLACES=103, PETRI_TRANSITIONS=145} [2022-12-13 21:33:24,228 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 22 predicate places. [2022-12-13 21:33:24,228 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 145 transitions, 1031 flow [2022-12-13 21:33:24,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 295.0) internal successors, (3540), 12 states have internal predecessors, (3540), 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 21:33:24,230 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:33:24,230 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 21:33:24,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-13 21:33:24,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:33:24,431 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2022-12-13 21:33:24,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:33:24,432 INFO L85 PathProgramCache]: Analyzing trace with hash -340590039, now seen corresponding path program 1 times [2022-12-13 21:33:24,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:33:24,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90000476] [2022-12-13 21:33:24,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:33:24,434 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:33:24,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:33:24,437 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:33:24,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-13 21:33:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:33:24,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 21:33:24,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:33:24,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-13 21:33:24,804 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:33:24,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:33:25,177 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:33:25,177 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:33:25,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [90000476] [2022-12-13 21:33:25,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [90000476] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:33:25,177 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:33:25,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-12-13 21:33:25,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801878983] [2022-12-13 21:33:25,178 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:33:25,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 21:33:25,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:33:25,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 21:33:25,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-12-13 21:33:31,771 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 770 [2022-12-13 21:33:31,773 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 145 transitions, 1031 flow. Second operand has 11 states, 11 states have (on average 290.09090909090907) internal successors, (3191), 11 states have internal predecessors, (3191), 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 21:33:31,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:33:31,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 770 [2022-12-13 21:33:31,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:33:33,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:33:50,909 INFO L130 PetriNetUnfolder]: 109016/134348 cut-off events. [2022-12-13 21:33:50,909 INFO L131 PetriNetUnfolder]: For 174/174 co-relation queries the response was YES. [2022-12-13 21:33:51,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269240 conditions, 134348 events. 109016/134348 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 9045. Compared 758558 event pairs, 50785 based on Foata normal form. 4/36742 useless extension candidates. Maximal degree in co-relation 269216. Up to 36355 conditions per place. [2022-12-13 21:33:51,721 INFO L137 encePairwiseOnDemand]: 754/770 looper letters, 335 selfloop transitions, 80 changer transitions 0/420 dead transitions. [2022-12-13 21:33:51,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 420 transitions, 2792 flow [2022-12-13 21:33:51,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 21:33:51,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 21:33:51,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 4103 transitions. [2022-12-13 21:33:51,729 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4098901098901099 [2022-12-13 21:33:51,729 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 4103 transitions. [2022-12-13 21:33:51,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 4103 transitions. [2022-12-13 21:33:51,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:33:51,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 4103 transitions. [2022-12-13 21:33:51,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 315.61538461538464) internal successors, (4103), 13 states have internal predecessors, (4103), 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 21:33:51,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 770.0) internal successors, (10780), 14 states have internal predecessors, (10780), 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 21:33:51,745 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 770.0) internal successors, (10780), 14 states have internal predecessors, (10780), 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 21:33:51,745 INFO L175 Difference]: Start difference. First operand has 103 places, 145 transitions, 1031 flow. Second operand 13 states and 4103 transitions. [2022-12-13 21:33:51,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 420 transitions, 2792 flow [2022-12-13 21:33:51,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 420 transitions, 2733 flow, removed 27 selfloop flow, removed 2 redundant places. [2022-12-13 21:33:51,752 INFO L231 Difference]: Finished difference. Result has 114 places, 174 transitions, 1395 flow [2022-12-13 21:33:51,752 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=770, PETRI_DIFFERENCE_MINUEND_FLOW=972, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1395, PETRI_PLACES=114, PETRI_TRANSITIONS=174} [2022-12-13 21:33:51,753 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 33 predicate places. [2022-12-13 21:33:51,753 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 174 transitions, 1395 flow [2022-12-13 21:33:51,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 290.09090909090907) internal successors, (3191), 11 states have internal predecessors, (3191), 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 21:33:51,754 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:33:51,754 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2022-12-13 21:33:51,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-13 21:33:51,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:33:51,955 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2022-12-13 21:33:51,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:33:51,957 INFO L85 PathProgramCache]: Analyzing trace with hash -2063768701, now seen corresponding path program 2 times [2022-12-13 21:33:51,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:33:51,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [559264085] [2022-12-13 21:33:51,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:33:51,959 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:33:51,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:33:51,962 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:33:51,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-13 21:33:52,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 21:33:52,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:33:52,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 21:33:52,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:33:52,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-13 21:33:52,161 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 21:33:52,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:33:52,561 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 21:33:52,561 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:33:52,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [559264085] [2022-12-13 21:33:52,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [559264085] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:33:52,561 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:33:52,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-12-13 21:33:52,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30723921] [2022-12-13 21:33:52,561 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:33:52,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 21:33:52,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:33:52,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 21:33:52,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-13 21:33:57,320 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 770 [2022-12-13 21:33:57,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 174 transitions, 1395 flow. Second operand has 10 states, 10 states have (on average 293.2) internal successors, (2932), 10 states have internal predecessors, (2932), 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 21:33:57,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:33:57,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 770 [2022-12-13 21:33:57,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:33:59,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:34:00,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:34:02,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:34:03,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:34:05,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:34:06,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:34:22,016 INFO L130 PetriNetUnfolder]: 109418/134751 cut-off events. [2022-12-13 21:34:22,016 INFO L131 PetriNetUnfolder]: For 291/291 co-relation queries the response was YES. [2022-12-13 21:34:22,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270111 conditions, 134751 events. 109418/134751 cut-off events. For 291/291 co-relation queries the response was YES. Maximal size of possible extension queue 7545. Compared 751863 event pairs, 50878 based on Foata normal form. 14/36756 useless extension candidates. Maximal degree in co-relation 270085. Up to 49033 conditions per place. [2022-12-13 21:34:22,906 INFO L137 encePairwiseOnDemand]: 755/770 looper letters, 305 selfloop transitions, 60 changer transitions 0/370 dead transitions. [2022-12-13 21:34:22,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 370 transitions, 2668 flow [2022-12-13 21:34:22,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 21:34:22,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 21:34:22,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2948 transitions. [2022-12-13 21:34:22,913 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4253968253968254 [2022-12-13 21:34:22,913 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2948 transitions. [2022-12-13 21:34:22,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2948 transitions. [2022-12-13 21:34:22,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:34:22,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2948 transitions. [2022-12-13 21:34:22,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 327.55555555555554) internal successors, (2948), 9 states have internal predecessors, (2948), 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 21:34:22,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 770.0) internal successors, (7700), 10 states have internal predecessors, (7700), 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 21:34:22,923 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 770.0) internal successors, (7700), 10 states have internal predecessors, (7700), 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 21:34:22,923 INFO L175 Difference]: Start difference. First operand has 114 places, 174 transitions, 1395 flow. Second operand 9 states and 2948 transitions. [2022-12-13 21:34:22,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 370 transitions, 2668 flow [2022-12-13 21:34:22,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 370 transitions, 2340 flow, removed 24 selfloop flow, removed 7 redundant places. [2022-12-13 21:34:22,931 INFO L231 Difference]: Finished difference. Result has 119 places, 169 transitions, 1282 flow [2022-12-13 21:34:22,931 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=770, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1282, PETRI_PLACES=119, PETRI_TRANSITIONS=169} [2022-12-13 21:34:22,931 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 38 predicate places. [2022-12-13 21:34:22,931 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 169 transitions, 1282 flow [2022-12-13 21:34:22,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 293.2) internal successors, (2932), 10 states have internal predecessors, (2932), 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 21:34:22,933 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:34:22,933 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:34:22,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-12-13 21:34:23,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:34:23,135 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2022-12-13 21:34:23,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:34:23,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1968270713, now seen corresponding path program 1 times [2022-12-13 21:34:23,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:34:23,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [417327427] [2022-12-13 21:34:23,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:34:23,138 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:34:23,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:34:23,141 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:34:23,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-13 21:34:23,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:34:23,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 21:34:23,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:34:23,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 21:34:23,328 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-13 21:34:23,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-12-13 21:34:23,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 21:34:23,340 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:34:23,340 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:34:23,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [417327427] [2022-12-13 21:34:23,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [417327427] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:34:23,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:34:23,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:34:23,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792991743] [2022-12-13 21:34:23,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:34:23,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:34:23,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:34:23,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:34:23,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:34:23,551 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 770 [2022-12-13 21:34:23,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 169 transitions, 1282 flow. Second operand has 4 states, 4 states have (on average 300.75) internal successors, (1203), 4 states have internal predecessors, (1203), 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 21:34:23,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:34:23,552 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 770 [2022-12-13 21:34:23,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:34:35,274 INFO L130 PetriNetUnfolder]: 97683/120266 cut-off events. [2022-12-13 21:34:35,275 INFO L131 PetriNetUnfolder]: For 261/261 co-relation queries the response was YES. [2022-12-13 21:34:35,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241134 conditions, 120266 events. 97683/120266 cut-off events. For 261/261 co-relation queries the response was YES. Maximal size of possible extension queue 6826. Compared 664904 event pairs, 45188 based on Foata normal form. 0/33328 useless extension candidates. Maximal degree in co-relation 241106. Up to 119526 conditions per place. [2022-12-13 21:34:36,104 INFO L137 encePairwiseOnDemand]: 765/770 looper letters, 144 selfloop transitions, 11 changer transitions 0/159 dead transitions. [2022-12-13 21:34:36,104 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 159 transitions, 1524 flow [2022-12-13 21:34:36,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:34:36,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:34:36,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1258 transitions. [2022-12-13 21:34:36,108 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40844155844155844 [2022-12-13 21:34:36,108 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1258 transitions. [2022-12-13 21:34:36,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1258 transitions. [2022-12-13 21:34:36,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:34:36,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1258 transitions. [2022-12-13 21:34:36,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 314.5) internal successors, (1258), 4 states have internal predecessors, (1258), 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 21:34:36,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 770.0) internal successors, (3850), 5 states have internal predecessors, (3850), 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 21:34:36,113 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 770.0) internal successors, (3850), 5 states have internal predecessors, (3850), 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 21:34:36,113 INFO L175 Difference]: Start difference. First operand has 119 places, 169 transitions, 1282 flow. Second operand 4 states and 1258 transitions. [2022-12-13 21:34:36,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 159 transitions, 1524 flow [2022-12-13 21:34:36,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 159 transitions, 1464 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-12-13 21:34:36,119 INFO L231 Difference]: Finished difference. Result has 115 places, 159 transitions, 1176 flow [2022-12-13 21:34:36,119 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=770, PETRI_DIFFERENCE_MINUEND_FLOW=1154, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1176, PETRI_PLACES=115, PETRI_TRANSITIONS=159} [2022-12-13 21:34:36,119 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 34 predicate places. [2022-12-13 21:34:36,120 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 159 transitions, 1176 flow [2022-12-13 21:34:36,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 300.75) internal successors, (1203), 4 states have internal predecessors, (1203), 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 21:34:36,120 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:34:36,120 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:34:36,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-13 21:34:36,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:34:36,321 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2022-12-13 21:34:36,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:34:36,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1968270669, now seen corresponding path program 1 times [2022-12-13 21:34:36,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:34:36,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160468284] [2022-12-13 21:34:36,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:34:36,322 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:34:36,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:34:36,323 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:34:36,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e1c65f8-da91-46b4-b8c5-e7289cf34c86/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-12-13 21:34:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:34:36,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 21:34:36,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:34:36,552 INFO L321 Elim1Store]: treesize reduction 103, result has 24.8 percent of original size [2022-12-13 21:34:36,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 59 [2022-12-13 21:34:36,897 INFO L321 Elim1Store]: treesize reduction 48, result has 68.6 percent of original size [2022-12-13 21:34:36,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 163 [2022-12-13 21:34:49,959 INFO L321 Elim1Store]: treesize reduction 96, result has 79.4 percent of original size [2022-12-13 21:34:49,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 157 treesize of output 500