./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i --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_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 11:59:04,916 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:59:04,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:59:04,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:59:04,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:59:04,933 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:59:04,933 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:59:04,934 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:59:04,935 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:59:04,936 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:59:04,937 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:59:04,938 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:59:04,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:59:04,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:59:04,939 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:59:04,940 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:59:04,941 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:59:04,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:59:04,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:59:04,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:59:04,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:59:04,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:59:04,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:59:04,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:59:04,952 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:59:04,952 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:59:04,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:59:04,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:59:04,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:59:04,954 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:59:04,954 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:59:04,955 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:59:04,955 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:59:04,956 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:59:04,957 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:59:04,957 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:59:04,957 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:59:04,958 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:59:04,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:59:04,958 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:59:04,959 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:59:04,960 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 11:59:04,975 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:59:04,976 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:59:04,976 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:59:04,976 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:59:04,976 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:59:04,976 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:59:04,977 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:59:04,977 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:59:04,977 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:59:04,977 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:59:04,977 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:59:04,978 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 11:59:04,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:59:04,978 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:59:04,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:59:04,978 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 11:59:04,978 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 11:59:04,978 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 11:59:04,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:59:04,978 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 11:59:04,979 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:59:04,979 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:59:04,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:59:04,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:59:04,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:59:04,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:59:04,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:59:04,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:59:04,980 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:59:04,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:59:04,980 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:59:04,980 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:59:04,980 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:59:04,980 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:59:04,980 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_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 [2022-12-13 11:59:05,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:59:05,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:59:05,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:59:05,163 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:59:05,164 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:59:05,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2022-12-13 11:59:07,718 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:59:07,931 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:59:07,931 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2022-12-13 11:59:07,943 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/data/794982f83/cc8bdaeb0adf4e7582a02c9bd15ea7eb/FLAGf0bcc4f58 [2022-12-13 11:59:07,953 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/data/794982f83/cc8bdaeb0adf4e7582a02c9bd15ea7eb [2022-12-13 11:59:07,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:59:07,956 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:59:07,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:59:07,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:59:07,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:59:07,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:59:07" (1/1) ... [2022-12-13 11:59:07,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ade904d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:59:07, skipping insertion in model container [2022-12-13 11:59:07,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:59:07" (1/1) ... [2022-12-13 11:59:07,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:59:08,006 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:59:08,484 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_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i[76084,76097] [2022-12-13 11:59:08,514 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:59:08,523 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 11:59:08,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@258a368f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:59:08, skipping insertion in model container [2022-12-13 11:59:08,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:59:08,523 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-13 11:59:08,525 INFO L158 Benchmark]: Toolchain (without parser) took 567.71ms. Allocated memory is still 117.4MB. Free memory was 83.3MB in the beginning and 64.8MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 11:59:08,525 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 117.4MB. Free memory is still 59.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 11:59:08,525 INFO L158 Benchmark]: CACSL2BoogieTranslator took 566.11ms. Allocated memory is still 117.4MB. Free memory was 83.3MB in the beginning and 64.8MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 11:59:08,526 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 117.4MB. Free memory is still 59.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 566.11ms. Allocated memory is still 117.4MB. Free memory was 83.3MB in the beginning and 64.8MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1709]: 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_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 11:59:09,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:59:09,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:59:09,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:59:09,901 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:59:09,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:59:09,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:59:09,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:59:09,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:59:09,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:59:09,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:59:09,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:59:09,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:59:09,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:59:09,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:59:09,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:59:09,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:59:09,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:59:09,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:59:09,912 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:59:09,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:59:09,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:59:09,915 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:59:09,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:59:09,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:59:09,918 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:59:09,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:59:09,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:59:09,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:59:09,919 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:59:09,920 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:59:09,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:59:09,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:59:09,927 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:59:09,928 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:59:09,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:59:09,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:59:09,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:59:09,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:59:09,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:59:09,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:59:09,932 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-12-13 11:59:09,946 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:59:09,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:59:09,946 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:59:09,946 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:59:09,947 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:59:09,947 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:59:09,947 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:59:09,947 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:59:09,947 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:59:09,947 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:59:09,947 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:59:09,948 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 11:59:09,948 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:59:09,948 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:59:09,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:59:09,948 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 11:59:09,948 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 11:59:09,948 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 11:59:09,948 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:59:09,948 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 11:59:09,948 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 11:59:09,948 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 11:59:09,949 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:59:09,949 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:59:09,949 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:59:09,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:59:09,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:59:09,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:59:09,949 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:59:09,949 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:59:09,949 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 11:59:09,949 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 11:59:09,950 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:59:09,950 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:59:09,950 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:59:09,950 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 11:59:09,950 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:59:09,950 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_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 [2022-12-13 11:59:10,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:59:10,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:59:10,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:59:10,197 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:59:10,198 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:59:10,199 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2022-12-13 11:59:12,791 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:59:13,033 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:59:13,033 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2022-12-13 11:59:13,051 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/data/85e8989e7/5a2cacff9f8f48ce9c286c177199b124/FLAGa9ce54186 [2022-12-13 11:59:13,066 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/data/85e8989e7/5a2cacff9f8f48ce9c286c177199b124 [2022-12-13 11:59:13,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:59:13,070 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:59:13,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:59:13,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:59:13,075 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:59:13,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:59:13" (1/1) ... [2022-12-13 11:59:13,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46fa5f07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:59:13, skipping insertion in model container [2022-12-13 11:59:13,076 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:59:13" (1/1) ... [2022-12-13 11:59:13,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:59:13,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:59:13,616 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_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i[76084,76097] [2022-12-13 11:59:13,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:59:13,653 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-13 11:59:13,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:59:13,679 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_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i[76084,76097] [2022-12-13 11:59:13,688 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:59:13,691 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:59:13,724 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_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i[76084,76097] [2022-12-13 11:59:13,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:59:13,824 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:59:13,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:59:13 WrapperNode [2022-12-13 11:59:13,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:59:13,825 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:59:13,825 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:59:13,825 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:59:13,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:59:13" (1/1) ... [2022-12-13 11:59:13,850 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:59:13" (1/1) ... [2022-12-13 11:59:13,869 INFO L138 Inliner]: procedures = 486, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 132 [2022-12-13 11:59:13,869 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:59:13,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:59:13,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:59:13,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:59:13,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:59:13" (1/1) ... [2022-12-13 11:59:13,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:59:13" (1/1) ... [2022-12-13 11:59:13,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:59:13" (1/1) ... [2022-12-13 11:59:13,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:59:13" (1/1) ... [2022-12-13 11:59:13,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:59:13" (1/1) ... [2022-12-13 11:59:13,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:59:13" (1/1) ... [2022-12-13 11:59:13,898 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:59:13" (1/1) ... [2022-12-13 11:59:13,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:59:13" (1/1) ... [2022-12-13 11:59:13,903 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:59:13,904 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:59:13,904 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:59:13,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:59:13,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:59:13" (1/1) ... [2022-12-13 11:59:13,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:59:13,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:59:13,930 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:59:13,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:59:13,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 11:59:13,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 11:59:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-12-13 11:59:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 11:59:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:59:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 11:59:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:59:13,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:59:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-13 11:59:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2022-12-13 11:59:13,958 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2022-12-13 11:59:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 11:59:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-13 11:59:13,959 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 11:59:14,212 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:59:14,214 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:59:14,625 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:59:14,633 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:59:14,633 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 11:59:14,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:59:14 BoogieIcfgContainer [2022-12-13 11:59:14,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:59:14,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:59:14,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:59:14,641 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:59:14,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:59:13" (1/3) ... [2022-12-13 11:59:14,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d97e4f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:59:14, skipping insertion in model container [2022-12-13 11:59:14,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:59:13" (2/3) ... [2022-12-13 11:59:14,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d97e4f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:59:14, skipping insertion in model container [2022-12-13 11:59:14,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:59:14" (3/3) ... [2022-12-13 11:59:14,644 INFO L112 eAbstractionObserver]: Analyzing ICFG race-3_1-container_of-global.i [2022-12-13 11:59:14,662 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:59:14,662 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 45 error locations. [2022-12-13 11:59:14,662 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 11:59:14,739 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 11:59:14,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 238 places, 240 transitions, 496 flow [2022-12-13 11:59:14,868 INFO L130 PetriNetUnfolder]: 10/297 cut-off events. [2022-12-13 11:59:14,868 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 11:59:14,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 297 events. 10/297 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 704 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 171. Up to 4 conditions per place. [2022-12-13 11:59:14,874 INFO L82 GeneralOperation]: Start removeDead. Operand has 238 places, 240 transitions, 496 flow [2022-12-13 11:59:14,880 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 236 places, 238 transitions, 488 flow [2022-12-13 11:59:14,884 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:59:14,893 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 236 places, 238 transitions, 488 flow [2022-12-13 11:59:14,895 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 236 places, 238 transitions, 488 flow [2022-12-13 11:59:14,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 238 transitions, 488 flow [2022-12-13 11:59:14,942 INFO L130 PetriNetUnfolder]: 10/297 cut-off events. [2022-12-13 11:59:14,942 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 11:59:14,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 297 events. 10/297 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 704 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 171. Up to 4 conditions per place. [2022-12-13 11:59:14,945 INFO L119 LiptonReduction]: Number of co-enabled transitions 6080 [2022-12-13 12:00:20,866 WARN L233 SmtUtils]: Spent 6.47s on a formula simplification. DAG size of input: 162 DAG size of output: 158 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 12:00:30,166 WARN L233 SmtUtils]: Spent 6.59s on a formula simplification. DAG size of input: 159 DAG size of output: 157 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 12:00:42,225 WARN L233 SmtUtils]: Spent 8.90s on a formula simplification. DAG size of input: 174 DAG size of output: 170 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 12:01:49,433 WARN L233 SmtUtils]: Spent 1.06m on a formula simplification. DAG size of input: 202 DAG size of output: 200 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 12:02:17,877 WARN L233 SmtUtils]: Spent 28.44s on a formula simplification that was a NOOP. DAG size: 189 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 12:03:33,588 WARN L233 SmtUtils]: Spent 1.26m on a formula simplification. DAG size of input: 217 DAG size of output: 213 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 12:04:03,925 WARN L233 SmtUtils]: Spent 30.33s on a formula simplification that was a NOOP. DAG size: 190 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 12:04:10,441 WARN L233 SmtUtils]: Spent 6.23s on a formula simplification. DAG size of input: 154 DAG size of output: 152 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 12:04:21,220 WARN L233 SmtUtils]: Spent 7.82s on a formula simplification. DAG size of input: 169 DAG size of output: 165 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 12:04:51,723 WARN L233 SmtUtils]: Spent 26.80s on a formula simplification. DAG size of input: 241 DAG size of output: 233 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 12:05:03,486 WARN L233 SmtUtils]: Spent 11.76s on a formula simplification that was a NOOP. DAG size: 227 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 12:05:31,034 WARN L233 SmtUtils]: Spent 27.55s on a formula simplification. DAG size of input: 242 DAG size of output: 234 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 12:05:43,487 WARN L233 SmtUtils]: Spent 12.45s on a formula simplification that was a NOOP. DAG size: 228 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 12:07:49,764 WARN L233 SmtUtils]: Spent 2.10m on a formula simplification. DAG size of input: 281 DAG size of output: 266 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 12:08:49,396 WARN L233 SmtUtils]: Spent 59.63s on a formula simplification that was a NOOP. DAG size: 256 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 12:10:56,085 WARN L233 SmtUtils]: Spent 2.11m on a formula simplification. DAG size of input: 282 DAG size of output: 267 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 12:11:57,473 WARN L233 SmtUtils]: Spent 1.02m on a formula simplification that was a NOOP. DAG size: 257 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 12:11:58,038 INFO L134 LiptonReduction]: Checked pairs total: 25858 [2022-12-13 12:11:58,039 INFO L136 LiptonReduction]: Total number of compositions: 276 [2022-12-13 12:11:58,049 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:11:58,052 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;@13d6721a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:11:58,052 INFO L358 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2022-12-13 12:11:58,053 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-12-13 12:11:58,053 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:11:58,053 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:11:58,053 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 12:11:58,054 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 12:11:58,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:11:58,057 INFO L85 PathProgramCache]: Analyzing trace with hash 834, now seen corresponding path program 1 times [2022-12-13 12:11:58,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:11:58,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1241190536] [2022-12-13 12:11:58,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:11:58,067 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 12:11:58,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:11:58,068 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:11:58,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:11:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:11:58,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 12:11:58,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:11:58,156 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 12:11:58,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:11:58,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:11:58,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1241190536] [2022-12-13 12:11:58,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1241190536] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:11:58,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:11:58,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 12:11:58,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091246332] [2022-12-13 12:11:58,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:11:58,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 12:11:58,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:11:58,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 12:11:58,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 12:11:58,188 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 516 [2022-12-13 12:11:58,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 84 transitions, 180 flow. Second operand has 2 states, 2 states have (on average 224.5) internal successors, (449), 2 states have internal predecessors, (449), 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 12:11:58,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:11:58,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 516 [2022-12-13 12:11:58,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:11:59,314 INFO L130 PetriNetUnfolder]: 871/1776 cut-off events. [2022-12-13 12:11:59,314 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-12-13 12:11:59,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3277 conditions, 1776 events. 871/1776 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 12278 event pairs, 870 based on Foata normal form. 29/1159 useless extension candidates. Maximal degree in co-relation 3060. Up to 1480 conditions per place. [2022-12-13 12:11:59,325 INFO L137 encePairwiseOnDemand]: 498/516 looper letters, 46 selfloop transitions, 0 changer transitions 0/66 dead transitions. [2022-12-13 12:11:59,325 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 66 transitions, 236 flow [2022-12-13 12:11:59,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 12:11:59,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 12:11:59,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 512 transitions. [2022-12-13 12:11:59,338 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49612403100775193 [2022-12-13 12:11:59,338 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 512 transitions. [2022-12-13 12:11:59,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 512 transitions. [2022-12-13 12:11:59,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:11:59,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 512 transitions. [2022-12-13 12:11:59,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 256.0) internal successors, (512), 2 states have internal predecessors, (512), 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 12:11:59,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 516.0) internal successors, (1548), 3 states have internal predecessors, (1548), 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 12:11:59,349 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 516.0) internal successors, (1548), 3 states have internal predecessors, (1548), 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 12:11:59,350 INFO L175 Difference]: Start difference. First operand has 87 places, 84 transitions, 180 flow. Second operand 2 states and 512 transitions. [2022-12-13 12:11:59,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 66 transitions, 236 flow [2022-12-13 12:11:59,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 66 transitions, 228 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 12:11:59,356 INFO L231 Difference]: Finished difference. Result has 68 places, 66 transitions, 136 flow [2022-12-13 12:11:59,357 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=136, PETRI_PLACES=68, PETRI_TRANSITIONS=66} [2022-12-13 12:11:59,360 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, -19 predicate places. [2022-12-13 12:11:59,360 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 66 transitions, 136 flow [2022-12-13 12:11:59,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 224.5) internal successors, (449), 2 states have internal predecessors, (449), 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 12:11:59,361 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:11:59,361 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 12:11:59,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:11:59,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:11:59,562 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 12:11:59,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:11:59,563 INFO L85 PathProgramCache]: Analyzing trace with hash 26523, now seen corresponding path program 1 times [2022-12-13 12:11:59,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:11:59,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097980270] [2022-12-13 12:11:59,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:11:59,565 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 12:11:59,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:11:59,566 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:11:59,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:11:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:11:59,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:11:59,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:11:59,825 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 12:11:59,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:11:59,825 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:11:59,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097980270] [2022-12-13 12:11:59,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097980270] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:11:59,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:11:59,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:11:59,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477463589] [2022-12-13 12:11:59,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:11:59,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:11:59,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:11:59,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:11:59,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:11:59,839 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 516 [2022-12-13 12:11:59,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 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 12:11:59,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:11:59,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 516 [2022-12-13 12:11:59,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:12:01,275 INFO L130 PetriNetUnfolder]: 870/1635 cut-off events. [2022-12-13 12:12:01,275 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 12:12:01,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3132 conditions, 1635 events. 870/1635 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 9882 event pairs, 870 based on Foata normal form. 0/1090 useless extension candidates. Maximal degree in co-relation 3129. Up to 1475 conditions per place. [2022-12-13 12:12:01,286 INFO L137 encePairwiseOnDemand]: 512/516 looper letters, 57 selfloop transitions, 1 changer transitions 2/80 dead transitions. [2022-12-13 12:12:01,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 80 transitions, 284 flow [2022-12-13 12:12:01,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:12:01,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:12:01,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 723 transitions. [2022-12-13 12:12:01,295 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46705426356589147 [2022-12-13 12:12:01,295 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 723 transitions. [2022-12-13 12:12:01,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 723 transitions. [2022-12-13 12:12:01,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:12:01,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 723 transitions. [2022-12-13 12:12:01,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 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 12:12:01,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 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 12:12:01,302 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 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 12:12:01,303 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 136 flow. Second operand 3 states and 723 transitions. [2022-12-13 12:12:01,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 80 transitions, 284 flow [2022-12-13 12:12:01,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 80 transitions, 284 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 12:12:01,305 INFO L231 Difference]: Finished difference. Result has 71 places, 66 transitions, 145 flow [2022-12-13 12:12:01,305 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=68, 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=145, PETRI_PLACES=71, PETRI_TRANSITIONS=66} [2022-12-13 12:12:01,306 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, -16 predicate places. [2022-12-13 12:12:01,306 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 66 transitions, 145 flow [2022-12-13 12:12:01,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 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 12:12:01,307 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:12:01,307 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 12:12:01,316 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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)] Ended with exit code 0 [2022-12-13 12:12:01,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:01,508 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 12:12:01,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:12:01,510 INFO L85 PathProgramCache]: Analyzing trace with hash 816733, now seen corresponding path program 1 times [2022-12-13 12:12:01,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:12:01,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993457112] [2022-12-13 12:12:01,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:12:01,513 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 12:12:01,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:12:01,516 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:01,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:12:01,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 12:12:01,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:12:01,833 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-13 12:12:01,834 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 2 case distinctions, treesize of input 19 treesize of output 27 [2022-12-13 12:12:01,855 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 12:12:01,855 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:12:01,856 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:12:01,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1993457112] [2022-12-13 12:12:01,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1993457112] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:12:01,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:12:01,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:12:01,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573859609] [2022-12-13 12:12:01,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:12:01,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:12:01,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:12:01,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:12:01,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:12:02,195 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 516 [2022-12-13 12:12:02,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 66 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 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 12:12:02,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:12:02,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 516 [2022-12-13 12:12:02,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:12:03,566 INFO L130 PetriNetUnfolder]: 861/1730 cut-off events. [2022-12-13 12:12:03,567 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-12-13 12:12:03,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3294 conditions, 1730 events. 861/1730 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 11574 event pairs, 771 based on Foata normal form. 0/1145 useless extension candidates. Maximal degree in co-relation 3289. Up to 1302 conditions per place. [2022-12-13 12:12:03,573 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 55 selfloop transitions, 9 changer transitions 1/85 dead transitions. [2022-12-13 12:12:03,573 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 85 transitions, 313 flow [2022-12-13 12:12:03,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:12:03,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:12:03,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 727 transitions. [2022-12-13 12:12:03,576 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46963824289405687 [2022-12-13 12:12:03,576 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 727 transitions. [2022-12-13 12:12:03,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 727 transitions. [2022-12-13 12:12:03,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:12:03,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 727 transitions. [2022-12-13 12:12:03,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 242.33333333333334) internal successors, (727), 3 states have internal predecessors, (727), 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 12:12:03,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 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 12:12:03,580 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 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 12:12:03,580 INFO L175 Difference]: Start difference. First operand has 71 places, 66 transitions, 145 flow. Second operand 3 states and 727 transitions. [2022-12-13 12:12:03,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 85 transitions, 313 flow [2022-12-13 12:12:03,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 85 transitions, 312 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:12:03,582 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 171 flow [2022-12-13 12:12:03,582 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2022-12-13 12:12:03,583 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, -16 predicate places. [2022-12-13 12:12:03,583 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 171 flow [2022-12-13 12:12:03,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 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 12:12:03,584 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:12:03,584 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 12:12:03,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:03,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:03,786 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 12:12:03,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:12:03,787 INFO L85 PathProgramCache]: Analyzing trace with hash 816734, now seen corresponding path program 1 times [2022-12-13 12:12:03,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:12:03,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1367765022] [2022-12-13 12:12:03,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:12:03,791 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 12:12:03,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:12:03,794 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:03,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:04,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:12:04,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 12:12:04,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:12:04,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:04,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 12:12:04,137 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 12:12:04,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:12:04,137 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:12:04,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1367765022] [2022-12-13 12:12:04,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1367765022] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:12:04,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:12:04,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:12:04,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781330863] [2022-12-13 12:12:04,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:12:04,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:12:04,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:12:04,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:12:04,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:12:04,464 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 516 [2022-12-13 12:12:04,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 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 12:12:04,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:12:04,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 516 [2022-12-13 12:12:04,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:12:05,437 INFO L130 PetriNetUnfolder]: 852/1737 cut-off events. [2022-12-13 12:12:05,437 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2022-12-13 12:12:05,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3355 conditions, 1737 events. 852/1737 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 11849 event pairs, 852 based on Foata normal form. 0/1149 useless extension candidates. Maximal degree in co-relation 3349. Up to 1449 conditions per place. [2022-12-13 12:12:05,447 INFO L137 encePairwiseOnDemand]: 512/516 looper letters, 41 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2022-12-13 12:12:05,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 63 transitions, 253 flow [2022-12-13 12:12:05,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:12:05,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:12:05,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 707 transitions. [2022-12-13 12:12:05,450 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45671834625323 [2022-12-13 12:12:05,450 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 707 transitions. [2022-12-13 12:12:05,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 707 transitions. [2022-12-13 12:12:05,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:12:05,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 707 transitions. [2022-12-13 12:12:05,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 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 12:12:05,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 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 12:12:05,454 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 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 12:12:05,454 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 171 flow. Second operand 3 states and 707 transitions. [2022-12-13 12:12:05,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 63 transitions, 253 flow [2022-12-13 12:12:05,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 63 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:12:05,455 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 162 flow [2022-12-13 12:12:05,455 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2022-12-13 12:12:05,456 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, -17 predicate places. [2022-12-13 12:12:05,456 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 162 flow [2022-12-13 12:12:05,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 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 12:12:05,456 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:12:05,456 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 12:12:05,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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)] Forceful destruction successful, exit code 0 [2022-12-13 12:12:05,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:05,658 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 12:12:05,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:12:05,659 INFO L85 PathProgramCache]: Analyzing trace with hash 820325, now seen corresponding path program 1 times [2022-12-13 12:12:05,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:12:05,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1921410830] [2022-12-13 12:12:05,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:12:05,662 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 12:12:05,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:12:05,665 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:05,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:12:05,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:12:05,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:12:05,801 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 5 [2022-12-13 12:12:05,818 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 12:12:05,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:12:05,818 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:12:05,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1921410830] [2022-12-13 12:12:05,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1921410830] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:12:05,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:12:05,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:12:05,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115617481] [2022-12-13 12:12:05,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:12:05,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:12:05,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:12:05,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:12:05,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:12:06,108 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 516 [2022-12-13 12:12:06,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 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 12:12:06,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:12:06,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 516 [2022-12-13 12:12:06,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:12:06,828 INFO L130 PetriNetUnfolder]: 672/1356 cut-off events. [2022-12-13 12:12:06,828 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2022-12-13 12:12:06,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2645 conditions, 1356 events. 672/1356 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 8615 event pairs, 429 based on Foata normal form. 29/976 useless extension candidates. Maximal degree in co-relation 2639. Up to 727 conditions per place. [2022-12-13 12:12:06,833 INFO L137 encePairwiseOnDemand]: 506/516 looper letters, 52 selfloop transitions, 6 changer transitions 1/79 dead transitions. [2022-12-13 12:12:06,833 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 79 transitions, 312 flow [2022-12-13 12:12:06,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:12:06,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:12:06,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 705 transitions. [2022-12-13 12:12:06,835 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45542635658914726 [2022-12-13 12:12:06,835 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 705 transitions. [2022-12-13 12:12:06,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 705 transitions. [2022-12-13 12:12:06,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:12:06,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 705 transitions. [2022-12-13 12:12:06,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 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 12:12:06,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 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 12:12:06,841 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 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 12:12:06,841 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 162 flow. Second operand 3 states and 705 transitions. [2022-12-13 12:12:06,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 79 transitions, 312 flow [2022-12-13 12:12:06,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 79 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:12:06,844 INFO L231 Difference]: Finished difference. Result has 72 places, 63 transitions, 186 flow [2022-12-13 12:12:06,844 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=72, PETRI_TRANSITIONS=63} [2022-12-13 12:12:06,845 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, -15 predicate places. [2022-12-13 12:12:06,845 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 63 transitions, 186 flow [2022-12-13 12:12:06,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 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 12:12:06,845 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:12:06,845 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 12:12:06,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:07,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:07,047 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 12:12:07,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:12:07,048 INFO L85 PathProgramCache]: Analyzing trace with hash 820324, now seen corresponding path program 1 times [2022-12-13 12:12:07,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:12:07,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1245888262] [2022-12-13 12:12:07,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:12:07,051 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 12:12:07,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:12:07,054 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:07,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:12:07,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 12:12:07,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:12:07,201 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 12:12:07,209 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 12:12:07,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:12:07,209 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:12:07,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1245888262] [2022-12-13 12:12:07,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1245888262] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:12:07,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:12:07,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:12:07,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691051100] [2022-12-13 12:12:07,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:12:07,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:12:07,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:12:07,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:12:07,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:12:07,487 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 516 [2022-12-13 12:12:07,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 63 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 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 12:12:07,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:12:07,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 516 [2022-12-13 12:12:07,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:12:08,953 INFO L130 PetriNetUnfolder]: 672/1338 cut-off events. [2022-12-13 12:12:08,953 INFO L131 PetriNetUnfolder]: For 122/122 co-relation queries the response was YES. [2022-12-13 12:12:08,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2860 conditions, 1338 events. 672/1338 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 8169 event pairs, 582 based on Foata normal form. 0/958 useless extension candidates. Maximal degree in co-relation 2853. Up to 1001 conditions per place. [2022-12-13 12:12:08,957 INFO L137 encePairwiseOnDemand]: 510/516 looper letters, 46 selfloop transitions, 6 changer transitions 0/71 dead transitions. [2022-12-13 12:12:08,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 71 transitions, 306 flow [2022-12-13 12:12:08,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:12:08,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:12:08,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 673 transitions. [2022-12-13 12:12:08,960 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4347545219638243 [2022-12-13 12:12:08,960 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 673 transitions. [2022-12-13 12:12:08,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 673 transitions. [2022-12-13 12:12:08,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:12:08,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 673 transitions. [2022-12-13 12:12:08,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 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 12:12:08,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 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 12:12:08,963 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 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 12:12:08,963 INFO L175 Difference]: Start difference. First operand has 72 places, 63 transitions, 186 flow. Second operand 3 states and 673 transitions. [2022-12-13 12:12:08,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 71 transitions, 306 flow [2022-12-13 12:12:08,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 71 transitions, 291 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:12:08,965 INFO L231 Difference]: Finished difference. Result has 71 places, 62 transitions, 181 flow [2022-12-13 12:12:08,965 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=71, PETRI_TRANSITIONS=62} [2022-12-13 12:12:08,966 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, -16 predicate places. [2022-12-13 12:12:08,966 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 62 transitions, 181 flow [2022-12-13 12:12:08,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 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 12:12:08,966 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:12:08,966 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 12:12:08,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:09,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:09,168 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 12:12:09,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:12:09,169 INFO L85 PathProgramCache]: Analyzing trace with hash 25319842, now seen corresponding path program 1 times [2022-12-13 12:12:09,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:12:09,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2010044228] [2022-12-13 12:12:09,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:12:09,171 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 12:12:09,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:12:09,174 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:09,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:09,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:12:09,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 12:12:09,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:12:09,334 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 12:12:09,347 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 12:12:09,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:12:09,347 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:12:09,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2010044228] [2022-12-13 12:12:09,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2010044228] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:12:09,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:12:09,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:12:09,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737271330] [2022-12-13 12:12:09,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:12:09,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:12:09,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:12:09,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:12:09,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:12:09,702 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 516 [2022-12-13 12:12:09,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 62 transitions, 181 flow. Second operand has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 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 12:12:09,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:12:09,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 516 [2022-12-13 12:12:09,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:12:11,948 INFO L130 PetriNetUnfolder]: 1100/2072 cut-off events. [2022-12-13 12:12:11,948 INFO L131 PetriNetUnfolder]: For 169/169 co-relation queries the response was YES. [2022-12-13 12:12:11,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4337 conditions, 2072 events. 1100/2072 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12526 event pairs, 339 based on Foata normal form. 0/1589 useless extension candidates. Maximal degree in co-relation 4330. Up to 1225 conditions per place. [2022-12-13 12:12:11,955 INFO L137 encePairwiseOnDemand]: 501/516 looper letters, 82 selfloop transitions, 13 changer transitions 1/111 dead transitions. [2022-12-13 12:12:11,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 111 transitions, 494 flow [2022-12-13 12:12:11,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:12:11,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:12:11,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1160 transitions. [2022-12-13 12:12:11,958 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4496124031007752 [2022-12-13 12:12:11,958 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1160 transitions. [2022-12-13 12:12:11,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1160 transitions. [2022-12-13 12:12:11,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:12:11,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1160 transitions. [2022-12-13 12:12:11,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 232.0) internal successors, (1160), 5 states have internal predecessors, (1160), 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 12:12:11,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 516.0) internal successors, (3096), 6 states have internal predecessors, (3096), 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 12:12:11,962 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 516.0) internal successors, (3096), 6 states have internal predecessors, (3096), 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 12:12:11,962 INFO L175 Difference]: Start difference. First operand has 71 places, 62 transitions, 181 flow. Second operand 5 states and 1160 transitions. [2022-12-13 12:12:11,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 111 transitions, 494 flow [2022-12-13 12:12:11,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 111 transitions, 478 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:12:11,965 INFO L231 Difference]: Finished difference. Result has 77 places, 68 transitions, 259 flow [2022-12-13 12:12:11,965 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=259, PETRI_PLACES=77, PETRI_TRANSITIONS=68} [2022-12-13 12:12:11,965 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, -10 predicate places. [2022-12-13 12:12:11,965 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 68 transitions, 259 flow [2022-12-13 12:12:11,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 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 12:12:11,966 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:12:11,966 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 12:12:11,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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)] Ended with exit code 0 [2022-12-13 12:12:12,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:12,167 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 12:12:12,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:12:12,168 INFO L85 PathProgramCache]: Analyzing trace with hash 25319843, now seen corresponding path program 1 times [2022-12-13 12:12:12,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:12:12,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1111675692] [2022-12-13 12:12:12,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:12:12,171 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 12:12:12,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:12:12,174 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:12,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:12:12,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 12:12:12,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:12:12,302 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 5 [2022-12-13 12:12:12,331 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 12:12:12,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:12:12,332 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:12:12,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1111675692] [2022-12-13 12:12:12,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1111675692] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:12:12,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:12:12,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:12:12,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339820314] [2022-12-13 12:12:12,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:12:12,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:12:12,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:12:12,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:12:12,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:12:12,682 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 516 [2022-12-13 12:12:12,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 259 flow. Second operand has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 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 12:12:12,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:12:12,683 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 516 [2022-12-13 12:12:12,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:12:14,991 INFO L130 PetriNetUnfolder]: 750/1591 cut-off events. [2022-12-13 12:12:14,991 INFO L131 PetriNetUnfolder]: For 598/598 co-relation queries the response was YES. [2022-12-13 12:12:14,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3802 conditions, 1591 events. 750/1591 cut-off events. For 598/598 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 10654 event pairs, 88 based on Foata normal form. 258/1493 useless extension candidates. Maximal degree in co-relation 3792. Up to 769 conditions per place. [2022-12-13 12:12:14,996 INFO L137 encePairwiseOnDemand]: 508/516 looper letters, 75 selfloop transitions, 9 changer transitions 2/105 dead transitions. [2022-12-13 12:12:14,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 105 transitions, 524 flow [2022-12-13 12:12:14,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:12:14,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:12:14,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 950 transitions. [2022-12-13 12:12:14,999 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46027131782945735 [2022-12-13 12:12:14,999 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 950 transitions. [2022-12-13 12:12:14,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 950 transitions. [2022-12-13 12:12:15,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:12:15,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 950 transitions. [2022-12-13 12:12:15,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 237.5) internal successors, (950), 4 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:12:15,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 516.0) internal successors, (2580), 5 states have internal predecessors, (2580), 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 12:12:15,002 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 516.0) internal successors, (2580), 5 states have internal predecessors, (2580), 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 12:12:15,002 INFO L175 Difference]: Start difference. First operand has 77 places, 68 transitions, 259 flow. Second operand 4 states and 950 transitions. [2022-12-13 12:12:15,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 105 transitions, 524 flow [2022-12-13 12:12:15,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 105 transitions, 524 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 12:12:15,006 INFO L231 Difference]: Finished difference. Result has 82 places, 72 transitions, 320 flow [2022-12-13 12:12:15,006 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=320, PETRI_PLACES=82, PETRI_TRANSITIONS=72} [2022-12-13 12:12:15,007 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, -5 predicate places. [2022-12-13 12:12:15,007 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 72 transitions, 320 flow [2022-12-13 12:12:15,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 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 12:12:15,007 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:12:15,007 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:12:15,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:15,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:15,209 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 12:12:15,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:12:15,211 INFO L85 PathProgramCache]: Analyzing trace with hash 788344927, now seen corresponding path program 1 times [2022-12-13 12:12:15,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:12:15,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676398342] [2022-12-13 12:12:15,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:12:15,213 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 12:12:15,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:12:15,216 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:15,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:15,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:12:15,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 12:12:15,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:12:15,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 28 treesize of output 45 [2022-12-13 12:12:15,503 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:12:15,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 6 case distinctions, treesize of input 73 treesize of output 93 [2022-12-13 12:12:15,522 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 12:12:15,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:12:15,522 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:12:15,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [676398342] [2022-12-13 12:12:15,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [676398342] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:12:15,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:12:15,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:12:15,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989932259] [2022-12-13 12:12:15,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:12:15,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:12:15,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:12:15,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:12:15,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:12:16,092 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 516 [2022-12-13 12:12:16,092 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 72 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 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 12:12:16,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:12:16,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 516 [2022-12-13 12:12:16,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:12:17,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:12:18,717 INFO L130 PetriNetUnfolder]: 1074/2166 cut-off events. [2022-12-13 12:12:18,717 INFO L131 PetriNetUnfolder]: For 1734/1869 co-relation queries the response was YES. [2022-12-13 12:12:18,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5550 conditions, 2166 events. 1074/2166 cut-off events. For 1734/1869 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 15011 event pairs, 597 based on Foata normal form. 7/1596 useless extension candidates. Maximal degree in co-relation 5537. Up to 1420 conditions per place. [2022-12-13 12:12:18,725 INFO L137 encePairwiseOnDemand]: 507/516 looper letters, 57 selfloop transitions, 11 changer transitions 0/88 dead transitions. [2022-12-13 12:12:18,725 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 88 transitions, 514 flow [2022-12-13 12:12:18,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:12:18,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:12:18,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 688 transitions. [2022-12-13 12:12:18,728 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2022-12-13 12:12:18,728 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 688 transitions. [2022-12-13 12:12:18,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 688 transitions. [2022-12-13 12:12:18,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:12:18,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 688 transitions. [2022-12-13 12:12:18,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 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 12:12:18,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 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 12:12:18,730 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 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 12:12:18,730 INFO L175 Difference]: Start difference. First operand has 82 places, 72 transitions, 320 flow. Second operand 3 states and 688 transitions. [2022-12-13 12:12:18,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 88 transitions, 514 flow [2022-12-13 12:12:18,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 88 transitions, 494 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-12-13 12:12:18,734 INFO L231 Difference]: Finished difference. Result has 84 places, 79 transitions, 392 flow [2022-12-13 12:12:18,734 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=392, PETRI_PLACES=84, PETRI_TRANSITIONS=79} [2022-12-13 12:12:18,734 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, -3 predicate places. [2022-12-13 12:12:18,735 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 79 transitions, 392 flow [2022-12-13 12:12:18,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 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 12:12:18,735 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:12:18,735 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 12:12:18,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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)] Ended with exit code 0 [2022-12-13 12:12:18,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:18,937 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 12:12:18,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:12:18,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1331110255, now seen corresponding path program 1 times [2022-12-13 12:12:18,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:12:18,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239896426] [2022-12-13 12:12:18,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:12:18,940 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 12:12:18,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:12:18,943 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:18,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 (11)] Waiting until timeout for monitored process [2022-12-13 12:12:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:12:19,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 12:12:19,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:12:19,270 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:12:19,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:12:19,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:12:19,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 41 [2022-12-13 12:12:19,332 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 12:12:19,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:12:19,332 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:12:19,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239896426] [2022-12-13 12:12:19,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [239896426] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:12:19,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:12:19,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:12:19,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125832213] [2022-12-13 12:12:19,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:12:19,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:12:19,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:12:19,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:12:19,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:12:19,967 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 516 [2022-12-13 12:12:19,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 79 transitions, 392 flow. Second operand has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 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 12:12:19,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:12:19,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 516 [2022-12-13 12:12:19,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:12:21,942 INFO L130 PetriNetUnfolder]: 1317/2509 cut-off events. [2022-12-13 12:12:21,942 INFO L131 PetriNetUnfolder]: For 3721/3908 co-relation queries the response was YES. [2022-12-13 12:12:21,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7453 conditions, 2509 events. 1317/2509 cut-off events. For 3721/3908 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 16701 event pairs, 742 based on Foata normal form. 7/2069 useless extension candidates. Maximal degree in co-relation 7440. Up to 1778 conditions per place. [2022-12-13 12:12:21,953 INFO L137 encePairwiseOnDemand]: 506/516 looper letters, 62 selfloop transitions, 17 changer transitions 0/98 dead transitions. [2022-12-13 12:12:21,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 98 transitions, 652 flow [2022-12-13 12:12:21,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:12:21,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:12:21,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 689 transitions. [2022-12-13 12:12:21,955 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4450904392764858 [2022-12-13 12:12:21,955 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 689 transitions. [2022-12-13 12:12:21,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 689 transitions. [2022-12-13 12:12:21,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:12:21,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 689 transitions. [2022-12-13 12:12:21,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 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 12:12:21,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 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 12:12:21,958 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 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 12:12:21,958 INFO L175 Difference]: Start difference. First operand has 84 places, 79 transitions, 392 flow. Second operand 3 states and 689 transitions. [2022-12-13 12:12:21,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 98 transitions, 652 flow [2022-12-13 12:12:21,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 98 transitions, 620 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:12:21,962 INFO L231 Difference]: Finished difference. Result has 86 places, 90 transitions, 528 flow [2022-12-13 12:12:21,962 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=528, PETRI_PLACES=86, PETRI_TRANSITIONS=90} [2022-12-13 12:12:21,963 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, -1 predicate places. [2022-12-13 12:12:21,963 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 90 transitions, 528 flow [2022-12-13 12:12:21,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 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 12:12:21,963 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:12:21,963 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 12:12:21,974 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 (11)] Ended with exit code 0 [2022-12-13 12:12:22,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:22,164 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 12:12:22,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:12:22,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1437916417, now seen corresponding path program 1 times [2022-12-13 12:12:22,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:12:22,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [380545290] [2022-12-13 12:12:22,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:12:22,165 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 12:12:22,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:12:22,166 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:22,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 (12)] Waiting until timeout for monitored process [2022-12-13 12:12:22,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:12:22,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 12:12:22,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:12:22,318 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 12:12:22,339 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 12:12:22,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:12:22,339 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:12:22,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [380545290] [2022-12-13 12:12:22,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [380545290] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:12:22,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:12:22,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:12:22,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570236739] [2022-12-13 12:12:22,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:12:22,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:12:22,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:12:22,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:12:22,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:12:22,644 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 516 [2022-12-13 12:12:22,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 90 transitions, 528 flow. Second operand has 4 states, 4 states have (on average 213.5) internal successors, (854), 4 states have internal predecessors, (854), 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 12:12:22,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:12:22,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 516 [2022-12-13 12:12:22,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:12:24,699 INFO L130 PetriNetUnfolder]: 1323/2522 cut-off events. [2022-12-13 12:12:24,699 INFO L131 PetriNetUnfolder]: For 4834/5172 co-relation queries the response was YES. [2022-12-13 12:12:24,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8340 conditions, 2522 events. 1323/2522 cut-off events. For 4834/5172 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 16856 event pairs, 224 based on Foata normal form. 145/2380 useless extension candidates. Maximal degree in co-relation 8326. Up to 1430 conditions per place. [2022-12-13 12:12:24,708 INFO L137 encePairwiseOnDemand]: 501/516 looper letters, 97 selfloop transitions, 21 changer transitions 0/140 dead transitions. [2022-12-13 12:12:24,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 140 transitions, 1039 flow [2022-12-13 12:12:24,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:12:24,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:12:24,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1148 transitions. [2022-12-13 12:12:24,711 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4449612403100775 [2022-12-13 12:12:24,711 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1148 transitions. [2022-12-13 12:12:24,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1148 transitions. [2022-12-13 12:12:24,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:12:24,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1148 transitions. [2022-12-13 12:12:24,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 229.6) internal successors, (1148), 5 states have internal predecessors, (1148), 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 12:12:24,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 516.0) internal successors, (3096), 6 states have internal predecessors, (3096), 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 12:12:24,717 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 516.0) internal successors, (3096), 6 states have internal predecessors, (3096), 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 12:12:24,718 INFO L175 Difference]: Start difference. First operand has 86 places, 90 transitions, 528 flow. Second operand 5 states and 1148 transitions. [2022-12-13 12:12:24,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 140 transitions, 1039 flow [2022-12-13 12:12:24,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 140 transitions, 993 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:12:24,725 INFO L231 Difference]: Finished difference. Result has 92 places, 98 transitions, 664 flow [2022-12-13 12:12:24,726 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=664, PETRI_PLACES=92, PETRI_TRANSITIONS=98} [2022-12-13 12:12:24,726 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, 5 predicate places. [2022-12-13 12:12:24,726 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 98 transitions, 664 flow [2022-12-13 12:12:24,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 213.5) internal successors, (854), 4 states have internal predecessors, (854), 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 12:12:24,726 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:12:24,726 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 12:12:24,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 (12)] Ended with exit code 0 [2022-12-13 12:12:24,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:24,927 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 12:12:24,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:12:24,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1437916416, now seen corresponding path program 1 times [2022-12-13 12:12:24,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:12:24,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [863039853] [2022-12-13 12:12:24,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:12:24,928 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 12:12:24,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:12:24,929 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:24,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 (13)] Waiting until timeout for monitored process [2022-12-13 12:12:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:12:25,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 12:12:25,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:12:25,065 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 5 [2022-12-13 12:12:25,103 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 12:12:25,103 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:12:25,104 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:12:25,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [863039853] [2022-12-13 12:12:25,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [863039853] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:12:25,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:12:25,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:12:25,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728671388] [2022-12-13 12:12:25,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:12:25,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:12:25,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:12:25,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:12:25,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:12:25,836 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 516 [2022-12-13 12:12:25,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 98 transitions, 664 flow. Second operand has 4 states, 4 states have (on average 217.5) internal successors, (870), 4 states have internal predecessors, (870), 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 12:12:25,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:12:25,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 516 [2022-12-13 12:12:25,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:12:28,458 INFO L130 PetriNetUnfolder]: 982/1943 cut-off events. [2022-12-13 12:12:28,458 INFO L131 PetriNetUnfolder]: For 5158/5507 co-relation queries the response was YES. [2022-12-13 12:12:28,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7109 conditions, 1943 events. 982/1943 cut-off events. For 5158/5507 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 12709 event pairs, 191 based on Foata normal form. 330/2020 useless extension candidates. Maximal degree in co-relation 7092. Up to 1172 conditions per place. [2022-12-13 12:12:28,464 INFO L137 encePairwiseOnDemand]: 508/516 looper letters, 92 selfloop transitions, 15 changer transitions 3/134 dead transitions. [2022-12-13 12:12:28,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 134 transitions, 1066 flow [2022-12-13 12:12:28,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:12:28,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:12:28,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 939 transitions. [2022-12-13 12:12:28,467 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45494186046511625 [2022-12-13 12:12:28,467 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 939 transitions. [2022-12-13 12:12:28,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 939 transitions. [2022-12-13 12:12:28,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:12:28,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 939 transitions. [2022-12-13 12:12:28,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 234.75) internal successors, (939), 4 states have internal predecessors, (939), 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 12:12:28,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 516.0) internal successors, (2580), 5 states have internal predecessors, (2580), 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 12:12:28,470 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 516.0) internal successors, (2580), 5 states have internal predecessors, (2580), 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 12:12:28,470 INFO L175 Difference]: Start difference. First operand has 92 places, 98 transitions, 664 flow. Second operand 4 states and 939 transitions. [2022-12-13 12:12:28,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 134 transitions, 1066 flow [2022-12-13 12:12:28,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 134 transitions, 1066 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 12:12:28,477 INFO L231 Difference]: Finished difference. Result has 97 places, 104 transitions, 757 flow [2022-12-13 12:12:28,477 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=757, PETRI_PLACES=97, PETRI_TRANSITIONS=104} [2022-12-13 12:12:28,478 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, 10 predicate places. [2022-12-13 12:12:28,478 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 104 transitions, 757 flow [2022-12-13 12:12:28,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 217.5) internal successors, (870), 4 states have internal predecessors, (870), 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 12:12:28,478 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:12:28,478 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 12:12:28,488 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 (13)] Ended with exit code 0 [2022-12-13 12:12:28,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:28,679 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 12:12:28,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:12:28,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1437916436, now seen corresponding path program 1 times [2022-12-13 12:12:28,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:12:28,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [460755372] [2022-12-13 12:12:28,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:12:28,683 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 12:12:28,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:12:28,686 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:28,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 (14)] Waiting until timeout for monitored process [2022-12-13 12:12:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:12:28,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 12:12:28,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:12:28,942 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-13 12:12:28,943 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 2 case distinctions, treesize of input 19 treesize of output 27 [2022-12-13 12:12:28,970 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 12:12:28,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:12:28,970 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:12:28,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [460755372] [2022-12-13 12:12:28,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [460755372] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:12:28,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:12:28,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:12:28,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250544877] [2022-12-13 12:12:28,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:12:28,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:12:28,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:12:28,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:12:28,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:12:29,259 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 516 [2022-12-13 12:12:29,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 104 transitions, 757 flow. Second operand has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 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 12:12:29,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:12:29,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 516 [2022-12-13 12:12:29,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:12:30,415 INFO L130 PetriNetUnfolder]: 853/1699 cut-off events. [2022-12-13 12:12:30,415 INFO L131 PetriNetUnfolder]: For 5437/5701 co-relation queries the response was YES. [2022-12-13 12:12:30,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6562 conditions, 1699 events. 853/1699 cut-off events. For 5437/5701 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 10819 event pairs, 434 based on Foata normal form. 14/1517 useless extension candidates. Maximal degree in co-relation 6542. Up to 986 conditions per place. [2022-12-13 12:12:30,421 INFO L137 encePairwiseOnDemand]: 506/516 looper letters, 62 selfloop transitions, 19 changer transitions 0/107 dead transitions. [2022-12-13 12:12:30,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 107 transitions, 915 flow [2022-12-13 12:12:30,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:12:30,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:12:30,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 711 transitions. [2022-12-13 12:12:30,423 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45930232558139533 [2022-12-13 12:12:30,423 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 711 transitions. [2022-12-13 12:12:30,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 711 transitions. [2022-12-13 12:12:30,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:12:30,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 711 transitions. [2022-12-13 12:12:30,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 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 12:12:30,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 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 12:12:30,428 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 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 12:12:30,428 INFO L175 Difference]: Start difference. First operand has 97 places, 104 transitions, 757 flow. Second operand 3 states and 711 transitions. [2022-12-13 12:12:30,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 107 transitions, 915 flow [2022-12-13 12:12:30,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 107 transitions, 906 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:12:30,438 INFO L231 Difference]: Finished difference. Result has 96 places, 100 transitions, 750 flow [2022-12-13 12:12:30,438 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=750, PETRI_PLACES=96, PETRI_TRANSITIONS=100} [2022-12-13 12:12:30,438 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, 9 predicate places. [2022-12-13 12:12:30,438 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 100 transitions, 750 flow [2022-12-13 12:12:30,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 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 12:12:30,439 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:12:30,439 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 12:12:30,449 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 (14)] Ended with exit code 0 [2022-12-13 12:12:30,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:30,640 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 12:12:30,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:12:30,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1437916437, now seen corresponding path program 1 times [2022-12-13 12:12:30,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:12:30,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1135554285] [2022-12-13 12:12:30,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:12:30,645 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 12:12:30,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:12:30,648 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:30,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 (15)] Waiting until timeout for monitored process [2022-12-13 12:12:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:12:30,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 12:12:30,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:12:30,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:30,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 12:12:30,917 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 12:12:30,917 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:12:30,917 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:12:30,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1135554285] [2022-12-13 12:12:30,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1135554285] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:12:30,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:12:30,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:12:30,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150544404] [2022-12-13 12:12:30,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:12:30,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:12:30,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:12:30,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:12:30,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:12:31,219 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 516 [2022-12-13 12:12:31,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 100 transitions, 750 flow. Second operand has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 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 12:12:31,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:12:31,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 516 [2022-12-13 12:12:31,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:12:32,078 INFO L130 PetriNetUnfolder]: 815/1611 cut-off events. [2022-12-13 12:12:32,078 INFO L131 PetriNetUnfolder]: For 5924/6151 co-relation queries the response was YES. [2022-12-13 12:12:32,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6303 conditions, 1611 events. 815/1611 cut-off events. For 5924/6151 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 10070 event pairs, 442 based on Foata normal form. 14/1457 useless extension candidates. Maximal degree in co-relation 6283. Up to 1340 conditions per place. [2022-12-13 12:12:32,084 INFO L137 encePairwiseOnDemand]: 513/516 looper letters, 68 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2022-12-13 12:12:32,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 96 transitions, 858 flow [2022-12-13 12:12:32,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:12:32,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:12:32,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 702 transitions. [2022-12-13 12:12:32,086 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45348837209302323 [2022-12-13 12:12:32,086 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 702 transitions. [2022-12-13 12:12:32,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 702 transitions. [2022-12-13 12:12:32,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:12:32,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 702 transitions. [2022-12-13 12:12:32,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 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 12:12:32,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 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 12:12:32,090 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 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 12:12:32,090 INFO L175 Difference]: Start difference. First operand has 96 places, 100 transitions, 750 flow. Second operand 3 states and 702 transitions. [2022-12-13 12:12:32,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 96 transitions, 858 flow [2022-12-13 12:12:32,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 96 transitions, 820 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:12:32,096 INFO L231 Difference]: Finished difference. Result has 95 places, 96 transitions, 684 flow [2022-12-13 12:12:32,096 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=684, PETRI_PLACES=95, PETRI_TRANSITIONS=96} [2022-12-13 12:12:32,096 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, 8 predicate places. [2022-12-13 12:12:32,096 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 96 transitions, 684 flow [2022-12-13 12:12:32,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 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 12:12:32,097 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:12:32,097 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:12:32,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 (15)] Ended with exit code 0 [2022-12-13 12:12:32,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:32,298 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 12:12:32,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:12:32,298 INFO L85 PathProgramCache]: Analyzing trace with hash 703324687, now seen corresponding path program 1 times [2022-12-13 12:12:32,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:12:32,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [553608370] [2022-12-13 12:12:32,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:12:32,299 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 12:12:32,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:12:32,301 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:32,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 (16)] Waiting until timeout for monitored process [2022-12-13 12:12:32,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:12:32,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 12:12:32,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:12:32,709 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#data~1#1.base_191| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_191|) (_ bv0 1)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_191| (_ bv0 1))))) is different from true [2022-12-13 12:12:32,710 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 12:12:32,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:12:32,710 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:12:32,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [553608370] [2022-12-13 12:12:32,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [553608370] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:12:32,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:12:32,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:12:32,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122910738] [2022-12-13 12:12:32,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:12:32,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:12:32,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:12:32,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:12:32,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2022-12-13 12:12:32,713 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 516 [2022-12-13 12:12:32,714 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 96 transitions, 684 flow. Second operand has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 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 12:12:32,714 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:12:32,714 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 516 [2022-12-13 12:12:32,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:12:34,096 INFO L130 PetriNetUnfolder]: 1852/3157 cut-off events. [2022-12-13 12:12:34,096 INFO L131 PetriNetUnfolder]: For 7880/7880 co-relation queries the response was YES. [2022-12-13 12:12:34,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11606 conditions, 3157 events. 1852/3157 cut-off events. For 7880/7880 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 17924 event pairs, 761 based on Foata normal form. 0/2863 useless extension candidates. Maximal degree in co-relation 11586. Up to 1526 conditions per place. [2022-12-13 12:12:34,111 INFO L137 encePairwiseOnDemand]: 494/516 looper letters, 84 selfloop transitions, 32 changer transitions 2/125 dead transitions. [2022-12-13 12:12:34,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 125 transitions, 1078 flow [2022-12-13 12:12:34,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:12:34,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:12:34,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 712 transitions. [2022-12-13 12:12:34,113 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3449612403100775 [2022-12-13 12:12:34,114 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 712 transitions. [2022-12-13 12:12:34,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 712 transitions. [2022-12-13 12:12:34,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:12:34,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 712 transitions. [2022-12-13 12:12:34,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 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 12:12:34,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 516.0) internal successors, (2580), 5 states have internal predecessors, (2580), 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 12:12:34,118 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 516.0) internal successors, (2580), 5 states have internal predecessors, (2580), 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 12:12:34,118 INFO L175 Difference]: Start difference. First operand has 95 places, 96 transitions, 684 flow. Second operand 4 states and 712 transitions. [2022-12-13 12:12:34,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 125 transitions, 1078 flow [2022-12-13 12:12:34,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 125 transitions, 1076 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:12:34,129 INFO L231 Difference]: Finished difference. Result has 98 places, 111 transitions, 888 flow [2022-12-13 12:12:34,129 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=888, PETRI_PLACES=98, PETRI_TRANSITIONS=111} [2022-12-13 12:12:34,129 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, 11 predicate places. [2022-12-13 12:12:34,129 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 111 transitions, 888 flow [2022-12-13 12:12:34,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 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 12:12:34,130 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:12:34,130 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:12:34,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 (16)] Ended with exit code 0 [2022-12-13 12:12:34,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:34,331 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 12:12:34,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:12:34,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1826373577, now seen corresponding path program 1 times [2022-12-13 12:12:34,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:12:34,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [124252816] [2022-12-13 12:12:34,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:12:34,334 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 12:12:34,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:12:34,337 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:34,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 (17)] Waiting until timeout for monitored process [2022-12-13 12:12:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:12:34,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 12:12:34,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:12:34,565 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 5 [2022-12-13 12:12:34,572 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 12:12:34,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:34,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 12:12:34,644 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 12:12:34,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 12:12:34,656 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 12:12:34,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:12:34,657 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:12:34,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [124252816] [2022-12-13 12:12:34,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [124252816] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:12:34,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:12:34,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:12:34,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102450157] [2022-12-13 12:12:34,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:12:34,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:12:34,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:12:34,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:12:34,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:12:35,709 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 516 [2022-12-13 12:12:35,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 111 transitions, 888 flow. Second operand has 5 states, 5 states have (on average 209.6) internal successors, (1048), 5 states have internal predecessors, (1048), 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 12:12:35,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:12:35,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 516 [2022-12-13 12:12:35,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:12:37,251 INFO L130 PetriNetUnfolder]: 1717/3046 cut-off events. [2022-12-13 12:12:37,251 INFO L131 PetriNetUnfolder]: For 9807/9920 co-relation queries the response was YES. [2022-12-13 12:12:37,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12591 conditions, 3046 events. 1717/3046 cut-off events. For 9807/9920 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 18709 event pairs, 443 based on Foata normal form. 27/2907 useless extension candidates. Maximal degree in co-relation 12570. Up to 1602 conditions per place. [2022-12-13 12:12:37,262 INFO L137 encePairwiseOnDemand]: 501/516 looper letters, 123 selfloop transitions, 25 changer transitions 0/164 dead transitions. [2022-12-13 12:12:37,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 164 transitions, 1521 flow [2022-12-13 12:12:37,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:12:37,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 12:12:37,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1342 transitions. [2022-12-13 12:12:37,265 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4334625322997416 [2022-12-13 12:12:37,265 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1342 transitions. [2022-12-13 12:12:37,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1342 transitions. [2022-12-13 12:12:37,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:12:37,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1342 transitions. [2022-12-13 12:12:37,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 223.66666666666666) internal successors, (1342), 6 states have internal predecessors, (1342), 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 12:12:37,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 516.0) internal successors, (3612), 7 states have internal predecessors, (3612), 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 12:12:37,269 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 516.0) internal successors, (3612), 7 states have internal predecessors, (3612), 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 12:12:37,269 INFO L175 Difference]: Start difference. First operand has 98 places, 111 transitions, 888 flow. Second operand 6 states and 1342 transitions. [2022-12-13 12:12:37,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 164 transitions, 1521 flow [2022-12-13 12:12:37,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 164 transitions, 1429 flow, removed 22 selfloop flow, removed 3 redundant places. [2022-12-13 12:12:37,285 INFO L231 Difference]: Finished difference. Result has 97 places, 109 transitions, 880 flow [2022-12-13 12:12:37,285 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=880, PETRI_PLACES=97, PETRI_TRANSITIONS=109} [2022-12-13 12:12:37,286 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, 10 predicate places. [2022-12-13 12:12:37,286 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 109 transitions, 880 flow [2022-12-13 12:12:37,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 209.6) internal successors, (1048), 5 states have internal predecessors, (1048), 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 12:12:37,286 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:12:37,286 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:12:37,297 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 (17)] Ended with exit code 0 [2022-12-13 12:12:37,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:37,487 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 12:12:37,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:12:37,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1141895689, now seen corresponding path program 1 times [2022-12-13 12:12:37,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:12:37,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [678122769] [2022-12-13 12:12:37,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:12:37,492 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 12:12:37,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:12:37,495 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:37,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 (18)] Waiting until timeout for monitored process [2022-12-13 12:12:37,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:12:37,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 12:12:37,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:12:37,751 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 5 [2022-12-13 12:12:37,757 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 12:12:37,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:37,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 12:12:37,842 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 12:12:37,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 12:12:37,852 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 12:12:37,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:12:37,853 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:12:37,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [678122769] [2022-12-13 12:12:37,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [678122769] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:12:37,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:12:37,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:12:37,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286627978] [2022-12-13 12:12:37,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:12:37,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:12:37,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:12:37,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:12:37,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:12:38,832 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 516 [2022-12-13 12:12:38,833 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 109 transitions, 880 flow. Second operand has 5 states, 5 states have (on average 209.6) internal successors, (1048), 5 states have internal predecessors, (1048), 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 12:12:38,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:12:38,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 516 [2022-12-13 12:12:38,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:12:41,661 INFO L130 PetriNetUnfolder]: 1968/3557 cut-off events. [2022-12-13 12:12:41,661 INFO L131 PetriNetUnfolder]: For 12088/12331 co-relation queries the response was YES. [2022-12-13 12:12:41,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14605 conditions, 3557 events. 1968/3557 cut-off events. For 12088/12331 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 23432 event pairs, 667 based on Foata normal form. 38/3398 useless extension candidates. Maximal degree in co-relation 14584. Up to 2054 conditions per place. [2022-12-13 12:12:41,673 INFO L137 encePairwiseOnDemand]: 501/516 looper letters, 105 selfloop transitions, 25 changer transitions 0/153 dead transitions. [2022-12-13 12:12:41,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 153 transitions, 1400 flow [2022-12-13 12:12:41,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:12:41,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 12:12:41,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1333 transitions. [2022-12-13 12:12:41,676 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2022-12-13 12:12:41,676 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1333 transitions. [2022-12-13 12:12:41,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1333 transitions. [2022-12-13 12:12:41,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:12:41,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1333 transitions. [2022-12-13 12:12:41,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 222.16666666666666) internal successors, (1333), 6 states have internal predecessors, (1333), 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 12:12:41,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 516.0) internal successors, (3612), 7 states have internal predecessors, (3612), 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 12:12:41,686 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 516.0) internal successors, (3612), 7 states have internal predecessors, (3612), 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 12:12:41,686 INFO L175 Difference]: Start difference. First operand has 97 places, 109 transitions, 880 flow. Second operand 6 states and 1333 transitions. [2022-12-13 12:12:41,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 153 transitions, 1400 flow [2022-12-13 12:12:41,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 153 transitions, 1365 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 12:12:41,699 INFO L231 Difference]: Finished difference. Result has 96 places, 107 transitions, 919 flow [2022-12-13 12:12:41,699 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=919, PETRI_PLACES=96, PETRI_TRANSITIONS=107} [2022-12-13 12:12:41,700 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, 9 predicate places. [2022-12-13 12:12:41,700 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 107 transitions, 919 flow [2022-12-13 12:12:41,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 209.6) internal successors, (1048), 5 states have internal predecessors, (1048), 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 12:12:41,700 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:12:41,700 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:12:41,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 (18)] Ended with exit code 0 [2022-12-13 12:12:41,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:41,901 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 12:12:41,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:12:41,902 INFO L85 PathProgramCache]: Analyzing trace with hash 776972249, now seen corresponding path program 1 times [2022-12-13 12:12:41,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:12:41,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1766753247] [2022-12-13 12:12:41,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:12:41,905 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 12:12:41,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:12:41,908 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:41,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 (19)] Waiting until timeout for monitored process [2022-12-13 12:12:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:12:42,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:12:42,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:12:42,122 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 12:12:42,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:12:42,122 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:12:42,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1766753247] [2022-12-13 12:12:42,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1766753247] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:12:42,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:12:42,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:12:42,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494276457] [2022-12-13 12:12:42,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:12:42,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:12:42,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:12:42,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:12:42,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:12:42,130 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 516 [2022-12-13 12:12:42,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 107 transitions, 919 flow. Second operand has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 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 12:12:42,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:12:42,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 516 [2022-12-13 12:12:42,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:12:43,230 INFO L130 PetriNetUnfolder]: 105/255 cut-off events. [2022-12-13 12:12:43,230 INFO L131 PetriNetUnfolder]: For 719/806 co-relation queries the response was YES. [2022-12-13 12:12:43,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 954 conditions, 255 events. 105/255 cut-off events. For 719/806 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1030 event pairs, 23 based on Foata normal form. 23/258 useless extension candidates. Maximal degree in co-relation 933. Up to 162 conditions per place. [2022-12-13 12:12:43,231 INFO L137 encePairwiseOnDemand]: 514/516 looper letters, 42 selfloop transitions, 1 changer transitions 1/54 dead transitions. [2022-12-13 12:12:43,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 54 transitions, 453 flow [2022-12-13 12:12:43,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:12:43,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:12:43,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 697 transitions. [2022-12-13 12:12:43,232 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4502583979328165 [2022-12-13 12:12:43,232 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 697 transitions. [2022-12-13 12:12:43,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 697 transitions. [2022-12-13 12:12:43,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:12:43,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 697 transitions. [2022-12-13 12:12:43,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 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 12:12:43,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 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 12:12:43,234 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 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 12:12:43,234 INFO L175 Difference]: Start difference. First operand has 96 places, 107 transitions, 919 flow. Second operand 3 states and 697 transitions. [2022-12-13 12:12:43,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 54 transitions, 453 flow [2022-12-13 12:12:43,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 54 transitions, 271 flow, removed 25 selfloop flow, removed 23 redundant places. [2022-12-13 12:12:43,236 INFO L231 Difference]: Finished difference. Result has 62 places, 46 transitions, 153 flow [2022-12-13 12:12:43,236 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=62, PETRI_TRANSITIONS=46} [2022-12-13 12:12:43,236 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, -25 predicate places. [2022-12-13 12:12:43,236 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 46 transitions, 153 flow [2022-12-13 12:12:43,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 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 12:12:43,236 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:12:43,236 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:12:43,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 (19)] Ended with exit code 0 [2022-12-13 12:12:43,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:43,437 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 12:12:43,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:12:43,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1367255872, now seen corresponding path program 1 times [2022-12-13 12:12:43,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:12:43,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [260182049] [2022-12-13 12:12:43,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:12:43,441 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 12:12:43,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:12:43,442 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:43,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 (20)] Waiting until timeout for monitored process [2022-12-13 12:12:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:12:43,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:12:43,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:12:43,679 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 5 [2022-12-13 12:12:43,701 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 12:12:43,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:12:43,701 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:12:43,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [260182049] [2022-12-13 12:12:43,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [260182049] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:12:43,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:12:43,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:12:43,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507151911] [2022-12-13 12:12:43,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:12:43,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:12:43,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:12:43,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:12:43,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:12:44,057 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 516 [2022-12-13 12:12:44,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 46 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 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 12:12:44,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:12:44,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 516 [2022-12-13 12:12:44,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:12:45,231 INFO L130 PetriNetUnfolder]: 100/247 cut-off events. [2022-12-13 12:12:45,231 INFO L131 PetriNetUnfolder]: For 156/160 co-relation queries the response was YES. [2022-12-13 12:12:45,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 658 conditions, 247 events. 100/247 cut-off events. For 156/160 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 953 event pairs, 53 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 648. Up to 117 conditions per place. [2022-12-13 12:12:45,232 INFO L137 encePairwiseOnDemand]: 507/516 looper letters, 31 selfloop transitions, 10 changer transitions 0/49 dead transitions. [2022-12-13 12:12:45,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 49 transitions, 251 flow [2022-12-13 12:12:45,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:12:45,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:12:45,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 694 transitions. [2022-12-13 12:12:45,234 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4483204134366925 [2022-12-13 12:12:45,234 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 694 transitions. [2022-12-13 12:12:45,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 694 transitions. [2022-12-13 12:12:45,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:12:45,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 694 transitions. [2022-12-13 12:12:45,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 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 12:12:45,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 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 12:12:45,236 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 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 12:12:45,236 INFO L175 Difference]: Start difference. First operand has 62 places, 46 transitions, 153 flow. Second operand 3 states and 694 transitions. [2022-12-13 12:12:45,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 49 transitions, 251 flow [2022-12-13 12:12:45,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 49 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:12:45,237 INFO L231 Difference]: Finished difference. Result has 60 places, 44 transitions, 168 flow [2022-12-13 12:12:45,237 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=60, PETRI_TRANSITIONS=44} [2022-12-13 12:12:45,237 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, -27 predicate places. [2022-12-13 12:12:45,237 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 44 transitions, 168 flow [2022-12-13 12:12:45,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 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 12:12:45,237 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:12:45,237 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:12:45,247 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 (20)] Ended with exit code 0 [2022-12-13 12:12:45,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:45,438 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 12:12:45,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:12:45,439 INFO L85 PathProgramCache]: Analyzing trace with hash 662921711, now seen corresponding path program 1 times [2022-12-13 12:12:45,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:12:45,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478033970] [2022-12-13 12:12:45,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:12:45,442 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 12:12:45,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:12:45,445 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:45,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 (21)] Waiting until timeout for monitored process [2022-12-13 12:12:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:12:45,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 12:12:45,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:12:45,648 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 12:12:45,658 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 12:12:45,658 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:12:45,658 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:12:45,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1478033970] [2022-12-13 12:12:45,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1478033970] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:12:45,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:12:45,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:12:45,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467130096] [2022-12-13 12:12:45,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:12:45,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:12:45,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:12:45,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:12:45,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:12:45,965 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 516 [2022-12-13 12:12:45,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 44 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 218.66666666666666) internal successors, (656), 3 states have internal predecessors, (656), 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 12:12:45,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:12:45,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 516 [2022-12-13 12:12:45,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:12:46,948 INFO L130 PetriNetUnfolder]: 100/241 cut-off events. [2022-12-13 12:12:46,948 INFO L131 PetriNetUnfolder]: For 193/197 co-relation queries the response was YES. [2022-12-13 12:12:46,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 678 conditions, 241 events. 100/241 cut-off events. For 193/197 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 928 event pairs, 53 based on Foata normal form. 1/224 useless extension candidates. Maximal degree in co-relation 668. Up to 117 conditions per place. [2022-12-13 12:12:46,949 INFO L137 encePairwiseOnDemand]: 507/516 looper letters, 31 selfloop transitions, 10 changer transitions 0/47 dead transitions. [2022-12-13 12:12:46,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 47 transitions, 266 flow [2022-12-13 12:12:46,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:12:46,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:12:46,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 685 transitions. [2022-12-13 12:12:46,952 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44250645994832044 [2022-12-13 12:12:46,952 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 685 transitions. [2022-12-13 12:12:46,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 685 transitions. [2022-12-13 12:12:46,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:12:46,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 685 transitions. [2022-12-13 12:12:46,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 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 12:12:46,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 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 12:12:46,955 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 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 12:12:46,955 INFO L175 Difference]: Start difference. First operand has 60 places, 44 transitions, 168 flow. Second operand 3 states and 685 transitions. [2022-12-13 12:12:46,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 47 transitions, 266 flow [2022-12-13 12:12:46,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 47 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:12:46,956 INFO L231 Difference]: Finished difference. Result has 58 places, 42 transitions, 164 flow [2022-12-13 12:12:46,956 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=58, PETRI_TRANSITIONS=42} [2022-12-13 12:12:46,957 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, -29 predicate places. [2022-12-13 12:12:46,957 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 42 transitions, 164 flow [2022-12-13 12:12:46,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.66666666666666) internal successors, (656), 3 states have internal predecessors, (656), 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 12:12:46,957 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:12:46,957 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:12:46,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 (21)] Forceful destruction successful, exit code 0 [2022-12-13 12:12:47,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:47,158 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 12:12:47,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:12:47,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1670145756, now seen corresponding path program 1 times [2022-12-13 12:12:47,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:12:47,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1732269209] [2022-12-13 12:12:47,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:12:47,162 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 12:12:47,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:12:47,164 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:47,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 (22)] Waiting until timeout for monitored process [2022-12-13 12:12:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:12:47,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 12:12:47,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:12:47,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 11 [2022-12-13 12:12:47,516 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 12:12:47,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:12:47,516 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:12:47,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1732269209] [2022-12-13 12:12:47,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1732269209] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:12:47,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:12:47,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:12:47,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858026431] [2022-12-13 12:12:47,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:12:47,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:12:47,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:12:47,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:12:47,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:12:47,556 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 516 [2022-12-13 12:12:47,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 42 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 223.5) internal successors, (894), 4 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:12:47,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:12:47,558 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 516 [2022-12-13 12:12:47,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:12:48,854 INFO L130 PetriNetUnfolder]: 47/157 cut-off events. [2022-12-13 12:12:48,854 INFO L131 PetriNetUnfolder]: For 115/115 co-relation queries the response was YES. [2022-12-13 12:12:48,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 157 events. 47/157 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 528 event pairs, 20 based on Foata normal form. 15/162 useless extension candidates. Maximal degree in co-relation 426. Up to 76 conditions per place. [2022-12-13 12:12:48,855 INFO L137 encePairwiseOnDemand]: 511/516 looper letters, 38 selfloop transitions, 7 changer transitions 0/51 dead transitions. [2022-12-13 12:12:48,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 51 transitions, 289 flow [2022-12-13 12:12:48,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:12:48,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:12:48,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 916 transitions. [2022-12-13 12:12:48,856 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4437984496124031 [2022-12-13 12:12:48,857 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 916 transitions. [2022-12-13 12:12:48,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 916 transitions. [2022-12-13 12:12:48,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:12:48,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 916 transitions. [2022-12-13 12:12:48,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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 12:12:48,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 516.0) internal successors, (2580), 5 states have internal predecessors, (2580), 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 12:12:48,859 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 516.0) internal successors, (2580), 5 states have internal predecessors, (2580), 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 12:12:48,859 INFO L175 Difference]: Start difference. First operand has 58 places, 42 transitions, 164 flow. Second operand 4 states and 916 transitions. [2022-12-13 12:12:48,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 51 transitions, 289 flow [2022-12-13 12:12:48,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 51 transitions, 248 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-12-13 12:12:48,860 INFO L231 Difference]: Finished difference. Result has 57 places, 42 transitions, 143 flow [2022-12-13 12:12:48,860 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2022-12-13 12:12:48,860 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, -30 predicate places. [2022-12-13 12:12:48,860 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 143 flow [2022-12-13 12:12:48,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 223.5) internal successors, (894), 4 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:12:48,861 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:12:48,861 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:12:48,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 (22)] Forceful destruction successful, exit code 0 [2022-12-13 12:12:49,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:49,062 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 12:12:49,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:12:49,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1759159172, now seen corresponding path program 2 times [2022-12-13 12:12:49,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:12:49,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [410656502] [2022-12-13 12:12:49,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:12:49,063 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 12:12:49,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:12:49,064 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:49,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 (23)] Waiting until timeout for monitored process [2022-12-13 12:12:49,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 12:12:49,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:12:49,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-13 12:12:49,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:12:49,452 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 12:12:49,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2022-12-13 12:12:49,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 85 [2022-12-13 12:12:49,783 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 12:12:49,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 12:12:49,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-12-13 12:12:49,955 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 12:12:49,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:12:49,955 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:12:49,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [410656502] [2022-12-13 12:12:49,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [410656502] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:12:49,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:12:49,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:12:49,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731983344] [2022-12-13 12:12:49,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:12:49,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:12:49,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:12:49,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:12:49,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:12:51,715 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 516 [2022-12-13 12:12:51,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 143 flow. Second operand has 7 states, 7 states have (on average 187.71428571428572) internal successors, (1314), 7 states have internal predecessors, (1314), 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 12:12:51,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:12:51,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 516 [2022-12-13 12:12:51,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:12:55,234 INFO L130 PetriNetUnfolder]: 67/211 cut-off events. [2022-12-13 12:12:55,234 INFO L131 PetriNetUnfolder]: For 88/89 co-relation queries the response was YES. [2022-12-13 12:12:55,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 542 conditions, 211 events. 67/211 cut-off events. For 88/89 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 796 event pairs, 17 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 534. Up to 55 conditions per place. [2022-12-13 12:12:55,235 INFO L137 encePairwiseOnDemand]: 500/516 looper letters, 49 selfloop transitions, 23 changer transitions 0/76 dead transitions. [2022-12-13 12:12:55,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 76 transitions, 404 flow [2022-12-13 12:12:55,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:12:55,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 12:12:55,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1180 transitions. [2022-12-13 12:12:55,237 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.38113695090439276 [2022-12-13 12:12:55,237 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1180 transitions. [2022-12-13 12:12:55,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1180 transitions. [2022-12-13 12:12:55,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:12:55,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1180 transitions. [2022-12-13 12:12:55,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 196.66666666666666) internal successors, (1180), 6 states have internal predecessors, (1180), 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 12:12:55,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 516.0) internal successors, (3612), 7 states have internal predecessors, (3612), 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 12:12:55,241 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 516.0) internal successors, (3612), 7 states have internal predecessors, (3612), 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 12:12:55,241 INFO L175 Difference]: Start difference. First operand has 57 places, 42 transitions, 143 flow. Second operand 6 states and 1180 transitions. [2022-12-13 12:12:55,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 76 transitions, 404 flow [2022-12-13 12:12:55,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 76 transitions, 391 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:12:55,242 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 272 flow [2022-12-13 12:12:55,242 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=272, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2022-12-13 12:12:55,242 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, -26 predicate places. [2022-12-13 12:12:55,242 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 272 flow [2022-12-13 12:12:55,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 187.71428571428572) internal successors, (1314), 7 states have internal predecessors, (1314), 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 12:12:55,242 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:12:55,242 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:12:55,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 (23)] Ended with exit code 0 [2022-12-13 12:12:55,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:55,443 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 12:12:55,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:12:55,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1883504041, now seen corresponding path program 1 times [2022-12-13 12:12:55,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:12:55,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2007915077] [2022-12-13 12:12:55,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:12:55,445 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 12:12:55,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:12:55,447 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:12:55,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 (24)] Waiting until timeout for monitored process [2022-12-13 12:12:55,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:12:55,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 67 conjunts are in the unsatisfiable core [2022-12-13 12:12:55,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:12:55,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:55,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:55,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:55,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:55,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:55,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:55,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:55,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 77 [2022-12-13 12:12:55,978 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 12:12:55,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 77 treesize of output 69 [2022-12-13 12:12:55,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:55,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:55,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:55,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:55,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:55,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:55,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:55,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 25 [2022-12-13 12:12:56,068 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-12-13 12:12:56,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2022-12-13 12:12:56,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:56,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 65 [2022-12-13 12:12:56,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:56,646 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:12:56,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:56,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:56,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:56,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:56,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:56,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:56,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:56,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:56,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:56,658 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:12:56,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:56,660 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:12:56,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 95 [2022-12-13 12:12:56,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 85 [2022-12-13 12:12:57,321 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2022-12-13 12:12:57,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2022-12-13 12:12:57,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 75 [2022-12-13 12:12:57,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:57,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:57,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:57,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:57,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:57,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:57,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:57,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:57,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:57,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:57,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:57,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:57,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:57,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:57,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:57,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:12:57,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 121 [2022-12-13 12:12:57,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 233 treesize of output 121 [2022-12-13 12:12:57,954 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 12:12:57,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:12:57,954 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:12:57,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2007915077] [2022-12-13 12:12:57,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2007915077] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:12:57,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:12:57,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 12:12:57,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813222550] [2022-12-13 12:12:57,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:12:57,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 12:12:57,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:12:57,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 12:12:57,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-12-13 12:13:06,254 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 516 [2022-12-13 12:13:06,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 272 flow. Second operand has 12 states, 12 states have (on average 178.75) internal successors, (2145), 12 states have internal predecessors, (2145), 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 12:13:06,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:13:06,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 516 [2022-12-13 12:13:06,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:13:15,322 INFO L130 PetriNetUnfolder]: 145/383 cut-off events. [2022-12-13 12:13:15,322 INFO L131 PetriNetUnfolder]: For 270/270 co-relation queries the response was YES. [2022-12-13 12:13:15,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1099 conditions, 383 events. 145/383 cut-off events. For 270/270 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1747 event pairs, 36 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 1089. Up to 223 conditions per place. [2022-12-13 12:13:15,323 INFO L137 encePairwiseOnDemand]: 498/516 looper letters, 89 selfloop transitions, 33 changer transitions 0/124 dead transitions. [2022-12-13 12:13:15,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 124 transitions, 815 flow [2022-12-13 12:13:15,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 12:13:15,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 12:13:15,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2038 transitions. [2022-12-13 12:13:15,327 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.35905567300916136 [2022-12-13 12:13:15,327 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2038 transitions. [2022-12-13 12:13:15,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2038 transitions. [2022-12-13 12:13:15,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:13:15,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2038 transitions. [2022-12-13 12:13:15,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 185.27272727272728) internal successors, (2038), 11 states have internal predecessors, (2038), 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 12:13:15,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 516.0) internal successors, (6192), 12 states have internal predecessors, (6192), 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 12:13:15,332 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 516.0) internal successors, (6192), 12 states have internal predecessors, (6192), 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 12:13:15,332 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 272 flow. Second operand 11 states and 2038 transitions. [2022-12-13 12:13:15,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 124 transitions, 815 flow [2022-12-13 12:13:15,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 124 transitions, 805 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:13:15,334 INFO L231 Difference]: Finished difference. Result has 77 places, 87 transitions, 591 flow [2022-12-13 12:13:15,334 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=591, PETRI_PLACES=77, PETRI_TRANSITIONS=87} [2022-12-13 12:13:15,334 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, -10 predicate places. [2022-12-13 12:13:15,335 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 87 transitions, 591 flow [2022-12-13 12:13:15,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 178.75) internal successors, (2145), 12 states have internal predecessors, (2145), 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 12:13:15,335 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:13:15,335 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:13:15,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 (24)] Forceful destruction successful, exit code 0 [2022-12-13 12:13:15,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:13:15,536 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 12:13:15,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:13:15,537 INFO L85 PathProgramCache]: Analyzing trace with hash 448783121, now seen corresponding path program 2 times [2022-12-13 12:13:15,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:13:15,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1198102124] [2022-12-13 12:13:15,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:13:15,540 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 12:13:15,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:13:15,541 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:13:15,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 (25)] Waiting until timeout for monitored process [2022-12-13 12:13:16,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 12:13:16,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:13:16,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 66 conjunts are in the unsatisfiable core [2022-12-13 12:13:16,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:13:16,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:16,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:16,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:16,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:16,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:16,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:16,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:16,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 77 [2022-12-13 12:13:16,081 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 12:13:16,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 77 treesize of output 69 [2022-12-13 12:13:16,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:16,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:16,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:16,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:16,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:16,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:16,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:16,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 25 [2022-12-13 12:13:16,166 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-12-13 12:13:16,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2022-12-13 12:13:16,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:16,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 65 [2022-12-13 12:13:16,855 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2022-12-13 12:13:16,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2022-12-13 12:13:17,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:17,027 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:13:17,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:17,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:17,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:17,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:17,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:17,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:17,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:17,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:17,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:17,042 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:13:17,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:17,044 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:13:17,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 95 [2022-12-13 12:13:17,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 85 [2022-12-13 12:13:17,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 75 [2022-12-13 12:13:17,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:17,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:17,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:17,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:17,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:17,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:17,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:17,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:17,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:17,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:17,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:17,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:17,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:17,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:17,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:17,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:17,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 121 [2022-12-13 12:13:17,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 233 treesize of output 121 [2022-12-13 12:13:18,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:13:18,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:13:18,113 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:13:18,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1198102124] [2022-12-13 12:13:18,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1198102124] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:13:18,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:13:18,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 12:13:18,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651574243] [2022-12-13 12:13:18,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:13:18,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 12:13:18,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:13:18,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 12:13:18,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-12-13 12:13:25,633 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 516 [2022-12-13 12:13:25,634 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 87 transitions, 591 flow. Second operand has 12 states, 12 states have (on average 181.75) internal successors, (2181), 12 states have internal predecessors, (2181), 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 12:13:25,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:13:25,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 516 [2022-12-13 12:13:25,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:13:32,097 INFO L130 PetriNetUnfolder]: 170/451 cut-off events. [2022-12-13 12:13:32,097 INFO L131 PetriNetUnfolder]: For 646/646 co-relation queries the response was YES. [2022-12-13 12:13:32,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1612 conditions, 451 events. 170/451 cut-off events. For 646/646 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2226 event pairs, 69 based on Foata normal form. 0/427 useless extension candidates. Maximal degree in co-relation 1595. Up to 357 conditions per place. [2022-12-13 12:13:32,098 INFO L137 encePairwiseOnDemand]: 500/516 looper letters, 103 selfloop transitions, 23 changer transitions 0/128 dead transitions. [2022-12-13 12:13:32,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 128 transitions, 1078 flow [2022-12-13 12:13:32,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 12:13:32,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 12:13:32,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2054 transitions. [2022-12-13 12:13:32,102 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3618745595489782 [2022-12-13 12:13:32,102 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2054 transitions. [2022-12-13 12:13:32,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2054 transitions. [2022-12-13 12:13:32,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:13:32,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2054 transitions. [2022-12-13 12:13:32,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 186.72727272727272) internal successors, (2054), 11 states have internal predecessors, (2054), 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 12:13:32,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 516.0) internal successors, (6192), 12 states have internal predecessors, (6192), 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 12:13:32,108 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 516.0) internal successors, (6192), 12 states have internal predecessors, (6192), 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 12:13:32,108 INFO L175 Difference]: Start difference. First operand has 77 places, 87 transitions, 591 flow. Second operand 11 states and 2054 transitions. [2022-12-13 12:13:32,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 128 transitions, 1078 flow [2022-12-13 12:13:32,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 128 transitions, 1070 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-12-13 12:13:32,111 INFO L231 Difference]: Finished difference. Result has 94 places, 105 transitions, 828 flow [2022-12-13 12:13:32,111 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=828, PETRI_PLACES=94, PETRI_TRANSITIONS=105} [2022-12-13 12:13:32,111 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, 7 predicate places. [2022-12-13 12:13:32,111 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 105 transitions, 828 flow [2022-12-13 12:13:32,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 181.75) internal successors, (2181), 12 states have internal predecessors, (2181), 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 12:13:32,111 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:13:32,112 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:13:32,124 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 (25)] Ended with exit code 0 [2022-12-13 12:13:32,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:13:32,313 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 12:13:32,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:13:32,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1101604177, now seen corresponding path program 1 times [2022-12-13 12:13:32,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:13:32,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767923293] [2022-12-13 12:13:32,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:32,317 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 12:13:32,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:13:32,318 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:13:32,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 (26)] Waiting until timeout for monitored process [2022-12-13 12:13:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:32,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 12:13:32,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:13:32,779 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 12:13:32,841 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-13 12:13:32,841 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 2 case distinctions, treesize of input 19 treesize of output 27 [2022-12-13 12:13:32,918 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 12:13:32,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:13:32,918 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:13:32,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [767923293] [2022-12-13 12:13:32,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [767923293] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:13:32,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:13:32,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 12:13:32,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800114036] [2022-12-13 12:13:32,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:13:32,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:13:32,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:13:32,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:13:32,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:13:33,780 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 516 [2022-12-13 12:13:33,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 105 transitions, 828 flow. Second operand has 6 states, 6 states have (on average 204.16666666666666) internal successors, (1225), 6 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:13:33,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:13:33,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 516 [2022-12-13 12:13:33,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:13:36,328 INFO L130 PetriNetUnfolder]: 147/442 cut-off events. [2022-12-13 12:13:36,329 INFO L131 PetriNetUnfolder]: For 931/942 co-relation queries the response was YES. [2022-12-13 12:13:36,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1686 conditions, 442 events. 147/442 cut-off events. For 931/942 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2427 event pairs, 56 based on Foata normal form. 11/428 useless extension candidates. Maximal degree in co-relation 1661. Up to 158 conditions per place. [2022-12-13 12:13:36,330 INFO L137 encePairwiseOnDemand]: 506/516 looper letters, 61 selfloop transitions, 54 changer transitions 0/128 dead transitions. [2022-12-13 12:13:36,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 128 transitions, 1206 flow [2022-12-13 12:13:36,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:13:36,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:13:36,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1058 transitions. [2022-12-13 12:13:36,332 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41007751937984493 [2022-12-13 12:13:36,332 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1058 transitions. [2022-12-13 12:13:36,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1058 transitions. [2022-12-13 12:13:36,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:13:36,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1058 transitions. [2022-12-13 12:13:36,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 211.6) internal successors, (1058), 5 states have internal predecessors, (1058), 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 12:13:36,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 516.0) internal successors, (3096), 6 states have internal predecessors, (3096), 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 12:13:36,335 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 516.0) internal successors, (3096), 6 states have internal predecessors, (3096), 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 12:13:36,335 INFO L175 Difference]: Start difference. First operand has 94 places, 105 transitions, 828 flow. Second operand 5 states and 1058 transitions. [2022-12-13 12:13:36,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 128 transitions, 1206 flow [2022-12-13 12:13:36,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 128 transitions, 1159 flow, removed 11 selfloop flow, removed 3 redundant places. [2022-12-13 12:13:36,338 INFO L231 Difference]: Finished difference. Result has 94 places, 108 transitions, 930 flow [2022-12-13 12:13:36,339 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=930, PETRI_PLACES=94, PETRI_TRANSITIONS=108} [2022-12-13 12:13:36,339 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, 7 predicate places. [2022-12-13 12:13:36,339 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 108 transitions, 930 flow [2022-12-13 12:13:36,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 204.16666666666666) internal successors, (1225), 6 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:13:36,339 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:13:36,339 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:13:36,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 (26)] Ended with exit code 0 [2022-12-13 12:13:36,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:13:36,540 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 12:13:36,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:13:36,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1263936712, now seen corresponding path program 1 times [2022-12-13 12:13:36,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:13:36,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372680568] [2022-12-13 12:13:36,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:36,545 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 12:13:36,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:13:36,546 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:13:36,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 (27)] Waiting until timeout for monitored process [2022-12-13 12:13:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:36,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 12:13:36,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:13:37,049 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 12:13:37,049 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:13:37,049 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:13:37,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372680568] [2022-12-13 12:13:37,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1372680568] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:13:37,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:13:37,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:13:37,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307930244] [2022-12-13 12:13:37,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:13:37,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:13:37,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:13:37,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:13:37,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:13:37,732 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 516 [2022-12-13 12:13:37,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 108 transitions, 930 flow. Second operand has 5 states, 5 states have (on average 208.8) internal successors, (1044), 5 states have internal predecessors, (1044), 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 12:13:37,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:13:37,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 516 [2022-12-13 12:13:37,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:13:39,283 INFO L130 PetriNetUnfolder]: 168/505 cut-off events. [2022-12-13 12:13:39,283 INFO L131 PetriNetUnfolder]: For 1052/1053 co-relation queries the response was YES. [2022-12-13 12:13:39,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1923 conditions, 505 events. 168/505 cut-off events. For 1052/1053 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2981 event pairs, 17 based on Foata normal form. 6/498 useless extension candidates. Maximal degree in co-relation 1898. Up to 284 conditions per place. [2022-12-13 12:13:39,285 INFO L137 encePairwiseOnDemand]: 503/516 looper letters, 82 selfloop transitions, 26 changer transitions 0/117 dead transitions. [2022-12-13 12:13:39,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 117 transitions, 1132 flow [2022-12-13 12:13:39,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:13:39,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 12:13:39,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1289 transitions. [2022-12-13 12:13:39,287 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.416343669250646 [2022-12-13 12:13:39,287 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1289 transitions. [2022-12-13 12:13:39,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1289 transitions. [2022-12-13 12:13:39,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:13:39,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1289 transitions. [2022-12-13 12:13:39,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 214.83333333333334) internal successors, (1289), 6 states have internal predecessors, (1289), 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 12:13:39,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 516.0) internal successors, (3612), 7 states have internal predecessors, (3612), 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 12:13:39,290 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 516.0) internal successors, (3612), 7 states have internal predecessors, (3612), 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 12:13:39,290 INFO L175 Difference]: Start difference. First operand has 94 places, 108 transitions, 930 flow. Second operand 6 states and 1289 transitions. [2022-12-13 12:13:39,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 117 transitions, 1132 flow [2022-12-13 12:13:39,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 117 transitions, 1049 flow, removed 18 selfloop flow, removed 3 redundant places. [2022-12-13 12:13:39,294 INFO L231 Difference]: Finished difference. Result has 95 places, 95 transitions, 830 flow [2022-12-13 12:13:39,294 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=830, PETRI_PLACES=95, PETRI_TRANSITIONS=95} [2022-12-13 12:13:39,295 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, 8 predicate places. [2022-12-13 12:13:39,295 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 95 transitions, 830 flow [2022-12-13 12:13:39,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 208.8) internal successors, (1044), 5 states have internal predecessors, (1044), 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 12:13:39,295 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:13:39,295 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:13:39,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 (27)] Forceful destruction successful, exit code 0 [2022-12-13 12:13:39,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:13:39,496 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 12:13:39,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:13:39,497 INFO L85 PathProgramCache]: Analyzing trace with hash -820387099, now seen corresponding path program 3 times [2022-12-13 12:13:39,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:13:39,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1291828442] [2022-12-13 12:13:39,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 12:13:39,500 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 12:13:39,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:13:39,503 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:13:39,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 (28)] Waiting until timeout for monitored process [2022-12-13 12:13:39,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-13 12:13:39,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:13:39,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 67 conjunts are in the unsatisfiable core [2022-12-13 12:13:40,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:13:40,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:40,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:40,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:40,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:40,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:40,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:40,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:40,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 77 [2022-12-13 12:13:40,057 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 12:13:40,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 77 treesize of output 69 [2022-12-13 12:13:40,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:40,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:40,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:40,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:40,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:40,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:40,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:40,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 25 [2022-12-13 12:13:40,148 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-12-13 12:13:40,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2022-12-13 12:13:40,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:40,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 65 [2022-12-13 12:13:40,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:40,632 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:13:40,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:40,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:40,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:40,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:40,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:40,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:40,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:40,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:40,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:40,645 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:13:40,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:40,647 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:13:40,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 95 [2022-12-13 12:13:40,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 85 [2022-12-13 12:13:41,202 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2022-12-13 12:13:41,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2022-12-13 12:13:41,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:41,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:41,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:41,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:41,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:41,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:41,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:41,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:41,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:41,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:41,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:41,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:41,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:41,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:41,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:41,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:13:41,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 121 [2022-12-13 12:13:41,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 75 [2022-12-13 12:13:41,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 233 treesize of output 121 [2022-12-13 12:13:41,888 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 12:13:41,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:13:41,889 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:13:41,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1291828442] [2022-12-13 12:13:41,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1291828442] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:13:41,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:13:41,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 12:13:41,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990387255] [2022-12-13 12:13:41,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:13:41,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 12:13:41,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:13:41,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 12:13:41,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-12-13 12:13:51,345 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 516 [2022-12-13 12:13:51,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 95 transitions, 830 flow. Second operand has 12 states, 12 states have (on average 181.75) internal successors, (2181), 12 states have internal predecessors, (2181), 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 12:13:51,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:13:51,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 516 [2022-12-13 12:13:51,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:00,150 INFO L130 PetriNetUnfolder]: 198/578 cut-off events. [2022-12-13 12:14:00,150 INFO L131 PetriNetUnfolder]: For 1759/1759 co-relation queries the response was YES. [2022-12-13 12:14:00,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2366 conditions, 578 events. 198/578 cut-off events. For 1759/1759 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3394 event pairs, 81 based on Foata normal form. 0/570 useless extension candidates. Maximal degree in co-relation 2340. Up to 435 conditions per place. [2022-12-13 12:14:00,152 INFO L137 encePairwiseOnDemand]: 501/516 looper letters, 111 selfloop transitions, 27 changer transitions 0/140 dead transitions. [2022-12-13 12:14:00,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 140 transitions, 1367 flow [2022-12-13 12:14:00,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 12:14:00,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 12:14:00,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2063 transitions. [2022-12-13 12:14:00,154 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3634601832276251 [2022-12-13 12:14:00,154 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2063 transitions. [2022-12-13 12:14:00,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2063 transitions. [2022-12-13 12:14:00,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:14:00,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2063 transitions. [2022-12-13 12:14:00,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 187.54545454545453) internal successors, (2063), 11 states have internal predecessors, (2063), 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 12:14:00,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 516.0) internal successors, (6192), 12 states have internal predecessors, (6192), 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 12:14:00,159 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 516.0) internal successors, (6192), 12 states have internal predecessors, (6192), 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 12:14:00,159 INFO L175 Difference]: Start difference. First operand has 95 places, 95 transitions, 830 flow. Second operand 11 states and 2063 transitions. [2022-12-13 12:14:00,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 140 transitions, 1367 flow [2022-12-13 12:14:00,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 140 transitions, 1329 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-12-13 12:14:00,165 INFO L231 Difference]: Finished difference. Result has 107 places, 108 transitions, 1020 flow [2022-12-13 12:14:00,165 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1020, PETRI_PLACES=107, PETRI_TRANSITIONS=108} [2022-12-13 12:14:00,165 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, 20 predicate places. [2022-12-13 12:14:00,165 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 108 transitions, 1020 flow [2022-12-13 12:14:00,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 181.75) internal successors, (2181), 12 states have internal predecessors, (2181), 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 12:14:00,166 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:14:00,166 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:00,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 (28)] Ended with exit code 0 [2022-12-13 12:14:00,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:14:00,367 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-12-13 12:14:00,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:00,368 INFO L85 PathProgramCache]: Analyzing trace with hash 239005089, now seen corresponding path program 4 times [2022-12-13 12:14:00,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:14:00,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189457677] [2022-12-13 12:14:00,370 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 12:14:00,371 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 12:14:00,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:14:00,373 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 12:14:00,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b919c43-55d2-48bd-8d9e-652e6ea66b0d/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 (29)] Waiting until timeout for monitored process [2022-12-13 12:14:00,823 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 12:14:00,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:14:00,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 66 conjunts are in the unsatisfiable core [2022-12-13 12:14:00,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:14:00,903 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-12-13 12:14:00,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2022-12-13 12:14:00,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:00,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:00,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:00,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:00,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:00,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:00,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:00,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 77 [2022-12-13 12:14:00,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:00,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 65 [2022-12-13 12:14:01,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:01,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 65 [2022-12-13 12:14:01,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:01,540 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:14:01,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:01,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:01,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:01,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:01,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:01,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:01,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:01,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:01,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:01,549 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:14:01,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:01,551 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:14:01,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 95 [2022-12-13 12:14:01,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 85 [2022-12-13 12:14:02,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:02,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:02,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:02,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:02,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:02,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:02,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:02,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:02,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:02,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:02,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:02,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:02,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:02,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:02,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:02,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:02,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 121 [2022-12-13 12:14:02,108 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:14:02,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:02,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:02,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:02,112 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:14:02,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:02,113 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:14:02,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:02,114 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:14:02,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 58 [2022-12-13 12:14:02,230 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2022-12-13 12:14:02,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2022-12-13 12:14:02,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:02,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:02,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:14:02,422 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:14:02,423 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:14:02,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 208 treesize of output 217 [2022-12-13 12:14:02,569 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 12:14:02,569 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:14:02,569 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:14:02,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189457677] [2022-12-13 12:14:02,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [189457677] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:02,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:14:02,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 12:14:02,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820792904] [2022-12-13 12:14:02,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:02,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 12:14:02,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:14:02,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 12:14:02,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-12-13 12:14:11,313 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 516 [2022-12-13 12:14:11,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 108 transitions, 1020 flow. Second operand has 12 states, 12 states have (on average 178.75) internal successors, (2145), 12 states have internal predecessors, (2145), 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 12:14:11,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:14:11,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 516 [2022-12-13 12:14:11,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:12,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers []