./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-races/race-2_2-container_of.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e7fbc69 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_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-races/race-2_2-container_of.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS --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 dbdd132d1a656eb04120c9309772a096548e218c86a32fc06dd93d5ae981c163 --- 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-4e7fbc6 [2022-11-23 03:13:06,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:13:06,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:13:06,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:13:06,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:13:06,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:13:06,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:13:06,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:13:06,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:13:06,577 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:13:06,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:13:06,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:13:06,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:13:06,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:13:06,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:13:06,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:13:06,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:13:06,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:13:06,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:13:06,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:13:06,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:13:06,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:13:06,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:13:06,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:13:06,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:13:06,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:13:06,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:13:06,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:13:06,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:13:06,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:13:06,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:13:06,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:13:06,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:13:06,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:13:06,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:13:06,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:13:06,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:13:06,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:13:06,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:13:06,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:13:06,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:13:06,624 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-23 03:13:06,659 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:13:06,659 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:13:06,660 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:13:06,660 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:13:06,661 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:13:06,661 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:13:06,662 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:13:06,662 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:13:06,662 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:13:06,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:13:06,664 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:13:06,664 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 03:13:06,664 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:13:06,664 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:13:06,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:13:06,665 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 03:13:06,665 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 03:13:06,665 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 03:13:06,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:13:06,666 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 03:13:06,666 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:13:06,666 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:13:06,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:13:06,666 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:13:06,667 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:13:06,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:13:06,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:13:06,667 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:13:06,668 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:13:06,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:13:06,669 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:13:06,669 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:13:06,669 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:13:06,669 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_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbdd132d1a656eb04120c9309772a096548e218c86a32fc06dd93d5ae981c163 [2022-11-23 03:13:06,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:13:06,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:13:06,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:13:06,944 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:13:06,944 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:13:06,945 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/ldv-races/race-2_2-container_of.i [2022-11-23 03:13:10,080 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:13:10,493 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:13:10,494 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/sv-benchmarks/c/ldv-races/race-2_2-container_of.i [2022-11-23 03:13:10,532 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/data/5682a8050/a5fd81640b184de0ad58af13f3ef8266/FLAGc493eead7 [2022-11-23 03:13:10,553 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/data/5682a8050/a5fd81640b184de0ad58af13f3ef8266 [2022-11-23 03:13:10,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:13:10,562 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:13:10,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:13:10,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:13:10,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:13:10,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:13:10" (1/1) ... [2022-11-23 03:13:10,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3518b39f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:10, skipping insertion in model container [2022-11-23 03:13:10,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:13:10" (1/1) ... [2022-11-23 03:13:10,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:13:10,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:13:10,812 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 03:13:11,376 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_d21a8bf8-d842-4015-8c0b-95c136de7ac3/sv-benchmarks/c/ldv-races/race-2_2-container_of.i[75002,75015] [2022-11-23 03:13:11,416 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:13:11,428 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) [2022-11-23 03:13:11,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@105fb2c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:11, skipping insertion in model container [2022-11-23 03:13:11,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:13:11,429 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-23 03:13:11,431 INFO L158 Benchmark]: Toolchain (without parser) took 868.30ms. Allocated memory is still 136.3MB. Free memory was 101.8MB in the beginning and 83.6MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-23 03:13:11,432 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 102.8MB. Free memory is still 51.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:13:11,432 INFO L158 Benchmark]: CACSL2BoogieTranslator took 863.96ms. Allocated memory is still 136.3MB. Free memory was 101.8MB in the beginning and 83.6MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-23 03:13:11,434 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 102.8MB. Free memory is still 51.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 863.96ms. Allocated memory is still 136.3MB. Free memory was 101.8MB in the beginning and 83.6MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1691]: 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_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-races/race-2_2-container_of.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS --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 dbdd132d1a656eb04120c9309772a096548e218c86a32fc06dd93d5ae981c163 --- 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-4e7fbc6 [2022-11-23 03:13:13,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:13:13,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:13:13,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:13:13,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:13:13,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:13:13,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:13:13,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:13:13,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:13:13,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:13:13,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:13:13,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:13:13,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:13:13,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:13:13,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:13:13,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:13:13,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:13:13,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:13:13,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:13:13,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:13:13,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:13:13,893 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:13:13,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:13:13,895 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:13:13,901 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:13:13,906 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:13:13,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:13:13,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:13:13,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:13:13,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:13:13,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:13:13,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:13:13,915 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:13:13,927 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:13:13,928 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:13:13,928 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:13:13,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:13:13,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:13:13,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:13:13,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:13:13,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:13:13,935 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-23 03:13:13,974 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:13:13,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:13:13,976 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:13:13,976 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:13:13,977 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:13:13,977 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:13:13,978 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:13:13,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:13:13,978 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:13:13,979 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:13:13,980 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:13:13,980 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 03:13:13,980 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:13:13,980 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:13:13,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:13:13,981 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 03:13:13,981 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 03:13:13,981 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 03:13:13,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:13:13,981 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 03:13:13,982 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 03:13:13,982 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 03:13:13,982 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:13:13,982 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:13:13,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:13:13,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:13:13,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:13:13,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:13:13,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:13:13,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:13:13,984 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-23 03:13:13,984 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 03:13:13,984 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:13:13,985 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:13:13,985 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:13:13,985 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-23 03:13:13,985 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbdd132d1a656eb04120c9309772a096548e218c86a32fc06dd93d5ae981c163 [2022-11-23 03:13:14,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:13:14,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:13:14,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:13:14,461 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:13:14,462 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:13:14,464 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/ldv-races/race-2_2-container_of.i [2022-11-23 03:13:17,592 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:13:17,967 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:13:17,969 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/sv-benchmarks/c/ldv-races/race-2_2-container_of.i [2022-11-23 03:13:18,023 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/data/5d254f410/3de09a86ac134f53a15f17d9811e3621/FLAGb7d45b4ee [2022-11-23 03:13:18,046 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/data/5d254f410/3de09a86ac134f53a15f17d9811e3621 [2022-11-23 03:13:18,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:13:18,053 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:13:18,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:13:18,055 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:13:18,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:13:18,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:13:18" (1/1) ... [2022-11-23 03:13:18,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c08deea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:18, skipping insertion in model container [2022-11-23 03:13:18,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:13:18" (1/1) ... [2022-11-23 03:13:18,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:13:18,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:13:18,281 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 03:13:18,857 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_d21a8bf8-d842-4015-8c0b-95c136de7ac3/sv-benchmarks/c/ldv-races/race-2_2-container_of.i[75002,75015] [2022-11-23 03:13:18,897 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:13:18,912 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-23 03:13:18,943 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:13:18,947 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 03:13:19,005 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_d21a8bf8-d842-4015-8c0b-95c136de7ac3/sv-benchmarks/c/ldv-races/race-2_2-container_of.i[75002,75015] [2022-11-23 03:13:19,026 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:13:19,040 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:13:19,052 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 03:13:19,103 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_d21a8bf8-d842-4015-8c0b-95c136de7ac3/sv-benchmarks/c/ldv-races/race-2_2-container_of.i[75002,75015] [2022-11-23 03:13:19,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:13:19,306 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:13:19,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:19 WrapperNode [2022-11-23 03:13:19,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:13:19,308 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:13:19,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:13:19,308 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:13:19,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:19" (1/1) ... [2022-11-23 03:13:19,369 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:19" (1/1) ... [2022-11-23 03:13:19,413 INFO L138 Inliner]: procedures = 472, calls = 48, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 113 [2022-11-23 03:13:19,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:13:19,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:13:19,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:13:19,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:13:19,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:19" (1/1) ... [2022-11-23 03:13:19,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:19" (1/1) ... [2022-11-23 03:13:19,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:19" (1/1) ... [2022-11-23 03:13:19,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:19" (1/1) ... [2022-11-23 03:13:19,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:19" (1/1) ... [2022-11-23 03:13:19,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:19" (1/1) ... [2022-11-23 03:13:19,485 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:19" (1/1) ... [2022-11-23 03:13:19,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:19" (1/1) ... [2022-11-23 03:13:19,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:13:19,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:13:19,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:13:19,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:13:19,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:19" (1/1) ... [2022-11-23 03:13:19,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:13:19,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:13:19,553 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:13:19,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:13:19,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 03:13:19,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 03:13:19,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 03:13:19,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-23 03:13:19,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 03:13:19,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:13:19,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 03:13:19,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:13:19,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:13:19,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-23 03:13:19,603 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2022-11-23 03:13:19,603 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2022-11-23 03:13:19,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 03:13:19,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-23 03:13:19,605 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 03:13:20,048 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:13:20,051 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:13:20,700 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:13:20,737 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:13:20,737 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 03:13:20,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:13:20 BoogieIcfgContainer [2022-11-23 03:13:20,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:13:20,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:13:20,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:13:20,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:13:20,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:13:18" (1/3) ... [2022-11-23 03:13:20,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a4bc2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:13:20, skipping insertion in model container [2022-11-23 03:13:20,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:19" (2/3) ... [2022-11-23 03:13:20,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a4bc2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:13:20, skipping insertion in model container [2022-11-23 03:13:20,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:13:20" (3/3) ... [2022-11-23 03:13:20,749 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_2-container_of.i [2022-11-23 03:13:20,768 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:13:20,768 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 39 error locations. [2022-11-23 03:13:20,768 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 03:13:20,875 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-23 03:13:20,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 205 transitions, 426 flow [2022-11-23 03:13:21,011 INFO L130 PetriNetUnfolder]: 8/262 cut-off events. [2022-11-23 03:13:21,011 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-23 03:13:21,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271 conditions, 262 events. 8/262 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 643 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 139. Up to 4 conditions per place. [2022-11-23 03:13:21,018 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 205 transitions, 426 flow [2022-11-23 03:13:21,025 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 203 transitions, 418 flow [2022-11-23 03:13:21,029 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 03:13:21,045 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 203 places, 203 transitions, 418 flow [2022-11-23 03:13:21,048 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 203 places, 203 transitions, 418 flow [2022-11-23 03:13:21,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 203 transitions, 418 flow [2022-11-23 03:13:21,108 INFO L130 PetriNetUnfolder]: 8/262 cut-off events. [2022-11-23 03:13:21,109 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-23 03:13:21,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271 conditions, 262 events. 8/262 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 643 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 139. Up to 4 conditions per place. [2022-11-23 03:13:21,114 INFO L119 LiptonReduction]: Number of co-enabled transitions 5024 [2022-11-23 03:15:07,162 WARN L233 SmtUtils]: Spent 6.37s on a formula simplification. DAG size of input: 112 DAG size of output: 111 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-23 03:15:15,558 WARN L233 SmtUtils]: Spent 5.86s on a formula simplification. DAG size of input: 112 DAG size of output: 111 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-23 03:16:26,243 WARN L233 SmtUtils]: Spent 7.32s on a formula simplification. DAG size of input: 132 DAG size of output: 124 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-23 03:16:35,735 WARN L233 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 132 DAG size of output: 124 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-23 03:17:12,006 WARN L233 SmtUtils]: Spent 32.42s on a formula simplification. DAG size of input: 205 DAG size of output: 204 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-23 03:17:28,611 WARN L233 SmtUtils]: Spent 16.60s on a formula simplification that was a NOOP. DAG size: 198 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-23 03:17:58,924 WARN L233 SmtUtils]: Spent 30.31s on a formula simplification. DAG size of input: 205 DAG size of output: 204 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-23 03:18:13,841 WARN L233 SmtUtils]: Spent 14.91s on a formula simplification that was a NOOP. DAG size: 198 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-23 03:21:02,576 WARN L233 SmtUtils]: Spent 2.81m on a formula simplification. DAG size of input: 251 DAG size of output: 247 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-23 03:22:40,270 WARN L233 SmtUtils]: Spent 1.63m on a formula simplification that was a NOOP. DAG size: 245 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-23 03:25:23,324 WARN L233 SmtUtils]: Spent 2.72m on a formula simplification. DAG size of input: 251 DAG size of output: 247 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-23 03:26:45,587 WARN L233 SmtUtils]: Spent 1.37m on a formula simplification that was a NOOP. DAG size: 245 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-23 03:27:00,782 WARN L233 SmtUtils]: Spent 15.19s on a formula simplification that was a NOOP. DAG size: 208 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-23 03:27:16,134 WARN L233 SmtUtils]: Spent 15.35s on a formula simplification that was a NOOP. DAG size: 208 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-23 03:27:28,362 WARN L233 SmtUtils]: Spent 12.23s on a formula simplification that was a NOOP. DAG size: 208 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-23 03:27:39,773 WARN L233 SmtUtils]: Spent 11.41s on a formula simplification that was a NOOP. DAG size: 208 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-23 03:27:40,105 INFO L134 LiptonReduction]: Checked pairs total: 18270 [2022-11-23 03:27:40,106 INFO L136 LiptonReduction]: Total number of compositions: 234 [2022-11-23 03:27:40,122 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:27:40,126 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;@4db7b9f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:27:40,127 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2022-11-23 03:27:40,129 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-11-23 03:27:40,129 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 03:27:40,129 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:27:40,130 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-23 03:27:40,130 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2022-11-23 03:27:40,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:27:40,136 INFO L85 PathProgramCache]: Analyzing trace with hash 714, now seen corresponding path program 1 times [2022-11-23 03:27:40,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:27:40,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277911536] [2022-11-23 03:27:40,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:27:40,152 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 [2022-11-23 03:27:40,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:27:40,159 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:27:40,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:27:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:27:40,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-23 03:27:40,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:27:40,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:27:40,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:27:40,313 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:27:40,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277911536] [2022-11-23 03:27:40,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1277911536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:27:40,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:27:40,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-23 03:27:40,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604194795] [2022-11-23 03:27:40,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:27:40,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 03:27:40,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:27:40,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 03:27:40,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 03:27:40,372 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 439 [2022-11-23 03:27:40,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 72 transitions, 156 flow. Second operand has 2 states, 2 states have (on average 191.5) internal successors, (383), 2 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:27:40,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:27:40,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 439 [2022-11-23 03:27:40,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:27:41,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 03:27:42,717 INFO L130 PetriNetUnfolder]: 1091/2222 cut-off events. [2022-11-23 03:27:42,718 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-11-23 03:27:42,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4064 conditions, 2222 events. 1091/2222 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 15663 event pairs, 1090 based on Foata normal form. 0/1232 useless extension candidates. Maximal degree in co-relation 3878. Up to 1818 conditions per place. [2022-11-23 03:27:42,735 INFO L137 encePairwiseOnDemand]: 428/439 looper letters, 46 selfloop transitions, 0 changer transitions 0/61 dead transitions. [2022-11-23 03:27:42,736 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 61 transitions, 226 flow [2022-11-23 03:27:42,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 03:27:42,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-23 03:27:42,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 439 transitions. [2022-11-23 03:27:42,762 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5 [2022-11-23 03:27:42,768 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 439 transitions. [2022-11-23 03:27:42,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 439 transitions. [2022-11-23 03:27:42,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:27:42,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 439 transitions. [2022-11-23 03:27:42,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 219.5) internal successors, (439), 2 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:27:42,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 439.0) internal successors, (1317), 3 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:27:42,797 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 439.0) internal successors, (1317), 3 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:27:42,799 INFO L175 Difference]: Start difference. First operand has 76 places, 72 transitions, 156 flow. Second operand 2 states and 439 transitions. [2022-11-23 03:27:42,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 61 transitions, 226 flow [2022-11-23 03:27:42,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 61 transitions, 218 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-23 03:27:42,806 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 126 flow [2022-11-23 03:27:42,808 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=126, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2022-11-23 03:27:42,812 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, -13 predicate places. [2022-11-23 03:27:42,812 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 126 flow [2022-11-23 03:27:42,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 191.5) internal successors, (383), 2 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:27:42,813 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:27:42,814 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-23 03:27:42,831 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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)] Ended with exit code 0 [2022-11-23 03:27:43,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:27:43,027 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2022-11-23 03:27:43,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:27:43,027 INFO L85 PathProgramCache]: Analyzing trace with hash 22977, now seen corresponding path program 1 times [2022-11-23 03:27:43,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:27:43,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [284098040] [2022-11-23 03:27:43,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:27:43,029 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 [2022-11-23 03:27:43,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:27:43,030 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:27:43,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:27:43,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:27:43,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 03:27:43,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:27:43,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:27:43,254 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:27:43,254 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:27:43,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [284098040] [2022-11-23 03:27:43,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [284098040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:27:43,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:27:43,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 03:27:43,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877103182] [2022-11-23 03:27:43,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:27:43,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:27:43,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:27:43,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:27:43,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:27:43,309 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 439 [2022-11-23 03:27:43,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:27:43,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:27:43,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 439 [2022-11-23 03:27:43,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:27:46,619 INFO L130 PetriNetUnfolder]: 1090/2038 cut-off events. [2022-11-23 03:27:46,619 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-23 03:27:46,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3874 conditions, 2038 events. 1090/2038 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 12196 event pairs, 1090 based on Foata normal form. 0/1162 useless extension candidates. Maximal degree in co-relation 3871. Up to 1813 conditions per place. [2022-11-23 03:27:46,633 INFO L137 encePairwiseOnDemand]: 435/439 looper letters, 57 selfloop transitions, 1 changer transitions 1/74 dead transitions. [2022-11-23 03:27:46,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 74 transitions, 270 flow [2022-11-23 03:27:46,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:27:46,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:27:46,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 623 transitions. [2022-11-23 03:27:46,638 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4730447987851177 [2022-11-23 03:27:46,638 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 623 transitions. [2022-11-23 03:27:46,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 623 transitions. [2022-11-23 03:27:46,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:27:46,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 623 transitions. [2022-11-23 03:27:46,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.66666666666666) internal successors, (623), 3 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:27:46,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 439.0) internal successors, (1756), 4 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:27:46,645 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 439.0) internal successors, (1756), 4 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:27:46,645 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 126 flow. Second operand 3 states and 623 transitions. [2022-11-23 03:27:46,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 74 transitions, 270 flow [2022-11-23 03:27:46,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 74 transitions, 270 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 03:27:46,648 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 135 flow [2022-11-23 03:27:46,648 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2022-11-23 03:27:46,649 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, -10 predicate places. [2022-11-23 03:27:46,649 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 135 flow [2022-11-23 03:27:46,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:27:46,650 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:27:46,650 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-23 03:27:46,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-23 03:27:46,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:27:46,865 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2022-11-23 03:27:46,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:27:46,866 INFO L85 PathProgramCache]: Analyzing trace with hash 705702, now seen corresponding path program 1 times [2022-11-23 03:27:46,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:27:46,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417358819] [2022-11-23 03:27:46,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:27:46,867 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 [2022-11-23 03:27:46,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:27:46,868 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:27:46,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:27:47,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:27:47,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 03:27:47,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:27:47,131 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 [2022-11-23 03:27:47,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:27:47,184 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:27:47,184 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:27:47,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1417358819] [2022-11-23 03:27:47,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1417358819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:27:47,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:27:47,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:27:47,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588665773] [2022-11-23 03:27:47,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:27:47,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:27:47,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:27:47,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:27:47,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:27:48,587 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 439 [2022-11-23 03:27:48,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 187.75) internal successors, (751), 4 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:27:48,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:27:48,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 439 [2022-11-23 03:27:48,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:27:51,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 03:27:52,993 INFO L130 PetriNetUnfolder]: 946/1847 cut-off events. [2022-11-23 03:27:52,993 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-11-23 03:27:52,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3567 conditions, 1847 events. 946/1847 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 11081 event pairs, 802 based on Foata normal form. 0/1162 useless extension candidates. Maximal degree in co-relation 3562. Up to 1327 conditions per place. [2022-11-23 03:27:53,009 INFO L137 encePairwiseOnDemand]: 427/439 looper letters, 74 selfloop transitions, 12 changer transitions 0/101 dead transitions. [2022-11-23 03:27:53,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 101 transitions, 387 flow [2022-11-23 03:27:53,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:27:53,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 03:27:53,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1022 transitions. [2022-11-23 03:27:53,014 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46560364464692483 [2022-11-23 03:27:53,014 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1022 transitions. [2022-11-23 03:27:53,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1022 transitions. [2022-11-23 03:27:53,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:27:53,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1022 transitions. [2022-11-23 03:27:53,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 204.4) internal successors, (1022), 5 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:27:53,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 439.0) internal successors, (2634), 6 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:27:53,027 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 439.0) internal successors, (2634), 6 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:27:53,027 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 135 flow. Second operand 5 states and 1022 transitions. [2022-11-23 03:27:53,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 101 transitions, 387 flow [2022-11-23 03:27:53,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 101 transitions, 386 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 03:27:53,031 INFO L231 Difference]: Finished difference. Result has 71 places, 64 transitions, 189 flow [2022-11-23 03:27:53,031 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=189, PETRI_PLACES=71, PETRI_TRANSITIONS=64} [2022-11-23 03:27:53,032 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, -5 predicate places. [2022-11-23 03:27:53,032 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 64 transitions, 189 flow [2022-11-23 03:27:53,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 187.75) internal successors, (751), 4 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:27:53,033 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:27:53,033 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-23 03:27:53,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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)] Forceful destruction successful, exit code 0 [2022-11-23 03:27:53,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:27:53,243 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2022-11-23 03:27:53,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:27:53,244 INFO L85 PathProgramCache]: Analyzing trace with hash 710927, now seen corresponding path program 1 times [2022-11-23 03:27:53,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:27:53,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [327171853] [2022-11-23 03:27:53,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:27:53,245 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 [2022-11-23 03:27:53,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:27:53,246 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:27:53,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:27:53,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:27:53,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 03:27:53,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:27:53,432 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 [2022-11-23 03:27:53,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:27:53,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:27:53,470 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:27:53,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [327171853] [2022-11-23 03:27:53,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [327171853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:27:53,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:27:53,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 03:27:53,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386158101] [2022-11-23 03:27:53,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:27:53,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:27:53,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:27:53,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:27:53,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:27:54,117 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 439 [2022-11-23 03:27:54,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 64 transitions, 189 flow. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:27:54,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:27:54,118 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 439 [2022-11-23 03:27:54,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:27:55,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 03:27:56,883 INFO L130 PetriNetUnfolder]: 946/1996 cut-off events. [2022-11-23 03:27:56,883 INFO L131 PetriNetUnfolder]: For 195/195 co-relation queries the response was YES. [2022-11-23 03:27:56,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3932 conditions, 1996 events. 946/1996 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 13308 event pairs, 820 based on Foata normal form. 0/1347 useless extension candidates. Maximal degree in co-relation 3926. Up to 1354 conditions per place. [2022-11-23 03:27:56,896 INFO L137 encePairwiseOnDemand]: 433/439 looper letters, 50 selfloop transitions, 7 changer transitions 0/71 dead transitions. [2022-11-23 03:27:56,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 71 transitions, 317 flow [2022-11-23 03:27:56,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:27:56,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:27:56,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 578 transitions. [2022-11-23 03:27:56,900 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43887623386484437 [2022-11-23 03:27:56,900 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 578 transitions. [2022-11-23 03:27:56,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 578 transitions. [2022-11-23 03:27:56,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:27:56,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 578 transitions. [2022-11-23 03:27:56,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:27:56,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 439.0) internal successors, (1756), 4 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:27:56,907 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 439.0) internal successors, (1756), 4 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:27:56,907 INFO L175 Difference]: Start difference. First operand has 71 places, 64 transitions, 189 flow. Second operand 3 states and 578 transitions. [2022-11-23 03:27:56,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 71 transitions, 317 flow [2022-11-23 03:27:56,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 71 transitions, 317 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 03:27:56,910 INFO L231 Difference]: Finished difference. Result has 72 places, 63 transitions, 201 flow [2022-11-23 03:27:56,911 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=201, PETRI_PLACES=72, PETRI_TRANSITIONS=63} [2022-11-23 03:27:56,911 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, -4 predicate places. [2022-11-23 03:27:56,912 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 63 transitions, 201 flow [2022-11-23 03:27:56,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:27:56,912 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:27:56,913 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-23 03:27:56,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:27:57,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:27:57,127 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2022-11-23 03:27:57,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:27:57,127 INFO L85 PathProgramCache]: Analyzing trace with hash 710953, now seen corresponding path program 1 times [2022-11-23 03:27:57,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:27:57,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [952439990] [2022-11-23 03:27:57,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:27:57,128 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 [2022-11-23 03:27:57,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:27:57,129 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:27:57,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:27:57,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:27:57,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 03:27:57,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:27:57,320 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 [2022-11-23 03:27:57,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:27:57,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:27:57,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:27:57,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [952439990] [2022-11-23 03:27:57,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [952439990] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:27:57,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:27:57,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 03:27:57,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370314552] [2022-11-23 03:27:57,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:27:57,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:27:57,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:27:57,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:27:57,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:27:58,070 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 439 [2022-11-23 03:27:58,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 63 transitions, 201 flow. Second operand has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:27:58,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:27:58,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 439 [2022-11-23 03:27:58,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:27:59,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 03:28:00,748 INFO L130 PetriNetUnfolder]: 701/1473 cut-off events. [2022-11-23 03:28:00,748 INFO L131 PetriNetUnfolder]: For 226/226 co-relation queries the response was YES. [2022-11-23 03:28:00,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3015 conditions, 1473 events. 701/1473 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9231 event pairs, 403 based on Foata normal form. 31/1101 useless extension candidates. Maximal degree in co-relation 3008. Up to 647 conditions per place. [2022-11-23 03:28:00,755 INFO L137 encePairwiseOnDemand]: 429/439 looper letters, 55 selfloop transitions, 7 changer transitions 0/77 dead transitions. [2022-11-23 03:28:00,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 77 transitions, 355 flow [2022-11-23 03:28:00,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:28:00,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:28:00,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 607 transitions. [2022-11-23 03:28:00,758 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46089597570235386 [2022-11-23 03:28:00,758 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 607 transitions. [2022-11-23 03:28:00,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 607 transitions. [2022-11-23 03:28:00,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:28:00,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 607 transitions. [2022-11-23 03:28:00,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:28:00,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 439.0) internal successors, (1756), 4 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:28:00,764 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 439.0) internal successors, (1756), 4 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:28:00,764 INFO L175 Difference]: Start difference. First operand has 72 places, 63 transitions, 201 flow. Second operand 3 states and 607 transitions. [2022-11-23 03:28:00,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 77 transitions, 355 flow [2022-11-23 03:28:00,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 77 transitions, 341 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 03:28:00,769 INFO L231 Difference]: Finished difference. Result has 73 places, 63 transitions, 216 flow [2022-11-23 03:28:00,769 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=73, PETRI_TRANSITIONS=63} [2022-11-23 03:28:00,770 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, -3 predicate places. [2022-11-23 03:28:00,770 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 63 transitions, 216 flow [2022-11-23 03:28:00,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:28:00,771 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:28:00,771 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-23 03:28:00,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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)] Forceful destruction successful, exit code 0 [2022-11-23 03:28:00,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:28:00,986 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2022-11-23 03:28:00,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:28:00,986 INFO L85 PathProgramCache]: Analyzing trace with hash 705700, now seen corresponding path program 1 times [2022-11-23 03:28:00,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:28:00,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372103618] [2022-11-23 03:28:00,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:28:00,987 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 [2022-11-23 03:28:00,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:28:00,988 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:28:00,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:28:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:28:01,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-23 03:28:01,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:28:01,199 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 [2022-11-23 03:28:01,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:28:01,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:28:01,297 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:28:01,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372103618] [2022-11-23 03:28:01,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1372103618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:28:01,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:28:01,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:28:01,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342553995] [2022-11-23 03:28:01,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:28:01,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:28:01,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:28:01,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:28:01,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:28:02,199 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 439 [2022-11-23 03:28:02,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 63 transitions, 216 flow. Second operand has 4 states, 4 states have (on average 188.75) internal successors, (755), 4 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:28:02,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:28:02,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 439 [2022-11-23 03:28:02,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:28:05,562 INFO L130 PetriNetUnfolder]: 575/1215 cut-off events. [2022-11-23 03:28:05,562 INFO L131 PetriNetUnfolder]: For 230/230 co-relation queries the response was YES. [2022-11-23 03:28:05,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2701 conditions, 1215 events. 575/1215 cut-off events. For 230/230 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7054 event pairs, 421 based on Foata normal form. 64/959 useless extension candidates. Maximal degree in co-relation 2693. Up to 725 conditions per place. [2022-11-23 03:28:05,571 INFO L137 encePairwiseOnDemand]: 432/439 looper letters, 61 selfloop transitions, 6 changer transitions 2/84 dead transitions. [2022-11-23 03:28:05,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 84 transitions, 398 flow [2022-11-23 03:28:05,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:28:05,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 03:28:05,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 821 transitions. [2022-11-23 03:28:05,574 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4675398633257403 [2022-11-23 03:28:05,575 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 821 transitions. [2022-11-23 03:28:05,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 821 transitions. [2022-11-23 03:28:05,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:28:05,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 821 transitions. [2022-11-23 03:28:05,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 205.25) internal successors, (821), 4 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:28:05,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 439.0) internal successors, (2195), 5 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:28:05,582 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 439.0) internal successors, (2195), 5 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:28:05,582 INFO L175 Difference]: Start difference. First operand has 73 places, 63 transitions, 216 flow. Second operand 4 states and 821 transitions. [2022-11-23 03:28:05,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 84 transitions, 398 flow [2022-11-23 03:28:05,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 84 transitions, 391 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 03:28:05,587 INFO L231 Difference]: Finished difference. Result has 76 places, 63 transitions, 227 flow [2022-11-23 03:28:05,587 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=72, 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=4, PETRI_FLOW=227, PETRI_PLACES=76, PETRI_TRANSITIONS=63} [2022-11-23 03:28:05,588 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 0 predicate places. [2022-11-23 03:28:05,588 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 63 transitions, 227 flow [2022-11-23 03:28:05,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 188.75) internal successors, (755), 4 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:28:05,588 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:28:05,588 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-23 03:28:05,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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)] Forceful destruction successful, exit code 0 [2022-11-23 03:28:05,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:28:05,803 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2022-11-23 03:28:05,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:28:05,804 INFO L85 PathProgramCache]: Analyzing trace with hash 705683, now seen corresponding path program 1 times [2022-11-23 03:28:05,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:28:05,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1189892790] [2022-11-23 03:28:05,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:28:05,805 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 [2022-11-23 03:28:05,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:28:05,806 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:28:05,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:28:06,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:28:06,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 03:28:06,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:28:06,113 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-23 03:28:06,113 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 [2022-11-23 03:28:06,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:28:06,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:28:06,180 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:28:06,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1189892790] [2022-11-23 03:28:06,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1189892790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:28:06,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:28:06,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 03:28:06,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580039542] [2022-11-23 03:28:06,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:28:06,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:28:06,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:28:06,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:28:06,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:28:06,823 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 439 [2022-11-23 03:28:06,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 63 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:28:06,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:28:06,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 439 [2022-11-23 03:28:06,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:28:08,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 03:28:09,348 INFO L130 PetriNetUnfolder]: 567/1238 cut-off events. [2022-11-23 03:28:09,349 INFO L131 PetriNetUnfolder]: For 317/317 co-relation queries the response was YES. [2022-11-23 03:28:09,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2774 conditions, 1238 events. 567/1238 cut-off events. For 317/317 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 7631 event pairs, 463 based on Foata normal form. 0/896 useless extension candidates. Maximal degree in co-relation 2765. Up to 766 conditions per place. [2022-11-23 03:28:09,355 INFO L137 encePairwiseOnDemand]: 428/439 looper letters, 48 selfloop transitions, 10 changer transitions 0/73 dead transitions. [2022-11-23 03:28:09,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 73 transitions, 363 flow [2022-11-23 03:28:09,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:28:09,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:28:09,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 620 transitions. [2022-11-23 03:28:09,358 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47076689445709946 [2022-11-23 03:28:09,358 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 620 transitions. [2022-11-23 03:28:09,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 620 transitions. [2022-11-23 03:28:09,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:28:09,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 620 transitions. [2022-11-23 03:28:09,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:28:09,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 439.0) internal successors, (1756), 4 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:28:09,363 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 439.0) internal successors, (1756), 4 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:28:09,364 INFO L175 Difference]: Start difference. First operand has 76 places, 63 transitions, 227 flow. Second operand 3 states and 620 transitions. [2022-11-23 03:28:09,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 73 transitions, 363 flow [2022-11-23 03:28:09,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 73 transitions, 348 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-11-23 03:28:09,368 INFO L231 Difference]: Finished difference. Result has 73 places, 61 transitions, 228 flow [2022-11-23 03:28:09,368 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=73, PETRI_TRANSITIONS=61} [2022-11-23 03:28:09,369 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, -3 predicate places. [2022-11-23 03:28:09,369 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 228 flow [2022-11-23 03:28:09,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:28:09,370 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:28:09,370 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-23 03:28:09,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-23 03:28:09,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:28:09,586 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2022-11-23 03:28:09,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:28:09,586 INFO L85 PathProgramCache]: Analyzing trace with hash 705682, now seen corresponding path program 1 times [2022-11-23 03:28:09,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:28:09,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1791197097] [2022-11-23 03:28:09,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:28:09,587 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 [2022-11-23 03:28:09,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:28:09,588 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:28:09,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:28:09,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:28:09,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 03:28:09,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:28:09,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 03:28:09,848 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 [2022-11-23 03:28:09,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:28:09,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:28:09,937 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:28:09,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1791197097] [2022-11-23 03:28:09,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1791197097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:28:09,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:28:09,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 03:28:09,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463351176] [2022-11-23 03:28:09,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:28:09,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:28:09,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:28:09,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:28:09,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:28:10,557 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 439 [2022-11-23 03:28:10,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 61 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:28:10,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:28:10,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 439 [2022-11-23 03:28:10,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:28:11,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 03:28:12,714 INFO L130 PetriNetUnfolder]: 559/1216 cut-off events. [2022-11-23 03:28:12,714 INFO L131 PetriNetUnfolder]: For 328/328 co-relation queries the response was YES. [2022-11-23 03:28:12,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2619 conditions, 1216 events. 559/1216 cut-off events. For 328/328 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7458 event pairs, 559 based on Foata normal form. 0/887 useless extension candidates. Maximal degree in co-relation 2611. Up to 991 conditions per place. [2022-11-23 03:28:12,721 INFO L137 encePairwiseOnDemand]: 435/439 looper letters, 42 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2022-11-23 03:28:12,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 59 transitions, 312 flow [2022-11-23 03:28:12,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:28:12,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:28:12,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 607 transitions. [2022-11-23 03:28:12,725 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46089597570235386 [2022-11-23 03:28:12,726 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 607 transitions. [2022-11-23 03:28:12,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 607 transitions. [2022-11-23 03:28:12,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:28:12,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 607 transitions. [2022-11-23 03:28:12,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:28:12,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 439.0) internal successors, (1756), 4 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:28:12,730 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 439.0) internal successors, (1756), 4 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:28:12,731 INFO L175 Difference]: Start difference. First operand has 73 places, 61 transitions, 228 flow. Second operand 3 states and 607 transitions. [2022-11-23 03:28:12,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 59 transitions, 312 flow [2022-11-23 03:28:12,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 59 transitions, 292 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 03:28:12,734 INFO L231 Difference]: Finished difference. Result has 71 places, 59 transitions, 208 flow [2022-11-23 03:28:12,734 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=71, PETRI_TRANSITIONS=59} [2022-11-23 03:28:12,734 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, -5 predicate places. [2022-11-23 03:28:12,735 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 59 transitions, 208 flow [2022-11-23 03:28:12,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:28:12,735 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:28:12,735 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-23 03:28:12,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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)] Forceful destruction successful, exit code 0 [2022-11-23 03:28:12,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:28:12,951 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2022-11-23 03:28:12,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:28:12,951 INFO L85 PathProgramCache]: Analyzing trace with hash 21877176, now seen corresponding path program 1 times [2022-11-23 03:28:12,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:28:12,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672162070] [2022-11-23 03:28:12,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:28:12,952 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 [2022-11-23 03:28:12,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:28:12,953 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:28:12,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:28:13,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:28:13,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-23 03:28:13,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:28:13,157 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 [2022-11-23 03:28:13,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:28:13,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:28:13,322 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:28:13,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672162070] [2022-11-23 03:28:13,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672162070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:28:13,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:28:13,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:28:13,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959290504] [2022-11-23 03:28:13,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:28:13,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:28:13,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:28:13,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:28:13,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:28:15,676 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 439 [2022-11-23 03:28:15,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 59 transitions, 208 flow. Second operand has 5 states, 5 states have (on average 183.8) internal successors, (919), 5 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:28:15,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:28:15,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 439 [2022-11-23 03:28:15,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:28:17,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 03:28:20,072 INFO L130 PetriNetUnfolder]: 589/1262 cut-off events. [2022-11-23 03:28:20,072 INFO L131 PetriNetUnfolder]: For 269/269 co-relation queries the response was YES. [2022-11-23 03:28:20,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2700 conditions, 1262 events. 589/1262 cut-off events. For 269/269 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8013 event pairs, 69 based on Foata normal form. 0/963 useless extension candidates. Maximal degree in co-relation 2692. Up to 604 conditions per place. [2022-11-23 03:28:20,077 INFO L137 encePairwiseOnDemand]: 429/439 looper letters, 72 selfloop transitions, 12 changer transitions 2/99 dead transitions. [2022-11-23 03:28:20,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 99 transitions, 481 flow [2022-11-23 03:28:20,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:28:20,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 03:28:20,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1002 transitions. [2022-11-23 03:28:20,081 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45649202733485195 [2022-11-23 03:28:20,081 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1002 transitions. [2022-11-23 03:28:20,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1002 transitions. [2022-11-23 03:28:20,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:28:20,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1002 transitions. [2022-11-23 03:28:20,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 200.4) internal successors, (1002), 5 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:28:20,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 439.0) internal successors, (2634), 6 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:28:20,089 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 439.0) internal successors, (2634), 6 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:28:20,089 INFO L175 Difference]: Start difference. First operand has 71 places, 59 transitions, 208 flow. Second operand 5 states and 1002 transitions. [2022-11-23 03:28:20,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 99 transitions, 481 flow [2022-11-23 03:28:20,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 99 transitions, 479 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 03:28:20,092 INFO L231 Difference]: Finished difference. Result has 76 places, 63 transitions, 271 flow [2022-11-23 03:28:20,092 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=271, PETRI_PLACES=76, PETRI_TRANSITIONS=63} [2022-11-23 03:28:20,093 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 0 predicate places. [2022-11-23 03:28:20,093 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 63 transitions, 271 flow [2022-11-23 03:28:20,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 183.8) internal successors, (919), 5 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:28:20,094 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:28:20,094 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-23 03:28:20,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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)] Forceful destruction successful, exit code 0 [2022-11-23 03:28:20,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:28:20,309 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting my_callbackErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2022-11-23 03:28:20,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:28:20,309 INFO L85 PathProgramCache]: Analyzing trace with hash 21877175, now seen corresponding path program 1 times [2022-11-23 03:28:20,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:28:20,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798608819] [2022-11-23 03:28:20,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:28:20,310 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 [2022-11-23 03:28:20,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:28:20,312 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:28:20,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:28:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:28:20,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 03:28:20,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:28:20,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:28:20,552 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:28:20,552 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:28:20,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798608819] [2022-11-23 03:28:20,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1798608819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:28:20,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:28:20,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:28:20,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495615961] [2022-11-23 03:28:20,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:28:20,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:28:20,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:28:20,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:28:20,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:28:21,131 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 439 [2022-11-23 03:28:21,132 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 63 transitions, 271 flow. Second operand has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:28:21,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:28:21,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 439 [2022-11-23 03:28:21,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:28:23,906 INFO L130 PetriNetUnfolder]: 611/1219 cut-off events. [2022-11-23 03:28:23,907 INFO L131 PetriNetUnfolder]: For 687/687 co-relation queries the response was YES. [2022-11-23 03:28:23,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3042 conditions, 1219 events. 611/1219 cut-off events. For 687/687 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7211 event pairs, 189 based on Foata normal form. 0/918 useless extension candidates. Maximal degree in co-relation 3032. Up to 741 conditions per place. [2022-11-23 03:28:23,919 INFO L137 encePairwiseOnDemand]: 427/439 looper letters, 56 selfloop transitions, 12 changer transitions 0/81 dead transitions. [2022-11-23 03:28:23,919 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 81 transitions, 450 flow [2022-11-23 03:28:23,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:28:23,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:28:23,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 612 transitions. [2022-11-23 03:28:23,923 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4646924829157175 [2022-11-23 03:28:23,923 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 612 transitions. [2022-11-23 03:28:23,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 612 transitions. [2022-11-23 03:28:23,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:28:23,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 612 transitions. [2022-11-23 03:28:23,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:28:23,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 439.0) internal successors, (1756), 4 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:28:23,928 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 439.0) internal successors, (1756), 4 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:28:23,928 INFO L175 Difference]: Start difference. First operand has 76 places, 63 transitions, 271 flow. Second operand 3 states and 612 transitions. [2022-11-23 03:28:23,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 81 transitions, 450 flow [2022-11-23 03:28:23,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 81 transitions, 432 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-23 03:28:23,937 INFO L231 Difference]: Finished difference. Result has 77 places, 66 transitions, 323 flow [2022-11-23 03:28:23,938 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=323, PETRI_PLACES=77, PETRI_TRANSITIONS=66} [2022-11-23 03:28:23,939 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1 predicate places. [2022-11-23 03:28:23,939 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 66 transitions, 323 flow [2022-11-23 03:28:23,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:28:23,940 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:28:23,940 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 03:28:23,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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)] Forceful destruction successful, exit code 0 [2022-11-23 03:28:24,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:28:24,160 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2022-11-23 03:28:24,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:28:24,160 INFO L85 PathProgramCache]: Analyzing trace with hash 678176983, now seen corresponding path program 1 times [2022-11-23 03:28:24,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:28:24,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [164318847] [2022-11-23 03:28:24,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:28:24,161 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 [2022-11-23 03:28:24,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:28:24,162 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:28:24,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21a8bf8-d842-4015-8c0b-95c136de7ac3/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:28:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:28:24,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 03:28:24,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:28:24,361 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 [2022-11-23 03:28:24,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:28:24,438 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:28:24,438 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:28:24,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [164318847] [2022-11-23 03:28:24,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [164318847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:28:24,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:28:24,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:28:24,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447474279] [2022-11-23 03:28:24,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:28:24,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:28:24,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:28:24,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:28:24,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12