./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b6872adb14a2dfa535a444bb6d903bd37f60f26cf718935f2927b47d5c5a6aaa --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 16:53:42,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:53:42,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:53:42,873 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:53:42,873 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:53:42,874 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:53:42,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:53:42,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:53:42,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:53:42,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:53:42,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:53:42,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:53:42,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:53:42,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:53:42,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:53:42,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:53:42,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:53:42,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:53:42,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:53:42,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:53:42,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:53:42,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:53:42,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:53:42,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:53:42,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:53:42,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:53:42,892 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:53:42,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:53:42,893 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:53:42,894 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:53:42,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:53:42,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:53:42,895 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:53:42,896 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:53:42,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:53:42,897 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:53:42,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:53:42,898 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:53:42,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:53:42,899 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:53:42,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:53:42,901 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 16:53:42,922 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:53:42,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:53:42,923 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:53:42,923 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:53:42,924 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 16:53:42,924 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 16:53:42,925 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:53:42,925 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:53:42,925 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:53:42,925 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:53:42,925 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 16:53:42,926 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 16:53:42,926 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 16:53:42,926 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 16:53:42,926 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:53:42,926 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 16:53:42,926 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 16:53:42,927 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 16:53:42,927 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 16:53:42,927 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 16:53:42,927 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 16:53:42,927 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:53:42,928 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:53:42,928 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:53:42,928 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 16:53:42,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:53:42,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:53:42,929 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 16:53:42,929 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 16:53:42,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 16:53:42,929 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 16:53:42,929 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 16:53:42,929 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 16:53:42,930 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 16:53:42,930 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_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6872adb14a2dfa535a444bb6d903bd37f60f26cf718935f2927b47d5c5a6aaa [2022-12-13 16:53:43,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:53:43,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:53:43,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:53:43,127 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:53:43,128 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:53:43,128 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2022-12-13 16:53:45,742 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:53:45,902 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:53:45,903 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2022-12-13 16:53:45,909 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/data/604de3234/884d6dc1ffbf42efacfd983df3abdcc6/FLAGd39b44d31 [2022-12-13 16:53:45,921 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/data/604de3234/884d6dc1ffbf42efacfd983df3abdcc6 [2022-12-13 16:53:45,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:53:45,924 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:53:45,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:53:45,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:53:45,927 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:53:45,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:53:45" (1/1) ... [2022-12-13 16:53:45,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36f652ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:53:45, skipping insertion in model container [2022-12-13 16:53:45,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:53:45" (1/1) ... [2022-12-13 16:53:45,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:53:45,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:53:46,072 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:46,073 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:46,075 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:46,077 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:46,079 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:46,080 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:46,080 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:46,081 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:46,082 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:46,083 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:46,090 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_f1f5353e-f10b-4afc-a09f-ea18f6854136/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c[3042,3055] [2022-12-13 16:53:46,098 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:53:46,109 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-12-13 16:53:46,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3f65ee55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:53:46, skipping insertion in model container [2022-12-13 16:53:46,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:53:46,110 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-13 16:53:46,111 INFO L158 Benchmark]: Toolchain (without parser) took 186.69ms. Allocated memory is still 163.6MB. Free memory was 132.8MB in the beginning and 122.2MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 16:53:46,111 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 163.6MB. Free memory is still 137.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 16:53:46,112 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.14ms. Allocated memory is still 163.6MB. Free memory was 132.7MB in the beginning and 122.5MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 16:53:46,113 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 163.6MB. Free memory is still 137.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 185.14ms. Allocated memory is still 163.6MB. Free memory was 132.7MB in the beginning and 122.5MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 119]: 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b6872adb14a2dfa535a444bb6d903bd37f60f26cf718935f2927b47d5c5a6aaa --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 16:53:47,687 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:53:47,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:53:47,708 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:53:47,708 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:53:47,709 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:53:47,711 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:53:47,712 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:53:47,714 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:53:47,715 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:53:47,715 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:53:47,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:53:47,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:53:47,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:53:47,719 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:53:47,720 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:53:47,721 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:53:47,722 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:53:47,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:53:47,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:53:47,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:53:47,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:53:47,729 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:53:47,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:53:47,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:53:47,733 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:53:47,733 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:53:47,734 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:53:47,735 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:53:47,735 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:53:47,735 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:53:47,736 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:53:47,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:53:47,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:53:47,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:53:47,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:53:47,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:53:47,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:53:47,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:53:47,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:53:47,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:53:47,750 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-12-13 16:53:47,770 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:53:47,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:53:47,771 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:53:47,771 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:53:47,771 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 16:53:47,772 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 16:53:47,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:53:47,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:53:47,772 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:53:47,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:53:47,772 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 16:53:47,773 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 16:53:47,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 16:53:47,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 16:53:47,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:53:47,773 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 16:53:47,773 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 16:53:47,774 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 16:53:47,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 16:53:47,774 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 16:53:47,774 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 16:53:47,774 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 16:53:47,774 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 16:53:47,774 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:53:47,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:53:47,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:53:47,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 16:53:47,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:53:47,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:53:47,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 16:53:47,775 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 16:53:47,775 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 16:53:47,776 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 16:53:47,776 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 16:53:47,776 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 16:53:47,776 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 16:53:47,776 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 16:53:47,776 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_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6872adb14a2dfa535a444bb6d903bd37f60f26cf718935f2927b47d5c5a6aaa [2022-12-13 16:53:48,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:53:48,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:53:48,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:53:48,031 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:53:48,031 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:53:48,032 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2022-12-13 16:53:50,653 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:53:50,784 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:53:50,784 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2022-12-13 16:53:50,794 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/data/67ac557c2/f585de847e304f1ea16a2463c142b8a3/FLAG3c57ee117 [2022-12-13 16:53:50,805 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/data/67ac557c2/f585de847e304f1ea16a2463c142b8a3 [2022-12-13 16:53:50,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:53:50,808 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:53:50,809 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:53:50,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:53:50,813 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:53:50,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:53:50" (1/1) ... [2022-12-13 16:53:50,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@603a0234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:53:50, skipping insertion in model container [2022-12-13 16:53:50,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:53:50" (1/1) ... [2022-12-13 16:53:50,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:53:50,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:53:50,976 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:50,977 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:50,979 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:50,981 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:50,984 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:50,985 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:50,986 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:50,987 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:50,988 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:50,989 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:50,997 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_f1f5353e-f10b-4afc-a09f-ea18f6854136/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c[3042,3055] [2022-12-13 16:53:51,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:53:51,020 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-13 16:53:51,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:53:51,030 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:51,030 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:51,031 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:51,032 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:51,033 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:51,034 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:51,034 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:51,036 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:51,036 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:51,037 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:51,041 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_f1f5353e-f10b-4afc-a09f-ea18f6854136/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c[3042,3055] [2022-12-13 16:53:51,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:53:51,050 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 16:53:51,064 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:51,065 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:51,065 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:51,066 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:51,067 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:51,068 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:51,068 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:51,069 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:51,069 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:51,070 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:51,075 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_f1f5353e-f10b-4afc-a09f-ea18f6854136/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c[3042,3055] [2022-12-13 16:53:51,078 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:53:51,094 INFO L208 MainTranslator]: Completed translation [2022-12-13 16:53:51,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:53:51 WrapperNode [2022-12-13 16:53:51,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:53:51,096 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 16:53:51,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 16:53:51,096 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 16:53:51,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:53:51" (1/1) ... [2022-12-13 16:53:51,113 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:53:51" (1/1) ... [2022-12-13 16:53:51,137 INFO L138 Inliner]: procedures = 28, calls = 50, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 176 [2022-12-13 16:53:51,137 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 16:53:51,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 16:53:51,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 16:53:51,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 16:53:51,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:53:51" (1/1) ... [2022-12-13 16:53:51,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:53:51" (1/1) ... [2022-12-13 16:53:51,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:53:51" (1/1) ... [2022-12-13 16:53:51,154 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:53:51" (1/1) ... [2022-12-13 16:53:51,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:53:51" (1/1) ... [2022-12-13 16:53:51,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:53:51" (1/1) ... [2022-12-13 16:53:51,167 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:53:51" (1/1) ... [2022-12-13 16:53:51,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:53:51" (1/1) ... [2022-12-13 16:53:51,172 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 16:53:51,173 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 16:53:51,173 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 16:53:51,173 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 16:53:51,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:53:51" (1/1) ... [2022-12-13 16:53:51,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:53:51,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:53:51,201 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 16:53:51,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 16:53:51,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 16:53:51,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 16:53:51,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 16:53:51,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-13 16:53:51,234 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 16:53:51,234 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 16:53:51,234 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 16:53:51,234 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 16:53:51,235 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 16:53:51,235 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 16:53:51,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 16:53:51,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 16:53:51,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 16:53:51,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 16:53:51,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 16:53:51,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 16:53:51,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-13 16:53:51,237 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 16:53:51,322 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 16:53:51,324 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 16:53:51,731 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 16:53:51,829 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 16:53:51,829 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 16:53:51,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:53:51 BoogieIcfgContainer [2022-12-13 16:53:51,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 16:53:51,833 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 16:53:51,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 16:53:51,835 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 16:53:51,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:53:50" (1/3) ... [2022-12-13 16:53:51,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8217f0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:53:51, skipping insertion in model container [2022-12-13 16:53:51,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:53:51" (2/3) ... [2022-12-13 16:53:51,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8217f0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:53:51, skipping insertion in model container [2022-12-13 16:53:51,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:53:51" (3/3) ... [2022-12-13 16:53:51,838 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-multiply-verify.wvr.c [2022-12-13 16:53:51,852 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 16:53:51,852 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2022-12-13 16:53:51,852 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 16:53:51,914 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 16:53:51,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 177 transitions, 378 flow [2022-12-13 16:53:51,993 INFO L130 PetriNetUnfolder]: 9/174 cut-off events. [2022-12-13 16:53:51,993 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 16:53:51,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 174 events. 9/174 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 191 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 125. Up to 2 conditions per place. [2022-12-13 16:53:51,997 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 177 transitions, 378 flow [2022-12-13 16:53:52,001 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 169 transitions, 356 flow [2022-12-13 16:53:52,003 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 16:53:52,012 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 169 transitions, 356 flow [2022-12-13 16:53:52,015 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 169 transitions, 356 flow [2022-12-13 16:53:52,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 169 transitions, 356 flow [2022-12-13 16:53:52,052 INFO L130 PetriNetUnfolder]: 9/169 cut-off events. [2022-12-13 16:53:52,053 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 16:53:52,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 169 events. 9/169 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 188 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 125. Up to 2 conditions per place. [2022-12-13 16:53:52,056 INFO L119 LiptonReduction]: Number of co-enabled transitions 2516 [2022-12-13 16:54:12,753 INFO L134 LiptonReduction]: Checked pairs total: 2987 [2022-12-13 16:54:12,753 INFO L136 LiptonReduction]: Total number of compositions: 169 [2022-12-13 16:54:12,763 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:54:12,770 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;@45b33c5b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:54:12,770 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2022-12-13 16:54:12,772 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 16:54:12,772 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:54:12,773 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:54:12,773 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 16:54:12,774 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 16:54:12,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:54:12,778 INFO L85 PathProgramCache]: Analyzing trace with hash 24693, now seen corresponding path program 1 times [2022-12-13 16:54:12,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:54:12,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [693726407] [2022-12-13 16:54:12,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:12,791 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:12,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:54:12,792 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:54:12,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-13 16:54:12,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:12,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 16:54:12,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:54:12,974 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-12-13 16:54:12,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-12-13 16:54:13,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:54:13,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:54:13,002 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:54:13,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [693726407] [2022-12-13 16:54:13,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [693726407] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:54:13,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:54:13,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:54:13,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602752500] [2022-12-13 16:54:13,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:54:13,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:54:13,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:54:13,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:54:13,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:54:13,158 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 346 [2022-12-13 16:54:13,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:13,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:54:13,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 346 [2022-12-13 16:54:13,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:54:13,571 INFO L130 PetriNetUnfolder]: 1693/2440 cut-off events. [2022-12-13 16:54:13,571 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-12-13 16:54:13,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4978 conditions, 2440 events. 1693/2440 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 10446 event pairs, 1428 based on Foata normal form. 0/902 useless extension candidates. Maximal degree in co-relation 4290. Up to 2440 conditions per place. [2022-12-13 16:54:13,587 INFO L137 encePairwiseOnDemand]: 342/346 looper letters, 41 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2022-12-13 16:54:13,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 42 transitions, 186 flow [2022-12-13 16:54:13,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:54:13,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:54:13,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 495 transitions. [2022-12-13 16:54:13,600 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.476878612716763 [2022-12-13 16:54:13,601 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 495 transitions. [2022-12-13 16:54:13,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 495 transitions. [2022-12-13 16:54:13,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:54:13,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 495 transitions. [2022-12-13 16:54:13,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:13,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:13,614 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:13,615 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 108 flow. Second operand 3 states and 495 transitions. [2022-12-13 16:54:13,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 42 transitions, 186 flow [2022-12-13 16:54:13,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 42 transitions, 174 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-13 16:54:13,623 INFO L231 Difference]: Finished difference. Result has 45 places, 42 transitions, 92 flow [2022-12-13 16:54:13,624 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=45, PETRI_TRANSITIONS=42} [2022-12-13 16:54:13,627 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, -7 predicate places. [2022-12-13 16:54:13,627 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 42 transitions, 92 flow [2022-12-13 16:54:13,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:13,628 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:54:13,628 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 16:54:13,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-13 16:54:13,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:13,829 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 16:54:13,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:54:13,830 INFO L85 PathProgramCache]: Analyzing trace with hash 24783, now seen corresponding path program 1 times [2022-12-13 16:54:13,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:54:13,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1303508295] [2022-12-13 16:54:13,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:13,832 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:13,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:54:13,866 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:54:13,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-13 16:54:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:14,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 16:54:14,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:54:14,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:54:14,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:54:14,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:54:14,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:54:14,166 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-12-13 16:54:14,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 29 [2022-12-13 16:54:14,194 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-12-13 16:54:14,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-12-13 16:54:14,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:54:14,247 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:54:14,247 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:54:14,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1303508295] [2022-12-13 16:54:14,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1303508295] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:54:14,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:54:14,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:54:14,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58339020] [2022-12-13 16:54:14,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:54:14,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:54:14,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:54:14,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:54:14,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:54:14,420 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 346 [2022-12-13 16:54:14,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 42 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:14,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:54:14,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 346 [2022-12-13 16:54:14,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:54:14,843 INFO L130 PetriNetUnfolder]: 1343/1964 cut-off events. [2022-12-13 16:54:14,843 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:54:14,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3963 conditions, 1964 events. 1343/1964 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8183 event pairs, 1128 based on Foata normal form. 0/777 useless extension candidates. Maximal degree in co-relation 3957. Up to 1964 conditions per place. [2022-12-13 16:54:14,850 INFO L137 encePairwiseOnDemand]: 343/346 looper letters, 39 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2022-12-13 16:54:14,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 40 transitions, 168 flow [2022-12-13 16:54:14,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:54:14,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:54:14,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 495 transitions. [2022-12-13 16:54:14,853 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.476878612716763 [2022-12-13 16:54:14,853 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 495 transitions. [2022-12-13 16:54:14,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 495 transitions. [2022-12-13 16:54:14,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:54:14,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 495 transitions. [2022-12-13 16:54:14,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:14,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:14,856 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:14,856 INFO L175 Difference]: Start difference. First operand has 45 places, 42 transitions, 92 flow. Second operand 3 states and 495 transitions. [2022-12-13 16:54:14,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 40 transitions, 168 flow [2022-12-13 16:54:14,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 40 transitions, 167 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:54:14,857 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 89 flow [2022-12-13 16:54:14,857 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2022-12-13 16:54:14,858 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, -8 predicate places. [2022-12-13 16:54:14,858 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 89 flow [2022-12-13 16:54:14,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:14,858 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:54:14,858 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 16:54:14,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-13 16:54:15,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:15,059 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 16:54:15,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:54:15,060 INFO L85 PathProgramCache]: Analyzing trace with hash 24784, now seen corresponding path program 1 times [2022-12-13 16:54:15,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:54:15,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1111064224] [2022-12-13 16:54:15,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:15,060 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:15,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:54:15,061 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:54:15,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-13 16:54:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:15,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 16:54:15,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:54:15,165 INFO L321 Elim1Store]: treesize reduction 115, result has 16.1 percent of original size [2022-12-13 16:54:15,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 47 [2022-12-13 16:54:15,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:54:15,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:54:15,203 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:54:15,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1111064224] [2022-12-13 16:54:15,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1111064224] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:54:15,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:54:15,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:54:15,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823072325] [2022-12-13 16:54:15,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:54:15,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:54:15,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:54:15,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:54:15,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:54:15,386 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 346 [2022-12-13 16:54:15,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:15,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:54:15,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 346 [2022-12-13 16:54:15,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:54:15,721 INFO L130 PetriNetUnfolder]: 993/1488 cut-off events. [2022-12-13 16:54:15,721 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:54:15,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3012 conditions, 1488 events. 993/1488 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 6027 event pairs, 828 based on Foata normal form. 0/652 useless extension candidates. Maximal degree in co-relation 3005. Up to 1488 conditions per place. [2022-12-13 16:54:15,726 INFO L137 encePairwiseOnDemand]: 343/346 looper letters, 37 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2022-12-13 16:54:15,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 38 transitions, 161 flow [2022-12-13 16:54:15,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:54:15,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:54:15,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 490 transitions. [2022-12-13 16:54:15,729 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4720616570327553 [2022-12-13 16:54:15,729 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 490 transitions. [2022-12-13 16:54:15,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 490 transitions. [2022-12-13 16:54:15,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:54:15,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 490 transitions. [2022-12-13 16:54:15,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:15,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:15,737 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:15,737 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 89 flow. Second operand 3 states and 490 transitions. [2022-12-13 16:54:15,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 38 transitions, 161 flow [2022-12-13 16:54:15,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 38 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:54:15,739 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 86 flow [2022-12-13 16:54:15,739 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2022-12-13 16:54:15,740 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, -9 predicate places. [2022-12-13 16:54:15,740 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 86 flow [2022-12-13 16:54:15,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:15,741 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:54:15,741 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 16:54:15,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-13 16:54:15,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:15,943 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 16:54:15,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:54:15,944 INFO L85 PathProgramCache]: Analyzing trace with hash 24694, now seen corresponding path program 1 times [2022-12-13 16:54:15,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:54:15,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [994658684] [2022-12-13 16:54:15,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:15,946 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:15,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:54:15,949 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:54:15,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-13 16:54:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:16,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 16:54:16,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:54:16,127 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-12-13 16:54:16,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-12-13 16:54:16,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:54:16,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:54:16,163 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:54:16,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [994658684] [2022-12-13 16:54:16,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [994658684] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:54:16,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:54:16,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:54:16,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405650622] [2022-12-13 16:54:16,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:54:16,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:54:16,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:54:16,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:54:16,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:54:16,288 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 346 [2022-12-13 16:54:16,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:16,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:54:16,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 346 [2022-12-13 16:54:16,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:54:16,894 INFO L130 PetriNetUnfolder]: 1985/2974 cut-off events. [2022-12-13 16:54:16,894 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:54:16,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6016 conditions, 2974 events. 1985/2974 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 13714 event pairs, 1656 based on Foata normal form. 0/1303 useless extension candidates. Maximal degree in co-relation 6008. Up to 1489 conditions per place. [2022-12-13 16:54:16,908 INFO L137 encePairwiseOnDemand]: 343/346 looper letters, 72 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2022-12-13 16:54:16,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 74 transitions, 312 flow [2022-12-13 16:54:16,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:54:16,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:54:16,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 525 transitions. [2022-12-13 16:54:16,911 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5057803468208093 [2022-12-13 16:54:16,911 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 525 transitions. [2022-12-13 16:54:16,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 525 transitions. [2022-12-13 16:54:16,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:54:16,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 525 transitions. [2022-12-13 16:54:16,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2022-12-13 16:54:16,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:16,914 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:16,914 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 86 flow. Second operand 3 states and 525 transitions. [2022-12-13 16:54:16,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 74 transitions, 312 flow [2022-12-13 16:54:16,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 74 transitions, 311 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:54:16,915 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 97 flow [2022-12-13 16:54:16,915 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2022-12-13 16:54:16,916 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, -7 predicate places. [2022-12-13 16:54:16,916 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 97 flow [2022-12-13 16:54:16,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:16,916 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:54:16,916 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 16:54:16,928 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-13 16:54:17,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:17,117 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 16:54:17,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:54:17,118 INFO L85 PathProgramCache]: Analyzing trace with hash 768694, now seen corresponding path program 1 times [2022-12-13 16:54:17,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:54:17,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1509007524] [2022-12-13 16:54:17,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:17,118 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:17,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:54:17,119 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:54:17,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-13 16:54:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:17,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 16:54:17,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:54:17,268 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-12-13 16:54:17,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-12-13 16:54:17,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:54:17,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:54:17,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:54:17,561 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:54:17,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1509007524] [2022-12-13 16:54:17,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1509007524] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:54:17,561 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:54:17,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-12-13 16:54:17,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958144105] [2022-12-13 16:54:17,562 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 16:54:17,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 16:54:17,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:54:17,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 16:54:17,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 16:54:18,355 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 346 [2022-12-13 16:54:18,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 97 flow. Second operand has 6 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:18,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:54:18,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 346 [2022-12-13 16:54:18,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:54:19,170 INFO L130 PetriNetUnfolder]: 2979/4464 cut-off events. [2022-12-13 16:54:19,170 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:54:19,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9036 conditions, 4464 events. 2979/4464 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 22322 event pairs, 2484 based on Foata normal form. 0/1961 useless extension candidates. Maximal degree in co-relation 9026. Up to 1488 conditions per place. [2022-12-13 16:54:19,188 INFO L137 encePairwiseOnDemand]: 342/346 looper letters, 107 selfloop transitions, 7 changer transitions 0/114 dead transitions. [2022-12-13 16:54:19,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 114 transitions, 493 flow [2022-12-13 16:54:19,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:54:19,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 16:54:19,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 987 transitions. [2022-12-13 16:54:19,192 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4754335260115607 [2022-12-13 16:54:19,192 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 987 transitions. [2022-12-13 16:54:19,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 987 transitions. [2022-12-13 16:54:19,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:54:19,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 987 transitions. [2022-12-13 16:54:19,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 164.5) internal successors, (987), 6 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:19,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 346.0) internal successors, (2422), 7 states have internal predecessors, (2422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:19,200 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 346.0) internal successors, (2422), 7 states have internal predecessors, (2422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:19,200 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 97 flow. Second operand 6 states and 987 transitions. [2022-12-13 16:54:19,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 114 transitions, 493 flow [2022-12-13 16:54:19,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 114 transitions, 491 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:54:19,202 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 149 flow [2022-12-13 16:54:19,203 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=149, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2022-12-13 16:54:19,203 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2022-12-13 16:54:19,203 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 149 flow [2022-12-13 16:54:19,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:19,204 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:54:19,204 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 16:54:19,214 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-13 16:54:19,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:19,405 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 16:54:19,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:54:19,406 INFO L85 PathProgramCache]: Analyzing trace with hash 23836791, now seen corresponding path program 1 times [2022-12-13 16:54:19,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:54:19,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1854818622] [2022-12-13 16:54:19,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:19,408 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:19,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:54:19,411 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:54:19,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-13 16:54:19,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:19,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 16:54:19,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:54:19,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:54:19,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:54:19,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:54:19,612 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-12-13 16:54:19,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2022-12-13 16:54:19,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-12-13 16:54:19,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:54:19,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:54:19,675 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:54:19,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1854818622] [2022-12-13 16:54:19,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1854818622] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:54:19,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:54:19,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:54:19,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139727878] [2022-12-13 16:54:19,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:54:19,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:54:19,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:54:19,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:54:19,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:54:19,825 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 346 [2022-12-13 16:54:19,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:19,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:54:19,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 346 [2022-12-13 16:54:19,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:54:20,387 INFO L130 PetriNetUnfolder]: 2829/4224 cut-off events. [2022-12-13 16:54:20,387 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 16:54:20,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8581 conditions, 4224 events. 2829/4224 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 20878 event pairs, 2352 based on Foata normal form. 0/1911 useless extension candidates. Maximal degree in co-relation 8566. Up to 4224 conditions per place. [2022-12-13 16:54:20,397 INFO L137 encePairwiseOnDemand]: 343/346 looper letters, 41 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2022-12-13 16:54:20,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 42 transitions, 229 flow [2022-12-13 16:54:20,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:54:20,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:54:20,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 491 transitions. [2022-12-13 16:54:20,399 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4730250481695568 [2022-12-13 16:54:20,399 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 491 transitions. [2022-12-13 16:54:20,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 491 transitions. [2022-12-13 16:54:20,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:54:20,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 491 transitions. [2022-12-13 16:54:20,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:20,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:20,401 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:20,401 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 149 flow. Second operand 3 states and 491 transitions. [2022-12-13 16:54:20,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 42 transitions, 229 flow [2022-12-13 16:54:20,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 42 transitions, 219 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-12-13 16:54:20,403 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 137 flow [2022-12-13 16:54:20,403 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2022-12-13 16:54:20,403 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2022-12-13 16:54:20,403 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 137 flow [2022-12-13 16:54:20,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:20,403 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:54:20,403 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 16:54:20,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-13 16:54:20,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:20,605 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 16:54:20,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:54:20,606 INFO L85 PathProgramCache]: Analyzing trace with hash 23836790, now seen corresponding path program 1 times [2022-12-13 16:54:20,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:54:20,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1778297846] [2022-12-13 16:54:20,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:20,608 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:20,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:54:20,611 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:54:20,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-13 16:54:20,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:20,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 16:54:20,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:54:20,782 INFO L321 Elim1Store]: treesize reduction 101, result has 20.5 percent of original size [2022-12-13 16:54:20,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 44 [2022-12-13 16:54:20,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:54:20,802 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:54:20,802 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:54:20,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1778297846] [2022-12-13 16:54:20,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1778297846] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:54:20,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:54:20,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:54:20,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387679192] [2022-12-13 16:54:20,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:54:20,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:54:20,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:54:20,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:54:20,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:54:20,892 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 346 [2022-12-13 16:54:20,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 137 flow. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:20,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:54:20,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 346 [2022-12-13 16:54:20,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:54:21,386 INFO L130 PetriNetUnfolder]: 2679/3984 cut-off events. [2022-12-13 16:54:21,386 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-13 16:54:21,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8098 conditions, 3984 events. 2679/3984 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 19469 event pairs, 2220 based on Foata normal form. 0/1860 useless extension candidates. Maximal degree in co-relation 8082. Up to 3984 conditions per place. [2022-12-13 16:54:21,395 INFO L137 encePairwiseOnDemand]: 343/346 looper letters, 39 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2022-12-13 16:54:21,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 40 transitions, 213 flow [2022-12-13 16:54:21,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:54:21,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:54:21,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 477 transitions. [2022-12-13 16:54:21,397 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4595375722543353 [2022-12-13 16:54:21,397 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 477 transitions. [2022-12-13 16:54:21,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 477 transitions. [2022-12-13 16:54:21,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:54:21,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 477 transitions. [2022-12-13 16:54:21,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:21,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:21,399 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:21,399 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 137 flow. Second operand 3 states and 477 transitions. [2022-12-13 16:54:21,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 40 transitions, 213 flow [2022-12-13 16:54:21,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 40 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:54:21,400 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 134 flow [2022-12-13 16:54:21,400 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2022-12-13 16:54:21,400 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, -1 predicate places. [2022-12-13 16:54:21,400 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 134 flow [2022-12-13 16:54:21,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:21,401 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:54:21,401 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 16:54:21,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-12-13 16:54:21,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:21,602 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 16:54:21,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:54:21,602 INFO L85 PathProgramCache]: Analyzing trace with hash 738939445, now seen corresponding path program 1 times [2022-12-13 16:54:21,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:54:21,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771549633] [2022-12-13 16:54:21,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:21,603 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:21,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:54:21,604 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:54:21,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-13 16:54:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:21,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 16:54:21,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:54:21,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:54:21,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:54:21,757 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:54:21,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1771549633] [2022-12-13 16:54:21,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1771549633] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:54:21,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:54:21,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:54:21,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524464723] [2022-12-13 16:54:21,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:54:21,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:54:21,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:54:21,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:54:21,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:54:21,798 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 346 [2022-12-13 16:54:21,799 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 152.25) internal successors, (609), 4 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:21,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:54:21,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 346 [2022-12-13 16:54:21,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:54:22,341 INFO L130 PetriNetUnfolder]: 1836/2737 cut-off events. [2022-12-13 16:54:22,341 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-13 16:54:22,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5581 conditions, 2737 events. 1836/2737 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 12342 event pairs, 1503 based on Foata normal form. 8/1321 useless extension candidates. Maximal degree in co-relation 5564. Up to 2659 conditions per place. [2022-12-13 16:54:22,352 INFO L137 encePairwiseOnDemand]: 333/346 looper letters, 47 selfloop transitions, 3 changer transitions 3/53 dead transitions. [2022-12-13 16:54:22,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 53 transitions, 273 flow [2022-12-13 16:54:22,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:54:22,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 16:54:22,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 662 transitions. [2022-12-13 16:54:22,355 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47832369942196534 [2022-12-13 16:54:22,355 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 662 transitions. [2022-12-13 16:54:22,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 662 transitions. [2022-12-13 16:54:22,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:54:22,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 662 transitions. [2022-12-13 16:54:22,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 165.5) internal successors, (662), 4 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:22,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 346.0) internal successors, (1730), 5 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:22,362 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 346.0) internal successors, (1730), 5 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:22,362 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 134 flow. Second operand 4 states and 662 transitions. [2022-12-13 16:54:22,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 53 transitions, 273 flow [2022-12-13 16:54:22,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 53 transitions, 272 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:54:22,364 INFO L231 Difference]: Finished difference. Result has 55 places, 41 transitions, 171 flow [2022-12-13 16:54:22,365 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=171, PETRI_PLACES=55, PETRI_TRANSITIONS=41} [2022-12-13 16:54:22,365 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2022-12-13 16:54:22,365 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 41 transitions, 171 flow [2022-12-13 16:54:22,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 152.25) internal successors, (609), 4 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:22,366 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:54:22,366 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 16:54:22,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-13 16:54:22,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:22,567 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 16:54:22,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:54:22,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1428484214, now seen corresponding path program 2 times [2022-12-13 16:54:22,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:54:22,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2031933526] [2022-12-13 16:54:22,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 16:54:22,568 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:22,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:54:22,569 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:54:22,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-12-13 16:54:22,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 16:54:22,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:54:22,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 16:54:22,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:54:22,724 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-12-13 16:54:22,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-12-13 16:54:22,848 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:54:22,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:54:23,487 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:54:23,487 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:54:23,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2031933526] [2022-12-13 16:54:23,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2031933526] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:54:23,487 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:54:23,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-12-13 16:54:23,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264165421] [2022-12-13 16:54:23,487 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 16:54:23,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 16:54:23,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:54:23,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 16:54:23,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-12-13 16:54:26,800 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 346 [2022-12-13 16:54:26,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 41 transitions, 171 flow. Second operand has 12 states, 12 states have (on average 147.0) internal successors, (1764), 12 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:26,803 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:54:26,803 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 346 [2022-12-13 16:54:26,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:54:32,138 INFO L130 PetriNetUnfolder]: 8079/12017 cut-off events. [2022-12-13 16:54:32,138 INFO L131 PetriNetUnfolder]: For 1039/1039 co-relation queries the response was YES. [2022-12-13 16:54:32,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30799 conditions, 12017 events. 8079/12017 cut-off events. For 1039/1039 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 67616 event pairs, 6683 based on Foata normal form. 6/7011 useless extension candidates. Maximal degree in co-relation 30779. Up to 6409 conditions per place. [2022-12-13 16:54:32,176 INFO L137 encePairwiseOnDemand]: 342/346 looper letters, 291 selfloop transitions, 12 changer transitions 3/306 dead transitions. [2022-12-13 16:54:32,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 306 transitions, 1578 flow [2022-12-13 16:54:32,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 16:54:32,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 16:54:32,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2064 transitions. [2022-12-13 16:54:32,180 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49710982658959535 [2022-12-13 16:54:32,180 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2064 transitions. [2022-12-13 16:54:32,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2064 transitions. [2022-12-13 16:54:32,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:54:32,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2064 transitions. [2022-12-13 16:54:32,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 172.0) internal successors, (2064), 12 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:32,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 346.0) internal successors, (4498), 13 states have internal predecessors, (4498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:32,188 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 346.0) internal successors, (4498), 13 states have internal predecessors, (4498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:32,188 INFO L175 Difference]: Start difference. First operand has 55 places, 41 transitions, 171 flow. Second operand 12 states and 2064 transitions. [2022-12-13 16:54:32,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 306 transitions, 1578 flow [2022-12-13 16:54:32,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 306 transitions, 1568 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-13 16:54:32,191 INFO L231 Difference]: Finished difference. Result has 71 places, 48 transitions, 259 flow [2022-12-13 16:54:32,192 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=259, PETRI_PLACES=71, PETRI_TRANSITIONS=48} [2022-12-13 16:54:32,192 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 19 predicate places. [2022-12-13 16:54:32,192 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 48 transitions, 259 flow [2022-12-13 16:54:32,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 147.0) internal successors, (1764), 12 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:32,193 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:54:32,193 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 16:54:32,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-12-13 16:54:32,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:32,393 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 16:54:32,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:54:32,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1432336110, now seen corresponding path program 1 times [2022-12-13 16:54:32,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:54:32,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1640950045] [2022-12-13 16:54:32,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:32,394 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:32,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:54:32,395 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:54:32,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-12-13 16:54:32,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:32,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:54:32,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:54:32,517 INFO L321 Elim1Store]: treesize reduction 88, result has 30.7 percent of original size [2022-12-13 16:54:32,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 46 [2022-12-13 16:54:32,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:54:32,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:54:32,534 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:54:32,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1640950045] [2022-12-13 16:54:32,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1640950045] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:54:32,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:54:32,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:54:32,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114155209] [2022-12-13 16:54:32,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:54:32,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:54:32,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:54:32,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:54:32,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:54:32,606 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 346 [2022-12-13 16:54:32,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 48 transitions, 259 flow. Second operand has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:32,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:54:32,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 346 [2022-12-13 16:54:32,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:54:33,849 INFO L130 PetriNetUnfolder]: 7585/11249 cut-off events. [2022-12-13 16:54:33,849 INFO L131 PetriNetUnfolder]: For 767/767 co-relation queries the response was YES. [2022-12-13 16:54:33,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28991 conditions, 11249 events. 7585/11249 cut-off events. For 767/767 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 62097 event pairs, 6283 based on Foata normal form. 0/6718 useless extension candidates. Maximal degree in co-relation 28964. Up to 11249 conditions per place. [2022-12-13 16:54:33,884 INFO L137 encePairwiseOnDemand]: 343/346 looper letters, 45 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2022-12-13 16:54:33,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 46 transitions, 347 flow [2022-12-13 16:54:33,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:54:33,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:54:33,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 475 transitions. [2022-12-13 16:54:33,886 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4576107899807322 [2022-12-13 16:54:33,886 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 475 transitions. [2022-12-13 16:54:33,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 475 transitions. [2022-12-13 16:54:33,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:54:33,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 475 transitions. [2022-12-13 16:54:33,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:33,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:33,888 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:33,888 INFO L175 Difference]: Start difference. First operand has 71 places, 48 transitions, 259 flow. Second operand 3 states and 475 transitions. [2022-12-13 16:54:33,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 46 transitions, 347 flow [2022-12-13 16:54:33,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 46 transitions, 322 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-12-13 16:54:33,890 INFO L231 Difference]: Finished difference. Result has 67 places, 46 transitions, 232 flow [2022-12-13 16:54:33,890 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=67, PETRI_TRANSITIONS=46} [2022-12-13 16:54:33,891 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 15 predicate places. [2022-12-13 16:54:33,891 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 46 transitions, 232 flow [2022-12-13 16:54:33,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:33,891 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:54:33,891 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 16:54:33,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-12-13 16:54:34,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:34,092 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 16:54:34,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:54:34,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1432336111, now seen corresponding path program 1 times [2022-12-13 16:54:34,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:54:34,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1920673231] [2022-12-13 16:54:34,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:34,093 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:34,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:54:34,094 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:54:34,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-12-13 16:54:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:34,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 16:54:34,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:54:34,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:54:34,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:54:34,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:54:34,221 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-12-13 16:54:34,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2022-12-13 16:54:34,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-12-13 16:54:34,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:54:34,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:54:34,249 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:54:34,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1920673231] [2022-12-13 16:54:34,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1920673231] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:54:34,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:54:34,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:54:34,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066446950] [2022-12-13 16:54:34,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:54:34,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:54:34,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:54:34,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:54:34,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:54:34,342 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 346 [2022-12-13 16:54:34,343 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 46 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:34,343 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:54:34,343 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 346 [2022-12-13 16:54:34,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:54:35,461 INFO L130 PetriNetUnfolder]: 7091/10481 cut-off events. [2022-12-13 16:54:35,461 INFO L131 PetriNetUnfolder]: For 890/890 co-relation queries the response was YES. [2022-12-13 16:54:35,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27132 conditions, 10481 events. 7091/10481 cut-off events. For 890/890 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 57192 event pairs, 5883 based on Foata normal form. 0/6431 useless extension candidates. Maximal degree in co-relation 27104. Up to 10481 conditions per place. [2022-12-13 16:54:35,491 INFO L137 encePairwiseOnDemand]: 343/346 looper letters, 42 selfloop transitions, 1 changer transitions 1/44 dead transitions. [2022-12-13 16:54:35,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 44 transitions, 316 flow [2022-12-13 16:54:35,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:54:35,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:54:35,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 485 transitions. [2022-12-13 16:54:35,493 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46724470134874757 [2022-12-13 16:54:35,493 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 485 transitions. [2022-12-13 16:54:35,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 485 transitions. [2022-12-13 16:54:35,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:54:35,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 485 transitions. [2022-12-13 16:54:35,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:35,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:35,495 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:35,495 INFO L175 Difference]: Start difference. First operand has 67 places, 46 transitions, 232 flow. Second operand 3 states and 485 transitions. [2022-12-13 16:54:35,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 44 transitions, 316 flow [2022-12-13 16:54:35,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 44 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:54:35,497 INFO L231 Difference]: Finished difference. Result has 66 places, 43 transitions, 223 flow [2022-12-13 16:54:35,497 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=223, PETRI_PLACES=66, PETRI_TRANSITIONS=43} [2022-12-13 16:54:35,497 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 14 predicate places. [2022-12-13 16:54:35,497 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 43 transitions, 223 flow [2022-12-13 16:54:35,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:35,497 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:54:35,498 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 16:54:35,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-12-13 16:54:35,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:35,698 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 16:54:35,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:54:35,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1428606965, now seen corresponding path program 1 times [2022-12-13 16:54:35,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:54:35,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1406853868] [2022-12-13 16:54:35,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:35,702 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:35,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:54:35,705 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:54:35,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-12-13 16:54:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:35,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 16:54:35,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:54:35,855 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-12-13 16:54:35,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-12-13 16:54:35,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:54:35,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:54:36,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:54:36,667 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:54:36,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1406853868] [2022-12-13 16:54:36,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1406853868] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:54:36,667 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:54:36,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-12-13 16:54:36,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893675687] [2022-12-13 16:54:36,667 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 16:54:36,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 16:54:36,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:54:36,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 16:54:36,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:54:39,601 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 346 [2022-12-13 16:54:39,603 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 43 transitions, 223 flow. Second operand has 8 states, 8 states have (on average 142.5) internal successors, (1140), 8 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:39,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:54:39,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 346 [2022-12-13 16:54:39,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:54:44,239 INFO L130 PetriNetUnfolder]: 5877/8716 cut-off events. [2022-12-13 16:54:44,240 INFO L131 PetriNetUnfolder]: For 833/833 co-relation queries the response was YES. [2022-12-13 16:54:44,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22472 conditions, 8716 events. 5877/8716 cut-off events. For 833/833 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 46718 event pairs, 4831 based on Foata normal form. 42/5554 useless extension candidates. Maximal degree in co-relation 22443. Up to 6943 conditions per place. [2022-12-13 16:54:44,267 INFO L137 encePairwiseOnDemand]: 336/346 looper letters, 73 selfloop transitions, 11 changer transitions 2/86 dead transitions. [2022-12-13 16:54:44,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 86 transitions, 522 flow [2022-12-13 16:54:44,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 16:54:44,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 16:54:44,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1356 transitions. [2022-12-13 16:54:44,271 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43545279383429675 [2022-12-13 16:54:44,271 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1356 transitions. [2022-12-13 16:54:44,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1356 transitions. [2022-12-13 16:54:44,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:54:44,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1356 transitions. [2022-12-13 16:54:44,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 150.66666666666666) internal successors, (1356), 9 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:44,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 346.0) internal successors, (3460), 10 states have internal predecessors, (3460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:44,276 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 346.0) internal successors, (3460), 10 states have internal predecessors, (3460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:44,276 INFO L175 Difference]: Start difference. First operand has 66 places, 43 transitions, 223 flow. Second operand 9 states and 1356 transitions. [2022-12-13 16:54:44,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 86 transitions, 522 flow [2022-12-13 16:54:44,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 86 transitions, 521 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:54:44,279 INFO L231 Difference]: Finished difference. Result has 74 places, 44 transitions, 271 flow [2022-12-13 16:54:44,279 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=271, PETRI_PLACES=74, PETRI_TRANSITIONS=44} [2022-12-13 16:54:44,279 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 22 predicate places. [2022-12-13 16:54:44,279 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 44 transitions, 271 flow [2022-12-13 16:54:44,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 142.5) internal successors, (1140), 8 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:44,279 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:54:44,280 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 16:54:44,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-12-13 16:54:44,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:44,481 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 16:54:44,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:54:44,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1428606964, now seen corresponding path program 1 times [2022-12-13 16:54:44,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:54:44,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [874807136] [2022-12-13 16:54:44,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:44,484 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:44,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:54:44,487 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:54:44,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-12-13 16:54:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:44,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 16:54:44,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:54:44,662 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-12-13 16:54:44,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-12-13 16:54:44,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:54:44,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:54:44,684 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:54:44,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [874807136] [2022-12-13 16:54:44,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [874807136] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:54:44,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:54:44,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:54:44,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551746037] [2022-12-13 16:54:44,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:54:44,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:54:44,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:54:44,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:54:44,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:54:44,798 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 346 [2022-12-13 16:54:44,799 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 44 transitions, 271 flow. Second operand has 4 states, 4 states have (on average 145.5) internal successors, (582), 4 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:44,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:54:44,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 346 [2022-12-13 16:54:44,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:54:45,407 INFO L130 PetriNetUnfolder]: 3122/4713 cut-off events. [2022-12-13 16:54:45,407 INFO L131 PetriNetUnfolder]: For 2278/2278 co-relation queries the response was YES. [2022-12-13 16:54:45,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13848 conditions, 4713 events. 3122/4713 cut-off events. For 2278/2278 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 23198 event pairs, 2412 based on Foata normal form. 0/4105 useless extension candidates. Maximal degree in co-relation 13816. Up to 4700 conditions per place. [2022-12-13 16:54:45,422 INFO L137 encePairwiseOnDemand]: 341/346 looper letters, 35 selfloop transitions, 5 changer transitions 1/41 dead transitions. [2022-12-13 16:54:45,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 41 transitions, 339 flow [2022-12-13 16:54:45,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:54:45,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 16:54:45,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 606 transitions. [2022-12-13 16:54:45,424 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43786127167630057 [2022-12-13 16:54:45,424 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 606 transitions. [2022-12-13 16:54:45,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 606 transitions. [2022-12-13 16:54:45,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:54:45,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 606 transitions. [2022-12-13 16:54:45,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 151.5) internal successors, (606), 4 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:45,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 346.0) internal successors, (1730), 5 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:45,426 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 346.0) internal successors, (1730), 5 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:45,426 INFO L175 Difference]: Start difference. First operand has 74 places, 44 transitions, 271 flow. Second operand 4 states and 606 transitions. [2022-12-13 16:54:45,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 41 transitions, 339 flow [2022-12-13 16:54:45,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 41 transitions, 291 flow, removed 11 selfloop flow, removed 9 redundant places. [2022-12-13 16:54:45,430 INFO L231 Difference]: Finished difference. Result has 65 places, 40 transitions, 214 flow [2022-12-13 16:54:45,430 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=214, PETRI_PLACES=65, PETRI_TRANSITIONS=40} [2022-12-13 16:54:45,431 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 13 predicate places. [2022-12-13 16:54:45,431 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 40 transitions, 214 flow [2022-12-13 16:54:45,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 145.5) internal successors, (582), 4 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:45,431 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:54:45,431 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2022-12-13 16:54:45,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-12-13 16:54:45,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:45,632 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 16:54:45,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:54:45,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1440530997, now seen corresponding path program 2 times [2022-12-13 16:54:45,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:54:45,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115578836] [2022-12-13 16:54:45,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 16:54:45,635 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:45,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:54:45,638 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:54:45,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-12-13 16:54:45,698 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 16:54:45,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:54:45,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 16:54:45,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:54:45,781 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-12-13 16:54:45,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-12-13 16:54:45,860 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 16:54:45,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:54:45,861 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:54:45,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115578836] [2022-12-13 16:54:45,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1115578836] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:54:45,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:54:45,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:54:45,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797117415] [2022-12-13 16:54:45,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:54:45,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:54:45,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:54:45,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:54:45,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:54:46,032 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 346 [2022-12-13 16:54:46,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 40 transitions, 214 flow. Second operand has 4 states, 4 states have (on average 148.5) internal successors, (594), 4 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:46,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:54:46,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 346 [2022-12-13 16:54:46,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:54:46,505 INFO L130 PetriNetUnfolder]: 948/1513 cut-off events. [2022-12-13 16:54:46,506 INFO L131 PetriNetUnfolder]: For 1876/1876 co-relation queries the response was YES. [2022-12-13 16:54:46,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3857 conditions, 1513 events. 948/1513 cut-off events. For 1876/1876 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 6217 event pairs, 651 based on Foata normal form. 252/1765 useless extension candidates. Maximal degree in co-relation 3829. Up to 1500 conditions per place. [2022-12-13 16:54:46,511 INFO L137 encePairwiseOnDemand]: 340/346 looper letters, 31 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2022-12-13 16:54:46,511 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 36 transitions, 258 flow [2022-12-13 16:54:46,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:54:46,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 16:54:46,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 615 transitions. [2022-12-13 16:54:46,513 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.444364161849711 [2022-12-13 16:54:46,513 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 615 transitions. [2022-12-13 16:54:46,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 615 transitions. [2022-12-13 16:54:46,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:54:46,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 615 transitions. [2022-12-13 16:54:46,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 153.75) internal successors, (615), 4 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:46,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 346.0) internal successors, (1730), 5 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:46,515 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 346.0) internal successors, (1730), 5 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:46,515 INFO L175 Difference]: Start difference. First operand has 65 places, 40 transitions, 214 flow. Second operand 4 states and 615 transitions. [2022-12-13 16:54:46,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 36 transitions, 258 flow [2022-12-13 16:54:46,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 36 transitions, 248 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-12-13 16:54:46,518 INFO L231 Difference]: Finished difference. Result has 59 places, 36 transitions, 186 flow [2022-12-13 16:54:46,518 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=59, PETRI_TRANSITIONS=36} [2022-12-13 16:54:46,519 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 7 predicate places. [2022-12-13 16:54:46,519 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 36 transitions, 186 flow [2022-12-13 16:54:46,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.5) internal successors, (594), 4 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:54:46,519 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:54:46,519 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1] [2022-12-13 16:54:46,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-12-13 16:54:46,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:46,720 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 16:54:46,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:54:46,721 INFO L85 PathProgramCache]: Analyzing trace with hash 186959990, now seen corresponding path program 3 times [2022-12-13 16:54:46,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:54:46,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [221766500] [2022-12-13 16:54:46,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 16:54:46,723 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:46,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:54:46,725 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:54:46,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-12-13 16:54:46,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-13 16:54:46,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:54:46,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 16:54:46,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:54:46,979 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-12-13 16:54:46,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-12-13 16:54:47,378 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:54:47,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:54:50,024 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:54:50,024 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:54:50,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [221766500] [2022-12-13 16:54:50,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [221766500] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:54:50,024 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:54:50,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-12-13 16:54:50,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300466094] [2022-12-13 16:54:50,025 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 16:54:50,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 16:54:50,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:54:50,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 16:54:50,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-12-13 16:55:07,866 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 346 [2022-12-13 16:55:07,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 36 transitions, 186 flow. Second operand has 24 states, 24 states have (on average 147.0) internal successors, (3528), 24 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:55:07,868 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:55:07,868 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 346 [2022-12-13 16:55:07,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:55:28,716 INFO L130 PetriNetUnfolder]: 2702/4306 cut-off events. [2022-12-13 16:55:28,716 INFO L131 PetriNetUnfolder]: For 1227/1227 co-relation queries the response was YES. [2022-12-13 16:55:28,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10405 conditions, 4306 events. 2702/4306 cut-off events. For 1227/1227 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 20095 event pairs, 1860 based on Foata normal form. 12/4318 useless extension candidates. Maximal degree in co-relation 10379. Up to 1361 conditions per place. [2022-12-13 16:55:28,726 INFO L137 encePairwiseOnDemand]: 342/346 looper letters, 402 selfloop transitions, 24 changer transitions 0/426 dead transitions. [2022-12-13 16:55:28,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 426 transitions, 2254 flow [2022-12-13 16:55:28,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 16:55:28,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-13 16:55:28,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3942 transitions. [2022-12-13 16:55:28,732 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47471098265895956 [2022-12-13 16:55:28,732 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3942 transitions. [2022-12-13 16:55:28,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3942 transitions. [2022-12-13 16:55:28,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:55:28,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3942 transitions. [2022-12-13 16:55:28,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 164.25) internal successors, (3942), 24 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:55:28,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 346.0) internal successors, (8650), 25 states have internal predecessors, (8650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:55:28,751 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 346.0) internal successors, (8650), 25 states have internal predecessors, (8650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:55:28,751 INFO L175 Difference]: Start difference. First operand has 59 places, 36 transitions, 186 flow. Second operand 24 states and 3942 transitions. [2022-12-13 16:55:28,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 426 transitions, 2254 flow [2022-12-13 16:55:28,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 426 transitions, 2231 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:55:28,760 INFO L231 Difference]: Finished difference. Result has 93 places, 49 transitions, 367 flow [2022-12-13 16:55:28,760 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=367, PETRI_PLACES=93, PETRI_TRANSITIONS=49} [2022-12-13 16:55:28,760 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 41 predicate places. [2022-12-13 16:55:28,760 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 49 transitions, 367 flow [2022-12-13 16:55:28,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 147.0) internal successors, (3528), 24 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:55:28,762 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:55:28,762 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:55:28,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-12-13 16:55:28,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:55:28,963 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 16:55:28,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:55:28,964 INFO L85 PathProgramCache]: Analyzing trace with hash -81950031, now seen corresponding path program 1 times [2022-12-13 16:55:28,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:55:28,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [110735165] [2022-12-13 16:55:28,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:55:28,967 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:55:28,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:55:28,971 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:55:28,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f5353e-f10b-4afc-a09f-ea18f6854136/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-12-13 16:55:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:55:29,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 41 conjunts are in the unsatisfiable core [2022-12-13 16:55:29,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:55:29,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:55:29,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:55:29,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:55:29,231 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-12-13 16:55:29,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 34 [2022-12-13 16:55:29,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-12-13 16:55:29,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 17 treesize of output 13 [2022-12-13 16:55:29,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-12-13 16:55:30,049 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:55:30,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 245 treesize of output 59 [2022-12-13 16:55:30,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:55:30,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:55:31,666 INFO L321 Elim1Store]: treesize reduction 672, result has 23.7 percent of original size [2022-12-13 16:55:31,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 305 treesize of output 371 [2022-12-13 16:55:32,007 INFO L321 Elim1Store]: treesize reduction 336, result has 23.8 percent of original size [2022-12-13 16:55:32,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 133 treesize of output 154