./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R --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 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 --- 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-38b53e6 [2022-11-25 18:34:46,854 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:34:46,857 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:34:46,900 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:34:46,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:34:46,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:34:46,907 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:34:46,911 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:34:46,913 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:34:46,919 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:34:46,921 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:34:46,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:34:46,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:34:46,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:34:46,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:34:46,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:34:46,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:34:46,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:34:46,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:34:46,943 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:34:46,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:34:46,948 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:34:46,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:34:46,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:34:46,961 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:34:46,963 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:34:46,963 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:34:46,964 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:34:46,966 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:34:46,967 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:34:46,967 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:34:46,968 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:34:46,970 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:34:46,972 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:34:46,974 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:34:46,974 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:34:46,975 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:34:46,975 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:34:46,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:34:46,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:34:46,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:34:46,979 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 18:34:47,018 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:34:47,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:34:47,020 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:34:47,020 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:34:47,021 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:34:47,021 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:34:47,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:34:47,022 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:34:47,022 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:34:47,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:34:47,024 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:34:47,024 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:34:47,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:34:47,025 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:34:47,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:34:47,025 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 18:34:47,025 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 18:34:47,025 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 18:34:47,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:34:47,026 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 18:34:47,026 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:34:47,026 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:34:47,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:34:47,027 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:34:47,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:34:47,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:34:47,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:34:47,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:34:47,028 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:34:47,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:34:47,029 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:34:47,029 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:34:47,029 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:34:47,029 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_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 [2022-11-25 18:34:47,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:34:47,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:34:47,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:34:47,383 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:34:47,383 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:34:47,384 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2022-11-25 18:34:50,347 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:34:50,622 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:34:50,630 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2022-11-25 18:34:50,641 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/data/10da90096/43ac14aa5d2245c1866322fbeab1399d/FLAG24644c9f7 [2022-11-25 18:34:50,661 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/data/10da90096/43ac14aa5d2245c1866322fbeab1399d [2022-11-25 18:34:50,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:34:50,667 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:34:50,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:34:50,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:34:50,675 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:34:50,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:34:50" (1/1) ... [2022-11-25 18:34:50,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ffbcc10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:34:50, skipping insertion in model container [2022-11-25 18:34:50,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:34:50" (1/1) ... [2022-11-25 18:34:50,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:34:50,730 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:34:50,996 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_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[3996,4009] [2022-11-25 18:34:51,019 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:34:51,034 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-25 18:34:51,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@58a3822c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:34:51, skipping insertion in model container [2022-11-25 18:34:51,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:34:51,036 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-25 18:34:51,039 INFO L158 Benchmark]: Toolchain (without parser) took 369.73ms. Allocated memory is still 121.6MB. Free memory was 86.6MB in the beginning and 76.0MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 18:34:51,040 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 121.6MB. Free memory is still 93.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:34:51,041 INFO L158 Benchmark]: CACSL2BoogieTranslator took 365.35ms. Allocated memory is still 121.6MB. Free memory was 86.2MB in the beginning and 76.0MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 18:34:51,042 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 121.6MB. Free memory is still 93.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 365.35ms. Allocated memory is still 121.6MB. Free memory was 86.2MB in the beginning and 76.0MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 118]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R --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 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 --- 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-38b53e6 [2022-11-25 18:34:53,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:34:53,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:34:53,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:34:53,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:34:53,569 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:34:53,571 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:34:53,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:34:53,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:34:53,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:34:53,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:34:53,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:34:53,579 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:34:53,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:34:53,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:34:53,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:34:53,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:34:53,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:34:53,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:34:53,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:34:53,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:34:53,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:34:53,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:34:53,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:34:53,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:34:53,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:34:53,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:34:53,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:34:53,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:34:53,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:34:53,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:34:53,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:34:53,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:34:53,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:34:53,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:34:53,616 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:34:53,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:34:53,618 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:34:53,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:34:53,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:34:53,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:34:53,625 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-25 18:34:53,671 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:34:53,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:34:53,672 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:34:53,672 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:34:53,673 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:34:53,673 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:34:53,674 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:34:53,675 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:34:53,675 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:34:53,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:34:53,675 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:34:53,676 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:34:53,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:34:53,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:34:53,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:34:53,676 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 18:34:53,677 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 18:34:53,677 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 18:34:53,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:34:53,677 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 18:34:53,678 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 18:34:53,678 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 18:34:53,678 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:34:53,678 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:34:53,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:34:53,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:34:53,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:34:53,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:34:53,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:34:53,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:34:53,685 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 18:34:53,685 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 18:34:53,686 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:34:53,686 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:34:53,686 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:34:53,686 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 18:34:53,688 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_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 [2022-11-25 18:34:54,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:34:54,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:34:54,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:34:54,129 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:34:54,129 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:34:54,136 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2022-11-25 18:34:57,319 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:34:57,613 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:34:57,614 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2022-11-25 18:34:57,622 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/data/358db21c5/443024cf11b4492c80ed58a5cda19d7d/FLAG714b74a73 [2022-11-25 18:34:57,635 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/data/358db21c5/443024cf11b4492c80ed58a5cda19d7d [2022-11-25 18:34:57,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:34:57,640 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:34:57,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:34:57,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:34:57,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:34:57,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:34:57" (1/1) ... [2022-11-25 18:34:57,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f460cd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:34:57, skipping insertion in model container [2022-11-25 18:34:57,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:34:57" (1/1) ... [2022-11-25 18:34:57,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:34:57,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:34:57,980 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_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[3996,4009] [2022-11-25 18:34:58,010 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:34:58,032 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-25 18:34:58,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:34:58,090 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_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[3996,4009] [2022-11-25 18:34:58,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:34:58,105 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:34:58,141 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_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[3996,4009] [2022-11-25 18:34:58,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:34:58,192 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:34:58,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:34:58 WrapperNode [2022-11-25 18:34:58,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:34:58,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:34:58,196 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:34:58,196 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:34:58,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:34:58" (1/1) ... [2022-11-25 18:34:58,236 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:34:58" (1/1) ... [2022-11-25 18:34:58,300 INFO L138 Inliner]: procedures = 29, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 395 [2022-11-25 18:34:58,313 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:34:58,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:34:58,314 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:34:58,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:34:58,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:34:58" (1/1) ... [2022-11-25 18:34:58,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:34:58" (1/1) ... [2022-11-25 18:34:58,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:34:58" (1/1) ... [2022-11-25 18:34:58,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:34:58" (1/1) ... [2022-11-25 18:34:58,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:34:58" (1/1) ... [2022-11-25 18:34:58,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:34:58" (1/1) ... [2022-11-25 18:34:58,417 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:34:58" (1/1) ... [2022-11-25 18:34:58,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:34:58" (1/1) ... [2022-11-25 18:34:58,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:34:58,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:34:58,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:34:58,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:34:58,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:34:58" (1/1) ... [2022-11-25 18:34:58,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:34:58,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:34:58,492 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:34:58,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:34:58,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:34:58,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-25 18:34:58,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 18:34:58,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:34:58,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-25 18:34:58,541 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 18:34:58,541 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 18:34:58,541 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 18:34:58,542 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 18:34:58,542 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 18:34:58,542 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 18:34:58,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 18:34:58,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:34:58,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:34:58,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-25 18:34:58,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:34:58,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-25 18:34:58,547 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 18:34:58,729 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:34:58,731 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:35:00,084 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:35:00,100 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:35:00,104 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-25 18:35:00,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:35:00 BoogieIcfgContainer [2022-11-25 18:35:00,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:35:00,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:35:00,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:35:00,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:35:00,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:34:57" (1/3) ... [2022-11-25 18:35:00,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5874eb0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:35:00, skipping insertion in model container [2022-11-25 18:35:00,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:34:58" (2/3) ... [2022-11-25 18:35:00,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5874eb0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:35:00, skipping insertion in model container [2022-11-25 18:35:00,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:35:00" (3/3) ... [2022-11-25 18:35:00,120 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2022-11-25 18:35:00,139 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:35:00,140 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 62 error locations. [2022-11-25 18:35:00,140 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:35:00,348 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 18:35:00,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 559 places, 590 transitions, 1204 flow [2022-11-25 18:35:00,745 INFO L130 PetriNetUnfolder]: 41/587 cut-off events. [2022-11-25 18:35:00,746 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 18:35:00,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 600 conditions, 587 events. 41/587 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1032 event pairs, 0 based on Foata normal form. 0/484 useless extension candidates. Maximal degree in co-relation 485. Up to 2 conditions per place. [2022-11-25 18:35:00,757 INFO L82 GeneralOperation]: Start removeDead. Operand has 559 places, 590 transitions, 1204 flow [2022-11-25 18:35:00,773 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 551 places, 582 transitions, 1182 flow [2022-11-25 18:35:00,777 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:35:00,800 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 551 places, 582 transitions, 1182 flow [2022-11-25 18:35:00,804 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 551 places, 582 transitions, 1182 flow [2022-11-25 18:35:00,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 551 places, 582 transitions, 1182 flow [2022-11-25 18:35:00,984 INFO L130 PetriNetUnfolder]: 41/582 cut-off events. [2022-11-25 18:35:00,984 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 18:35:00,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 595 conditions, 582 events. 41/582 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1031 event pairs, 0 based on Foata normal form. 0/480 useless extension candidates. Maximal degree in co-relation 485. Up to 2 conditions per place. [2022-11-25 18:35:01,007 INFO L119 LiptonReduction]: Number of co-enabled transitions 32370 [2022-11-25 18:36:40,854 WARN L233 SmtUtils]: Spent 7.07s on a formula simplification. DAG size of input: 194 DAG size of output: 192 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 18:36:51,128 INFO L134 LiptonReduction]: Checked pairs total: 51864 [2022-11-25 18:36:51,128 INFO L136 LiptonReduction]: Total number of compositions: 713 [2022-11-25 18:36:51,144 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:36:51,148 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;@43292b71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:36:51,149 INFO L358 AbstractCegarLoop]: Starting to check reachability of 101 error locations. [2022-11-25 18:36:51,152 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 18:36:51,152 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:36:51,153 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:36:51,153 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 18:36:51,154 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-11-25 18:36:51,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:36:51,159 INFO L85 PathProgramCache]: Analyzing trace with hash 72959, now seen corresponding path program 1 times [2022-11-25 18:36:51,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:36:51,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1391781856] [2022-11-25 18:36:51,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:36:51,181 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:36:51,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:36:51,191 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:36:51,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-25 18:36:51,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:36:51,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:36:51,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:36:51,483 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-25 18:36:51,484 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 [2022-11-25 18:36:51,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:36:51,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:36:51,511 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:36:51,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1391781856] [2022-11-25 18:36:51,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1391781856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:36:51,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:36:51,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:36:51,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763517190] [2022-11-25 18:36:51,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:36:51,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:36:51,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:36:51,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:36:51,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:36:52,021 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 539 out of 1303 [2022-11-25 18:36:52,026 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 103 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 539.6666666666666) internal successors, (1619), 3 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:36:52,026 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:36:52,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 539 of 1303 [2022-11-25 18:36:52,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:36:59,329 INFO L130 PetriNetUnfolder]: 28971/40191 cut-off events. [2022-11-25 18:36:59,329 INFO L131 PetriNetUnfolder]: For 596/596 co-relation queries the response was YES. [2022-11-25 18:36:59,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80994 conditions, 40191 events. 28971/40191 cut-off events. For 596/596 co-relation queries the response was YES. Maximal size of possible extension queue 2205. Compared 246829 event pairs, 26445 based on Foata normal form. 0/12086 useless extension candidates. Maximal degree in co-relation 77476. Up to 40039 conditions per place. [2022-11-25 18:36:59,607 INFO L137 encePairwiseOnDemand]: 1294/1303 looper letters, 88 selfloop transitions, 1 changer transitions 0/95 dead transitions. [2022-11-25 18:36:59,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 95 transitions, 386 flow [2022-11-25 18:36:59,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:36:59,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:36:59,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1714 transitions. [2022-11-25 18:36:59,634 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4384753133793809 [2022-11-25 18:36:59,635 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1714 transitions. [2022-11-25 18:36:59,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1714 transitions. [2022-11-25 18:36:59,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:36:59,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1714 transitions. [2022-11-25 18:36:59,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 571.3333333333334) internal successors, (1714), 3 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:36:59,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1303.0) internal successors, (5212), 4 states have internal predecessors, (5212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:36:59,673 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1303.0) internal successors, (5212), 4 states have internal predecessors, (5212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:36:59,675 INFO L175 Difference]: Start difference. First operand has 103 places, 103 transitions, 224 flow. Second operand 3 states and 1714 transitions. [2022-11-25 18:36:59,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 95 transitions, 386 flow [2022-11-25 18:36:59,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 95 transitions, 374 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-25 18:36:59,690 INFO L231 Difference]: Finished difference. Result has 91 places, 95 transitions, 198 flow [2022-11-25 18:36:59,693 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1303, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=91, PETRI_TRANSITIONS=95} [2022-11-25 18:36:59,698 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, -12 predicate places. [2022-11-25 18:36:59,698 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 95 transitions, 198 flow [2022-11-25 18:36:59,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 539.6666666666666) internal successors, (1619), 3 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:36:59,705 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:36:59,705 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 18:36:59,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 18:36:59,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:36:59,918 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-11-25 18:36:59,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:36:59,928 INFO L85 PathProgramCache]: Analyzing trace with hash 72960, now seen corresponding path program 1 times [2022-11-25 18:36:59,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:36:59,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1617484332] [2022-11-25 18:36:59,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:36:59,930 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:36:59,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:36:59,934 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:37:00,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-25 18:37:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:37:00,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 18:37:00,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:37:00,262 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-25 18:37:00,262 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 [2022-11-25 18:37:00,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:37:00,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:37:00,310 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:37:00,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1617484332] [2022-11-25 18:37:00,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1617484332] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:37:00,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:37:00,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:37:00,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041407714] [2022-11-25 18:37:00,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:37:00,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:37:00,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:37:00,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:37:00,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:37:01,035 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 536 out of 1303 [2022-11-25 18:37:01,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 95 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 536.6666666666666) internal successors, (1610), 3 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:37:01,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:37:01,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 536 of 1303 [2022-11-25 18:37:01,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:37:07,012 INFO L130 PetriNetUnfolder]: 28974/40197 cut-off events. [2022-11-25 18:37:07,012 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2022-11-25 18:37:07,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80553 conditions, 40197 events. 28974/40197 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 2201. Compared 246836 event pairs, 26445 based on Foata normal form. 0/12089 useless extension candidates. Maximal degree in co-relation 80547. Up to 40041 conditions per place. [2022-11-25 18:37:07,247 INFO L137 encePairwiseOnDemand]: 1293/1303 looper letters, 88 selfloop transitions, 7 changer transitions 0/101 dead transitions. [2022-11-25 18:37:07,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 101 transitions, 400 flow [2022-11-25 18:37:07,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:37:07,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:37:07,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1706 transitions. [2022-11-25 18:37:07,255 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43642875415707344 [2022-11-25 18:37:07,255 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1706 transitions. [2022-11-25 18:37:07,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1706 transitions. [2022-11-25 18:37:07,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:37:07,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1706 transitions. [2022-11-25 18:37:07,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 568.6666666666666) internal successors, (1706), 3 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:37:07,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1303.0) internal successors, (5212), 4 states have internal predecessors, (5212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:37:07,275 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1303.0) internal successors, (5212), 4 states have internal predecessors, (5212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:37:07,275 INFO L175 Difference]: Start difference. First operand has 91 places, 95 transitions, 198 flow. Second operand 3 states and 1706 transitions. [2022-11-25 18:37:07,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 101 transitions, 400 flow [2022-11-25 18:37:07,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 101 transitions, 399 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:37:07,280 INFO L231 Difference]: Finished difference. Result has 94 places, 101 transitions, 255 flow [2022-11-25 18:37:07,281 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1303, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=255, PETRI_PLACES=94, PETRI_TRANSITIONS=101} [2022-11-25 18:37:07,282 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, -9 predicate places. [2022-11-25 18:37:07,283 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 101 transitions, 255 flow [2022-11-25 18:37:07,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 536.6666666666666) internal successors, (1610), 3 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:37:07,285 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:37:07,285 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 18:37:07,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-25 18:37:07,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:37:07,496 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-11-25 18:37:07,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:37:07,497 INFO L85 PathProgramCache]: Analyzing trace with hash 2277463, now seen corresponding path program 1 times [2022-11-25 18:37:07,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:37:07,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496367761] [2022-11-25 18:37:07,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:37:07,498 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:37:07,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:37:07,500 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:37:07,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-25 18:37:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:37:07,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 18:37:07,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:37:07,769 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-25 18:37:07,770 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 [2022-11-25 18:37:07,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:37:07,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:37:08,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:37:08,140 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:37:08,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496367761] [2022-11-25 18:37:08,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [496367761] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:37:08,141 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:37:08,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-25 18:37:08,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888812296] [2022-11-25 18:37:08,142 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:37:08,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:37:08,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:37:08,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:37:08,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:37:11,597 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 521 out of 1303 [2022-11-25 18:37:11,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 101 transitions, 255 flow. Second operand has 6 states, 6 states have (on average 522.0) internal successors, (3132), 6 states have internal predecessors, (3132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:37:11,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:37:11,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 521 of 1303 [2022-11-25 18:37:11,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:37:20,531 INFO L130 PetriNetUnfolder]: 28983/40215 cut-off events. [2022-11-25 18:37:20,531 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2022-11-25 18:37:20,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80637 conditions, 40215 events. 28983/40215 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 2195. Compared 247271 event pairs, 26445 based on Foata normal form. 0/12108 useless extension candidates. Maximal degree in co-relation 80628. Up to 40036 conditions per place. [2022-11-25 18:37:20,739 INFO L137 encePairwiseOnDemand]: 1292/1303 looper letters, 87 selfloop transitions, 26 changer transitions 0/119 dead transitions. [2022-11-25 18:37:20,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 119 transitions, 565 flow [2022-11-25 18:37:20,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:37:20,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:37:20,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3248 transitions. [2022-11-25 18:37:20,748 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41545152212842157 [2022-11-25 18:37:20,749 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3248 transitions. [2022-11-25 18:37:20,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3248 transitions. [2022-11-25 18:37:20,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:37:20,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3248 transitions. [2022-11-25 18:37:20,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 541.3333333333334) internal successors, (3248), 6 states have internal predecessors, (3248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:37:20,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1303.0) internal successors, (9121), 7 states have internal predecessors, (9121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:37:20,776 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1303.0) internal successors, (9121), 7 states have internal predecessors, (9121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:37:20,776 INFO L175 Difference]: Start difference. First operand has 94 places, 101 transitions, 255 flow. Second operand 6 states and 3248 transitions. [2022-11-25 18:37:20,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 119 transitions, 565 flow [2022-11-25 18:37:20,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 119 transitions, 539 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:37:20,787 INFO L231 Difference]: Finished difference. Result has 100 places, 119 transitions, 422 flow [2022-11-25 18:37:20,788 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1303, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=422, PETRI_PLACES=100, PETRI_TRANSITIONS=119} [2022-11-25 18:37:20,789 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, -3 predicate places. [2022-11-25 18:37:20,789 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 119 transitions, 422 flow [2022-11-25 18:37:20,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 522.0) internal successors, (3132), 6 states have internal predecessors, (3132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:37:20,791 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:37:20,791 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 18:37:20,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-25 18:37:21,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:37:21,008 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-11-25 18:37:21,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:37:21,008 INFO L85 PathProgramCache]: Analyzing trace with hash -2099879388, now seen corresponding path program 1 times [2022-11-25 18:37:21,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:37:21,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1496690504] [2022-11-25 18:37:21,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:37:21,009 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:37:21,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:37:21,010 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:37:21,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-25 18:37:21,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:37:21,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:37:21,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:37:21,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-25 18:37:21,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:37:21,147 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:37:21,147 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:37:21,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1496690504] [2022-11-25 18:37:21,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1496690504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:37:21,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:37:21,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:37:21,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131957421] [2022-11-25 18:37:21,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:37:21,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:37:21,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:37:21,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:37:21,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:37:21,520 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 539 out of 1303 [2022-11-25 18:37:21,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 119 transitions, 422 flow. Second operand has 3 states, 3 states have (on average 540.6666666666666) internal successors, (1622), 3 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:37:21,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:37:21,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 539 of 1303 [2022-11-25 18:37:21,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:37:27,080 INFO L130 PetriNetUnfolder]: 28983/40212 cut-off events. [2022-11-25 18:37:27,080 INFO L131 PetriNetUnfolder]: For 86/86 co-relation queries the response was YES. [2022-11-25 18:37:27,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80678 conditions, 40212 events. 28983/40212 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 2189. Compared 247002 event pairs, 26445 based on Foata normal form. 0/12112 useless extension candidates. Maximal degree in co-relation 80666. Up to 40031 conditions per place. [2022-11-25 18:37:27,503 INFO L137 encePairwiseOnDemand]: 1299/1303 looper letters, 105 selfloop transitions, 5 changer transitions 0/116 dead transitions. [2022-11-25 18:37:27,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 116 transitions, 636 flow [2022-11-25 18:37:27,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:37:27,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:37:27,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1706 transitions. [2022-11-25 18:37:27,509 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43642875415707344 [2022-11-25 18:37:27,509 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1706 transitions. [2022-11-25 18:37:27,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1706 transitions. [2022-11-25 18:37:27,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:37:27,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1706 transitions. [2022-11-25 18:37:27,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 568.6666666666666) internal successors, (1706), 3 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:37:27,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1303.0) internal successors, (5212), 4 states have internal predecessors, (5212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:37:27,524 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1303.0) internal successors, (5212), 4 states have internal predecessors, (5212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:37:27,525 INFO L175 Difference]: Start difference. First operand has 100 places, 119 transitions, 422 flow. Second operand 3 states and 1706 transitions. [2022-11-25 18:37:27,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 116 transitions, 636 flow [2022-11-25 18:37:27,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 116 transitions, 599 flow, removed 12 selfloop flow, removed 1 redundant places. [2022-11-25 18:37:27,536 INFO L231 Difference]: Finished difference. Result has 98 places, 116 transitions, 389 flow [2022-11-25 18:37:27,536 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1303, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=389, PETRI_PLACES=98, PETRI_TRANSITIONS=116} [2022-11-25 18:37:27,538 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, -5 predicate places. [2022-11-25 18:37:27,538 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 116 transitions, 389 flow [2022-11-25 18:37:27,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 540.6666666666666) internal successors, (1622), 3 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:37:27,539 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:37:27,540 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 18:37:27,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-25 18:37:27,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:37:27,752 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-11-25 18:37:27,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:37:27,752 INFO L85 PathProgramCache]: Analyzing trace with hash -2099879387, now seen corresponding path program 1 times [2022-11-25 18:37:27,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:37:27,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1850631234] [2022-11-25 18:37:27,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:37:27,753 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:37:27,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:37:27,754 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:37:27,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-25 18:37:27,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:37:27,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 18:37:27,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:37:27,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 18:37:27,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:37:27,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:37:27,958 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:37:27,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1850631234] [2022-11-25 18:37:27,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1850631234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:37:27,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:37:27,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:37:27,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641843243] [2022-11-25 18:37:27,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:37:27,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:37:27,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:37:27,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:37:27,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:37:28,818 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 534 out of 1303 [2022-11-25 18:37:28,820 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 116 transitions, 389 flow. Second operand has 4 states, 4 states have (on average 535.25) internal successors, (2141), 4 states have internal predecessors, (2141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:37:28,820 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:37:28,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 534 of 1303 [2022-11-25 18:37:28,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:37:34,369 INFO L130 PetriNetUnfolder]: 28984/40214 cut-off events. [2022-11-25 18:37:34,369 INFO L131 PetriNetUnfolder]: For 94/94 co-relation queries the response was YES. [2022-11-25 18:37:34,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80669 conditions, 40214 events. 28984/40214 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 2195. Compared 246782 event pairs, 26445 based on Foata normal form. 0/12117 useless extension candidates. Maximal degree in co-relation 80657. Up to 40057 conditions per place. [2022-11-25 18:37:34,603 INFO L137 encePairwiseOnDemand]: 1298/1303 looper letters, 104 selfloop transitions, 8 changer transitions 0/118 dead transitions. [2022-11-25 18:37:34,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 118 transitions, 620 flow [2022-11-25 18:37:34,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:37:34,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:37:34,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2225 transitions. [2022-11-25 18:37:34,610 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4268994627782041 [2022-11-25 18:37:34,610 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2225 transitions. [2022-11-25 18:37:34,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2225 transitions. [2022-11-25 18:37:34,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:37:34,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2225 transitions. [2022-11-25 18:37:34,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 556.25) internal successors, (2225), 4 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:37:34,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1303.0) internal successors, (6515), 5 states have internal predecessors, (6515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:37:34,641 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1303.0) internal successors, (6515), 5 states have internal predecessors, (6515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:37:34,641 INFO L175 Difference]: Start difference. First operand has 98 places, 116 transitions, 389 flow. Second operand 4 states and 2225 transitions. [2022-11-25 18:37:34,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 118 transitions, 620 flow [2022-11-25 18:37:34,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 118 transitions, 615 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:37:34,645 INFO L231 Difference]: Finished difference. Result has 101 places, 118 transitions, 420 flow [2022-11-25 18:37:34,646 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1303, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=420, PETRI_PLACES=101, PETRI_TRANSITIONS=118} [2022-11-25 18:37:34,647 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, -2 predicate places. [2022-11-25 18:37:34,648 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 118 transitions, 420 flow [2022-11-25 18:37:34,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 535.25) internal successors, (2141), 4 states have internal predecessors, (2141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:37:34,650 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:37:34,650 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 18:37:34,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 18:37:34,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:37:34,862 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-11-25 18:37:34,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:37:34,862 INFO L85 PathProgramCache]: Analyzing trace with hash -671738308, now seen corresponding path program 1 times [2022-11-25 18:37:34,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:37:34,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2023939903] [2022-11-25 18:37:34,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:37:34,863 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:37:34,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:37:34,864 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:37:34,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-25 18:37:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:37:34,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 18:37:34,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:37:35,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 18:37:35,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:37:35,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:37:35,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:37:35,411 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:37:35,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2023939903] [2022-11-25 18:37:35,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2023939903] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:37:35,412 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:37:35,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-25 18:37:35,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856168369] [2022-11-25 18:37:35,412 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:37:35,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:37:35,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:37:35,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:37:35,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:37:40,351 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 519 out of 1303 [2022-11-25 18:37:40,353 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 118 transitions, 420 flow. Second operand has 7 states, 7 states have (on average 520.7142857142857) internal successors, (3645), 7 states have internal predecessors, (3645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:37:40,353 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:37:40,353 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 519 of 1303 [2022-11-25 18:37:40,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:37:41,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:37:43,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:37:50,215 INFO L130 PetriNetUnfolder]: 28995/40232 cut-off events. [2022-11-25 18:37:50,215 INFO L131 PetriNetUnfolder]: For 103/103 co-relation queries the response was YES. [2022-11-25 18:37:50,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80731 conditions, 40232 events. 28995/40232 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 2195. Compared 246772 event pairs, 26445 based on Foata normal form. 0/12127 useless extension candidates. Maximal degree in co-relation 80717. Up to 40033 conditions per place. [2022-11-25 18:37:50,411 INFO L137 encePairwiseOnDemand]: 1290/1303 looper letters, 104 selfloop transitions, 26 changer transitions 0/136 dead transitions. [2022-11-25 18:37:50,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 136 transitions, 737 flow [2022-11-25 18:37:50,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:37:50,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 18:37:50,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3746 transitions. [2022-11-25 18:37:50,420 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4107005810766363 [2022-11-25 18:37:50,420 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3746 transitions. [2022-11-25 18:37:50,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3746 transitions. [2022-11-25 18:37:50,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:37:50,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3746 transitions. [2022-11-25 18:37:50,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 535.1428571428571) internal successors, (3746), 7 states have internal predecessors, (3746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:37:50,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1303.0) internal successors, (10424), 8 states have internal predecessors, (10424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:37:50,446 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1303.0) internal successors, (10424), 8 states have internal predecessors, (10424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:37:50,446 INFO L175 Difference]: Start difference. First operand has 101 places, 118 transitions, 420 flow. Second operand 7 states and 3746 transitions. [2022-11-25 18:37:50,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 136 transitions, 737 flow [2022-11-25 18:37:50,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 136 transitions, 726 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-25 18:37:50,450 INFO L231 Difference]: Finished difference. Result has 108 places, 136 transitions, 578 flow [2022-11-25 18:37:50,451 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1303, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=578, PETRI_PLACES=108, PETRI_TRANSITIONS=136} [2022-11-25 18:37:50,451 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 5 predicate places. [2022-11-25 18:37:50,451 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 136 transitions, 578 flow [2022-11-25 18:37:50,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 520.7142857142857) internal successors, (3645), 7 states have internal predecessors, (3645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:37:50,453 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:37:50,453 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-11-25 18:37:50,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-25 18:37:50,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:37:50,665 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-11-25 18:37:50,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:37:50,665 INFO L85 PathProgramCache]: Analyzing trace with hash -855983424, now seen corresponding path program 2 times [2022-11-25 18:37:50,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:37:50,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1321467861] [2022-11-25 18:37:50,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:37:50,666 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:37:50,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:37:50,671 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:37:50,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-25 18:37:50,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:37:50,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:37:50,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 18:37:50,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:37:50,933 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-25 18:37:50,934 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 [2022-11-25 18:37:51,114 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:37:51,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:37:51,839 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:37:51,840 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:37:51,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1321467861] [2022-11-25 18:37:51,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1321467861] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:37:51,840 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:37:51,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-25 18:37:51,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280666151] [2022-11-25 18:37:51,841 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:37:51,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 18:37:51,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:37:51,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 18:37:51,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-25 18:38:07,198 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 524 out of 1303 [2022-11-25 18:38:07,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 136 transitions, 578 flow. Second operand has 12 states, 12 states have (on average 525.0) internal successors, (6300), 12 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:38:07,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:38:07,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 524 of 1303 [2022-11-25 18:38:07,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:38:10,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:38:12,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:38:13,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:38:15,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:38:17,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:38:19,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:38:21,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:38:23,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:38:28,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:38:29,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:38:31,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:38:40,280 INFO L130 PetriNetUnfolder]: 29017/40278 cut-off events. [2022-11-25 18:38:40,280 INFO L131 PetriNetUnfolder]: For 181/181 co-relation queries the response was YES. [2022-11-25 18:38:40,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80989 conditions, 40278 events. 29017/40278 cut-off events. For 181/181 co-relation queries the response was YES. Maximal size of possible extension queue 2197. Compared 246245 event pairs, 26445 based on Foata normal form. 16/12186 useless extension candidates. Maximal degree in co-relation 80972. Up to 40055 conditions per place. [2022-11-25 18:38:40,485 INFO L137 encePairwiseOnDemand]: 1292/1303 looper letters, 107 selfloop transitions, 69 changer transitions 0/182 dead transitions. [2022-11-25 18:38:40,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 182 transitions, 1257 flow [2022-11-25 18:38:40,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 18:38:40,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-25 18:38:40,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 8024 transitions. [2022-11-25 18:38:40,497 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4105397799948836 [2022-11-25 18:38:40,498 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 8024 transitions. [2022-11-25 18:38:40,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 8024 transitions. [2022-11-25 18:38:40,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:38:40,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 8024 transitions. [2022-11-25 18:38:40,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 534.9333333333333) internal successors, (8024), 15 states have internal predecessors, (8024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:38:40,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 1303.0) internal successors, (20848), 16 states have internal predecessors, (20848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:38:40,549 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 1303.0) internal successors, (20848), 16 states have internal predecessors, (20848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:38:40,549 INFO L175 Difference]: Start difference. First operand has 108 places, 136 transitions, 578 flow. Second operand 15 states and 8024 transitions. [2022-11-25 18:38:40,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 182 transitions, 1257 flow [2022-11-25 18:38:40,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 182 transitions, 1214 flow, removed 14 selfloop flow, removed 2 redundant places. [2022-11-25 18:38:40,555 INFO L231 Difference]: Finished difference. Result has 128 places, 175 transitions, 1061 flow [2022-11-25 18:38:40,556 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1303, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1061, PETRI_PLACES=128, PETRI_TRANSITIONS=175} [2022-11-25 18:38:40,556 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 25 predicate places. [2022-11-25 18:38:40,557 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 175 transitions, 1061 flow [2022-11-25 18:38:40,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 525.0) internal successors, (6300), 12 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:38:40,558 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:38:40,559 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:38:40,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-25 18:38:40,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:38:40,771 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-11-25 18:38:40,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:38:40,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1291259225, now seen corresponding path program 1 times [2022-11-25 18:38:40,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:38:40,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [920681897] [2022-11-25 18:38:40,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:38:40,772 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:38:40,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:38:40,773 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:38:40,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-25 18:38:40,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:38:40,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 18:38:40,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:38:40,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:38:40,942 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:38:40,943 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:38:40,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [920681897] [2022-11-25 18:38:40,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [920681897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:38:40,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:38:40,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:38:40,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979800263] [2022-11-25 18:38:40,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:38:40,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:38:40,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:38:40,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:38:40,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:38:41,128 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 542 out of 1303 [2022-11-25 18:38:41,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 175 transitions, 1061 flow. Second operand has 3 states, 3 states have (on average 544.6666666666666) internal successors, (1634), 3 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:38:41,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:38:41,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 542 of 1303 [2022-11-25 18:38:41,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:38:47,232 INFO L130 PetriNetUnfolder]: 29016/40277 cut-off events. [2022-11-25 18:38:47,233 INFO L131 PetriNetUnfolder]: For 271/271 co-relation queries the response was YES. [2022-11-25 18:38:47,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81105 conditions, 40277 events. 29016/40277 cut-off events. For 271/271 co-relation queries the response was YES. Maximal size of possible extension queue 2218. Compared 246127 event pairs, 26445 based on Foata normal form. 1/12179 useless extension candidates. Maximal degree in co-relation 81079. Up to 40125 conditions per place. [2022-11-25 18:38:47,528 INFO L137 encePairwiseOnDemand]: 1300/1303 looper letters, 166 selfloop transitions, 2 changer transitions 0/174 dead transitions. [2022-11-25 18:38:47,528 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 174 transitions, 1393 flow [2022-11-25 18:38:47,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:38:47,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:38:47,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1714 transitions. [2022-11-25 18:38:47,531 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4384753133793809 [2022-11-25 18:38:47,532 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1714 transitions. [2022-11-25 18:38:47,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1714 transitions. [2022-11-25 18:38:47,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:38:47,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1714 transitions. [2022-11-25 18:38:47,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 571.3333333333334) internal successors, (1714), 3 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:38:47,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1303.0) internal successors, (5212), 4 states have internal predecessors, (5212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:38:47,543 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1303.0) internal successors, (5212), 4 states have internal predecessors, (5212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:38:47,543 INFO L175 Difference]: Start difference. First operand has 128 places, 175 transitions, 1061 flow. Second operand 3 states and 1714 transitions. [2022-11-25 18:38:47,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 174 transitions, 1393 flow [2022-11-25 18:38:47,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 174 transitions, 1245 flow, removed 39 selfloop flow, removed 4 redundant places. [2022-11-25 18:38:47,553 INFO L231 Difference]: Finished difference. Result has 126 places, 174 transitions, 913 flow [2022-11-25 18:38:47,553 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1303, PETRI_DIFFERENCE_MINUEND_FLOW=909, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=913, PETRI_PLACES=126, PETRI_TRANSITIONS=174} [2022-11-25 18:38:47,554 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 23 predicate places. [2022-11-25 18:38:47,554 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 174 transitions, 913 flow [2022-11-25 18:38:47,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 544.6666666666666) internal successors, (1634), 3 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:38:47,555 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:38:47,555 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:38:47,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-25 18:38:47,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:38:47,768 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-11-25 18:38:47,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:38:47,768 INFO L85 PathProgramCache]: Analyzing trace with hash -396199746, now seen corresponding path program 1 times [2022-11-25 18:38:47,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:38:47,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684350215] [2022-11-25 18:38:47,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:38:47,769 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:38:47,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:38:47,770 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:38:47,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a133dc59-1a58-4fe7-b13b-aa7b477f89fc/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-25 18:38:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:38:47,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 18:38:47,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:38:48,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:38:48,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:38:48,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:38:48,276 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:38:48,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684350215] [2022-11-25 18:38:48,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1684350215] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:38:48,276 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:38:48,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-25 18:38:48,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210859296] [2022-11-25 18:38:48,276 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:38:48,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 18:38:48,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:38:48,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 18:38:48,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-25 18:38:50,824 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 516 out of 1303 [2022-11-25 18:38:50,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 174 transitions, 913 flow. Second operand has 10 states, 10 states have (on average 517.5) internal successors, (5175), 10 states have internal predecessors, (5175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:38:50,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:38:50,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 516 of 1303 [2022-11-25 18:38:50,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand