./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 22:20:30,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 22:20:30,601 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 22:20:30,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 22:20:30,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 22:20:30,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 22:20:30,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 22:20:30,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 22:20:30,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 22:20:30,625 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 22:20:30,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 22:20:30,627 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 22:20:30,627 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 22:20:30,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 22:20:30,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 22:20:30,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 22:20:30,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 22:20:30,632 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 22:20:30,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 22:20:30,635 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 22:20:30,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 22:20:30,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 22:20:30,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 22:20:30,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 22:20:30,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 22:20:30,642 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 22:20:30,642 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 22:20:30,643 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 22:20:30,643 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 22:20:30,644 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 22:20:30,644 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 22:20:30,645 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 22:20:30,646 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 22:20:30,646 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 22:20:30,647 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 22:20:30,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 22:20:30,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 22:20:30,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 22:20:30,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 22:20:30,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 22:20:30,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 22:20:30,650 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 22:20:30,669 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 22:20:30,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 22:20:30,669 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 22:20:30,670 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 22:20:30,670 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 22:20:30,670 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 22:20:30,671 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 22:20:30,671 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 22:20:30,671 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 22:20:30,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 22:20:30,672 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 22:20:30,672 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 22:20:30,672 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 22:20:30,672 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 22:20:30,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 22:20:30,673 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 22:20:30,673 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 22:20:30,673 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 22:20:30,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 22:20:30,673 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 22:20:30,674 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 22:20:30,674 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 22:20:30,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 22:20:30,674 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 22:20:30,674 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 22:20:30,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:20:30,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 22:20:30,675 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 22:20:30,675 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 22:20:30,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 22:20:30,676 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 22:20:30,676 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 22:20:30,676 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 22:20:30,676 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 22:20:30,676 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_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d [2022-12-13 22:20:30,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 22:20:30,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 22:20:30,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 22:20:30,892 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 22:20:30,893 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 22:20:30,894 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2022-12-13 22:20:33,425 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 22:20:33,594 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 22:20:33,594 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2022-12-13 22:20:33,600 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/data/39c808472/be5680d6f4af4660b351781b1d349b8e/FLAG3a13bbc42 [2022-12-13 22:20:33,981 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/data/39c808472/be5680d6f4af4660b351781b1d349b8e [2022-12-13 22:20:33,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 22:20:33,984 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 22:20:33,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 22:20:33,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 22:20:33,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 22:20:33,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:20:33" (1/1) ... [2022-12-13 22:20:33,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27ea928f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:20:33, skipping insertion in model container [2022-12-13 22:20:33,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:20:33" (1/1) ... [2022-12-13 22:20:33,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 22:20:34,011 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 22:20:34,120 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:34,122 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:34,123 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:34,124 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:34,124 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:34,125 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:34,125 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:34,126 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:34,126 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:34,127 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:34,127 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:34,128 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:34,131 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:34,132 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:34,132 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:34,133 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:34,134 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:34,135 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:34,135 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:34,136 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:34,136 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:34,137 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:34,137 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:34,138 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:34,146 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_566cbe00-47ef-4f02-b7e0-c052f2689f6c/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-12-13 22:20:34,153 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:20:34,161 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-12-13 22:20:34,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4a3f23f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:20:34, skipping insertion in model container [2022-12-13 22:20:34,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 22:20:34,162 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-13 22:20:34,163 INFO L158 Benchmark]: Toolchain (without parser) took 178.87ms. Allocated memory is still 121.6MB. Free memory was 90.7MB in the beginning and 78.6MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 22:20:34,163 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 121.6MB. Free memory is still 97.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 22:20:34,164 INFO L158 Benchmark]: CACSL2BoogieTranslator took 176.77ms. Allocated memory is still 121.6MB. Free memory was 90.3MB in the beginning and 78.6MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 22:20:34,165 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 121.6MB. Free memory is still 97.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 176.77ms. Allocated memory is still 121.6MB. Free memory was 90.3MB in the beginning and 78.6MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 195]: 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_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 22:20:35,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 22:20:35,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 22:20:35,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 22:20:35,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 22:20:35,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 22:20:35,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 22:20:35,560 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 22:20:35,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 22:20:35,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 22:20:35,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 22:20:35,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 22:20:35,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 22:20:35,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 22:20:35,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 22:20:35,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 22:20:35,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 22:20:35,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 22:20:35,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 22:20:35,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 22:20:35,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 22:20:35,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 22:20:35,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 22:20:35,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 22:20:35,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 22:20:35,581 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 22:20:35,581 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 22:20:35,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 22:20:35,582 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 22:20:35,584 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 22:20:35,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 22:20:35,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 22:20:35,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 22:20:35,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 22:20:35,587 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 22:20:35,591 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 22:20:35,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 22:20:35,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 22:20:35,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 22:20:35,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 22:20:35,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 22:20:35,595 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-12-13 22:20:35,611 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 22:20:35,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 22:20:35,611 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 22:20:35,611 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 22:20:35,612 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 22:20:35,612 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 22:20:35,612 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 22:20:35,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 22:20:35,613 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 22:20:35,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 22:20:35,613 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 22:20:35,613 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 22:20:35,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 22:20:35,613 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 22:20:35,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 22:20:35,614 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 22:20:35,614 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 22:20:35,614 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 22:20:35,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 22:20:35,614 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 22:20:35,615 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 22:20:35,615 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 22:20:35,615 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 22:20:35,615 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 22:20:35,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 22:20:35,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 22:20:35,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 22:20:35,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:20:35,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 22:20:35,616 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 22:20:35,616 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 22:20:35,617 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 22:20:35,617 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 22:20:35,617 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 22:20:35,617 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 22:20:35,617 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 22:20:35,617 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 22:20:35,618 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_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d [2022-12-13 22:20:35,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 22:20:35,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 22:20:35,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 22:20:35,835 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 22:20:35,836 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 22:20:35,837 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2022-12-13 22:20:38,465 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 22:20:38,614 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 22:20:38,614 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2022-12-13 22:20:38,620 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/data/bf0498295/24d9de5c788e47529bb80731177635f4/FLAG5264aaabd [2022-12-13 22:20:38,631 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/data/bf0498295/24d9de5c788e47529bb80731177635f4 [2022-12-13 22:20:38,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 22:20:38,634 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 22:20:38,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 22:20:38,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 22:20:38,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 22:20:38,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:20:38" (1/1) ... [2022-12-13 22:20:38,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@492e62e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:20:38, skipping insertion in model container [2022-12-13 22:20:38,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:20:38" (1/1) ... [2022-12-13 22:20:38,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 22:20:38,661 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 22:20:38,777 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:38,780 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:38,781 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:38,782 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:38,782 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:38,783 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:38,783 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:38,784 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:38,784 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:38,785 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:38,786 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:38,786 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:38,789 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:38,790 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:38,790 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:38,791 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:38,792 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:38,793 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:38,794 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:38,794 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:38,795 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:38,796 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:38,796 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:38,797 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:38,804 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_566cbe00-47ef-4f02-b7e0-c052f2689f6c/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-12-13 22:20:38,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:20:38,822 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-13 22:20:38,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 22:20:38,829 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:38,830 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:38,830 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:38,831 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:38,831 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:38,832 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:38,832 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:38,833 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:38,833 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:38,834 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:38,835 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:38,835 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:38,836 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:38,837 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:38,837 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:38,838 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:38,838 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:38,839 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:38,840 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:38,840 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:38,841 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:38,842 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:38,842 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:38,843 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:38,846 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_566cbe00-47ef-4f02-b7e0-c052f2689f6c/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-12-13 22:20:38,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:20:38,852 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 22:20:38,862 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:38,863 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:38,863 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:38,863 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:38,864 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:38,864 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:38,864 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:38,865 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:38,865 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:38,866 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:38,866 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:38,867 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:38,867 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:38,868 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:38,868 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:38,869 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:38,869 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:38,870 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:38,870 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:38,871 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:38,871 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:38,872 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:38,872 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:38,872 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:38,876 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_566cbe00-47ef-4f02-b7e0-c052f2689f6c/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-12-13 22:20:38,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:20:38,889 INFO L208 MainTranslator]: Completed translation [2022-12-13 22:20:38,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:20:38 WrapperNode [2022-12-13 22:20:38,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 22:20:38,891 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 22:20:38,891 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 22:20:38,891 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 22:20:38,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:20:38" (1/1) ... [2022-12-13 22:20:38,905 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:20:38" (1/1) ... [2022-12-13 22:20:38,929 INFO L138 Inliner]: procedures = 28, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 442 [2022-12-13 22:20:38,929 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 22:20:38,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 22:20:38,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 22:20:38,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 22:20:38,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:20:38" (1/1) ... [2022-12-13 22:20:38,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:20:38" (1/1) ... [2022-12-13 22:20:38,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:20:38" (1/1) ... [2022-12-13 22:20:38,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:20:38" (1/1) ... [2022-12-13 22:20:38,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:20:38" (1/1) ... [2022-12-13 22:20:38,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:20:38" (1/1) ... [2022-12-13 22:20:38,954 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:20:38" (1/1) ... [2022-12-13 22:20:38,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:20:38" (1/1) ... [2022-12-13 22:20:38,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 22:20:38,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 22:20:38,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 22:20:38,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 22:20:38,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:20:38" (1/1) ... [2022-12-13 22:20:38,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:20:38,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:20:38,981 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 22:20:38,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 22:20:39,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 22:20:39,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 22:20:39,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 22:20:39,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-13 22:20:39,007 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 22:20:39,007 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 22:20:39,007 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 22:20:39,007 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 22:20:39,008 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 22:20:39,008 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 22:20:39,008 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-13 22:20:39,008 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-13 22:20:39,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 22:20:39,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 22:20:39,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 22:20:39,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 22:20:39,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 22:20:39,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 22:20:39,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-13 22:20:39,011 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 22:20:39,115 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 22:20:39,117 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 22:20:39,868 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 22:20:40,100 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 22:20:40,100 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-12-13 22:20:40,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:20:40 BoogieIcfgContainer [2022-12-13 22:20:40,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 22:20:40,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 22:20:40,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 22:20:40,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 22:20:40,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:20:38" (1/3) ... [2022-12-13 22:20:40,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f3c30c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:20:40, skipping insertion in model container [2022-12-13 22:20:40,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:20:38" (2/3) ... [2022-12-13 22:20:40,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f3c30c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:20:40, skipping insertion in model container [2022-12-13 22:20:40,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:20:40" (3/3) ... [2022-12-13 22:20:40,108 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2022-12-13 22:20:40,122 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 22:20:40,122 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2022-12-13 22:20:40,122 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 22:20:40,217 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 22:20:40,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 354 places, 366 transitions, 764 flow [2022-12-13 22:20:40,369 INFO L130 PetriNetUnfolder]: 25/362 cut-off events. [2022-12-13 22:20:40,369 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 22:20:40,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 362 events. 25/362 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 383 event pairs, 0 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 307. Up to 2 conditions per place. [2022-12-13 22:20:40,374 INFO L82 GeneralOperation]: Start removeDead. Operand has 354 places, 366 transitions, 764 flow [2022-12-13 22:20:40,379 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 345 places, 357 transitions, 738 flow [2022-12-13 22:20:40,382 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 22:20:40,389 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 345 places, 357 transitions, 738 flow [2022-12-13 22:20:40,392 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 345 places, 357 transitions, 738 flow [2022-12-13 22:20:40,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 345 places, 357 transitions, 738 flow [2022-12-13 22:20:40,444 INFO L130 PetriNetUnfolder]: 25/357 cut-off events. [2022-12-13 22:20:40,444 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 22:20:40,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 374 conditions, 357 events. 25/357 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 384 event pairs, 0 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 307. Up to 2 conditions per place. [2022-12-13 22:20:40,447 INFO L119 LiptonReduction]: Number of co-enabled transitions 6208 [2022-12-13 22:21:25,410 INFO L134 LiptonReduction]: Checked pairs total: 22978 [2022-12-13 22:21:25,410 INFO L136 LiptonReduction]: Total number of compositions: 371 [2022-12-13 22:21:25,420 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 22:21:25,424 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;@380e912b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 22:21:25,424 INFO L358 AbstractCegarLoop]: Starting to check reachability of 78 error locations. [2022-12-13 22:21:25,426 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 22:21:25,426 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 22:21:25,426 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:21:25,427 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 22:21:25,427 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-12-13 22:21:25,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:21:25,431 INFO L85 PathProgramCache]: Analyzing trace with hash 60504, now seen corresponding path program 1 times [2022-12-13 22:21:25,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:21:25,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1271368084] [2022-12-13 22:21:25,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:21:25,443 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:21:25,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:21:25,445 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 22:21:25,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-13 22:21:25,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:21:25,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 22:21:25,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:21:25,702 INFO L321 Elim1Store]: treesize reduction 150, result has 29.6 percent of original size [2022-12-13 22:21:25,703 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 4 case distinctions, treesize of input 18 treesize of output 70 [2022-12-13 22:21:25,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:21:25,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:21:25,733 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:21:25,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1271368084] [2022-12-13 22:21:25,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1271368084] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:21:25,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:21:25,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 22:21:25,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129500121] [2022-12-13 22:21:25,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:21:25,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:21:25,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:21:25,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:21:25,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:21:25,941 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 737 [2022-12-13 22:21:25,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 90 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:21:25,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:21:25,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 737 [2022-12-13 22:21:25,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:21:41,863 INFO L130 PetriNetUnfolder]: 114608/146617 cut-off events. [2022-12-13 22:21:41,863 INFO L131 PetriNetUnfolder]: For 996/996 co-relation queries the response was YES. [2022-12-13 22:21:42,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295808 conditions, 146617 events. 114608/146617 cut-off events. For 996/996 co-relation queries the response was YES. Maximal size of possible extension queue 5485. Compared 817206 event pairs, 100044 based on Foata normal form. 0/45009 useless extension candidates. Maximal degree in co-relation 283100. Up to 146617 conditions per place. [2022-12-13 22:21:42,512 INFO L137 encePairwiseOnDemand]: 731/737 looper letters, 84 selfloop transitions, 1 changer transitions 0/85 dead transitions. [2022-12-13 22:21:42,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 85 transitions, 364 flow [2022-12-13 22:21:42,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:21:42,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:21:42,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 942 transitions. [2022-12-13 22:21:42,525 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4260515603799186 [2022-12-13 22:21:42,526 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 942 transitions. [2022-12-13 22:21:42,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 942 transitions. [2022-12-13 22:21:42,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:21:42,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 942 transitions. [2022-12-13 22:21:42,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 314.0) internal successors, (942), 3 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:21:42,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 737.0) internal successors, (2948), 4 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:21:42,540 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 737.0) internal successors, (2948), 4 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:21:42,541 INFO L175 Difference]: Start difference. First operand has 95 places, 90 transitions, 204 flow. Second operand 3 states and 942 transitions. [2022-12-13 22:21:42,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 85 transitions, 364 flow [2022-12-13 22:21:42,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 85 transitions, 348 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-12-13 22:21:42,902 INFO L231 Difference]: Finished difference. Result has 84 places, 85 transitions, 180 flow [2022-12-13 22:21:42,904 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=737, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=84, PETRI_TRANSITIONS=85} [2022-12-13 22:21:42,906 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, -11 predicate places. [2022-12-13 22:21:42,906 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 85 transitions, 180 flow [2022-12-13 22:21:42,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:21:42,907 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:21:42,907 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 22:21:42,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-13 22:21:43,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:21:43,109 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-12-13 22:21:43,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:21:43,110 INFO L85 PathProgramCache]: Analyzing trace with hash 60505, now seen corresponding path program 1 times [2022-12-13 22:21:43,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:21:43,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2104988046] [2022-12-13 22:21:43,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:21:43,112 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:21:43,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:21:43,115 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 22:21:43,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-13 22:21:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:21:43,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 22:21:43,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:21:43,335 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-12-13 22:21:43,336 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 4 case distinctions, treesize of input 20 treesize of output 62 [2022-12-13 22:21:43,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:21:43,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:21:43,366 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:21:43,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2104988046] [2022-12-13 22:21:43,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2104988046] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:21:43,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:21:43,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 22:21:43,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201735706] [2022-12-13 22:21:43,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:21:43,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:21:43,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:21:43,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:21:43,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:21:43,632 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 737 [2022-12-13 22:21:43,634 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 85 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:21:43,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:21:43,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 737 [2022-12-13 22:21:43,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:22:09,975 INFO L130 PetriNetUnfolder]: 229215/293229 cut-off events. [2022-12-13 22:22:09,975 INFO L131 PetriNetUnfolder]: For 196/196 co-relation queries the response was YES. [2022-12-13 22:22:10,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 588630 conditions, 293229 events. 229215/293229 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 10004. Compared 1764090 event pairs, 200088 based on Foata normal form. 0/90017 useless extension candidates. Maximal degree in co-relation 588624. Up to 146618 conditions per place. [2022-12-13 22:22:11,102 INFO L137 encePairwiseOnDemand]: 725/737 looper letters, 157 selfloop transitions, 8 changer transitions 0/165 dead transitions. [2022-12-13 22:22:11,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 165 transitions, 678 flow [2022-12-13 22:22:11,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:22:11,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:22:11,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1021 transitions. [2022-12-13 22:22:11,105 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46178199909543194 [2022-12-13 22:22:11,106 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1021 transitions. [2022-12-13 22:22:11,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1021 transitions. [2022-12-13 22:22:11,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:22:11,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1021 transitions. [2022-12-13 22:22:11,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 340.3333333333333) internal successors, (1021), 3 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:22:11,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 737.0) internal successors, (2948), 4 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:22:11,112 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 737.0) internal successors, (2948), 4 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:22:11,112 INFO L175 Difference]: Start difference. First operand has 84 places, 85 transitions, 180 flow. Second operand 3 states and 1021 transitions. [2022-12-13 22:22:11,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 165 transitions, 678 flow [2022-12-13 22:22:11,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 165 transitions, 677 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 22:22:11,115 INFO L231 Difference]: Finished difference. Result has 87 places, 92 transitions, 247 flow [2022-12-13 22:22:11,115 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=737, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=247, PETRI_PLACES=87, PETRI_TRANSITIONS=92} [2022-12-13 22:22:11,116 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, -8 predicate places. [2022-12-13 22:22:11,116 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 92 transitions, 247 flow [2022-12-13 22:22:11,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:22:11,117 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:22:11,117 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 22:22:11,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-13 22:22:11,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:22:11,319 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-12-13 22:22:11,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:22:11,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1882003, now seen corresponding path program 1 times [2022-12-13 22:22:11,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:22:11,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482598611] [2022-12-13 22:22:11,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:22:11,322 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:22:11,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:22:11,325 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 22:22:11,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-13 22:22:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:22:11,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 22:22:11,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:22:11,587 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-12-13 22:22:11,588 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 4 case distinctions, treesize of input 20 treesize of output 62 [2022-12-13 22:22:11,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:22:11,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:22:11,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:22:11,833 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:22:11,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482598611] [2022-12-13 22:22:11,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482598611] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:22:11,833 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 22:22:11,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-12-13 22:22:11,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955966137] [2022-12-13 22:22:11,834 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 22:22:11,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 22:22:11,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:22:11,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 22:22:11,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 22:22:12,948 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 737 [2022-12-13 22:22:12,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 92 transitions, 247 flow. Second operand has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:22:12,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:22:12,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 737 [2022-12-13 22:22:12,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:22:55,720 INFO L130 PetriNetUnfolder]: 343834/439861 cut-off events. [2022-12-13 22:22:55,720 INFO L131 PetriNetUnfolder]: For 294/294 co-relation queries the response was YES. [2022-12-13 22:22:56,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 883036 conditions, 439861 events. 343834/439861 cut-off events. For 294/294 co-relation queries the response was YES. Maximal size of possible extension queue 14408. Compared 2751905 event pairs, 300132 based on Foata normal form. 0/135053 useless extension candidates. Maximal degree in co-relation 883027. Up to 146621 conditions per place. [2022-12-13 22:22:57,514 INFO L137 encePairwiseOnDemand]: 722/737 looper letters, 230 selfloop transitions, 35 changer transitions 0/265 dead transitions. [2022-12-13 22:22:57,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 265 transitions, 1199 flow [2022-12-13 22:22:57,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 22:22:57,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 22:22:57,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1861 transitions. [2022-12-13 22:22:57,524 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42085029398462237 [2022-12-13 22:22:57,524 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1861 transitions. [2022-12-13 22:22:57,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1861 transitions. [2022-12-13 22:22:57,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:22:57,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1861 transitions. [2022-12-13 22:22:57,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 310.1666666666667) internal successors, (1861), 6 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:22:57,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 737.0) internal successors, (5159), 7 states have internal predecessors, (5159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:22:57,546 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 737.0) internal successors, (5159), 7 states have internal predecessors, (5159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:22:57,547 INFO L175 Difference]: Start difference. First operand has 87 places, 92 transitions, 247 flow. Second operand 6 states and 1861 transitions. [2022-12-13 22:22:57,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 265 transitions, 1199 flow [2022-12-13 22:22:57,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 265 transitions, 1165 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 22:22:57,550 INFO L231 Difference]: Finished difference. Result has 94 places, 119 transitions, 494 flow [2022-12-13 22:22:57,550 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=737, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=494, PETRI_PLACES=94, PETRI_TRANSITIONS=119} [2022-12-13 22:22:57,551 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, -1 predicate places. [2022-12-13 22:22:57,551 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 119 transitions, 494 flow [2022-12-13 22:22:57,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:22:57,551 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:22:57,552 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 22:22:57,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-13 22:22:57,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:22:57,753 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-12-13 22:22:57,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:22:57,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1811302669, now seen corresponding path program 1 times [2022-12-13 22:22:57,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:22:57,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346143596] [2022-12-13 22:22:57,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:22:57,757 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:22:57,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:22:57,760 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 22:22:57,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-13 22:22:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:22:57,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 22:22:57,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:22:57,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:22:57,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:22:57,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:22:57,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:22:57,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:22:57,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:22:57,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:22:58,137 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-13 22:22:58,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 38 [2022-12-13 22:22:58,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:22:58,286 INFO L321 Elim1Store]: treesize reduction 186, result has 15.1 percent of original size [2022-12-13 22:22:58,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 73 [2022-12-13 22:22:58,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:22:58,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 22:22:58,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:22:58,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:22:58,485 INFO L321 Elim1Store]: treesize reduction 38, result has 25.5 percent of original size [2022-12-13 22:22:58,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 36 [2022-12-13 22:22:58,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:22:58,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 22:22:58,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:22:58,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 22:22:58,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:22:58,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:22:58,665 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:22:58,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1346143596] [2022-12-13 22:22:58,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1346143596] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:22:58,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:22:58,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:22:58,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983486919] [2022-12-13 22:22:58,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:22:58,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 22:22:58,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:22:58,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 22:22:58,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:22:59,835 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 737 [2022-12-13 22:22:59,836 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 119 transitions, 494 flow. Second operand has 5 states, 5 states have (on average 288.0) internal successors, (1440), 5 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:22:59,836 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:22:59,836 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 737 [2022-12-13 22:22:59,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:23:24,486 INFO L130 PetriNetUnfolder]: 187422/244341 cut-off events. [2022-12-13 22:23:24,486 INFO L131 PetriNetUnfolder]: For 304/304 co-relation queries the response was YES. [2022-12-13 22:23:24,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492062 conditions, 244341 events. 187422/244341 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 8703. Compared 1531150 event pairs, 162540 based on Foata normal form. 0/89190 useless extension candidates. Maximal degree in co-relation 492049. Up to 244341 conditions per place. [2022-12-13 22:23:25,583 INFO L137 encePairwiseOnDemand]: 732/737 looper letters, 110 selfloop transitions, 1 changer transitions 0/111 dead transitions. [2022-12-13 22:23:25,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 111 transitions, 676 flow [2022-12-13 22:23:25,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:23:25,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:23:25,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 946 transitions. [2022-12-13 22:23:25,586 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42786069651741293 [2022-12-13 22:23:25,586 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 946 transitions. [2022-12-13 22:23:25,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 946 transitions. [2022-12-13 22:23:25,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:23:25,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 946 transitions. [2022-12-13 22:23:25,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 315.3333333333333) internal successors, (946), 3 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:23:25,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 737.0) internal successors, (2948), 4 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:23:25,591 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 737.0) internal successors, (2948), 4 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:23:25,591 INFO L175 Difference]: Start difference. First operand has 94 places, 119 transitions, 494 flow. Second operand 3 states and 946 transitions. [2022-12-13 22:23:25,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 111 transitions, 676 flow [2022-12-13 22:23:25,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 111 transitions, 635 flow, removed 12 selfloop flow, removed 1 redundant places. [2022-12-13 22:23:25,593 INFO L231 Difference]: Finished difference. Result has 91 places, 111 transitions, 415 flow [2022-12-13 22:23:25,594 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=737, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=415, PETRI_PLACES=91, PETRI_TRANSITIONS=111} [2022-12-13 22:23:25,594 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, -4 predicate places. [2022-12-13 22:23:25,594 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 111 transitions, 415 flow [2022-12-13 22:23:25,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 288.0) internal successors, (1440), 5 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:23:25,595 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:23:25,595 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 22:23:25,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-13 22:23:25,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:23:25,797 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-12-13 22:23:25,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:23:25,798 INFO L85 PathProgramCache]: Analyzing trace with hash 238480089, now seen corresponding path program 2 times [2022-12-13 22:23:25,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:23:25,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1210106181] [2022-12-13 22:23:25,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 22:23:25,800 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:23:25,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:23:25,803 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 22:23:25,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-13 22:23:25,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 22:23:25,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:23:25,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 22:23:25,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:23:26,103 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-12-13 22:23:26,104 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 4 case distinctions, treesize of input 20 treesize of output 62 [2022-12-13 22:23:26,223 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:23:26,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:23:26,795 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:23:26,795 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:23:26,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1210106181] [2022-12-13 22:23:26,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1210106181] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:23:26,795 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 22:23:26,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-12-13 22:23:26,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388306602] [2022-12-13 22:23:26,796 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 22:23:26,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 22:23:26,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:23:26,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 22:23:26,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-12-13 22:23:32,603 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 737 [2022-12-13 22:23:32,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 111 transitions, 415 flow. Second operand has 12 states, 12 states have (on average 269.0) internal successors, (3228), 12 states have internal predecessors, (3228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:23:32,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:23:32,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 737 [2022-12-13 22:23:32,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:23:35,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:23:37,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:23:39,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:23:42,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:23:44,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:23:46,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:23:48,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:23:50,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:23:52,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:23:54,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:23:56,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:23:59,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:24:02,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:24:04,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:24:06,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:25:44,808 INFO L130 PetriNetUnfolder]: 624715/814417 cut-off events. [2022-12-13 22:25:44,808 INFO L131 PetriNetUnfolder]: For 1067/1067 co-relation queries the response was YES. [2022-12-13 22:25:46,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1639891 conditions, 814417 events. 624715/814417 cut-off events. For 1067/1067 co-relation queries the response was YES. Maximal size of possible extension queue 19993. Compared 5560178 event pairs, 541800 based on Foata normal form. 20/297256 useless extension candidates. Maximal degree in co-relation 1639877. Up to 81467 conditions per place. [2022-12-13 22:25:48,569 INFO L137 encePairwiseOnDemand]: 724/737 looper letters, 704 selfloop transitions, 73 changer transitions 0/777 dead transitions. [2022-12-13 22:25:48,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 777 transitions, 3605 flow [2022-12-13 22:25:48,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 22:25:48,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-13 22:25:48,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5353 transitions. [2022-12-13 22:25:48,580 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42724878282384865 [2022-12-13 22:25:48,580 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5353 transitions. [2022-12-13 22:25:48,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5353 transitions. [2022-12-13 22:25:48,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:25:48,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5353 transitions. [2022-12-13 22:25:48,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 314.88235294117646) internal successors, (5353), 17 states have internal predecessors, (5353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:25:48,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 737.0) internal successors, (13266), 18 states have internal predecessors, (13266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:25:48,602 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 737.0) internal successors, (13266), 18 states have internal predecessors, (13266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:25:48,602 INFO L175 Difference]: Start difference. First operand has 91 places, 111 transitions, 415 flow. Second operand 17 states and 5353 transitions. [2022-12-13 22:25:48,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 777 transitions, 3605 flow [2022-12-13 22:25:48,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 777 transitions, 3604 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 22:25:48,610 INFO L231 Difference]: Finished difference. Result has 117 places, 155 transitions, 951 flow [2022-12-13 22:25:48,610 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=737, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=951, PETRI_PLACES=117, PETRI_TRANSITIONS=155} [2022-12-13 22:25:48,611 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 22 predicate places. [2022-12-13 22:25:48,611 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 155 transitions, 951 flow [2022-12-13 22:25:48,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 269.0) internal successors, (3228), 12 states have internal predecessors, (3228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:25:48,612 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:25:48,612 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:25:48,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-13 22:25:48,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:25:48,813 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-12-13 22:25:48,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:25:48,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1200157192, now seen corresponding path program 1 times [2022-12-13 22:25:48,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:25:48,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1218444496] [2022-12-13 22:25:48,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:48,817 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:25:48,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:25:48,820 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 22:25:48,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-13 22:25:48,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:25:48,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 22:25:48,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:25:49,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:25:49,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:25:49,005 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:25:49,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1218444496] [2022-12-13 22:25:49,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1218444496] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:25:49,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:25:49,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 22:25:49,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609884765] [2022-12-13 22:25:49,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:25:49,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:25:49,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:25:49,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:25:49,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:25:49,015 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 737 [2022-12-13 22:25:49,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 155 transitions, 951 flow. Second operand has 3 states, 3 states have (on average 302.3333333333333) internal successors, (907), 3 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:25:49,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:25:49,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 737 [2022-12-13 22:25:49,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:27:26,590 INFO L130 PetriNetUnfolder]: 644475/841027 cut-off events. [2022-12-13 22:27:26,590 INFO L131 PetriNetUnfolder]: For 3981/3981 co-relation queries the response was YES. [2022-12-13 22:27:29,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1693522 conditions, 841027 events. 644475/841027 cut-off events. For 3981/3981 co-relation queries the response was YES. Maximal size of possible extension queue 20192. Compared 5918540 event pairs, 201810 based on Foata normal form. 10/307493 useless extension candidates. Maximal degree in co-relation 1693496. Up to 817711 conditions per place. [2022-12-13 22:27:32,368 INFO L137 encePairwiseOnDemand]: 727/737 looper letters, 185 selfloop transitions, 4 changer transitions 1/190 dead transitions. [2022-12-13 22:27:32,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 190 transitions, 1407 flow [2022-12-13 22:27:32,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:27:32,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:27:32,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1022 transitions. [2022-12-13 22:27:32,371 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4622342831298055 [2022-12-13 22:27:32,371 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1022 transitions. [2022-12-13 22:27:32,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1022 transitions. [2022-12-13 22:27:32,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:27:32,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1022 transitions. [2022-12-13 22:27:32,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 340.6666666666667) internal successors, (1022), 3 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:27:32,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 737.0) internal successors, (2948), 4 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:27:32,377 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 737.0) internal successors, (2948), 4 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:27:32,377 INFO L175 Difference]: Start difference. First operand has 117 places, 155 transitions, 951 flow. Second operand 3 states and 1022 transitions. [2022-12-13 22:27:32,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 190 transitions, 1407 flow [2022-12-13 22:27:32,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 190 transitions, 1267 flow, removed 34 selfloop flow, removed 4 redundant places. [2022-12-13 22:27:32,389 INFO L231 Difference]: Finished difference. Result has 116 places, 158 transitions, 847 flow [2022-12-13 22:27:32,389 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=737, PETRI_DIFFERENCE_MINUEND_FLOW=811, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=847, PETRI_PLACES=116, PETRI_TRANSITIONS=158} [2022-12-13 22:27:32,390 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 21 predicate places. [2022-12-13 22:27:32,390 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 158 transitions, 847 flow [2022-12-13 22:27:32,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 302.3333333333333) internal successors, (907), 3 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:27:32,391 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:27:32,391 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:27:32,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-13 22:27:32,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:27:32,592 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-12-13 22:27:32,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:27:32,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1200157196, now seen corresponding path program 1 times [2022-12-13 22:27:32,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:27:32,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1660384554] [2022-12-13 22:27:32,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:27:32,596 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:27:32,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:27:32,599 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 22:27:32,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566cbe00-47ef-4f02-b7e0-c052f2689f6c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-13 22:27:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:32,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 22:27:32,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:27:32,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:27:32,857 INFO L321 Elim1Store]: treesize reduction 161, result has 20.3 percent of original size [2022-12-13 22:27:32,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 49 treesize of output 74 [2022-12-13 22:27:33,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:27:33,470 INFO L321 Elim1Store]: treesize reduction 34, result has 40.4 percent of original size [2022-12-13 22:27:33,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 52 [2022-12-13 22:27:33,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:27:34,112 INFO L321 Elim1Store]: treesize reduction 66, result has 49.2 percent of original size [2022-12-13 22:27:34,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 75 treesize of output 138 [2022-12-13 22:27:39,339 INFO L321 Elim1Store]: treesize reduction 52, result has 66.0 percent of original size [2022-12-13 22:27:39,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 85 treesize of output 178 [2022-12-13 22:29:19,648 WARN L233 SmtUtils]: Spent 55.65s on a formula simplification. DAG size of input: 631 DAG size of output: 53 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 22:29:19,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:29:19,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:29:19,843 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:29:19,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1660384554] [2022-12-13 22:29:19,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1660384554] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:29:19,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:29:19,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 22:29:19,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607609070] [2022-12-13 22:29:19,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:29:19,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 22:29:19,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:29:19,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 22:29:19,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=14, Unknown=1, NotChecked=0, Total=30 [2022-12-13 22:29:24,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 22:29:26,206 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 737 [2022-12-13 22:29:26,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 158 transitions, 847 flow. Second operand has 6 states, 6 states have (on average 257.1666666666667) internal successors, (1543), 6 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:29:26,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:29:26,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 737 [2022-12-13 22:29:26,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand