./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 422a1b4addf42b15afc18c6b3ff87ab94cf45a5af46627fa0165a3dbe9c138e8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 16:53:00,459 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:53:00,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:53:00,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:53:00,513 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:53:00,518 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:53:00,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:53:00,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:53:00,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:53:00,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:53:00,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:53:00,540 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:53:00,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:53:00,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:53:00,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:53:00,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:53:00,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:53:00,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:53:00,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:53:00,563 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:53:00,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:53:00,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:53:00,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:53:00,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:53:00,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:53:00,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:53:00,584 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:53:00,585 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:53:00,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:53:00,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:53:00,587 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:53:00,588 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:53:00,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:53:00,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:53:00,595 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:53:00,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:53:00,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:53:00,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:53:00,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:53:00,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:53:00,601 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:53:00,602 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 16:53:00,654 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:53:00,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:53:00,655 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:53:00,656 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:53:00,657 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:53:00,657 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:53:00,658 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:53:00,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:53:00,659 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:53:00,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:53:00,661 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 16:53:00,661 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 16:53:00,661 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 16:53:00,662 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 16:53:00,662 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:53:00,662 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 16:53:00,662 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 16:53:00,663 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 16:53:00,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:53:00,663 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 16:53:00,664 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 16:53:00,664 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:53:00,664 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:53:00,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:53:00,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:53:00,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:53:00,665 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:53:00,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:53:00,666 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 16:53:00,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 16:53:00,667 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:53:00,667 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:53:00,668 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:53:00,668 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_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 422a1b4addf42b15afc18c6b3ff87ab94cf45a5af46627fa0165a3dbe9c138e8 [2022-11-25 16:53:01,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:53:01,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:53:01,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:53:01,104 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:53:01,105 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:53:01,106 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c [2022-11-25 16:53:04,755 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:53:05,134 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:53:05,135 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c [2022-11-25 16:53:05,144 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/data/35ea46d3b/064e59c9e1694d2bbddc2fc29cadb01a/FLAG111969847 [2022-11-25 16:53:05,440 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/data/35ea46d3b/064e59c9e1694d2bbddc2fc29cadb01a [2022-11-25 16:53:05,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:53:05,446 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:53:05,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:53:05,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:53:05,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:53:05,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:53:05" (1/1) ... [2022-11-25 16:53:05,457 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@433719f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:53:05, skipping insertion in model container [2022-11-25 16:53:05,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:53:05" (1/1) ... [2022-11-25 16:53:05,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:53:05,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:53:05,784 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:05,789 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:05,789 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:05,795 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:05,796 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:05,797 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:05,797 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:05,798 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:05,804 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:05,806 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:05,807 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:05,815 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:05,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:05,817 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:05,817 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:05,818 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:05,820 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:05,821 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:05,822 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:05,824 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:05,827 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:05,828 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:05,831 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:05,839 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:05,839 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:05,842 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:05,844 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:05,845 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:05,857 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c[4218,4231] [2022-11-25 16:53:05,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:53:05,907 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-25 16:53:05,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@68fd70c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:53:05, skipping insertion in model container [2022-11-25 16:53:05,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:53:05,913 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-25 16:53:05,916 INFO L158 Benchmark]: Toolchain (without parser) took 468.80ms. Allocated memory is still 165.7MB. Free memory was 131.7MB in the beginning and 119.8MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 16:53:05,916 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 121.6MB. Free memory is still 64.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 16:53:05,918 INFO L158 Benchmark]: CACSL2BoogieTranslator took 464.80ms. Allocated memory is still 165.7MB. Free memory was 131.7MB in the beginning and 119.8MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 16:53:05,920 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 121.6MB. Free memory is still 64.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 464.80ms. Allocated memory is still 165.7MB. Free memory was 131.7MB in the beginning and 119.8MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 161]: 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_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 422a1b4addf42b15afc18c6b3ff87ab94cf45a5af46627fa0165a3dbe9c138e8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 16:53:08,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:53:08,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:53:08,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:53:08,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:53:08,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:53:08,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:53:08,744 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:53:08,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:53:08,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:53:08,749 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:53:08,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:53:08,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:53:08,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:53:08,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:53:08,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:53:08,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:53:08,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:53:08,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:53:08,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:53:08,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:53:08,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:53:08,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:53:08,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:53:08,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:53:08,784 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:53:08,785 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:53:08,786 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:53:08,786 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:53:08,799 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:53:08,799 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:53:08,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:53:08,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:53:08,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:53:08,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:53:08,816 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:53:08,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:53:08,817 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:53:08,817 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:53:08,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:53:08,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:53:08,822 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-25 16:53:08,878 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:53:08,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:53:08,881 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:53:08,881 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:53:08,882 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:53:08,882 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:53:08,883 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:53:08,883 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:53:08,884 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:53:08,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:53:08,885 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 16:53:08,886 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 16:53:08,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 16:53:08,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 16:53:08,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:53:08,886 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 16:53:08,887 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 16:53:08,887 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 16:53:08,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:53:08,887 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 16:53:08,888 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 16:53:08,888 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 16:53:08,888 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 16:53:08,888 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:53:08,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:53:08,889 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:53:08,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:53:08,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:53:08,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:53:08,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:53:08,890 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 16:53:08,890 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 16:53:08,891 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:53:08,891 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:53:08,891 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:53:08,891 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 16:53:08,892 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_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 422a1b4addf42b15afc18c6b3ff87ab94cf45a5af46627fa0165a3dbe9c138e8 [2022-11-25 16:53:09,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:53:09,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:53:09,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:53:09,381 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:53:09,382 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:53:09,384 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c [2022-11-25 16:53:12,975 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:53:13,285 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:53:13,288 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c [2022-11-25 16:53:13,301 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/data/1e99cca1f/f3406971d29f4718aa2a37f7b7fd726c/FLAG4440004b8 [2022-11-25 16:53:13,329 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/data/1e99cca1f/f3406971d29f4718aa2a37f7b7fd726c [2022-11-25 16:53:13,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:53:13,338 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:53:13,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:53:13,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:53:13,346 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:53:13,347 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:53:13" (1/1) ... [2022-11-25 16:53:13,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12478c03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:53:13, skipping insertion in model container [2022-11-25 16:53:13,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:53:13" (1/1) ... [2022-11-25 16:53:13,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:53:13,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:53:13,573 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,575 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,576 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,579 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,580 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,580 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,581 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,582 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,586 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,587 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,587 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,589 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,590 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,591 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,591 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,592 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,594 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,595 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,595 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,597 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,598 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,599 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,600 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,601 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,602 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,604 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,604 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,605 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,619 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_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c[4218,4231] [2022-11-25 16:53:13,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:53:13,668 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-25 16:53:13,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:53:13,693 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,698 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,699 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,722 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,723 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,723 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,724 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,725 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,726 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,727 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,728 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,729 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,730 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,730 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,731 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,732 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,733 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,734 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,734 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,736 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,737 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,742 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,743 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,744 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,745 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,747 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,747 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,748 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,784 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_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c[4218,4231] [2022-11-25 16:53:13,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:53:13,810 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:53:13,843 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,844 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,845 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,853 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,854 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,854 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,856 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,859 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,861 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,863 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,864 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,878 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,879 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,879 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,880 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,881 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,883 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,884 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,885 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,886 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,888 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,889 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,890 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,892 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,894 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,896 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,905 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:53:13,906 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:53:13,912 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_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c[4218,4231] [2022-11-25 16:53:13,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:53:13,950 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:53:13,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:53:13 WrapperNode [2022-11-25 16:53:13,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:53:13,954 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:53:13,954 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:53:13,954 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:53:13,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:53:13" (1/1) ... [2022-11-25 16:53:13,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:53:13" (1/1) ... [2022-11-25 16:53:14,062 INFO L138 Inliner]: procedures = 29, calls = 80, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 297 [2022-11-25 16:53:14,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:53:14,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:53:14,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:53:14,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:53:14,079 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:53:13" (1/1) ... [2022-11-25 16:53:14,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:53:13" (1/1) ... [2022-11-25 16:53:14,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:53:13" (1/1) ... [2022-11-25 16:53:14,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:53:13" (1/1) ... [2022-11-25 16:53:14,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:53:13" (1/1) ... [2022-11-25 16:53:14,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:53:13" (1/1) ... [2022-11-25 16:53:14,146 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:53:13" (1/1) ... [2022-11-25 16:53:14,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:53:13" (1/1) ... [2022-11-25 16:53:14,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:53:14,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:53:14,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:53:14,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:53:14,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:53:13" (1/1) ... [2022-11-25 16:53:14,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:53:14,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:53:14,221 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 16:53:14,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 16:53:14,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 16:53:14,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 16:53:14,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 16:53:14,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-25 16:53:14,293 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 16:53:14,293 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 16:53:14,294 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 16:53:14,294 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 16:53:14,295 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 16:53:14,295 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 16:53:14,295 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-25 16:53:14,296 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-25 16:53:14,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 16:53:14,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 16:53:14,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 16:53:14,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:53:14,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:53:14,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 16:53:14,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-25 16:53:14,300 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 16:53:14,559 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:53:14,562 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:53:15,572 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:53:15,940 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:53:15,940 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-25 16:53:15,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:53:15 BoogieIcfgContainer [2022-11-25 16:53:15,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:53:15,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 16:53:15,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 16:53:15,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 16:53:15,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:53:13" (1/3) ... [2022-11-25 16:53:15,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d905479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:53:15, skipping insertion in model container [2022-11-25 16:53:15,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:53:13" (2/3) ... [2022-11-25 16:53:15,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d905479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:53:15, skipping insertion in model container [2022-11-25 16:53:15,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:53:15" (3/3) ... [2022-11-25 16:53:15,955 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult.wvr.c [2022-11-25 16:53:15,980 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 16:53:15,980 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2022-11-25 16:53:15,980 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 16:53:16,129 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-25 16:53:16,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 255 transitions, 542 flow [2022-11-25 16:53:16,322 INFO L130 PetriNetUnfolder]: 18/251 cut-off events. [2022-11-25 16:53:16,322 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-25 16:53:16,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 251 events. 18/251 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 218 event pairs, 0 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 199. Up to 2 conditions per place. [2022-11-25 16:53:16,332 INFO L82 GeneralOperation]: Start removeDead. Operand has 250 places, 255 transitions, 542 flow [2022-11-25 16:53:16,340 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 241 places, 246 transitions, 516 flow [2022-11-25 16:53:16,345 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 16:53:16,363 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 241 places, 246 transitions, 516 flow [2022-11-25 16:53:16,367 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 241 places, 246 transitions, 516 flow [2022-11-25 16:53:16,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 246 transitions, 516 flow [2022-11-25 16:53:16,508 INFO L130 PetriNetUnfolder]: 18/246 cut-off events. [2022-11-25 16:53:16,509 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-25 16:53:16,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 246 events. 18/246 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 215 event pairs, 0 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 199. Up to 2 conditions per place. [2022-11-25 16:53:16,514 INFO L119 LiptonReduction]: Number of co-enabled transitions 3392 [2022-11-25 16:53:58,708 WARN L233 SmtUtils]: Spent 5.62s on a formula simplification. DAG size of input: 134 DAG size of output: 131 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:54:04,117 INFO L134 LiptonReduction]: Checked pairs total: 6459 [2022-11-25 16:54:04,118 INFO L136 LiptonReduction]: Total number of compositions: 252 [2022-11-25 16:54:04,134 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:54:04,139 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;@29e8c0ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:54:04,140 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2022-11-25 16:54:04,143 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 16:54:04,144 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:54:04,144 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:54:04,145 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 16:54:04,145 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-25 16:54:04,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:54:04,151 INFO L85 PathProgramCache]: Analyzing trace with hash 38575, now seen corresponding path program 1 times [2022-11-25 16:54:04,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 16:54:04,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [154179634] [2022-11-25 16:54:04,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:54:04,167 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 16:54:04,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 16:54:04,175 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 16:54:04,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-25 16:54:04,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:04,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 16:54:04,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:54:04,656 INFO L321 Elim1Store]: treesize reduction 150, result has 29.6 percent of original size [2022-11-25 16:54:04,657 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 [2022-11-25 16:54:04,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:54:04,713 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:54:04,714 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 16:54:04,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [154179634] [2022-11-25 16:54:04,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [154179634] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:54:04,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:54:04,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:54:04,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422844888] [2022-11-25 16:54:04,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:54:04,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:54:04,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 16:54:04,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:54:04,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:54:05,024 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 507 [2022-11-25 16:54:05,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 66 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:54:05,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:54:05,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 507 [2022-11-25 16:54:05,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:54:10,109 INFO L130 PetriNetUnfolder]: 21072/26499 cut-off events. [2022-11-25 16:54:10,109 INFO L131 PetriNetUnfolder]: For 223/223 co-relation queries the response was YES. [2022-11-25 16:54:10,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53205 conditions, 26499 events. 21072/26499 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 1940. Compared 137334 event pairs, 14510 based on Foata normal form. 0/8658 useless extension candidates. Maximal degree in co-relation 47480. Up to 26073 conditions per place. [2022-11-25 16:54:10,427 INFO L137 encePairwiseOnDemand]: 503/507 looper letters, 56 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2022-11-25 16:54:10,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 63 transitions, 264 flow [2022-11-25 16:54:10,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:54:10,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:54:10,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 684 transitions. [2022-11-25 16:54:10,459 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44970414201183434 [2022-11-25 16:54:10,460 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 684 transitions. [2022-11-25 16:54:10,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 684 transitions. [2022-11-25 16:54:10,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:54:10,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 684 transitions. [2022-11-25 16:54:10,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:54:10,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 507.0) internal successors, (2028), 4 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:54:10,491 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 507.0) internal successors, (2028), 4 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:54:10,493 INFO L175 Difference]: Start difference. First operand has 73 places, 66 transitions, 156 flow. Second operand 3 states and 684 transitions. [2022-11-25 16:54:10,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 63 transitions, 264 flow [2022-11-25 16:54:10,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 63 transitions, 248 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-25 16:54:10,590 INFO L231 Difference]: Finished difference. Result has 64 places, 63 transitions, 136 flow [2022-11-25 16:54:10,593 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=64, PETRI_TRANSITIONS=63} [2022-11-25 16:54:10,602 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, -9 predicate places. [2022-11-25 16:54:10,602 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 63 transitions, 136 flow [2022-11-25 16:54:10,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:54:10,602 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:54:10,603 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 16:54:10,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-25 16:54:10,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 16:54:10,817 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-25 16:54:10,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:54:10,818 INFO L85 PathProgramCache]: Analyzing trace with hash 38576, now seen corresponding path program 1 times [2022-11-25 16:54:10,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 16:54:10,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [689889495] [2022-11-25 16:54:10,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:54:10,820 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 16:54:10,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 16:54:10,831 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 16:54:10,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-25 16:54:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:10,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 16:54:10,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:54:11,203 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-25 16:54:11,204 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 [2022-11-25 16:54:11,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:54:11,262 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:54:11,262 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 16:54:11,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [689889495] [2022-11-25 16:54:11,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [689889495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:54:11,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:54:11,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:54:11,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591561002] [2022-11-25 16:54:11,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:54:11,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:54:11,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 16:54:11,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:54:11,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:54:11,622 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 507 [2022-11-25 16:54:11,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 63 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:54:11,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:54:11,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 507 [2022-11-25 16:54:11,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:54:18,627 INFO L130 PetriNetUnfolder]: 42143/52995 cut-off events. [2022-11-25 16:54:18,627 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:54:18,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105588 conditions, 52995 events. 42143/52995 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3700. Compared 296391 event pairs, 29020 based on Foata normal form. 0/17423 useless extension candidates. Maximal degree in co-relation 105582. Up to 26074 conditions per place. [2022-11-25 16:54:19,020 INFO L137 encePairwiseOnDemand]: 501/507 looper letters, 107 selfloop transitions, 4 changer transitions 0/117 dead transitions. [2022-11-25 16:54:19,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 117 transitions, 474 flow [2022-11-25 16:54:19,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:54:19,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:54:19,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 737 transitions. [2022-11-25 16:54:19,031 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48454963839579224 [2022-11-25 16:54:19,032 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 737 transitions. [2022-11-25 16:54:19,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 737 transitions. [2022-11-25 16:54:19,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:54:19,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 737 transitions. [2022-11-25 16:54:19,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 245.66666666666666) internal successors, (737), 3 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:54:19,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 507.0) internal successors, (2028), 4 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:54:19,040 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 507.0) internal successors, (2028), 4 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:54:19,041 INFO L175 Difference]: Start difference. First operand has 64 places, 63 transitions, 136 flow. Second operand 3 states and 737 transitions. [2022-11-25 16:54:19,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 117 transitions, 474 flow [2022-11-25 16:54:19,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 117 transitions, 473 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 16:54:19,045 INFO L231 Difference]: Finished difference. Result has 67 places, 66 transitions, 167 flow [2022-11-25 16:54:19,046 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=67, PETRI_TRANSITIONS=66} [2022-11-25 16:54:19,047 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, -6 predicate places. [2022-11-25 16:54:19,048 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 66 transitions, 167 flow [2022-11-25 16:54:19,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:54:19,049 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:54:19,049 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 16:54:19,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-25 16:54:19,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 16:54:19,274 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-25 16:54:19,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:54:19,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1199650, now seen corresponding path program 1 times [2022-11-25 16:54:19,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 16:54:19,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [39200480] [2022-11-25 16:54:19,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:54:19,277 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 16:54:19,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 16:54:19,278 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 16:54:19,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-25 16:54:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:19,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 16:54:19,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:54:19,657 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-25 16:54:19,658 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 [2022-11-25 16:54:19,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:54:19,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:54:20,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:54:20,103 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 16:54:20,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [39200480] [2022-11-25 16:54:20,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [39200480] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:54:20,104 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 16:54:20,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-25 16:54:20,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855189130] [2022-11-25 16:54:20,105 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 16:54:20,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 16:54:20,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 16:54:20,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 16:54:20,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 16:54:21,461 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 507 [2022-11-25 16:54:21,463 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 167 flow. Second operand has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:54:21,463 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:54:21,463 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 507 [2022-11-25 16:54:21,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:54:32,997 INFO L130 PetriNetUnfolder]: 63222/79503 cut-off events. [2022-11-25 16:54:32,997 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:54:33,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158427 conditions, 79503 events. 63222/79503 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5431. Compared 461911 event pairs, 43530 based on Foata normal form. 0/26202 useless extension candidates. Maximal degree in co-relation 158418. Up to 26075 conditions per place. [2022-11-25 16:54:33,455 INFO L137 encePairwiseOnDemand]: 498/507 looper letters, 158 selfloop transitions, 19 changer transitions 0/183 dead transitions. [2022-11-25 16:54:33,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 183 transitions, 795 flow [2022-11-25 16:54:33,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 16:54:33,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 16:54:33,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1371 transitions. [2022-11-25 16:54:33,462 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45069033530571995 [2022-11-25 16:54:33,462 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1371 transitions. [2022-11-25 16:54:33,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1371 transitions. [2022-11-25 16:54:33,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:54:33,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1371 transitions. [2022-11-25 16:54:33,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 228.5) internal successors, (1371), 6 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:54:33,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 507.0) internal successors, (3549), 7 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:54:33,478 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 507.0) internal successors, (3549), 7 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:54:33,478 INFO L175 Difference]: Start difference. First operand has 67 places, 66 transitions, 167 flow. Second operand 6 states and 1371 transitions. [2022-11-25 16:54:33,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 183 transitions, 795 flow [2022-11-25 16:54:33,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 183 transitions, 781 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 16:54:33,483 INFO L231 Difference]: Finished difference. Result has 74 places, 81 transitions, 304 flow [2022-11-25 16:54:33,483 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=304, PETRI_PLACES=74, PETRI_TRANSITIONS=81} [2022-11-25 16:54:33,484 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 1 predicate places. [2022-11-25 16:54:33,484 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 81 transitions, 304 flow [2022-11-25 16:54:33,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:54:33,485 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:54:33,485 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 16:54:33,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-11-25 16:54:33,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 16:54:33,698 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-25 16:54:33,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:54:33,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1201409, now seen corresponding path program 1 times [2022-11-25 16:54:33,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 16:54:33,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [428192692] [2022-11-25 16:54:33,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:54:33,700 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 16:54:33,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 16:54:33,701 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 16:54:33,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-25 16:54:33,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:33,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 16:54:33,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:54:33,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:54:33,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:54:33,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:54:33,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:54:33,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:54:33,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:54:34,177 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-11-25 16:54:34,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 41 [2022-11-25 16:54:34,282 INFO L321 Elim1Store]: treesize reduction 26, result has 16.1 percent of original size [2022-11-25 16:54:34,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 317 treesize of output 310 [2022-11-25 16:54:34,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:54:34,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-25 16:54:34,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:54:34,515 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:54:34,515 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 16:54:34,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [428192692] [2022-11-25 16:54:34,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [428192692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:54:34,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:54:34,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:54:34,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877418741] [2022-11-25 16:54:34,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:54:34,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:54:34,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 16:54:34,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:54:34,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:54:34,966 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 507 [2022-11-25 16:54:34,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 81 transitions, 304 flow. Second operand has 4 states, 4 states have (on average 213.75) internal successors, (855), 4 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:54:34,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:54:34,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 507 [2022-11-25 16:54:34,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:54:43,723 INFO L130 PetriNetUnfolder]: 50800/64378 cut-off events. [2022-11-25 16:54:43,723 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 16:54:43,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128225 conditions, 64378 events. 50800/64378 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4120. Compared 373563 event pairs, 34710 based on Foata normal form. 0/22207 useless extension candidates. Maximal degree in co-relation 128212. Up to 63100 conditions per place. [2022-11-25 16:54:44,186 INFO L137 encePairwiseOnDemand]: 504/507 looper letters, 70 selfloop transitions, 1 changer transitions 0/77 dead transitions. [2022-11-25 16:54:44,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 77 transitions, 426 flow [2022-11-25 16:54:44,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:54:44,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:54:44,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 696 transitions. [2022-11-25 16:54:44,190 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45759368836291914 [2022-11-25 16:54:44,190 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 696 transitions. [2022-11-25 16:54:44,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 696 transitions. [2022-11-25 16:54:44,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:54:44,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 696 transitions. [2022-11-25 16:54:44,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:54:44,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 507.0) internal successors, (2028), 4 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:54:44,200 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 507.0) internal successors, (2028), 4 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:54:44,200 INFO L175 Difference]: Start difference. First operand has 74 places, 81 transitions, 304 flow. Second operand 3 states and 696 transitions. [2022-11-25 16:54:44,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 77 transitions, 426 flow [2022-11-25 16:54:44,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 77 transitions, 407 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-25 16:54:44,208 INFO L231 Difference]: Finished difference. Result has 73 places, 77 transitions, 267 flow [2022-11-25 16:54:44,209 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=267, PETRI_PLACES=73, PETRI_TRANSITIONS=77} [2022-11-25 16:54:44,211 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 0 predicate places. [2022-11-25 16:54:44,211 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 77 transitions, 267 flow [2022-11-25 16:54:44,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 213.75) internal successors, (855), 4 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:54:44,212 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:54:44,213 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 16:54:44,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-11-25 16:54:44,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 16:54:44,426 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-25 16:54:44,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:54:44,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1201410, now seen corresponding path program 1 times [2022-11-25 16:54:44,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 16:54:44,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [862879224] [2022-11-25 16:54:44,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:54:44,428 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 16:54:44,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 16:54:44,429 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 16:54:44,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f036a-2df1-4393-bfd0-4a5d4e9e0228/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-25 16:54:44,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:54:44,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-25 16:54:44,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:54:44,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:54:44,811 INFO L321 Elim1Store]: treesize reduction 178, result has 18.7 percent of original size [2022-11-25 16:54:44,812 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 81 [2022-11-25 16:54:46,532 INFO L321 Elim1Store]: treesize reduction 48, result has 31.4 percent of original size [2022-11-25 16:54:46,533 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 44 [2022-11-25 16:54:46,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:54:46,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:54:46,814 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 16:54:46,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [862879224] [2022-11-25 16:54:46,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [862879224] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:54:46,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:54:46,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:54:46,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766293531] [2022-11-25 16:54:46,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:54:46,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:54:46,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 16:54:46,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:54:46,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:54:47,566 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 507 [2022-11-25 16:54:47,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 77 transitions, 267 flow. Second operand has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:54:47,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:54:47,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 507 [2022-11-25 16:54:47,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand