./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-min.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_2b653dab-4f41-46c8-ac52-953c6c5b2e99/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/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_2b653dab-4f41-46c8-ac52-953c6c5b2e99/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/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_2b653dab-4f41-46c8-ac52-953c6c5b2e99/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 3e185f9c0dac86cdbb29caae2de39811a090d813c08c4c3552062c2aa77b8788 --- 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 17:06:44,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:06:44,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:06:44,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:06:44,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:06:44,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:06:44,418 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:06:44,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:06:44,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:06:44,428 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:06:44,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:06:44,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:06:44,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:06:44,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:06:44,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:06:44,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:06:44,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:06:44,440 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:06:44,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:06:44,443 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:06:44,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:06:44,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:06:44,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:06:44,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:06:44,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:06:44,461 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:06:44,462 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:06:44,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:06:44,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:06:44,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:06:44,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:06:44,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:06:44,470 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:06:44,471 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:06:44,472 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:06:44,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:06:44,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:06:44,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:06:44,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:06:44,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:06:44,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:06:44,477 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 17:06:44,523 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:06:44,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:06:44,524 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:06:44,525 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:06:44,526 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:06:44,526 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:06:44,527 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:06:44,527 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:06:44,527 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:06:44,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:06:44,529 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:06:44,529 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:06:44,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:06:44,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:06:44,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:06:44,530 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 17:06:44,530 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 17:06:44,530 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 17:06:44,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:06:44,531 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 17:06:44,531 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:06:44,531 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:06:44,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:06:44,532 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:06:44,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:06:44,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:06:44,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:06:44,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:06:44,533 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:06:44,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:06:44,534 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:06:44,534 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:06:44,534 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:06:44,535 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_2b653dab-4f41-46c8-ac52-953c6c5b2e99/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e185f9c0dac86cdbb29caae2de39811a090d813c08c4c3552062c2aa77b8788 [2022-11-25 17:06:44,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:06:44,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:06:44,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:06:44,808 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:06:44,808 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:06:44,810 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2022-11-25 17:06:48,005 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:06:48,254 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:06:48,254 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2022-11-25 17:06:48,265 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/bin/uautomizer-ZsLfNo2U6R/data/0d0c1ee3e/6b880fdde4984fffafbc83470a8e788a/FLAGf0946fee6 [2022-11-25 17:06:48,288 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/bin/uautomizer-ZsLfNo2U6R/data/0d0c1ee3e/6b880fdde4984fffafbc83470a8e788a [2022-11-25 17:06:48,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:06:48,297 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:06:48,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:06:48,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:06:48,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:06:48,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:06:48" (1/1) ... [2022-11-25 17:06:48,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b8173be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:48, skipping insertion in model container [2022-11-25 17:06:48,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:06:48" (1/1) ... [2022-11-25 17:06:48,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:06:48,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:06:48,498 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:06:48,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:06:48,502 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:06:48,503 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:06:48,504 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:06:48,506 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:06:48,516 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_2b653dab-4f41-46c8-ac52-953c6c5b2e99/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c[2815,2828] [2022-11-25 17:06:48,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:06:48,540 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 17:06:48,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1f81c146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:48, skipping insertion in model container [2022-11-25 17:06:48,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:06:48,541 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-25 17:06:48,543 INFO L158 Benchmark]: Toolchain (without parser) took 245.50ms. Allocated memory is still 146.8MB. Free memory was 116.2MB in the beginning and 105.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 17:06:48,544 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 121.6MB. Free memory is still 75.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:06:48,545 INFO L158 Benchmark]: CACSL2BoogieTranslator took 243.03ms. Allocated memory is still 146.8MB. Free memory was 116.2MB in the beginning and 105.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 17:06:48,546 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 121.6MB. Free memory is still 75.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 243.03ms. Allocated memory is still 146.8MB. Free memory was 116.2MB in the beginning and 105.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 123]: 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_2b653dab-4f41-46c8-ac52-953c6c5b2e99/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/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_2b653dab-4f41-46c8-ac52-953c6c5b2e99/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/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_2b653dab-4f41-46c8-ac52-953c6c5b2e99/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 3e185f9c0dac86cdbb29caae2de39811a090d813c08c4c3552062c2aa77b8788 --- 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 17:06:50,775 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:06:50,777 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:06:50,819 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:06:50,821 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:06:50,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:06:50,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:06:50,830 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:06:50,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:06:50,837 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:06:50,838 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:06:50,839 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:06:50,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:06:50,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:06:50,846 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:06:50,847 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:06:50,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:06:50,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:06:50,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:06:50,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:06:50,864 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:06:50,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:06:50,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:06:50,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:06:50,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:06:50,881 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:06:50,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:06:50,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:06:50,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:06:50,884 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:06:50,884 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:06:50,885 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:06:50,887 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:06:50,888 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:06:50,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:06:50,915 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:06:50,916 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:06:50,916 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:06:50,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:06:50,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:06:50,918 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:06:50,922 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-25 17:06:50,958 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:06:50,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:06:50,962 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:06:50,962 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:06:50,963 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:06:50,963 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:06:50,964 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:06:50,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:06:50,965 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:06:50,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:06:50,966 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:06:50,966 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:06:50,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:06:50,967 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:06:50,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:06:50,967 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 17:06:50,968 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 17:06:50,968 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 17:06:50,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:06:50,968 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 17:06:50,968 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 17:06:50,969 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 17:06:50,969 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:06:50,969 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:06:50,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:06:50,970 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:06:50,970 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:06:50,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:06:50,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:06:50,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:06:50,971 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 17:06:50,971 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 17:06:50,971 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:06:50,971 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:06:50,972 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:06:50,972 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 17:06:50,972 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_2b653dab-4f41-46c8-ac52-953c6c5b2e99/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e185f9c0dac86cdbb29caae2de39811a090d813c08c4c3552062c2aa77b8788 [2022-11-25 17:06:51,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:06:51,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:06:51,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:06:51,444 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:06:51,446 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:06:51,448 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2022-11-25 17:06:54,715 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:06:54,962 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:06:54,963 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2022-11-25 17:06:54,971 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/bin/uautomizer-ZsLfNo2U6R/data/595d214e8/87d9d6aa8ca644eeb2e4bb720922b863/FLAG477d9ec4d [2022-11-25 17:06:54,992 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/bin/uautomizer-ZsLfNo2U6R/data/595d214e8/87d9d6aa8ca644eeb2e4bb720922b863 [2022-11-25 17:06:54,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:06:54,997 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:06:54,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:06:54,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:06:55,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:06:55,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:06:54" (1/1) ... [2022-11-25 17:06:55,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d145d4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:55, skipping insertion in model container [2022-11-25 17:06:55,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:06:54" (1/1) ... [2022-11-25 17:06:55,012 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:06:55,032 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:06:55,249 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:06:55,251 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:06:55,253 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:06:55,255 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:06:55,257 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:06:55,259 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:06:55,269 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_2b653dab-4f41-46c8-ac52-953c6c5b2e99/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c[2815,2828] [2022-11-25 17:06:55,283 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:06:55,298 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-25 17:06:55,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:06:55,310 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:06:55,312 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:06:55,313 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:06:55,314 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:06:55,315 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:06:55,316 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:06:55,323 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_2b653dab-4f41-46c8-ac52-953c6c5b2e99/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c[2815,2828] [2022-11-25 17:06:55,329 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:06:55,345 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:06:55,362 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:06:55,364 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:06:55,365 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:06:55,365 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:06:55,366 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:06:55,367 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:06:55,373 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_2b653dab-4f41-46c8-ac52-953c6c5b2e99/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c[2815,2828] [2022-11-25 17:06:55,378 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:06:55,406 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:06:55,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:55 WrapperNode [2022-11-25 17:06:55,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:06:55,408 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:06:55,408 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:06:55,408 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:06:55,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:55" (1/1) ... [2022-11-25 17:06:55,430 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:55" (1/1) ... [2022-11-25 17:06:55,461 INFO L138 Inliner]: procedures = 28, calls = 57, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 225 [2022-11-25 17:06:55,461 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:06:55,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:06:55,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:06:55,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:06:55,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:55" (1/1) ... [2022-11-25 17:06:55,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:55" (1/1) ... [2022-11-25 17:06:55,478 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:55" (1/1) ... [2022-11-25 17:06:55,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:55" (1/1) ... [2022-11-25 17:06:55,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:55" (1/1) ... [2022-11-25 17:06:55,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:55" (1/1) ... [2022-11-25 17:06:55,500 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:55" (1/1) ... [2022-11-25 17:06:55,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:55" (1/1) ... [2022-11-25 17:06:55,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:06:55,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:06:55,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:06:55,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:06:55,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:55" (1/1) ... [2022-11-25 17:06:55,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:06:55,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:06:55,542 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:06:55,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:06:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:06:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 17:06:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:06:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-25 17:06:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 17:06:55,601 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 17:06:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 17:06:55,602 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 17:06:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 17:06:55,602 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 17:06:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 17:06:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 17:06:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 17:06:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:06:55,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:06:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:06:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-25 17:06:55,605 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:06:55,740 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:06:55,742 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:06:56,755 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:06:56,906 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:06:56,907 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-25 17:06:56,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:06:56 BoogieIcfgContainer [2022-11-25 17:06:56,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:06:56,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:06:56,914 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:06:56,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:06:56,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:06:54" (1/3) ... [2022-11-25 17:06:56,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c266026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:06:56, skipping insertion in model container [2022-11-25 17:06:56,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:55" (2/3) ... [2022-11-25 17:06:56,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c266026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:06:56, skipping insertion in model container [2022-11-25 17:06:56,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:06:56" (3/3) ... [2022-11-25 17:06:56,925 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-min.wvr.c [2022-11-25 17:06:56,946 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:06:56,946 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2022-11-25 17:06:56,947 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:06:57,099 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 17:06:57,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 340 places, 357 transitions, 738 flow [2022-11-25 17:06:57,364 INFO L130 PetriNetUnfolder]: 27/354 cut-off events. [2022-11-25 17:06:57,365 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 17:06:57,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 354 events. 27/354 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 412 event pairs, 0 based on Foata normal form. 0/281 useless extension candidates. Maximal degree in co-relation 274. Up to 3 conditions per place. [2022-11-25 17:06:57,375 INFO L82 GeneralOperation]: Start removeDead. Operand has 340 places, 357 transitions, 738 flow [2022-11-25 17:06:57,387 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 332 places, 349 transitions, 716 flow [2022-11-25 17:06:57,392 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:06:57,418 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 332 places, 349 transitions, 716 flow [2022-11-25 17:06:57,422 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 332 places, 349 transitions, 716 flow [2022-11-25 17:06:57,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 332 places, 349 transitions, 716 flow [2022-11-25 17:06:57,512 INFO L130 PetriNetUnfolder]: 27/349 cut-off events. [2022-11-25 17:06:57,512 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 17:06:57,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 349 events. 27/349 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 412 event pairs, 0 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 274. Up to 3 conditions per place. [2022-11-25 17:06:57,519 INFO L119 LiptonReduction]: Number of co-enabled transitions 5194 [2022-11-25 17:08:28,440 INFO L134 LiptonReduction]: Checked pairs total: 8790 [2022-11-25 17:08:28,440 INFO L136 LiptonReduction]: Total number of compositions: 410 [2022-11-25 17:08:28,458 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:08:28,464 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;@77314b4a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:08:28,465 INFO L358 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2022-11-25 17:08:28,468 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 17:08:28,468 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:08:28,468 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:08:28,469 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 17:08:28,470 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2022-11-25 17:08:28,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:08:28,475 INFO L85 PathProgramCache]: Analyzing trace with hash 45660, now seen corresponding path program 1 times [2022-11-25 17:08:28,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:08:28,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [568503087] [2022-11-25 17:08:28,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:08:28,509 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 17:08:28,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:08:28,515 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/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 17:08:28,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/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 17:08:28,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:08:28,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:08:28,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:08:28,915 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-25 17:08:28,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-25 17:08:28,959 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 17:08:28,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:08:28,960 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:08:28,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [568503087] [2022-11-25 17:08:28,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [568503087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:08:28,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:08:28,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:08:28,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920898465] [2022-11-25 17:08:28,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:08:28,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:08:28,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:08:29,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:08:29,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:08:29,332 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 767 [2022-11-25 17:08:29,336 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 80 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 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 17:08:29,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:08:29,336 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 767 [2022-11-25 17:08:29,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:08:32,110 INFO L130 PetriNetUnfolder]: 9899/12204 cut-off events. [2022-11-25 17:08:32,110 INFO L131 PetriNetUnfolder]: For 89/89 co-relation queries the response was YES. [2022-11-25 17:08:32,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24555 conditions, 12204 events. 9899/12204 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 1105. Compared 53931 event pairs, 4614 based on Foata normal form. 0/3119 useless extension candidates. Maximal degree in co-relation 22321. Up to 12123 conditions per place. [2022-11-25 17:08:32,223 INFO L137 encePairwiseOnDemand]: 752/767 looper letters, 60 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2022-11-25 17:08:32,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 66 transitions, 272 flow [2022-11-25 17:08:32,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:08:32,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:08:32,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1002 transitions. [2022-11-25 17:08:32,261 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43546284224250326 [2022-11-25 17:08:32,261 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1002 transitions. [2022-11-25 17:08:32,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1002 transitions. [2022-11-25 17:08:32,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:08:32,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1002 transitions. [2022-11-25 17:08:32,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 334.0) internal successors, (1002), 3 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:08:32,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 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 17:08:32,284 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 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 17:08:32,286 INFO L175 Difference]: Start difference. First operand has 81 places, 80 transitions, 178 flow. Second operand 3 states and 1002 transitions. [2022-11-25 17:08:32,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 66 transitions, 272 flow [2022-11-25 17:08:32,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 66 transitions, 260 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-25 17:08:32,318 INFO L231 Difference]: Finished difference. Result has 63 places, 66 transitions, 140 flow [2022-11-25 17:08:32,320 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=63, PETRI_TRANSITIONS=66} [2022-11-25 17:08:32,324 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, -18 predicate places. [2022-11-25 17:08:32,324 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 66 transitions, 140 flow [2022-11-25 17:08:32,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 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 17:08:32,325 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:08:32,325 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 17:08:32,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:08:32,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/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 17:08:32,526 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2022-11-25 17:08:32,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:08:32,527 INFO L85 PathProgramCache]: Analyzing trace with hash 45661, now seen corresponding path program 1 times [2022-11-25 17:08:32,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:08:32,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1501184573] [2022-11-25 17:08:32,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:08:32,528 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 17:08:32,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:08:32,533 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/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 17:08:32,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/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 17:08:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:08:32,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 17:08:32,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:08:32,847 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-25 17:08:32,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-25 17:08:32,969 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 17:08:32,969 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:08:32,969 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:08:32,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1501184573] [2022-11-25 17:08:32,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1501184573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:08:32,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:08:32,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:08:32,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296795488] [2022-11-25 17:08:32,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:08:32,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:08:32,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:08:32,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:08:32,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:08:33,577 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 767 [2022-11-25 17:08:33,579 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 66 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 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 17:08:33,579 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:08:33,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 767 [2022-11-25 17:08:33,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:08:36,269 INFO L130 PetriNetUnfolder]: 9900/12206 cut-off events. [2022-11-25 17:08:36,269 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-11-25 17:08:36,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24416 conditions, 12206 events. 9900/12206 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 1105. Compared 54019 event pairs, 4614 based on Foata normal form. 0/3120 useless extension candidates. Maximal degree in co-relation 24410. Up to 12125 conditions per place. [2022-11-25 17:08:36,351 INFO L137 encePairwiseOnDemand]: 763/767 looper letters, 60 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2022-11-25 17:08:36,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 68 transitions, 270 flow [2022-11-25 17:08:36,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:08:36,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:08:36,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 991 transitions. [2022-11-25 17:08:36,357 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43068231203824425 [2022-11-25 17:08:36,357 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 991 transitions. [2022-11-25 17:08:36,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 991 transitions. [2022-11-25 17:08:36,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:08:36,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 991 transitions. [2022-11-25 17:08:36,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 330.3333333333333) internal successors, (991), 3 states have internal predecessors, (991), 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 17:08:36,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 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 17:08:36,369 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 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 17:08:36,369 INFO L175 Difference]: Start difference. First operand has 63 places, 66 transitions, 140 flow. Second operand 3 states and 991 transitions. [2022-11-25 17:08:36,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 68 transitions, 270 flow [2022-11-25 17:08:36,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 68 transitions, 269 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:08:36,372 INFO L231 Difference]: Finished difference. Result has 65 places, 68 transitions, 158 flow [2022-11-25 17:08:36,372 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=65, PETRI_TRANSITIONS=68} [2022-11-25 17:08:36,373 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, -16 predicate places. [2022-11-25 17:08:36,374 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 68 transitions, 158 flow [2022-11-25 17:08:36,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 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 17:08:36,375 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:08:36,375 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:08:36,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/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 17:08:36,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/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 17:08:36,587 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2022-11-25 17:08:36,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:08:36,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1426397, now seen corresponding path program 1 times [2022-11-25 17:08:36,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:08:36,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1822871585] [2022-11-25 17:08:36,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:08:36,589 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 17:08:36,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:08:36,590 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/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 17:08:36,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/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 17:08:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:08:36,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 17:08:36,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:08:36,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-25 17:08:36,770 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 17:08:36,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:08:36,771 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:08:36,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1822871585] [2022-11-25 17:08:36,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1822871585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:08:36,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:08:36,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:08:36,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301567505] [2022-11-25 17:08:36,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:08:36,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:08:36,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:08:36,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:08:36,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:08:39,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:08:39,519 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 767 [2022-11-25 17:08:39,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 68 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 307.75) internal successors, (1231), 4 states have internal predecessors, (1231), 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 17:08:39,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:08:39,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 767 [2022-11-25 17:08:39,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:08:43,664 INFO L130 PetriNetUnfolder]: 19797/24404 cut-off events. [2022-11-25 17:08:43,664 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-25 17:08:43,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48821 conditions, 24404 events. 19797/24404 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 2103. Compared 116508 event pairs, 9228 based on Foata normal form. 0/6455 useless extension candidates. Maximal degree in co-relation 48813. Up to 12123 conditions per place. [2022-11-25 17:08:43,808 INFO L137 encePairwiseOnDemand]: 759/767 looper letters, 112 selfloop transitions, 6 changer transitions 0/123 dead transitions. [2022-11-25 17:08:43,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 123 transitions, 510 flow [2022-11-25 17:08:43,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:08:43,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:08:43,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1348 transitions. [2022-11-25 17:08:43,814 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.439374185136897 [2022-11-25 17:08:43,814 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1348 transitions. [2022-11-25 17:08:43,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1348 transitions. [2022-11-25 17:08:43,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:08:43,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1348 transitions. [2022-11-25 17:08:43,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 337.0) internal successors, (1348), 4 states have internal predecessors, (1348), 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 17:08:43,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 767.0) internal successors, (3835), 5 states have internal predecessors, (3835), 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 17:08:43,827 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 767.0) internal successors, (3835), 5 states have internal predecessors, (3835), 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 17:08:43,828 INFO L175 Difference]: Start difference. First operand has 65 places, 68 transitions, 158 flow. Second operand 4 states and 1348 transitions. [2022-11-25 17:08:43,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 123 transitions, 510 flow [2022-11-25 17:08:43,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 123 transitions, 505 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 17:08:43,831 INFO L231 Difference]: Finished difference. Result has 69 places, 71 transitions, 192 flow [2022-11-25 17:08:43,832 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=69, PETRI_TRANSITIONS=71} [2022-11-25 17:08:43,832 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, -12 predicate places. [2022-11-25 17:08:43,833 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 71 transitions, 192 flow [2022-11-25 17:08:43,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 307.75) internal successors, (1231), 4 states have internal predecessors, (1231), 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 17:08:43,834 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:08:43,834 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:08:43,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:08:44,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/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 17:08:44,057 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2022-11-25 17:08:44,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:08:44,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1423890, now seen corresponding path program 1 times [2022-11-25 17:08:44,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:08:44,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [192612662] [2022-11-25 17:08:44,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:08:44,058 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 17:08:44,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:08:44,060 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/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 17:08:44,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/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 17:08:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:08:44,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 17:08:44,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:08:44,310 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-25 17:08:44,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-25 17:08:44,394 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 17:08:44,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:08:44,669 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 17:08:44,669 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:08:44,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [192612662] [2022-11-25 17:08:44,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [192612662] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:08:44,670 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:08:44,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-25 17:08:44,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937106887] [2022-11-25 17:08:44,670 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:08:44,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:08:44,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:08:44,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:08:44,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:08:46,618 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 767 [2022-11-25 17:08:46,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 71 transitions, 192 flow. Second operand has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 17:08:46,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:08:46,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 767 [2022-11-25 17:08:46,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:08:49,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 17:08:50,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 17:08:55,433 INFO L130 PetriNetUnfolder]: 29713/36628 cut-off events. [2022-11-25 17:08:55,433 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-11-25 17:08:55,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73308 conditions, 36628 events. 29713/36628 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 3073. Compared 183293 event pairs, 13842 based on Foata normal form. 0/9812 useless extension candidates. Maximal degree in co-relation 73297. Up to 12131 conditions per place. [2022-11-25 17:08:55,653 INFO L137 encePairwiseOnDemand]: 751/767 looper letters, 164 selfloop transitions, 35 changer transitions 0/204 dead transitions. [2022-11-25 17:08:55,653 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 204 transitions, 916 flow [2022-11-25 17:08:55,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:08:55,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:08:55,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1972 transitions. [2022-11-25 17:08:55,662 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4285093437635811 [2022-11-25 17:08:55,662 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1972 transitions. [2022-11-25 17:08:55,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1972 transitions. [2022-11-25 17:08:55,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:08:55,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1972 transitions. [2022-11-25 17:08:55,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 328.6666666666667) internal successors, (1972), 6 states have internal predecessors, (1972), 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 17:08:55,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 767.0) internal successors, (5369), 7 states have internal predecessors, (5369), 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 17:08:55,681 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 767.0) internal successors, (5369), 7 states have internal predecessors, (5369), 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 17:08:55,681 INFO L175 Difference]: Start difference. First operand has 69 places, 71 transitions, 192 flow. Second operand 6 states and 1972 transitions. [2022-11-25 17:08:55,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 204 transitions, 916 flow [2022-11-25 17:08:55,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 204 transitions, 915 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:08:55,688 INFO L231 Difference]: Finished difference. Result has 77 places, 100 transitions, 477 flow [2022-11-25 17:08:55,689 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=477, PETRI_PLACES=77, PETRI_TRANSITIONS=100} [2022-11-25 17:08:55,691 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, -4 predicate places. [2022-11-25 17:08:55,691 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 100 transitions, 477 flow [2022-11-25 17:08:55,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 17:08:55,693 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:08:55,693 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 17:08:55,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:08:55,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/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 17:08:55,922 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2022-11-25 17:08:55,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:08:55,924 INFO L85 PathProgramCache]: Analyzing trace with hash 44229575, now seen corresponding path program 1 times [2022-11-25 17:08:55,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:08:55,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2022625885] [2022-11-25 17:08:55,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:08:55,926 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 17:08:55,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:08:55,927 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/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 17:08:55,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/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 17:08:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:08:56,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 17:08:56,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:08:56,124 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 17:08:56,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:08:56,126 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:08:56,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2022625885] [2022-11-25 17:08:56,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2022625885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:08:56,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:08:56,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:08:56,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930731913] [2022-11-25 17:08:56,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:08:56,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:08:56,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:08:56,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:08:56,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:08:56,292 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 767 [2022-11-25 17:08:56,293 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 100 transitions, 477 flow. Second operand has 3 states, 3 states have (on average 313.3333333333333) internal successors, (940), 3 states have internal predecessors, (940), 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 17:08:56,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:08:56,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 767 [2022-11-25 17:08:56,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:09:01,167 INFO L130 PetriNetUnfolder]: 29712/36627 cut-off events. [2022-11-25 17:09:01,168 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2022-11-25 17:09:01,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73429 conditions, 36627 events. 29712/36627 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 3058. Compared 183368 event pairs, 13842 based on Foata normal form. 1/9379 useless extension candidates. Maximal degree in co-relation 73413. Up to 36384 conditions per place. [2022-11-25 17:09:01,404 INFO L137 encePairwiseOnDemand]: 764/767 looper letters, 92 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2022-11-25 17:09:01,404 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 99 transitions, 661 flow [2022-11-25 17:09:01,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:09:01,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:09:01,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 999 transitions. [2022-11-25 17:09:01,410 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43415906127770537 [2022-11-25 17:09:01,410 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 999 transitions. [2022-11-25 17:09:01,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 999 transitions. [2022-11-25 17:09:01,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:09:01,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 999 transitions. [2022-11-25 17:09:01,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 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 17:09:01,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 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 17:09:01,421 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 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 17:09:01,421 INFO L175 Difference]: Start difference. First operand has 77 places, 100 transitions, 477 flow. Second operand 3 states and 999 transitions. [2022-11-25 17:09:01,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 99 transitions, 661 flow [2022-11-25 17:09:01,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 99 transitions, 625 flow, removed 12 selfloop flow, removed 1 redundant places. [2022-11-25 17:09:01,426 INFO L231 Difference]: Finished difference. Result has 78 places, 99 transitions, 441 flow [2022-11-25 17:09:01,426 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=441, PETRI_PLACES=78, PETRI_TRANSITIONS=99} [2022-11-25 17:09:01,427 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, -3 predicate places. [2022-11-25 17:09:01,427 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 99 transitions, 441 flow [2022-11-25 17:09:01,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 313.3333333333333) internal successors, (940), 3 states have internal predecessors, (940), 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 17:09:01,428 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:09:01,428 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:09:01,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/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)] Forceful destruction successful, exit code 0 [2022-11-25 17:09:01,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/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 17:09:01,642 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2022-11-25 17:09:01,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:09:01,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1368707644, now seen corresponding path program 1 times [2022-11-25 17:09:01,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:09:01,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741288457] [2022-11-25 17:09:01,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:01,643 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 17:09:01,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:09:01,645 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/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 17:09:01,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-25 17:09:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:01,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 17:09:01,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:09:01,876 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 17:09:01,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:09:02,008 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 17:09:02,009 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:09:02,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741288457] [2022-11-25 17:09:02,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1741288457] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:09:02,009 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:09:02,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-25 17:09:02,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161618706] [2022-11-25 17:09:02,010 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:09:02,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:09:02,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:09:02,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:09:02,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:09:02,663 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 767 [2022-11-25 17:09:02,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 99 transitions, 441 flow. Second operand has 8 states, 8 states have (on average 305.125) internal successors, (2441), 8 states have internal predecessors, (2441), 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 17:09:02,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:09:02,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 767 [2022-11-25 17:09:02,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:09:11,213 INFO L130 PetriNetUnfolder]: 39601/48819 cut-off events. [2022-11-25 17:09:11,214 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2022-11-25 17:09:11,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97807 conditions, 48819 events. 39601/48819 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 3601. Compared 249579 event pairs, 18456 based on Foata normal form. 4/13155 useless extension candidates. Maximal degree in co-relation 97790. Up to 12124 conditions per place. [2022-11-25 17:09:11,545 INFO L137 encePairwiseOnDemand]: 751/767 looper letters, 205 selfloop transitions, 42 changer transitions 0/252 dead transitions. [2022-11-25 17:09:11,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 252 transitions, 1339 flow [2022-11-25 17:09:11,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:09:11,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 17:09:11,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3303 transitions. [2022-11-25 17:09:11,559 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.430638852672751 [2022-11-25 17:09:11,560 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3303 transitions. [2022-11-25 17:09:11,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3303 transitions. [2022-11-25 17:09:11,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:09:11,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3303 transitions. [2022-11-25 17:09:11,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 330.3) internal successors, (3303), 10 states have internal predecessors, (3303), 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 17:09:11,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 767.0) internal successors, (8437), 11 states have internal predecessors, (8437), 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 17:09:11,589 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 767.0) internal successors, (8437), 11 states have internal predecessors, (8437), 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 17:09:11,589 INFO L175 Difference]: Start difference. First operand has 78 places, 99 transitions, 441 flow. Second operand 10 states and 3303 transitions. [2022-11-25 17:09:11,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 252 transitions, 1339 flow [2022-11-25 17:09:11,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 252 transitions, 1335 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:09:11,596 INFO L231 Difference]: Finished difference. Result has 87 places, 103 transitions, 597 flow [2022-11-25 17:09:11,596 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=597, PETRI_PLACES=87, PETRI_TRANSITIONS=103} [2022-11-25 17:09:11,597 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 6 predicate places. [2022-11-25 17:09:11,597 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 103 transitions, 597 flow [2022-11-25 17:09:11,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 305.125) internal successors, (2441), 8 states have internal predecessors, (2441), 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 17:09:11,599 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:09:11,599 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-11-25 17:09:11,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-25 17:09:11,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/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 17:09:11,820 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2022-11-25 17:09:11,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:09:11,821 INFO L85 PathProgramCache]: Analyzing trace with hash -522225763, now seen corresponding path program 2 times [2022-11-25 17:09:11,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:09:11,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [465386044] [2022-11-25 17:09:11,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:09:11,822 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 17:09:11,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:09:11,823 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/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 17:09:11,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-25 17:09:11,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:09:11,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:09:11,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 17:09:11,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:09:12,114 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-25 17:09:12,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-25 17:09:12,320 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:09:12,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:09:13,051 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:09:13,052 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:09:13,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [465386044] [2022-11-25 17:09:13,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [465386044] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:09:13,052 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:09:13,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-25 17:09:13,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313767495] [2022-11-25 17:09:13,053 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:09:13,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 17:09:13,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:09:13,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 17:09:13,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:09:25,965 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 767 [2022-11-25 17:09:25,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 103 transitions, 597 flow. Second operand has 12 states, 12 states have (on average 298.0) internal successors, (3576), 12 states have internal predecessors, (3576), 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 17:09:25,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:09:25,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 767 [2022-11-25 17:09:25,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:09:30,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 17:09:32,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 17:09:34,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 17:09:36,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 17:09:39,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 17:09:41,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 17:09:43,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 17:09:45,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 17:09:59,844 INFO L130 PetriNetUnfolder]: 69290/85415 cut-off events. [2022-11-25 17:09:59,844 INFO L131 PetriNetUnfolder]: For 187/187 co-relation queries the response was YES. [2022-11-25 17:10:00,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171190 conditions, 85415 events. 69290/85415 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 5514. Compared 457123 event pairs, 32298 based on Foata normal form. 10/23180 useless extension candidates. Maximal degree in co-relation 171171. Up to 12132 conditions per place. [2022-11-25 17:10:00,357 INFO L137 encePairwiseOnDemand]: 751/767 looper letters, 364 selfloop transitions, 50 changer transitions 0/419 dead transitions. [2022-11-25 17:10:00,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 419 transitions, 2405 flow [2022-11-25 17:10:00,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 17:10:00,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 17:10:00,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3984 transitions. [2022-11-25 17:10:00,369 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43285528031290743 [2022-11-25 17:10:00,369 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3984 transitions. [2022-11-25 17:10:00,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3984 transitions. [2022-11-25 17:10:00,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:10:00,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3984 transitions. [2022-11-25 17:10:00,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 332.0) internal successors, (3984), 12 states have internal predecessors, (3984), 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 17:10:00,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 767.0) internal successors, (9971), 13 states have internal predecessors, (9971), 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 17:10:00,398 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 767.0) internal successors, (9971), 13 states have internal predecessors, (9971), 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 17:10:00,399 INFO L175 Difference]: Start difference. First operand has 87 places, 103 transitions, 597 flow. Second operand 12 states and 3984 transitions. [2022-11-25 17:10:00,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 419 transitions, 2405 flow [2022-11-25 17:10:00,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 419 transitions, 2252 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-11-25 17:10:00,409 INFO L231 Difference]: Finished difference. Result has 99 places, 128 transitions, 854 flow [2022-11-25 17:10:00,409 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=854, PETRI_PLACES=99, PETRI_TRANSITIONS=128} [2022-11-25 17:10:00,410 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 18 predicate places. [2022-11-25 17:10:00,410 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 128 transitions, 854 flow [2022-11-25 17:10:00,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 298.0) internal successors, (3576), 12 states have internal predecessors, (3576), 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 17:10:00,412 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:10:00,412 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:10:00,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-25 17:10:00,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/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 17:10:00,624 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2022-11-25 17:10:00,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:10:00,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1065699400, now seen corresponding path program 1 times [2022-11-25 17:10:00,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:10:00,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1130500326] [2022-11-25 17:10:00,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:10:00,625 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 17:10:00,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:10:00,627 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/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 17:10:00,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b653dab-4f41-46c8-ac52-953c6c5b2e99/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-25 17:10:00,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:10:00,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-25 17:10:00,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:10:00,933 INFO L321 Elim1Store]: treesize reduction 103, result has 24.8 percent of original size [2022-11-25 17:10:00,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 59 [2022-11-25 17:10:01,564 INFO L321 Elim1Store]: treesize reduction 48, result has 68.6 percent of original size [2022-11-25 17:10:01,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 163 [2022-11-25 17:10:12,558 INFO L321 Elim1Store]: treesize reduction 60, result has 72.2 percent of original size [2022-11-25 17:10:12,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 106 treesize of output 252